JPH04107411A - Enlarging observation device - Google Patents

Abstract

PURPOSE:To reduce the size and make the handling easy by incorporating an optical system for enlarging and lighting light source for observing body in a front block, incorporating a signal processing means in a rear block, and making the optical axis of the object tip part of an object tool bending to the optical axis of the optical system. CONSTITUTION:The front block 3 is equipped with the object tip part 5 atop and has the optical system 6 for enlarging and lighting light source 7 for observing body internally. The object tip part 5 has a through hole 8 atop so as to receive image light from an observed body M while irradiating the observing body M with irradiation light from the light source 7 and is inserted threadably laterally to the length direction of the object tool 1. An image pickup means (CCD element) 13 which picks up an enlarged image of the observed body M obtained by the optical system 6 and a signal processing means 14 which processes the signal from the image pickup means 13 and outputs the result to a display means are incorporated in the rear block. Consequently, the size is reduced and the handling is made easy.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has applications in the medical, academic, and industrial application fields.
For example, it is used to magnify and observe the outer surface or surface layer of objects to be observed, such as human skin, microscopic living things, or integrated circuits. The present invention relates to a magnifying observation device capable of enlarging and observing an object to be observed in its original position without any processing by simply moving the object.

[Conventional technology]

Traditionally, microscopes and louvers have been used as instruments or devices for magnified observation, but microscopes require processing the object to be observed and bringing it to the microscope, while a looper itself moves the object to be observed. Although it can be carried to the side and easily observed without performing any processing on the object to be observed, it is not equipped with a light source for illuminating the object to be observed, and the possible magnification is also low.

Against this background, the applicant first developed a magnifying observation device that combines the advantages of a microscope (high magnification) and the advantage of a room (simplicity) (Japanese Patent Application Laid-Open No. 1-30852).
No. 7, Japanese Patent Application No. 1-2'6462 and Japanese Patent Application No. 1-273
No. 419).

This magnifying observation device consists of an observation device main body consisting of a display (display means) and a controller (not shown), and an objective tool 100 (a lens barrel and a light guide cap as described in JP-A-1-308527) shown in FIG. The objective tool 100 has a built-in optical system 102 for enlarging an image, and also has an optical fiber 103 that guides irradiation light for illuminating the object M to be observed from a light source provided on the main body of the observation device. is equipped with a light guide cap (objective tip) 105. Then, while holding this objective 100 in your hand, bring the light guide cap 105 into contact with or close to the object M to be observed, and
Image sensor 104 (CCD element) built into 00
The image captured by the camera is reproduced on a display for observation.
If the tip of the light guide cap 105 is brought into contact with the object M to be observed or brought close to it at a predetermined distance, it will automatically come into focus, and anyone can easily use the It is possible to perform observations at magnifications ranging from 1 to 1,000 times.

By the way, in this magnifying observation device, a light source is installed in the controller to obtain more powerful irradiation light, and the irradiation light is guided from this light source to the objective using an optical fiber. A signal processing means for this purpose is also provided within the controller. Therefore,
In addition to the objective and the display, a controller is required, which increases the overall size and is not sufficient in cases where ease of use is more important.

[Problem to be solved by the invention]

Therefore, it is an object of the present invention to further reduce the size and ease of handling of a magnifying observation device having the above-mentioned basic structure.

[Means to solve the problem]

The objective is to take an image of the object by bringing the tip of the objective into contact with or close to the surface of the object, and reproduce this image on the display. This is a magnifying observation device that performs magnified observation of an object to be observed, in which the objective tool is divided into a front block and a rear block that can be brought into and out of contact, and the front block is equipped with an optical system for enlarging the object and illumination of the object to be observed. The rear block includes an imaging means for capturing an enlarged image from the optical system and a signal processing means for processing the signal from the imaging means and outputting it to the display means. This is achieved by a magnifying observation device whose optical axis is oriented to intersect with the optical axis of the optical system.

[For production]

In this magnifying observation device, the light source and signal processing means are also built into the objective, so the controller required in the above-mentioned conventional device is not required, and the entire device is made smaller accordingly. Moreover, the built-in of this light source and signal processing means in the objective means that the light source is closer to the object to be observed, which means that the output of the light source can be smaller, and the light source itself can be significantly improved. This leads to miniaturization, and when looking at the signal processing means, since the signal processing means is closer to the imaging means, the capacity of the signal processing means can be much smaller than in the conventional case. This leads to the fact that it can be made much smaller. In other words, incorporating the light source and signal processing means into the objective tool leads to miniaturization of the light source and signal processing means.
This organic relationship, in which miniaturization also enables internalization, is what brings about the overall miniaturization.

Furthermore, in conjunction with the integration of such a light source and signal processing means into the objective, this magnifying observation device incorporates the objective into a front block containing an optical system and a light source, and a built-in imaging means and signal processing means. It is divided into a rear block and can be brought into contact with and separated from the two blocks, so you can easily prepare the front block with special specifications according to the magnification ratio and type of object to be observed, and simply exchange it for the required observation. This makes handling even easier.

Furthermore, by oriented the objective tip of the objective so that its optical axis intersects with the optical axis of the optical system, the objective can be oriented horizontally, that is, with the length direction of the objective facing the observation surface of the object. Observations can now be made in parallel, making it easier to observe, for example, the skin of one's own face or from a narrow gap.

〔Example〕

The present invention will be explained in detail below.

This magnifying observation device includes an objective tool 1 as shown in FIG.
It consists of display means (not shown) such as a CRT for reproducing and displaying the enlarged image of the object M obtained by the objective 1.

The objective tool 1 has an elongated cylindrical shape as a whole and is divided into a front block 3 and a rear block 4, and the front block 3 can be attached to and detached from the rear block 4.

The front block 3 is provided with an objective tip 5 at its tip, and has an optical system 6 for enlarging an object to be observed and a light source 7 for illuminating the object to be observed.

The objective tip 5 has a through hole 8 formed at its tip for irradiating the object M with the irradiation light from the light source 7 and taking in the image light from the object M. It is screwed horizontally with respect to the length direction of 1. In other words,
The optical axis 5A is oriented to intersect with the optical axis 6A of the optical system.

Accordingly, a reflection mirror 9 is provided at the intersection of the optical axis 5A of the objective tip 5 and the optical axis 6A of the optical system to change the direction of the image light by 90°.

The objective tip 5 is oriented sideways in this way so that the objective 1 can be observed sideways with respect to the observation surface of the object M. For example, when observing the skin of one's own face, This is to make observation easier when observing from a narrow gap or when observing from a narrow gap.

The optical system 6 is formed by holding an objective lens 11 and other lenses in a cylindrical holder 10, and a light-shielding bottom 12 formed in a tapered shape is provided at the tip of the holder 10. Basically, this optical system 6 is configured such that the objective lens 1
Although the focal point of the object M is positioned so as to match the surface of the object to be observed M, non-contact observation is also possible by adjusting the screwing state of the objective tip 5 to the front block 3. The light source 7 is arranged at a position corresponding to the outside of the light-shielding bottom 12 of the holder 10, and care is taken so that the light is not blocked by the light-shielding bottom 12 and directly enters the optical system 6. As the light source 7, as shown in FIG. 2, a large number of small light emitting sources 7b may be arranged in a ring, or a ring-shaped lamp may be used.

Since such a front block 3 is removable from the rear block 4, a plurality of optical systems 6, light sources 7, etc. with special specifications are prepared in advance according to the magnification ratio and the type of object to be observed. It is possible to selectively use the specialized specifications by keeping the device in place, which allows for even easier handling.

The rear block 4 is an object to be observed M obtained by the optical system 6.
It incorporates an imaging means (CCD element) 13 for capturing an enlarged image of the image, and a signal processing means 14 for processing a signal from the imaging means 13 and outputting the processed signal to a display means. Also, this rear block 4
is a fitting tube 15 for connecting the front block 3 to the tip surface.
is provided protrudingly, and a cable 16 connected to the display means is led out from the rear end.
A switch 17 for F is provided on the side, and this switch]
A terminal 18 of the conducting wire from the light source 7 faces the front end surface, and is connected to a terminal 19 of the conducting wire from the light source 7 facing the rear end surface of the front block 3.

To observe an object M using such a magnifying observation device, bring the objective 1 to the side of the object M, and if the object can be observed by contact, the tip of the object It is only necessary to bring the tip of 5 into contact with the surface of the object M to be observed. If non-contact observation is required, the front block 3 of the objective tip 5
Adjust the screwing state of the objective end 5 to the object to be observed M.
Observe at a distance.

〔Effect of the invention〕

Since the magnifying observation device according to the present invention is as described above, it has the following effects.

(a) Since the light source and signal processing means are also built into the objective tool, the overall size is reduced and handling becomes easier.

(b) By dividing the objective into a front block and a rear block and allowing them to come into contact with each other and separate them, it is possible to simply replace the front block, which is specially designed in advance according to the magnification rate and the type of object to be observed. The necessary observations can be easily performed, making observation even easier.

(C) By turning the tip of the objective sideways, it is possible to observe with the objective tool sideways, making it even easier to handle.

[Brief explanation of drawings]

FIG. 1 is a schematic side view including a partial cross section of the objective of the magnifying observation device according to the present invention, FIG. 2 is a schematic plan view showing the relationship between the tip of the objective and the light source, and FIG. 3 is a conventional magnifying FIG. 3 is a schematic side view of the objective of the observation device. 1--1 objective tool 3--1 front block 4,...--rear block 5--1 objective tip 6--1 optical system 7--1 Light source 13---1--Imaging means signal processing means

Claims (1)

[Claims] Consisting of an objective tool and a display means, the objective tip of the objective tool is brought into contact with or close to the surface of the object to be observed to take an image of the object to be observed, and this image is reproduced on the display means to magnify the object. This is a magnifying observation device for performing observation, in which the objective tool is divided into a front block and a rear block that can be brought into and out of contact, and the front block has a built-in optical system for enlarging the object to be observed and a light source for illuminating the object to be observed. The rear block is equipped with an imaging means for capturing an enlarged image from the optical system and a signal processing means for processing the signal from the imaging means and outputting it to the display means. A magnifying observation device characterized by being oriented in a direction crossing the optical axis.