WO2023191429A1

WO2023191429A1 - Interchangeable camera lens control device and camera comprising same

Info

Publication number: WO2023191429A1
Application number: PCT/KR2023/004060
Authority: WO
Inventors: 한승헌; 김영복; 이의삼; 박준; 김기수; 박종복
Original assignee: 한국광기술원
Priority date: 2022-03-28
Filing date: 2023-03-28
Publication date: 2023-10-05
Also published as: KR102694094B1; KR20230139444A

Abstract

An interchangeable camera lens control device and a camera comprising same are disclosed. According to one aspect of the present embodiment, provided is the interchangeable camera lens control device mounted inside a camera that cannot directly control a mounted interchangeable lens, so as to control the operation of the interchangeable lens, the interchangeable camera lens control device comprising: an illuminance sensor for sensing the illuminance of incident light entering the camera; a distance sensor for sensing the distance to a target located within a capturing range of a camera; and a control unit for generating, on the basis of sensing values of the illuminance sensor and the distance sensor, control signals for the focal distance of a lens inside the interchangeable lens and the aperture value of the aperture in the interchangeable lens.

Description

Camera interchangeable lens control device and camera including same

The present invention relates to a control device for an interchangeable lens that can be attached and detached to a camera and a camera including the same.

The content described in this section simply provides background information for this embodiment and does not constitute prior art.

Video recording devices such as cameras or camcorders must accurately focus on the subject and appropriately adjust the amount of incident light in order to capture clear still images or moving images.

The existing interchangeable lens camera consists of a camera body and interchangeable lenses, and the camera body drives the focus adjustment lens within the interchangeable lens, allowing the camera to automatically adjust the focus and incident light amount.

However, for cameras such as recent machine vision cameras, which have an interchangeable lens mounted on the main body, but do not have the function to adjust the focus of the interchangeable lens and the amount of incident light within the main body, there has been the inconvenience of having the user manually adjust the focus or amount of incident light. .

One embodiment of the present invention provides a camera interchangeable lens control device that automatically controls the focus and incident light amount of the interchangeable lens between the camera body and the interchangeable lens or controls it from the outside, and a camera including the same. Work has a purpose.

According to one aspect of the present invention, in a camera interchangeable lens control device that is mounted in a camera that cannot directly control the mounted interchangeable lens and controls the operation of the interchangeable lens, the device includes an illuminance sensor that senses the illuminance of incident light entering the camera. And a distance sensor that senses the distance to a target located within the shooting range of the camera, the illuminance sensor, and the sensing value of the distance sensor, the focal length of the lens in the interchangeable lens and the aperture value of the aperture in the interchangeable lens. A camera interchangeable lens control device is provided, comprising a control unit that generates a control signal.

According to one aspect of the present invention, the control unit transmits the generated control signal to the exchangeable lens.

According to one aspect of the present invention, the camera interchangeable lens control device further includes a communication unit that receives control signals of the focal length of the lens in the interchangeable lens and the aperture value of the aperture in the interchangeable lens from the outside.

According to one aspect of the present invention, in a camera interchangeable lens control device mounted in a camera that cannot directly control the mounted interchangeable lens and controlling the operation of the interchangeable lens, the optical path of the incident light reflected from the target and incident into the camera A beam splitter is placed at a preset angle on the image and reflects part of the light in the visible light wavelength band, and an illuminance sensor senses the illuminance of the incident light by receiving part of the incident light reflected from the beam splitter. A distance sensor that irradiates inspection light in a wavelength band and reflects it to the target, receives the inspection light reflected from the target and enters through the beam splitter, and senses the distance to the target, and the illuminance sensor and the distance sensor A camera interchangeable lens control device is provided, comprising a control unit that generates a control signal for the focal length of the lens in the interchangeable lens and the aperture value of the aperture in the interchangeable lens, based on the sensing value.

According to one aspect of the present invention, the illuminance sensor and the distance sensor are disposed in a direction perpendicular to the optical path of the incident light that is reflected from the target and enters the camera.

According to one aspect of the present invention, the beam splitter is disposed so that one reflection surface faces the target and each sensor on the optical path of the incident light that is reflected from the target and enters the camera.

According to one aspect of the present invention, the preset angle is adjusted according to the focal length of the camera.

According to one aspect of the present invention, the beam splitter reflects a preset ratio of incident light in the visible light wavelength band and transmits the rest, but reflects all light in wavelength bands other than the visible light wavelength band.

According to one aspect of the present invention, in a camera interchangeable lens control device mounted in a camera that cannot directly control the mounted interchangeable lens and controlling the operation of the interchangeable lens, the optical path of the incident light reflected from the target and incident into the camera A beam splitter is placed at a preset angle on the image and reflects part of the light in the visible wavelength band, and an illuminance sensor senses the illuminance of the incident light by receiving part of the incident light reflected from the beam splitter, and directly irradiates the inspection light to the target. , a distance sensor that receives inspection light reflected from the target and senses the distance to the target, and based on the sensing values of the illuminance sensor and the distance sensor, the focal length of the lens in the interchangeable lens and the aperture in the interchangeable lens A camera interchangeable lens control device is provided, comprising a control unit that generates a control signal for an aperture value.

According to one aspect of the present invention, there is a camera body that senses the image of an external target by receiving concentrated or dispersed light, and a camera body that is detached from the body and focuses or disperses the reflected light reflected from the target to transmit the image into the camera body. A camera is provided, comprising an interchangeable lens unit and a camera interchangeable lens control device.

As described above, according to one aspect of the present invention, between the camera body and the interchangeable lens, the focus and incident light amount are automatically controlled or can be controlled from the outside to adjust the focus and incident light amount. It has the advantage of improving the convenience of operation of cameras that do not have this function.

Figure 1 is a diagram showing the configuration of a camera including an automatic control function of interchangeable lenses according to an embodiment of the present invention.

Figure 2 is a diagram showing the configuration of an interchangeable lens unit and a camera interchangeable lens control device according to an embodiment of the present invention.

Figure 3 is a diagram showing the structure of a camera interchangeable lens control device according to the first embodiment of the present invention.

Figure 4 is a diagram showing the structure of a camera interchangeable lens control device according to a second embodiment of the present invention.

Figure 5 is a diagram showing the structure of a camera interchangeable lens control device according to a third embodiment of the present invention.

Figure 6 is a flowchart showing how the camera interchangeable lens control device controls the focus and incident light amount of the interchangeable lens according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "include" or "have" should be understood as not precluding the existence or addition possibility of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Additionally, each configuration, process, process, or method included in each embodiment of the present invention may be shared within the scope of not being technically contradictory to each other.

Referring to Figure 1, the camera 100 according to an embodiment of the present invention includes an interchangeable lens unit 110, a camera body 120, and a camera interchangeable lens control device 130 (hereinafter abbreviated as 'control device'). Includes.

The interchangeable lens unit 110 condenses or disperses reflected light reflected from an external target and forms an image into the camera body 120. The interchangeable lens unit 110 can be detached from the camera body 120, and an appropriate lens unit among the interchangeable lens units 110 having various focal lengths is mounted on the camera body 120 to capture the image of the target. formed in

The camera body 120 receives light collected or dispersed by the exchangeable lens unit 110 and senses the image of the target. The camera body 120 includes an image sensor and senses the target by sensing the image that is focused or dispersed by the interchangeable lens unit 110. However, as mentioned in the technology background of the invention, the camera body 120 has the characteristic of not being able to control the operation of the interchangeable lens unit 110.

The control device 130 controls the focal length of the interchangeable lens unit 110 and the amount of incident light incident on the camera body 120. The control device 130 is disposed between the interchangeable lens unit 110 and the camera body 120 on the optical path formed by the interchangeable lens unit 110 and the camera body 120, and controls the focal length to be formed by the interchangeable lens unit 110 and the interchangeable lens. The unit 110 controls the amount of incident light adjusted. The control device 130 can control the interchangeable lens unit 110 by sensing the focal length and incident light amount (illuminance), and receives a control signal of the interchangeable lens unit 110 from the outside to control the interchangeable lens unit 110. can also be controlled. In this way, the control device 130 controls the interchangeable lens unit 110 between the two 110 and 120 by itself or by receiving input from the outside, thereby taking over the operations that the camera body 120 cannot perform.

Referring to Figure 2, the interchangeable lens unit 110 according to an embodiment of the present invention includes a lens 210, a control unit 220, a motor 230, and an aperture 240, and the control device 130 It includes a communication unit 250, a control unit 260, an illuminance sensor 270, and a distance sensor 275.

The lens 210 receives reflected light reflected from the target and condenses or disperses the reflected light so that an image is formed on the camera body 120, especially the image sensor. The lens 210 can adjust the focal length by receiving power from the motor 230, and thus the degree of concentration or dispersion of reflected light can be adjusted.

The control unit 220 controls the operation of the motor 230. The control unit 220 receives control signals from the control unit 260 and controls the motor 230. The control unit 220 controls the motor 230 to control the focal length of the lens 210 or the amount of light transmitted by the aperture 240 (incident into the camera).

The motor 230 adjusts the focal length 210 of the lens 210 or the amount of transmitted light of the aperture 240 under the control of the control unit 220.

The aperture 240 adjusts the amount of light incident into the camera. The aperture 240 is disposed in front of the lens 210 in a direction toward the outside of the camera and adjusts the amount of light to be incident on the lens 210. The aperture 240 adjusts the effective diameter of the lens 210, thereby adjusting the amount of light that will pass through it and enter the lens 210.

The communication unit 250 may receive a control signal for controlling the interchangeable lens unit 110 from the outside or transmit the control status of the interchangeable lens unit 110 to the outside. The communication unit 250 communicates with the outside, mainly the camera user's terminal, using wired communication or wireless communication. The communication unit 250 may receive a control signal for the operation of the interchangeable lens unit 110, more specifically, the focal length of the lens 210 or the aperture value (transmitted light amount) of the aperture 240 from the corresponding terminal. Alternatively, the communication unit 250 may transmit the control status of the control unit 260 controlling the control unit 220 of the interchangeable lens unit 110 to the corresponding terminal based on the sensing values of each

sensor

270 and 275.

The control unit 260 receives the sensing value from the

sensors

270 and 275, and transmits a control signal to the control unit 220 to control the focal length of the lens 210 or the aperture value of the aperture 240 based on the sensing value. do.

The control unit 260 receives sensing values from the

sensors

270 and 275, determines whether a target exists within the shooting range of the camera 100, and determines how far the target is from the camera 100, more specifically, the lens 210. Determine whether the distance is far enough and how much light is incident from the outside. Based on the judgment result, the control unit 260 determines how much focal length the lens 210 must have so that the image of the target can be focused on the image sensor within the camera body 120 and how much illumination the incident light entering the camera must have. It analyzes whether the target can be fully recognized by the image sensor. Based on the analysis results, the control unit 260 generates a control signal (to the motor 230) for the focal length of the lens 210 and a control signal (to the motor 230) for the amount of transmitted light of the aperture 240. . Accordingly, the control unit 260 controls such that a complete image of the target is formed on the image sensor, light with appropriate illuminance is incident, and the target is fully recognized by the image sensor.

The control unit 260 transmits the generated control signal to the control unit 220 so that the control unit 220 can control the lens 210 or the aperture 240 based on the sensed information. The control unit 260 performs wired or wireless communication with the control unit 220 and transmits the generated control signal to the control unit 220.

The control unit 260 can receive a sensing value from each

sensor

270 and 275 at a preset period (interval) (or control each sensor to sense a sensing value), and determines when the sensing value is received and The control signal can be updated by comparing it with its previous point in time. The control unit 260 may receive sensing values from each

sensor

270 and 275 at a specific point in time and generate a control signal for the lens 210 or the aperture 240 accordingly. The control unit 260 periodically receives sensing values from each

sensor

270 and 275, and can compare the received sensing value at the current time with the sensing value at the time immediately before the corresponding time. If both sensing values are the same, the illuminance of incident light on the target or camera 100 corresponds to a state where there is no change. On the other hand, if either of the two sensing values changes, the focal length of the lens 210 or the aperture value of the aperture 240 must be controlled differently because the illuminance of the incident light to the target or camera 100 has changed. When some or all of the sensing values at the above-mentioned two points of time change, the control unit 260 updates the control signal of the lens 210 or the aperture 240 based on the sensing values at the current time.

The illuminance sensor 270 senses the illuminance of incident light from the outside. When light with excessive illuminance is incident into the camera, it becomes difficult for the image sensor in the camera body 120 to fully sense the target. Accordingly, so that the control unit 260 can generate a control signal for the aperture 240, the illuminance sensor 270 senses the illuminance of incident light from the outside.

The distance sensor 275 senses the distance from its own location to the target. The control unit 260 must be able to know how far away the target that exists outside the camera 100 is from the camera 100 so that the lens 210 can adjust the focal length to completely capture the image of the target. For this purpose, the distance sensor 275 senses the distance from its own location to the target. The control unit 260 measures the distance from the lens 210 to the distance sensor 275 and the distance from the lens 210 to the camera body 120. Since the distance to my image sensor is already known, the focal length of the lens 210 can be calculated from the sensing value of the distance sensor 275.

The illuminance sensor 270 and the distance sensor 275 each include an optical structure 310, which will be described later with reference to FIGS. 3 to 5, in order to sense the above-described sensing values. By including the optical structure 310, each

sensor

270 and 275 can sense each of the above-described information.

Figure 3 is a diagram showing the structure of a camera interchangeable lens control device according to the first embodiment of the present invention. Figure 3 shows the structure of the control device 130 when the focal length of the camera 100 is relatively long and there is room.

The control device 130 is an optical configuration and includes a beam splitter 310 that allows the illuminance sensor 270 and the distance sensor 275 to sense the illuminance of the incident light and the distance to the target 320, respectively.

The illuminance sensor 270 and the distance sensor 275 are arranged in a direction perpendicular to the optical path through which reflected light from the target 320 is incident on the image sensor 330. The illuminance sensor 270 receives light reflected from the beam splitter 310 and senses the illuminance of the incident light incident on the camera 100. The distance sensor 275 irradiates light other than the visible light wavelength band in the direction of the beam splitter 310 and receives reflected light reflected from the target to sense how far the target 320 is from itself.

The beam splitter 310 is arranged so that one reflective surface faces the target 320 and each

sensor

270 and 275 on the above-described optical path. The beam splitter 310 is disposed at a preset first angle on the above-described optical path. Here, the preset first angle may be an angle of approximately 45° based on a direction perpendicular to the optical path. Since the illuminance sensor 270 and the distance sensor 275 are arranged in a vertical direction on the above-described optical path, the beam splitter 310 reflects the incident light on the optical path to the illuminance sensor 270 or the distance sensor ( It is arranged to have a preset first angle in order to reflect the light emitted from 275) to the target and to reflect the reflected light from the target back to the distance sensor 275.

The beam splitter 310 transmits light in the visible wavelength band at a preset ratio, but reflects light in the remaining wavelength band (for example, light in the near-infrared wavelength band).

For example, the beam splitter 310 may transmit light in the visible light wavelength band at a preset ratio, for example, 99%, and reflect the remaining ratio of light. Accordingly, a certain percentage of the incident light (meaning object light as reflected light of the target) incident from outside the camera 100 is incident on the illuminance sensor 270. In order for the image of the target 320 to be formed on the image sensor 330 as intact as possible, the beam splitter 310 reflects only the remaining ratio of light in the visible light wavelength band excluding the preset ratio. In any case, the illuminance sensor 270 is intended to sense the illuminance of incident light, and since it can know the ratio of light reflected to itself among the incident light, it can know the illuminance value of the entire incident light from the sensing value it senses.

On the other hand, the beam splitter 310 completely reflects light in the remaining wavelength band. The light in the remaining wavelength band is not a factor that affects the formation of the image of the target 320 on the image sensor 330, and corresponds to light for the purpose of the distance sensor 275 measuring the distance to the target 320. . Accordingly, the beam splitter 310 reflects the light emitted from the distance sensor 275 to measure the distance toward the target 320. Thereafter, the beam splitter 310 reflects the reflected light (in the remaining wavelength band) incident from the target 320 to the distance sensor 275 to measure the distance. Accordingly, the distance sensor 275 senses the distance between itself and the target 320 using information on the time it takes for the reflected light (from the target 320) to arrive after irradiating the light for measurement.

Each

sensor

270 and 275 transmits the sensed value to the control unit 260 to generate a control signal.

The control device 130 shown in FIG. 4 may have the same structure as the control device 130 shown in FIG. 3. However, the distance sensor 275 in the control device 130 according to the second embodiment of the present invention is different from the distance sensor 275 in the control device 130 according to the first embodiment of the present invention to the target 320. When irradiating light for distance measurement, it can be irradiated directly to the target 320 without going through the beam splitter 310. The distance sensor 275 can measure the distance between itself and the target 320 by directly irradiating distance measurement light to the target 320 and directly receiving reflected light from the target 320.

Unlike FIG. 3, FIG. 5 shows the structure of the control device 130 when the focal length of the camera 100 is relatively short.

The control device 130 shown in FIG. 5 may also have the same structure except for the control device 130 and the beam splitter 310 shown in FIG. 3. However, because the focal length of the camera shown in FIG. 5 is relatively short, the beam splitter 310 is arranged at an angle different from that of FIG. 3. The beam splitter 310 is arranged to have a preset second angle based on a direction perpendicular to the optical path, where the preset second angle is smaller than the preset first angle. Accordingly, the control device 130 can have a relatively narrow width (length in the optical path direction) and can also be placed on the camera 100 with a relatively short focal length.

In Figure 5, the distance sensor 275 is shown as measuring the distance to the target in the manner shown in Figure 3, but it is not limited thereto, and even if the distance to the target is measured directly in the manner shown in Figure 4, It's okay.

The control unit 260 sets the focal length or aperture value to a preset initial value (S610). In initial operation, the control unit 260 sets the focal length of the lens 210 and the aperture value of the aperture 240 to preset initial values (which may be arbitrary values).

The control unit 260 receives the sensing values of each

sensor

270 and 275 from each sensor 270 and 275 (S620).

The control unit 260 determines whether the sensing value at the current time and the sensing value immediately before the current time are the same (S630). In order to determine a change in the position of the target 320 or a change in the illuminance of incident light, the control unit 260 determines whether the sensing value at the current time is the same as the sensing value at the immediately preceding time based on the current time.

If the sensing values at both viewpoints are the same, there is no need to separately change the focal length of the lens or the aperture aperture value.

On the other hand, when the sensing values at both viewpoints are different, the control unit 260 generates a control signal for the focal length of the lens or the aperture value of the aperture from the sensing value at the current viewpoint (S640). If the sensing values at both viewpoints are different, it means that a change has occurred in the position of the target 320 or the illuminance of the incident light. Accordingly, based on the sensing values of each

sensor

270 and 275, the control unit 260 determines the A control signal is generated for the focal length that the lens 210 should have depending on the position of the target 320 or the aperture value of the aperture 240 that should be adjusted according to the illuminance of the incident light. The control unit 260 transmits the generated control signal to the control unit 220, so that the control unit 220 can control the lens 210 or the aperture 240 through the motor 230 according to the control signal.

In Figure 6, each process is described as being sequentially executed, but this is merely an illustrative explanation of the technical idea of an embodiment of the present invention. In other words, a person skilled in the art to which an embodiment of the present invention pertains can change the sequence shown in FIG. 6 or perform one or more of the processes without departing from the essential characteristics of an embodiment of the present invention. Since various modifications and variations can be applied by executing in parallel, FIG. 6 is not limited to a time series order.

Meanwhile, the processes shown in FIG. 6 can be implemented as computer-readable codes on a computer-readable recording medium. Computer-readable recording media include all types of recording devices that store data that can be read by a computer system. That is, computer-readable recording media include storage media such as magnetic storage media (eg, ROM, floppy disk, hard disk, etc.) and optical read media (eg, CD-ROM, DVD, etc.). Additionally, computer-readable recording media can be distributed across networked computer systems so that computer-readable code can be stored and executed in a distributed manner.

The above description is merely an illustrative explanation of the technical idea of the present embodiment, and those skilled in the art will be able to make various modifications and variations without departing from the essential characteristics of the present embodiment. Accordingly, the present embodiments are not intended to limit the technical idea of the present embodiment, but rather to explain it, and the scope of the technical idea of the present embodiment is not limited by these examples. The scope of protection of this embodiment should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims priority in accordance with Article 119(a) of the U.S. Patent Act (35 U.S.C. § 119(a)) for Patent Application No. 10-2022-0037759 filed in Korea on March 28, 2022. All contents are hereby incorporated by reference into this patent application. In addition, if this patent application claims priority for a country other than the United States for the same reasons as above, the entire contents thereof will be incorporated into this patent application by reference.

Claims

In a camera interchangeable lens control device that is mounted on a camera that does not directly control the mounted interchangeable lens and controls the operation of the interchangeable lens,

an illuminance sensor that senses the illuminance of incident light entering the camera;

A distance sensor that senses the distance to a target located within the shooting range of the camera; and

A control unit that generates a control signal for the focal length of the lens in the interchangeable lens and the aperture value of the aperture in the interchangeable lens, based on the sensing values of the illuminance sensor and the distance sensor.

A camera interchangeable lens control device comprising:
According to paragraph 1,

The control unit,

A camera interchangeable lens control device characterized in that the generated control signal is transmitted to the interchangeable lens.
According to paragraph 1,

A camera interchangeable lens control device further comprising a communication unit that receives control signals of the focal length of the lens in the interchangeable lens and the aperture value of the aperture in the interchangeable lens from the outside.
In a camera interchangeable lens control device that is mounted on a camera that does not directly control the mounted interchangeable lens and controls the operation of the interchangeable lens,

a beam splitter disposed at a preset angle on the optical path of the incident light reflected from the target and incident into the camera to reflect a portion of the light in the visible light wavelength band;

an illuminance sensor that senses the illuminance of the incident light by receiving a portion of the incident light reflected from the beam splitter;

A distance sensor that irradiates inspection light in a wavelength band other than the visible light wavelength band with the beam splitter and reflects it to the target, and senses the distance to the target by receiving inspection light reflected from the target and incident through the beam splitter. ; and

A control unit that generates a control signal for the focal length of the lens in the interchangeable lens and the aperture value of the aperture in the interchangeable lens, based on the sensing values of the illuminance sensor and the distance sensor.

A camera interchangeable lens control device comprising:
According to paragraph 4,

The illuminance sensor and the distance sensor,

A camera interchangeable lens control device, characterized in that it is arranged in a direction perpendicular to the optical path of the incident light that is reflected from the target and enters the camera.
According to clause 4,

The beam splitter is,

A camera interchangeable lens control device, characterized in that one reflection surface is disposed on the optical path of the incident light reflected from the target and incident into the camera so that it faces the target and each sensor.
According to paragraph 4,

The preset angle is,

A camera interchangeable lens control device, characterized in that it is adjusted according to the focal length of the camera.
According to paragraph 4,

The beam splitter is,

A camera interchangeable lens control device characterized in that it reflects a preset ratio of incident light in the visible light wavelength band and transmits the rest, but reflects all light in wavelength bands other than the visible light wavelength band.
In a camera interchangeable lens control device that is mounted on a camera that does not directly control the mounted interchangeable lens and controls the operation of the interchangeable lens,

a beam splitter disposed at a preset angle on the optical path of the incident light reflected from the target and incident into the camera to reflect a portion of the light in the visible light wavelength band;

an illuminance sensor that senses the illuminance of the incident light by receiving a portion of the incident light reflected from the beam splitter;

A distance sensor that directly radiates inspection light to the target and receives inspection light reflected from the target to sense the distance to the target; and

A control unit that generates a control signal for the focal length of the lens in the interchangeable lens and the aperture value of the aperture in the interchangeable lens, based on the sensing values of the illuminance sensor and the distance sensor.

A camera interchangeable lens control device comprising:
According to clause 9,

The illuminance sensor and the distance sensor,

A camera interchangeable lens control device, characterized in that it is arranged in a direction perpendicular to the optical path of the incident light that is reflected from the target and enters the camera.
According to clause 9,

The beam splitter is,

A camera interchangeable lens control device, characterized in that one reflection surface is disposed on the optical path of the incident light reflected from the target and incident into the camera so that it faces the target and each sensor.
According to clause 9,

The preset angle is,

A camera interchangeable lens control device, characterized in that it is adjusted according to the focal length of the camera.
According to clause 9,

The control unit,

A camera interchangeable lens control device characterized in that the generated control signal is transmitted to the interchangeable lens.