CN109211525A - Lens eccentricity measures accessory and lens eccentricity measurement device - Google Patents
Lens eccentricity measures accessory and lens eccentricity measurement device Download PDFInfo
- Publication number
- CN109211525A CN109211525A CN201810480088.XA CN201810480088A CN109211525A CN 109211525 A CN109211525 A CN 109211525A CN 201810480088 A CN201810480088 A CN 201810480088A CN 109211525 A CN109211525 A CN 109211525A
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- Prior art keywords
- lens
- accessory
- holding member
- eccentricity
- lens eccentricity
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
- G01M11/0214—Details of devices holding the object to be tested
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0221—Testing optical properties by determining the optical axis or position of lenses
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Lens Barrels (AREA)
Abstract
The present invention provides a kind of lens eccentricity measurement accessory and lens eccentricity measurement device, and for the bias measurement of lens, lens eccentricity measurement accessory includes lens supporting part, and there are the lens of mounting lens to load region；With the holding member of three or more, its periphery for being located at lens mounting region, it can be contacted with the outer peripheral edge of lens, at least one holding member is the lens rotation holding member with the lens rotating mechanism for rotating lens, and at least two holding members are the periphery in region can be loaded from lens towards the removable holding member of inner circumferential radially moved.
Description
Technical field
The present invention relates to a kind of lens eccentricity measurement accessory and lens eccentricity measurement devices.
Background technique
In the past, in lens eccentricity measurement device, it is known that there are the lens by the bearing of measure object lens for that can rotate
The structure (Japanese Unexamined Patent Publication 2005-221471 bulletin) of bias measurement accessory.
Above-mentioned lens eccentricity measurement accessory is made by two benchmark pillars being arranged in the mounting surface of mounting lens
Obtain the structure of lens alignment position.Therefore, it in order to which the lens to different lens diameters are measured, needs for each lens
Diameter prepares different accessories.
Summary of the invention
The first purpose of a mode of the invention is to provide the lens eccentricity for the lens for being able to maintain different lens diameters
It measures accessory and the lens eccentricity measurement device of the lens of different lens diameters can be measured.
A mode according to the present invention, the lens eccentricity for providing a kind of eccentric measurement for lens measure accessory, tool
Have: there are lens supporting part the lens of mounting lens to load region；With three or more holding members, it is located at lens and carries
The periphery in region is set, can be contacted with the outer peripheral edge of lens, at least one holding member is with the lens rotation for rotating lens
The lens rotation holding member of rotation mechanism, at least two holding members are can be in the periphery from lens mounting region towards inner circumferential
The removable holding member radially moved.
There is lens eccentricity measurement device lens eccentricity to measure accessory.
A mode according to the present invention, the lens eccentricity measurement for providing a kind of lens for being able to maintain different lens diameters are auxiliary
Tool.
A mode according to the present invention provides a kind of lens eccentricity measurement dress of lens that can measure different lens diameters
It sets.
The present invention can be more clearly understood that referring to attached drawing by the detailed description of the preferred embodiment for the present invention below
Above-mentioned and other feature, element, step, features and advantages.
Detailed description of the invention
Fig. 1 is the cross-sectional view for indicating the lens eccentricity measurement device of embodiment.
Fig. 2 is the top view of lens eccentricity measurement accessory.
Fig. 3 is the top view for indicating lens supporting part.
Fig. 4 is the cross-sectional view along the line B-B in Fig. 3.
Specific embodiment
Hereinafter, using attached drawing, embodiments of the present invention will be described.
In addition, the scope of the present invention embodiment not limited to the following, within the scope of the technical idea of the present invention can
Any change.
Fig. 1 is the cross-sectional view for indicating the lens eccentricity measurement device of present embodiment.Fig. 2 is lens eccentricity measurement accessory
Top view.Fig. 3 is the top view for indicating lens supporting part.Fig. 4 is the cross-sectional view along the line B-B in Fig. 3.
Hereinafter, measurement light is irradiated from the vertical lower section of lens in the state of horizontally supporting measure object lens, it is right
It is illustrated through lens to the structure that the measurement light that vertical top is projected is detected.In the present specification, such as
Shown in Fig. 1, will by mounting lens 1 lens load region 120 planar observation when center and along vertical
The axis that direction extends is set as reference axis J, and the face that lens are loaded in lens mounting region 120 is set as datum level S.Datum level S
It is the face vertical with reference axis J.In the axial direction of reference axis J, it will be set as upper direction from datum level S towards the direction of lens 1, it will
It is set as lower direction towards the direction of the opposite side of lens 1, the shape and positional relationship in each portion are illustrated.
As shown in Figure 1, lens eccentricity measurement device 100 includes the lens eccentricity measurement accessory for keeping measure object lens 1
10；It is configured at the light supply apparatus 50 of the downside of lens eccentricity measurement accessory 10；And it is configured at lens eccentricity measurement accessory 10
The measurement device 60 of upside.Lens eccentricity measurement device 100 is also possible to light supply apparatus 50 and is configured at lens eccentricity measurement accessory
10 upside, measurement device 60 are configured at the structure of the downside of lens eccentricity measurement accessory 10.
Lens eccentricity measurement device 100 is with the bias between the optical axis heart and the outer diameter heart of transmission mode measurement lens 1.As
Measure object lens 1, such as the convex lens, concavees lens, meniscus lens of enumerating monomer etc..Lens 1 also can have lens mount.This
Outside, it can be the lens barrel with multiple lens as lens 1.
Lens eccentricity measurement accessory 10 includes disk-shaped assistive device body 11；It is fixed on the central portion of assistive device body 11
Columned lens supporting part 12；It is configured at (the removable maintaining part of the first adjustment screw 21 of the peripheral part of lens supporting part 12
Part) and second adjustment screw 22 (removable holding member)；And it is configured at the lens rotation of the peripheral side of lens supporting part 12
Holding member 30.The first adjustment screw 21, second adjustment screw 22 and lens rotation holding member 30 all can be with lens 1
The holding member of outer peripheral edge contact.
Assistive device body 11 includes disk-shaped plate-like portion 111；In the axial direction through the perforation of the central portion of plate-like portion 111
Hole 112；And upper side opening and two groove portions 113,114 for extending radially in plate-like portion 111.Groove portion 113,114
The end of radially inner side is in 112 inner opening of through hole, the outer peripheral surface upper opening of the end of radial outside in plate-like portion 111.Plate
Portion 111 has long hole 113a, the 114a for running through plate-like portion 111 in the axial direction in the bottom of groove portion 113,114.Long hole 113a along
Groove portion 113 extends.Long hole 114a extends along groove portion 114.
Lens supporting part 12 includes the columned supporting part ontology 121 axially extended；In the axial direction through bearing
The through hole 121a at the center when planar observation of portion's ontology 121；And it is upward from the upper surface peripheral part of supporting part ontology 121
The bearing wall portion 122 for the semi-circular cylindrical that side extends.
Lens supporting part 12 in the upper face center portion of supporting part ontology 121 there are the lens of mounting lens 1 to load region
120.Inside opening of the through hole 121a of lens supporting part 12 in lens mounting region 120.In the present embodiment, supporting part
The upper surface of ontology 121 is the datum level S of lens eccentricity measurement device 100.
The outer peripheral surface 123 of lens supporting part 12 includes the first outer peripheral surface 123a, through hole of the diameter than assistive device body 11
112 is big；Second outer peripheral surface 123b, is located at the downside of the first outer peripheral surface 123a, and diameter is smaller than through hole 112；And stepped part
123c, between the first outer peripheral surface 123a and the second outer peripheral surface 123b.Second outer peripheral surface 123b of lens supporting part 12 from
The upside of assistive device body 11 is inserted into through hole 112.Stepped part 123c is connected to the upper surface of plate-like portion 111, prevents lens
The movement of supporting part 12 in the axial direction.
Supporting wall portion 122 has in thickness direction (radial direction of lens supporting part 12) through the interior spiral shell of bearing wall portion 122
Line portion 124 and internal thread part 125.The first adjustment screw 21 is chimeric with internal thread part 124.Second adjustment screw 22 and internal screw thread
Portion 125 is chimeric.
The first adjustment screw 21 includes external thread part 21a；Positioned at the knob 21b of the one end of external thread part 21a；And
Convex shaped part 21c positioned at the other end of external thread part 21a.Convex shaped part attenuates with towards the lens side.Second adjustment
Screw 22 includes external thread part 22a；Positioned at the knob 22b of the one end of external thread part 22a；And positioned at external thread part 22a's
The tapering convex shaped part 22c in the end of the other end.The first adjustment screw 21 and second adjustment screw 22 are inserted from radial outside respectively
Enter into internal thread part 124 and internal thread part 125.The first adjustment screw 21 contacts at convex shaped part 21c with lens 1.Second adjusts
Whole screw 22 contacts at convex shaped part 22c with lens 1.Knob 21b, 22b are configured at the radial outside of bearing wall portion 122.
As shown in Figure 3 and Figure 4, lens supporting part 12 has in the upper surface of supporting part ontology 121 from internal thread part 124
Groove portion 124a that the end of inner circumferential side extends to radially inner side and inside to diameter from the end of the inner circumferential side of internal thread part 125
The groove portion 125a that side extends.
Groove portion 124a, 125a has and internal thread part 124,125 continuous thread grooves in inner surface.According to this structure, by
Increase in the thread groove chimeric with the first adjustment screw 21 and second adjustment screw 22, therefore the first adjustment screw 21 and second is adjusted
Whole screw 22 is not easy to tilt, being capable of stable support lens 1.Further, since can be respectively by a process come machining internal thread
Portion 124 and groove portion 124a and internal thread part 125 and groove portion 125a, therefore can be carried out efficiently manufacture.
In addition, groove portion 124a, 125a can be the slot without thread groove.
Stored respectively in groove portion 124a, 125a the first adjustment screw 21 and second adjustment screw 22 from bearing wall portion
122 inner circumferential is towards radially inner side a part outstanding.With this configuration, the first adjustment screw 21 and second adjustment screw 22
Position of a part positioned at the upper surface than supporting part ontology 121 on the lower.Prevent lens 1 from entering the first adjustment spiral shell as a result,
The downside of silk 21 and second adjustment screw 22.
As depicted in figs. 1 and 2, lens rotation holding member 30 includes sliding block 31, the lens positioned at the upper surface of sliding block 31
Rotating mechanism 32 and the fixed mechanism 33 that sliding block 31 is fixed on to assistive device body 11.
Sliding block 31 is inserted into the groove portion 114 of assistive device body 11, can be moved radially in groove portion 114.Sliding block
31 upper surface is comprising the ladder-like of height different the first face 131 and the second face 132.Passing through through sliding block 31 in the axial direction
Through-hole 31a is in 131 upper opening of the first face for being located at radially inner side.It is being located at diameter through the through hole 31b of sliding block 31 in the axial direction
132 upper opening of the second face outward.
Lens rotating mechanism 32 has the support shaft 136 of disk-shaped rotary body 135 and rotating body for supporting 135.Rotation
The circular elastomeric element 135b that body 135 has circular wheel 135a and is configured on the outer peripheral surface of wheel 135a.Wheel
135a can rotatably be supported on support shaft 136.Support shaft 136 is pressed into through hole 31a and is fixed.Rotary body 135
Thickness it is identical as the ladder height between the first face 131 and the second face 132.
The end that fixed mechanism 33 has the bolt 137 being inserted into through hole 31b from downside and is embedded in bolt 137
The knob nut 138 of end.Bolt 137 is inserted by the long hole 114a of groove portion 114 from the lower surface of assistive device body 11 and is passed through
In through-hole 31b.The bolt head 137a of bolt 137 is connected to the lower surface of assistive device body 11.Fixed mechanism 33 passes through bolt head
Portion 137a clamps assistive device body 11 with knob nut 138 and is fixed with sliding block 31.
Reference line F shown in Fig. 2 is center and the lens rotation holding for loading region 120 by lens on datum level S
The straight line of the end 30a of lens mounting 120 side of region of component 30.The end 30a of lens rotation holding member 30 is rotary body
135 with the contact points of lens 1.
The first adjustment screw 21 and second adjustment screw 22 are configured to symmetrical about reference line F line.The first adjustment spiral shell as a result,
The position of 21 supporting lens 1 of silk, with the positions of 22 supporting lens 1 of second adjustment screw be configured to relative to from rotary body 135 to
The end 30a that lens 1 transmit rotary force is equidistant.Therefore, when rotating lens 1, lens 1 can be more evenly kept,
Deviate and fall off in the position for being able to suppress lens 1.
Light supply apparatus 50 projects measurement light towards lens 1.Light supply apparatus 50 is for example comprising laser light source and will be from laser
The laser beam that light source projects is guided to the optical system on the surface of lens 1.
60 pairs of the measurement device measurement light through lens 1 detects.
Measurement device 60 is for example comprising the image pickup part that is made of CCD camera and the measurement light that will transmit through lens 1 guidance
To the optical system of CCD camera.Measurement device 60 also may include operational part, and operational part is from the measurement light obtained in shoot part
Trajectory calculation go out the eccentricity of lens 1.
(lens eccentricity measurement)
Hereinafter, being illustrated to having used the lens eccentricity of lens eccentricity measurement device 100 to measure.
In measurement, measure object lens 1 are arranged at the lens supporting part 12 of lens eccentricity measurement accessory 10.
Before lens 1 are arranged, so that the fixed mechanism 33 of lens rotation holding member 30 is locking.Later, sliding block 31 to
The radial outside of assistive device body 11 is mobile.Rotary body 135 is retreated from lens supporting part 12 as a result, so that in lens supporting part 12
Upper surface vacate setting lens 1 space.
Lens 1 are set to be enclosed by the end of the first adjustment screw 21, the end of second adjustment screw 22 and rotary body 135
Around lens mounting region 120 in.Later, sliding block 31 is mobile to 12 side of lens supporting part.Lens 1 are pressed by rotary body 135, with
The end of the first adjustment screw 21 and the end of second adjustment screw 22 abut.It is pressed in the elastomeric element 135b of rotary body 135
The position of lens 1, fixed mechanism 33 are tightened, and sliding block 31 is fixed.Lens 1 pass through the end of the first adjustment screw 21, second
It adjusts the end of screw 22 and the outer peripheral surface of rotary body 135 and is supported.Measurement person is by revolving rotary body 135 with finger etc.
Turn, thereby, it is possible to be pivoted the lens for being supported on lens supporting part 12 1.
In lens eccentricity measurement accessory 10, as shown in Figure 1, the first adjustment screw 21 is coniform convex shaped part 21c's
Lateral position is contacted with the outer peripheral edge of lens 1.The vertex of convex shaped part 21c is located on the central axis O of the first adjustment screw 21, be located at than
The upper position in the upper end of the outer peripheral edge of lens 1.The part towards downside of the side of convex shaped part 21c and lens 1 as a result,
The upper-end contact of outer peripheral edge, lens 1 are maintained as being pressed from the top down by convex shaped part 21c.Therefore, revolve lens 1
When turning, it is suppressed that lens 1 float up.Second adjustment screw 22 is same, by the convex shaped part 22c of end towards downside
It is partially contacted with lens 1, inhibits floating for lens 1.
Convex shaped part 21c, 22c be it is coniform, therefore, when rotating the first adjustment screw 21 and second adjustment screw 22,
The shape in the face contacted with lens 1 is fixed.Therefore, the first adjustment screw 21 and second adjustment screw 22 can be protected steadily
Hold a variety of lens 1 of different-diameter.
The elastomeric element 135b of the peripheral part of rotary body 135 is configured in the position flexible deformation contacted with lens 1.By
This, therefore 135 Continued depression lens 1 of rotary body when rotating lens 1, are able to suppress beating for lens 1 and rotary body 135
It is sliding.Measurement person can be smooth and accurately rotates lens 1.
As shown in Figure 1, the upper end 135c of elastomeric element 135b is located at the height side of the central axis O than the first adjustment screw 21
To the upper position in center.As a result, when variation has occurred in the height (axial length) of lens 1, bullet can also be made
The periphery face contact of property component 135b and lens 1, can obtain the effect of anti-slip.
In addition, elastomeric element 135b extends to the upside of the outer circumference end of lens 1 in the axial direction, therefore, lens 1 are pressed into
The lower portion of elastomeric element 135b, the upper portion of elastomeric element 135b cover the outer peripheral edge of lens 1 from upside.As a result, thoroughly
The outer peripheral edge of mirror 1 is pressed by elastomeric element 135b from upside, to inhibit floating for lens 1.
In order to measure the bias of lens 1, light L is measured from light supply apparatus 50 and is irradiated to lens 1, through the measurement light of lens 1
L1 becomes the state that measured device 60 detects.Measurement person operates rotary body 135 and rotates lens 1.Pass through measurement device 60
Obtain the track of measurement light L1 when rotating lens 1.Measurement person can calculate according to the track of the measurement light L1 of acquirement
The eccentricity of mirror 1.
Holding member of the lens eccentricity measurement accessory 10 as supporting lens 1 with the above structure, has the first adjustment
Screw 21 and second adjustment screw 22.The first adjustment screw 21 and second adjustment screw 22 only pass through operation knob 21b and knob
22b and rotate, it will be able to adjust and be capable of fixing from bearing wall portion 122 to lens load the overhang outstanding of region 120.By
This, can be measured accessory 10 for various sizes of a variety of lens 1 by a lens eccentricity and be configured at lens mounting region 120
Center.According to the lens eccentricity measurement device 100 with lens eccentricity measurement accessory 10, even different types of lens 1
Bias can efficiently be measured.
In the present embodiment, as removable holding member, the first adjustment screw 21 and second adjustment screw 22 are enumerated
It is illustrated, but is not limited to the structure.As removable holding member, as long as can be in the radial direction of lens supporting part 12
The component of upper movement can then use.Specifically, as removable holding member, if using rodlike component, saturating
Mirror mounting region 120 radially can swimmingly move.For example, removable holding member can be by metal, resin, ceramics
Etc. compositions pole or square rod.It, can also be in bearing wall portion 122 when using pole or square rod as removable holding member
The mechanism of the upper fixed removable holding member of setting.As fixed mechanism, enumerates in a manner of tightening and fix removable guarantor
Hold the fixed screw etc. of the lateral surface of component.
As removable holding member, when using pole or square rod without screw mechanism, can also with lens 1
The terminal part setting of contact is towards the inclined surface of downside (lens load 120 side of region).That is, can also be in removable holding member
End be arranged with the radial outside towards lens 1 and be located at downside inclined surface.Alternatively, can be in removable holding member
Terminal part convex shaped part as the first adjustment screw 21 is set.By above structure, downward power can be made to act on
The outer peripheral edge of mirror 1 is kept, and floating for lens 1 is able to suppress.
Claims (16)
1. a kind of lens eccentricity measures accessory, the bias measurement for lens, which is characterized in that
The lens eccentricity measurement accessory includes
There are lens supporting part the lens for loading the lens to load region；With
Three or more holding members are located at the periphery in lens mounting region, can connect with the outer peripheral edge of the lens
Touching,
At least one described holding member is the lens rotation holding member with the lens rotating mechanism for making the lens rotation,
At least two holding members are can be in periphery radially the moving towards inner circumferential from lens mounting region
Removable holding member.
2. lens eccentricity according to claim 1 measures accessory, which is characterized in that
The component that the removable holding member is bar-like.
3. lens eccentricity according to claim 2 measures accessory, which is characterized in that
The removable holding member has external thread part,
The lens supporting part has the internal thread part being fitted into for the external thread part.
4. lens eccentricity described according to claim 1~any one of 3 measures accessory, which is characterized in that
The removable holding member the position contacted with the lens have with the radial outside towards the lens and
Positioned at the inclined surface of downside.
5. lens eccentricity according to claim 4 measures accessory, which is characterized in that
The removable holding member has at the position contacted with the lens to attenuate convex with towards the lens side
Shape portion.
6. lens eccentricity described in any one of according to claim 1~3 and 5 measures accessory, which is characterized in that
The lens rotating mechanism has the rotary body rotated around vertical axes,
A complete cycle on the outer peripheral surface of the rotary body in the outer peripheral surface is provided with elastomeric element.
7. lens eccentricity according to claim 4 measures accessory, which is characterized in that
The lens rotating mechanism has the rotary body rotated around vertical axes,
A complete cycle on the outer peripheral surface of the rotary body in the outer peripheral surface is provided with elastomeric element.
8. lens eccentricity according to claim 6 measures accessory, which is characterized in that
The upper end of the elastomeric element is located at the position more upper than the center of the short transverse of the removable holding member
It sets.
9. lens eccentricity according to claim 7 measures accessory, which is characterized in that
The upper end of the elastomeric element is located at the position more upper than the center of the short transverse of the removable holding member
It sets.
10. according to claim 1~3, lens eccentricity described in any one of 5 and 7~9 measures accessory, which is characterized in that
The lens eccentricity measurement accessory has the lens rotation holding member and two removable holding members,
The end of area side is loaded relative to the lens by the lens rotation holding member and the lens load area
The straight line at the center when planar observation in domain, two removable holding members are configured in line symmetry.
11. lens eccentricity according to claim 4 measures accessory, which is characterized in that
The lens eccentricity measurement accessory has the lens rotation holding member and two removable holding members,
The end of area side is loaded relative to the lens by the lens rotation holding member and the lens load area
The straight line at the center when planar observation in domain, two removable holding members are configured in line symmetry.
12. lens eccentricity according to claim 6 measures accessory, which is characterized in that
The lens eccentricity measurement accessory has the lens rotation holding member and two removable holding members,
The end of area side is loaded relative to the lens by the lens rotation holding member and the lens load area
The straight line at the center when planar observation in domain, two removable holding members are configured in line symmetry.
13. a kind of lens eccentricity measurement device, which is characterized in that
The lens eccentricity measurement device has lens described in any one of claims 1 to 3,5,7~9,11 and 12 inclined
The heart measures accessory.
14. a kind of lens eccentricity measurement device, which is characterized in that
There is the lens eccentricity measurement device lens eccentricity as claimed in claim 4 to measure accessory.
15. a kind of lens eccentricity measurement device, which is characterized in that
There is the lens eccentricity measurement device lens eccentricity as claimed in claim 6 to measure accessory.
16. a kind of lens eccentricity measurement device, which is characterized in that
There is the lens eccentricity measurement device lens eccentricity described in any one of claim 10 to measure accessory.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017132033A JP2019015567A (en) | 2017-07-05 | 2017-07-05 | Lens eccentricity measuring jig and lens eccentricity measuring device |
| JP2017-132033 | 2017-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109211525A true CN109211525A (en) | 2019-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810480088.XA Pending CN109211525A (en) | 2017-07-05 | 2018-05-18 | Lens eccentricity measures accessory and lens eccentricity measurement device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019015567A (en) |
| CN (1) | CN109211525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116718148A (en) * | 2023-08-10 | 2023-09-08 | 菏泽明钰光电科技有限公司 | Accurate size measurement equipment for optical lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116718148A (en) * | 2023-08-10 | 2023-09-08 | 菏泽明钰光电科技有限公司 | Accurate size measurement equipment for optical lens |
| CN116718148B (en) * | 2023-08-10 | 2023-11-03 | 菏泽明钰光电科技有限公司 | Accurate size measurement equipment for optical lens |
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| Publication number | Publication date |
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| JP2019015567A (en) | 2019-01-31 |
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