JP4834043B2 - Hidden mark visual recognition device for spectacle lenses - Google Patents

Description

  The present invention relates to an apparatus for clearly viewing a hidden mark provided on a spectacle lens.

  This type of device is known, for example, from US Pat. There, a light quantity limiter is positioned in the optical path between the light source (fluorescent lamp) and the magnifying lens to adjust the illumination state of the illumination light so that the hidden mark provided on the spectacle lens can be viewed with the magnifying lens. ing. The light amount limiter is formed in an L shape with a first face plate and a second face plate, a filter that exhibits an antiglare effect is provided on the first face plate portion, and a spectacle lens is provided on the second face plate portion. A mask is provided to limit the illumination area to the lens periphery. A projection-like hidden mark provided on a plastic spectacle lens or a concave hidden mark provided on a glass spectacle lens is illuminated by illumination light applied to the spectacle lens via the first and second face plate portions. It can be visually recognized. The spectacle lens is supported in the vicinity of the focal position of the magnifying lens while being held by hand. A similar hidden mark visual recognition device is also disclosed in Patent Document 2, in which the hidden mark is confirmed in a state where the spectacle lens is placed on the placement surface of the upper surface of the main body case.

  Unlike the above-described hidden mark visual recognition device, a hidden mark visual recognition device has been proposed in which illumination light from a light source is reflected by a background body and then irradiated toward a magnifying lens (Patent Document 3). The light source is arranged obliquely above the background body and is provided on the eyeglass lens by irradiating the spectacle lens only with direct light from the light source, or by irradiating the spectacle lens with direct light and reflected light from the background body. The hidden mark can be visually recognized. The background body is composed of a plastic plate coated with a black matte paint, or a reflector such as an aluminum foil is arranged in a dotted or linear shape on the black reflective surface of the background body.

Japanese Patent No. 3009401 (paragraph numbers 0023 to 0024, FIG. 2) Japanese Patent No. 3133430 (paragraph number 0021, FIG. 1) JP 2001-281561 (paragraph number 0015, FIG. 2)

  The hidden mark visual recognition device of Patent Literature 1 adjusts the irradiation state of illumination light by placing an L-shaped light amount limiter on top of a housing in which a light source is accommodated. Therefore, when the hidden mark of the spectacle lens is not known, the first face plate portion and the second face plate portion are alternately exposed to the illumination optical path, and the state of the light irradiated to the spectacle lens is changed and concealed. It is necessary to visually recognize the mark, and it is troublesome to change the posture of the light amount limiter. In addition, since a ring-shaped fluorescent lamp is used as a light source, it is necessary to use it in the vicinity of a commercial power supply. Further, since the overall height and front and rear dimensions of the apparatus are large, there is an inconvenience that the installation place is limited to a relatively wide space. . A ballast for fluorescent lamps is indispensable, and the case structure is complicated, so that the overall cost is high.

  In the hidden mark visual recognition device of Patent Document 3, it is necessary to replace a plurality of types of background bodies with predetermined positions in the housing and visually recognize the hidden mark of the spectacle lens while switching the irradiation state of the illumination light. Therefore, it takes much time to select a background body suitable for the spectacle lens and specify the hidden mark. Further, like the hidden mark visual recognition device of Patent Document 1, there is an inconvenience that the installation place is limited to a relatively wide space near the commercial power source.

  An object of the present invention is to provide a hidden mark visualizing device for a spectacle lens that can easily switch the irradiation state of illumination light and quickly confirm the hidden mark. An object of the present invention is to provide a hidden mark visualizing device for a spectacle lens that has a simple overall structure, can be made compact, and can be reduced in cost accordingly. An object of the present invention is to provide a hidden mark visualizing device for spectacle lenses that does not require a commercial power source and can be used anywhere, and does not require maintenance over a long period of time.

  The hidden mark visual recognition device for spectacle lenses according to the present invention includes a main body case 1 that houses a light source 3 and a background body 5, and a lens holder 2 that supports a magnifying lens 6. On the upper surface of the main body case 1, there are provided a mounting surface 9 for mounting the spectacle lens 8 and an irradiation opening 10 that opens toward the mounting surface 9. The background body 5 is disposed in the main body case 1 so as to face the magnifying lens 6 through the irradiation opening 10. The light source 3 includes a plurality of LEDs 28 and is disposed obliquely above the background body 5. Thus, the irradiation center axis P of the illumination light emitted from the LED 28 is changed into the first irradiation state in which the spectacle lens 8 placed on the placement surface 9 is directed and the second irradiation state in which the background body 5 is directed. The light source 3 is configured so that it can be switched. A switching tool 39 for switching the light source 3 between the first irradiation state and the second irradiation state is provided on the outer surface of the main body case 1.

  As shown in FIG. 4, the light source 3 includes a plurality of LEDs 28 and a support 27 that supports the LEDs 28. The support 27 has a first irradiation state in which the irradiation center axis P of the LED 28 is directed to the spectacle lens 8 placed on the placement surface 9 and a second irradiation state in which the irradiation center axis P of the LED 28 is directed to the background body. It is supported by the main body case 1 so that it can be displaced. A switching knob 39 for displacing the support 27 is provided on the outer surface of the main body case 1.

  As shown in FIG. 9, the light source 3 includes a plurality of first LED groups 46 that irradiate the spectacle lens 8 placed on the placement surface 9, a plurality of second LED groups 47 that irradiate the background body 5, and these It is comprised with the support body 27 which supports LED group 46 * 47. A changeover switch 39 for switching the lighting state of the first LED group 46 and the second LED group 47 is provided on the outer surface of the main body case 1 (see FIG. 8).

  The focal region of the magnifying lens 6 is matched with the height position of the spectacle lens 8 placed on the placement surface 9. A focal area means an area in focus.

  A battery 16 for lighting the light source is housed inside the main body case 1. The main body case 1 is formed in a hollow box shape, and the battery opening 18 is opened on any one of the front and rear surfaces and the left and right side surfaces thereof. The lens holder 2 is detachably fixed to the main body case 1 so that it also serves as a lid for closing the battery opening 18.

  The support body constituted by the circuit board 27 is fixed to a rotation shaft 30 that is pivotally supported by the main body case 1 so as to be freely rotatable. Between the rotating shaft 30 and the main body case 1, a frictional resistor 31 that holds the circuit board 27 in an arbitrary rotating position is disposed (see FIG. 4).

  In the present invention, the light source 3 for illumination includes a plurality of LEDs 28 and is disposed obliquely above the background body 5 provided in the main body case 1. In addition, the illumination tool can be changed in the irradiation state by changing the direction of the irradiation center axis P of the LED 28 by switching the switching tool 39 provided on the outer surface of the main body case 1. Therefore, according to the hidden mark visual recognition device of the present invention, the irradiation state of the illumination light can be changed corresponding to the difference in the forming material of the spectacle lens 8 by a simple operation of simply switching the switching tool 39. There is no need to change the posture of the light amount limiter or replace the background body, which is indispensable in this type of apparatus, and the hidden mark can be confirmed quickly and accurately.

  In addition, since the light source 3 is configured by using a plurality of LEDs 28 as a light source, extra equipment such as a ballast can be omitted as compared with a conventional device using a fluorescent lamp as a light source, and a fluorescent lamp and a ballast are accommodated. Spaces can be omitted. Therefore, the main body case 1 of the device of the present invention only needs to have a space that can accommodate at least a plurality of LEDs 28, the background body 5 and the like, and simplifies and miniaturizes the overall structure of the hidden mark visual recognition device compared to the conventional device. At the same time, the overall cost can be reduced. When the battery 16 is used as a power source, a commercial power source is unnecessary, and coupled with the fact that the battery 16 can be downsized, there is no limitation on the place of use, and a hidden mark visual recognition device that can be used anywhere can be obtained. Since the LED 28 having a long lifetime is used as the light source, there is an advantage that it is not necessary to perform maintenance of the light source over a long period.

  A plurality of LEDs 28 and a support body 27 that supports these LEDs 28 constitute the light source 3, and the support body 27 is displaced by a switching knob 39 provided on the outer surface of the main body case 1, so that the irradiation center axis P of the LED 28 is changed. If the orientation of the lens can be changed between the first irradiation state and the second irradiation state, the illumination light irradiation state can be changed according to the difference in the formation material of the spectacle lens 8 by a simple operation of switching the switching knob 39. Can be changed. In addition, since the illumination light irradiation state can be changed by operating the switching knob 39 while looking into the magnifying lens 6, the second mark is displayed when the hidden mark 44 cannot be visually recognized in the first irradiation state, for example. Switching to the irradiation state can be performed immediately, and the confirmation work of the hidden mark 44 can be performed quickly. Since the orientation of the irradiation center axis P is switched by changing the posture of the support 27 that supports the LED 28, the amount of operation of the switching knob 39 can be adjusted to finely adjust the irradiation state of the illumination light to the user's favorite state. There are also advantages.

  A plurality of first LED groups 46 that irradiate the spectacle lens 8 placed on the placement surface 9, a plurality of second LED groups 47 that irradiate the background body 5, and a support that supports these LED groups 46 and 47. 27 to configure the light source 3 and operate the changeover switch 39 provided on the outer surface of the main body case 1 to switch the lighting state of both the LED groups 46 and 47, so that the movable part can be wiped out. Durability and reliability can be improved by greatly reducing the probability of equipment failure. In addition, the illumination light characteristics are optimized in accordance with the difference in the material of the spectacle lens 8 such that the illuminances of the LED groups 46 and 47 are different or the emission colors are different. This can be done more effectively.

  When the focal region of the magnifying lens 6 is matched with the height position of the spectacle lens 8 placed on the placement surface 9, the height position of the spectacle lens 8 with respect to the magnifying lens 6 is adjusted, and the spectacle lens 8 is moved to the focal region. It is possible to save the time and effort of positioning. Therefore, the hidden mark 44 can be searched by moving the spectacle lens 8 along the placement surface 9 while looking into the magnifying lens 6, and the hidden mark 44 can be visually recognized more reliably and easily.

  When the battery opening 18 is opened in the peripheral wall of the main body case 1 formed in a hollow box shape and the battery opening 18 is closed with the lens holder 2 attached to and detached from the main body case 1, the lid for closing the battery opening 18 is provided. There is no need to provide it separately, and the case structure can be simplified accordingly and the cost required for manufacturing the hidden mark visual recognition device can be reduced. Since the battery 16 is accommodated inside the main body case 1, the space required for storage and storage of the hidden mark visual recognition device can be reduced as compared with the case where the battery 16 is separately provided outside the main body case 1.

  When the circuit board 27 is fixed to the rotation shaft 30 and the frictional resistor 31 is disposed between the rotation shaft 30 and the main body case 1, the circuit board 27 can be held at an arbitrary rotation position. Therefore, it is possible to reliably prevent the light source 3 switched between the first irradiation state and the second irradiation state from rotating due to an external impact or its own weight and to keep the irradiation center axis P in an appropriate state at all times. it can.

(Example) FIG. 1 thru | or FIG. 7 shows the Example of the hidden mark visual recognition apparatus based on this invention. 1 to 3, the hidden mark visual recognition device includes a main body case 1, a lens holder 2 that is detachably fixed to the back of the main body case 1, a light source 3 that is housed in the main body case 1, a battery unit 4, And a background body 5 and a magnifying lens 6 supported by the lens holder 2.

  The main body case 1 is made of a plastic, vertically long rectangular parallelepiped hollow box, and has a mounting surface 9 for mounting the spectacle lens 8 on its upper surface, and irradiation from the light source 3 at the front and rear center of the mounting surface 9. An irradiation opening 10 for passing light is opened. The irradiation opening 10 is formed in a horizontally long rectangular shape corresponding to the strip-shaped light source 3. The inside of the main body case 1 is divided into an upper compartment 13 and a lower compartment 14 by a partition plate 12 fixed inside the case, the light source 3 and the background body 5 are arranged in the upper compartment 13, and a battery unit in the lower compartment 14. 4 is housed.

  The battery unit 4 includes a battery case 15 that opens upward, and four batteries (AA batteries) 16 that are loaded in the battery case 15. The battery case 15 is detachably fixed to the bottom wall of the lower compartment 14 with a hook-and-loop fastener 17. In order to replace the battery 16, the entire back surface of the main body case 1 is opened as a battery opening 18. When replacing the battery 16, the lens holder 2 is removed, the surface fastener 17 is further separated, and the battery case 15 is taken out of the main body case 1. The entire inner surface of the main body case 1 and at least the upper surface of the partition plate 12 are coated with a black matte paint, thereby preventing the irradiation light of the light source 3 from being reflected by the inner surface of the main body case 1 and the partition plate 12. .

  The lens holder 2 is formed by bending a plastic plate material in an inverted L shape, and the magnifying lens 6 is attached to a circular visual opening 21 opened in the upper surface plate 2a. The magnifying lens 6 is detachably clamped and fixed by the upper surface plate 2a and a presser frame 22 fixed to the lower surface side of the upper surface plate 2a. The lens holder 2 also serves as a lid for closing the battery opening 18, and a majority lower portion of the vertical wall 2 b is fastened and fixed to the main body case 1 with four screws 23. The lens holder 2 can be separated from the main body case 1 by removing the four screws 23. A plate-like stopper 24 that defines the rotation limit of the light source 3 is fixed to the inner surface of the vertical wall 2 b facing the upper section 13. In the state where the lens holder 2 is assembled to the main body case 1, the magnifying lens 6 faces the irradiation opening 10 vertically.

  4 and 2, the light source 3 includes a horizontally-long rectangular circuit board (support) 27 and eight LEDs 28 mounted in a straight line at regular intervals along one long side portion of the circuit board 27. And a rotation shaft 30 fixed to the circuit board 27 with a mounting bracket 29, a friction resistor 31 disposed between the rotation shaft 30 and the main body case 1, and the like. Each LED 28 is formed of a light emitting diode that emits white light, and the adjacent pitch of each LED 28 is set to 5 mm to irradiate strip-shaped illumination light as a whole.

  The light source 3 is disposed obliquely above the case body rear surface side of the background body 5. Specifically, as shown in FIG. 1, the center of the rotating shaft 30 is located at the rear of the case with respect to the vertical virtual central axis connecting the center of the magnifying lens 6 and the center of the irradiation opening 10 and at the center of the upper section 13 in the vertical direction. In this state, the light source 3 is arranged. Thus, by arranging the light source 3 obliquely above and behind the background body 5, it is possible to prevent the direct illumination light emitted from the LED 28 from being applied to the magnifying lens 6.

  The rotating shaft 30 is fixed to the circuit board 27 via Ω-shaped mounting brackets 29 fastened to the circuit board 27 with screws 32, and both side ends thereof are pivotally supported by the left and right side walls of the main body case 1. It is. The frictional resistor 31 is adhesively fixed to the main body case 1 with a fastener 33 and a washer 34 fixed to the rotating shaft 30, a compression coil-shaped spring 35 disposed between both of them 33, 34. The friction body 36 is used. The washer 34 rotates together with the stopper 33 along the rotation shaft 30 and holds the light source 3 at an arbitrary rotation position by the frictional force generated between the washer 34 and the friction body 36 at this time. Can do. A switching knob (switching tool) 39 for rotating and displacing the light source 3 is fixed to the shaft end of the rotating shaft 30 protruding outward from the main body case 1. A power switch 37 for turning on / off the current supplied from the battery unit 4 to the light source 3 is provided on the front surface of the main body case 1.

  As shown in FIG. 5, the background 5 is formed by printing a lattice pattern 41 with a black matte ink on the surface of a glossy white paper or plastic sheet to form bright and dark portions on the entire surface of the sheet. Become. The lattice width b1 of the lattice pattern 41 is set slightly smaller than the length b2 of one side of the square white background 42 surrounded by the lattice pattern 41. The enlarged view shown in FIG. 5 shows the state of the lattice pattern 41 when the diameter of the circle surrounding the periphery of the enlarged view is 10 mm. Thus, by providing the lattice pattern 41, the amount of irradiation light reflected by the background body 5 can be reduced and the anti-glare action can be exhibited. The pattern printed on the paper or plastic sheet does not need to be a lattice pattern, and may be a group of dot-like or spot-like patterns. Further, the background body 5 can be formed by adhering a metal foil piece or glass fine powder excellent in reflectivity to the black matte sheet surface.

  The light source 3 described above rotates the switching knob 39 when visually recognizing the hidden mark provided on the glass spectacle lens 8 and when visually recognizing the hidden mark provided on the plastic spectacle lens 8. Operate to switch the irradiation center axis of LED28. Specifically, when the hidden mark provided on the glass spectacle lens 8 is visually recognized, the irradiation center axis P of the illumination light emitted from the LED 28 is placed on the placement surface 9 as shown in FIG. A first irradiation state in which the spectacle lens 8 is directed obliquely upward and obliquely upward is set. At this time, by bringing the upper edge of the lower surface of the circuit board 27 into contact with the upper edge of the stopper 24, the inclination angle of the irradiation center axis P in the first irradiation state can be made constant and the position can be held by the frictional resistor 31. .

  When the hidden mark provided on the plastic spectacle lens 8 is visually recognized, the irradiation center axis P of the illumination light emitted from the LED 28 is directed obliquely downward toward the background body 5 as shown in FIG. It is set as the 2nd irradiation state which inclines to. At this time, the lower edge of the lower surface of the circuit board 27 is brought into contact with the lower surface of the stopper 24 so that the angle of inclination of the irradiation center axis P in the second irradiation state is constant and the amount of reflected light reflected by the background body 5 is reduced. Can be optimized. Even in this state, the inclined posture of the light source 3 is held by the frictional resistor 31.

  An example of the hidden mark 44 formed on the spectacle lens 8 is shown in FIG. There, the hidden mark 44 is composed of a pair of left and right circles indicating the reference diameter position passing through the center of the lens, and an Arabic numeral display indicating the difference between the power for hyperopia and the power for near vision. The display of Arabic numerals is provided on the front side (front of the case) from the circle display in FIG. Although not shown in the drawing, the center line of the lens, the rough position of the round mark display, or the display for right or left is printed on the convex surface of the spectacle lens 8. These printed displays are wiped away when the lens processing is completed.

  When the hidden mark 44 of the spectacle lens 8 is confirmed, the spectacle lens 8 is placed on the placement surface 9, and the periphery of the spectacle lens 8 is contacted to the lens holder 2 as shown in FIGS. Further, the center line display of the preceding print display is positioned immediately above the rear edge of the irradiation opening 10. In this state, the power switch 37 is turned on to light the LED 28. The light source 3 is switched to the first irradiation state when the spectacle lens 8 is glass, and is switched to the second irradiation state when the spectacle lens 8 is plastic.

  Since the background body 5 in the first irradiation state is not irradiated with the direct irradiation light of the LED 28, the background body 5 looks almost dark in a state where the magnifying lens 6 is looked into. In addition, the background body 5 in the second irradiation state looks blurred in a state where the outline of the lattice pattern 41 is blurred when looking into the magnifying lens 6. This is because the in-focus area of the magnifying lens 6 matches the height position of the spectacle lens 8 placed on the placement surface 9.

  In the above state, the hidden mark 44 can be visually recognized by shifting the spectacle lens 8 to the left or right according to the print display indicating the rough position of the circle display. The hidden mark 44 of the glass spectacle lens 8 is formed in a concave groove shape on the lens surface. Therefore, as shown in FIG. 6, when receiving obliquely upward illumination light emitted from the LED 28, the hidden mark 44 shines by the diffuse reflection action against the background body 5 that looks dark, and can be clearly confirmed. it can.

  The hidden mark 44 of the plastic spectacle lens 8 is formed in a convex rib shape on the lens surface. Therefore, as shown in FIG. 7, when receiving illumination light irradiated from the LED 28 and reflected by the background body 5, the convex rib-shaped hidden mark 44 diffuses the reflected light from the background body 5. As a result, the hidden mark 44 seen with the magnifying lens 6 appears darker than the surrounding portion and can be clearly confirmed as a shadow character.

  As described above, according to the hidden mark visual recognition device of the present invention, the light source 3 is switched between the first irradiation state and the second irradiation state only by rotating the switching knob 39, so that the material for forming the spectacle lens 8 is formed. Since the irradiation state can be changed according to the difference, the hidden mark of the spectacle lens 8 can be quickly and clearly confirmed with less effort.

  Compared with conventional devices that use fluorescent lamps as light sources, extra equipment such as ballasts can be omitted, and the case structure can be simplified. The overall structure of the hidden mark visual recognition device can be greatly simplified, and the external dimensions Can be made sufficiently small to reduce the overall cost. Since the battery 16 is used as a power source, the hidden mark visual recognition device can be used without any problem even at a location far away from the commercial power source. In addition, since the long-life LED 28 is used as the light source, it is not necessary to perform maintenance of the light source over a long period of time, and it is sufficient to occasionally perform maintenance to the extent that the lens holder 2 is removed and the battery 16 is replaced.

  8 and 9 show another embodiment of the hidden mark visual recognition device. There, the structure of the light source 3 is different from the previous embodiment. Specifically, eight first LED groups (LEDs) 46 for irradiating the spectacle lens 8 placed on the placement surface 9, eight second LED groups (LEDs) 47 for irradiating the background body 5, and these The light source 3 is composed of the support 27 that supports the LED groups 46 and 47. The support body 27 includes circuit boards 48 and 49 on which the LED groups 46 and 47 are mounted, and a support frame 50 that supports both the boards 48 and 49 at a predetermined angle. Both ends of the support frame 50 are fixed to the main body case 1.

  The inclination angle of the irradiation center axis P of the first LED group 46 is matched with the inclination angle of the irradiation center axis P of the LED 28 in the first irradiation state in the above-described embodiment, and the irradiation center axis P of the second LED group 47 The tilt angle is made to coincide with the tilt angle of the irradiation center axis P of the LED 28 in the second irradiation state in the above embodiment. If necessary, the light emission characteristics of the LED groups 46 and 47 can be optimized by changing the illuminance of the LED groups 46 and 47 or changing the emission color. Since others are the same as the previous embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted.

  In use, after the power switch 37 is turned on, the changeover switch (switching tool) 39 provided on the side surface of the main body case 1 is switched to the G side or the P side, and either one of the LED groups 46 and 47 is lit. Thus, an illumination state suitable for the glass spectacle lens 8 and the plastic spectacle lens 8 can be formed. If necessary, both LED groups 46 and 47 may be turned on simultaneously.

  In addition to the above-described embodiment, the light source 3 can be arranged in a state of being shifted to the front of the case with respect to the vertical virtual center axis line connecting the center of the magnifying lens 6 and the center of the irradiation opening 10. If necessary, it can be arranged in a state shifted from the imaginary central axis in the case side or oblique side with respect to the previous virtual center axis, and the point is that the illumination light is not directly irradiated on the magnifying lens 6. If it is. The power switch 37 may be a switch in which a pilot lamp (LED) is incorporated.

  The lens central axis of the magnifying lens 6 does not have to be vertical, and can be inclined obliquely. The structure for displacing the irradiation center axis P of the light source 3 from the first irradiation state to the second irradiation state does not have to be a rotation displacement around the rotation shaft 30. For example, the posture of the light source 3 can be changed by guiding a pair of pins fixed to both ends of the circuit board 27 with guide grooves provided in the main body case 1. The main body case 1 does not need to have a square box shape, and can be formed in an arbitrary shape such as a round tube shape or a truncated pyramid shape. The battery opening 18 is opened in the bottom wall of the main body case 1 and can be opened and closed with a dedicated lid.

It is a vertical side view of a hidden mark visual recognition apparatus. It is a perspective view of a hidden mark visual recognition device. It is a top view of a hidden mark visual recognition apparatus. It is a cross-sectional top view which shows the detailed structure of a light source. It is the sectional view on the AA line in FIG. It is a vertical side view which shows the light source of a 1st irradiation state. It is a vertical side view which shows the light source of a 2nd irradiation state. It is a perspective view of the hidden mark visual recognition apparatus which concerns on another Example. It is a vertical side view which shows the structure of the light source which concerns on another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 2 Lens holder 3 Light source 5 Background body 6 Magnifying lens 8 Eyeglass lens 9 Placement surface 10 Irradiation opening 27 Support body (circuit board)
28 LED
30 Rotating shaft 39 Switching tool (switching knob)

Claims (6)

A main body case (1) for housing the light source (3) and the background body (5), and a lens holder (2) for supporting the magnifying lens (6);
On the upper surface of the main body case (1), there are provided a placement surface (9) for placing the spectacle lens (8) and an irradiation opening (10) that opens to face the placement surface (9). And
The background body (5) is disposed in the main body case (1) in a state of facing the magnifying lens (6) through the irradiation opening (10),
The light source (3) includes a plurality of LEDs (28) and is disposed obliquely above the background body (5).
The irradiation central axis (P) of the illumination light emitted from the LED (28) is directed to the first irradiation state in which the spectacle lens (8) placed on the placement surface (9) is directed and the background body (5). The light source (3) is configured so that it can be switched to the second irradiation state.
A hidden mark visual recognition device for a spectacle lens, characterized in that a switching tool (39) for switching the light source (3) between a first irradiation state and a second irradiation state is provided on the outer surface of the main body case (1). The light source (3) is composed of a plurality of LEDs (28) and a support (27) that supports these LEDs (28).
The support (27) has a first irradiation state in which the irradiation central axis (P) of the LED (28) is directed to the spectacle lens (8) mounted on the mounting surface (9), and irradiation of the LED (28). The central axis (P) is supported by the main body case (1) so as to be displaceable to the second irradiation state in which the background body is oriented.
The hidden mark visual recognition device for a spectacle lens according to claim 1, wherein a switching knob (39) for displacing the support (27) is provided on the outer surface of the main body case (1). The light source (3) has a plurality of first LED groups (46) for irradiating the spectacle lens (8) placed on the placement surface (9), and a plurality of second LED groups (47) for irradiating the background body 5. And a support (27) that supports these LED groups (46, 47),
The eyeglass lens hidden mark visualizing device according to claim 1, wherein a changeover switch (39) for switching the lighting state of the first LED group (46) and the second LED group (47) is provided on an outer surface of the main body case (1). .   The hidden mark visual recognition of the spectacle lens according to claim 1, 2 or 3, wherein the focal region of the magnifying lens (6) matches the height position of the spectacle lens (8) placed on the placement surface (9). apparatus. A battery (16) for lighting the light source is accommodated in the body case (1).
The main body case (1) is formed in a hollow box shape, and the battery opening (18) is opened on any one of the front and rear surfaces and the left and right side surfaces thereof,
The concealment of the spectacle lens according to any one of claims 1 to 4, wherein the lens holder (2) serves as a lid for closing the battery opening (18) and is detachably fixed to the main body case (1). Mark visual recognition device. A support body composed of a circuit board (27) is fixed to a rotation shaft (30) supported rotatably by the main body case (1).
A friction resistor (31) for holding the circuit board (27) at an arbitrary rotation position is disposed between the rotation shaft (30) and the main body case (1). The hidden-mark visual recognition apparatus of the spectacle lens of 5.

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