CN109407335A - A kind of adjustment device and method of adjustment for lens group adjustment - Google Patents
A kind of adjustment device and method of adjustment for lens group adjustment Download PDFInfo
- Publication number
- CN109407335A CN109407335A CN201811530316.6A CN201811530316A CN109407335A CN 109407335 A CN109407335 A CN 109407335A CN 201811530316 A CN201811530316 A CN 201811530316A CN 109407335 A CN109407335 A CN 109407335A
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- mirror assembly
- lens group
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- adjustment
- spectroscope
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000002834 transmittance Methods 0.000 claims abstract description 3
- 230000003287 optical effect Effects 0.000 claims description 34
- 238000003384 imaging method Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000004446 light reflex Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000011156 evaluation Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000013019 agitation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/32—Fiducial marks and measuring scales within the optical system
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
It is a kind of for lens group adjustment adjustment device and method of adjustment, the adjustment device include point light source, cross-graduation plate, the first mirror assembly, the second mirror assembly, third mirror assembly, the first spectroscope, object lens and camera；First mirror assembly, the first spectroscope, object lens and camera are sequentially arranged, and camera is located at the focus of object lens；Point light source, cross-graduation plate and the second mirror assembly are sequentially arranged, lens group to be adjusted is arranged between cross-graduation plate and the second mirror assembly, cross-graduation plate is located in the focus of lens group to be adjusted, the light of second mirror assembly reflectance-transmittance lens group, the light emission through the reflection of the second mirror assembly is to the first spectroscope；A part light splitting directive object lens for the light that first spectroscope reflects the second mirror assembly, another part light form transmitted light path through the first spectroscope.The adjustment mode that the present invention adjusts lens group is simple, quickly and is more convenient for making evaluation to adjustment result.
Description
Technical field
The present invention relates to vision-based detection and radiographic measurement technical field, especially a kind of adjustment dress for lens group adjustment
It sets and method of adjustment.
Background technique
In technical field of vision detection, particularly with high resolution detection, it is desirable that in detection device each detecting instrument it
Between must strictly meet a certain known geometrical relationship, while to the aligned relationship requirement between lens group each in detecting instrument
Very strict, only precision positioning between lens group has good light axis consistency, just can guarantee the detection essence of detecting instrument
Degree, to improve vision-based detection precision.
In the prior art, the adjustment method of adjustment of lens group is needed by accurate mechanical fastening system auxiliary, then by
Technical staff with certain lens group adjustment experience manually adjusts, and lens group adjusted is evaluated by final testing result and filled
It adjusts and whether meets the requirements.Such mode is time-consuming, and very high to the adjustment skill requirement of adjustment personnel, is difficult to do to adjustment result
Unified evaluation out.
Summary of the invention
The present invention provides a kind of adjustment device and method of adjustment for lens group adjustment, adjustment mode is simple, quickly and
It is more convenient for making evaluation to adjustment result.
According to the first aspect of the invention, the present invention provides a kind of adjustment device for lens group adjustment, including light
Source, cross-graduation plate, the first mirror assembly, the second mirror assembly, third mirror assembly, the first spectroscope, object lens with
And camera；First mirror assembly, the first spectroscope, object lens and camera are located in main shaft optical path and are sequentially arranged, described
Camera is located at the focus of object lens；The point light source, cross-graduation plate and the second mirror assembly are sequentially set along light incident direction
Set, lens group to be adjusted for be arranged between cross-graduation plate and the second mirror assembly, and cross-graduation plate be located to
In the focus for adjusting lens group, the second mirror assembly is used for the light of reflectance-transmittance lens group, reflects through the second mirror assembly
Light along perpendicular to main shaft optical path the first spectroscope of direction directive；First spectroscope is used for the second mirror assembly is anti-
A part light splitting directive object lens for the light penetrated, the light that another part is reflected through the second mirror assembly penetrate first spectroscope
To form transmitted light path；The third mirror assembly is located on the transmitted light path and for will transmit through first spectroscope
Light reflex to the first spectroscope along the direction for being parallel to transmitted light path, the third mirror assembly includes for placing wait adjust
The datum level of whole lens group.
Preferably, first mirror assembly is prism of corner cube or plane mirror.
Preferably, second mirror assembly is pentaprism, right-angle prism or plane mirror.
Preferably, the third mirror assembly further includes the second spectroscope and prism of corner cube, second spectroscope and
Datum level is sequentially arranged along transmitted light path, and the prism of corner cube is located on second spectroscopical light splitting optical path.
Preferably, the lens group to be detected forms either single object lens, and lens to be detected by multiple lens
Group has unlimited-finite conjugate or finite-infinite conjugate property.
According to the second aspect of the invention, the present invention provides a kind of method of adjustment for lens group adjustment, including as follows
Step:
(1) above-mentioned adjustment device is used, the light that the second mirror assembly is arranged in lens group to be adjusted is incident
Mouthful, it is sequentially arranged point light source, cross-graduation plate, lens group and the second mirror assembly along optical path；
(2) magazine imaging is observed, when there are when two hot spots not being overlapped, adjust lens group with respect to optical path in imaging
Angle and/or longitudinal separation along optical path direction until two hot spots in imaging are overlapped complete the self-correcting of adjustment device
It is quasi-；
(3) self-alignment adjustment device will be completed and lens group to be adjusted is placed on datum level by original optical path direction,
Observe magazine imaging, when in imaging there are when two hot spots not being overlapped, adjustment lens group with respect to optical path angle, up to
Two hot spots in imaging are overlapped, and complete lens group adjustment.
The present invention is based on optical autocollimating principles, it is only necessary to adjust front and back and deflection clip of the lens group to be adjusted along optical path
Angle is overlapped the hot spot observed in camera, and the requirement to operator reduces, and keeps adjustment mode simpler.Meanwhile passing through
It observes two hot spots whether to be overlapped to determine whether complete the adjustment to lens, more to the evaluation of lens group result adjusted
Intuitively.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the adjustment device for lens group adjustment of an embodiment of the present invention；
Fig. 2 is the self calibration light path schematic diagram of the adjustment device for lens group adjustment of an embodiment of the present invention；
Fig. 3 is the adjustment light path schematic diagram of the adjustment device for lens group adjustment of an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the adjustment device for lens group adjustment of another embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the adjustment device for lens group adjustment of another embodiment of the invention；
Fig. 6 is optical autocollimating schematic diagram.
Specific embodiment
Of the invention so-called " equal " or " identical " refer to it is equal or identical in view of reasonable error, and
It is equal or identical in non-absolute sense.Light irradiating angle, reflection angle or refraction angle determined by the present invention are
It is centainly lost and there are made when reasonable error in the case that in view of light exists in the medium.Below by specific reality
Applying mode combination attached drawing, invention is further described in detail.
The embodiment of the present invention provides a kind of adjustment device for lens group adjustment, as shown in Figure 1 comprising point light source
100, cross-graduation plate 101, the first mirror assembly 5, the second mirror assembly 1, third mirror assembly, the first spectroscope 2,
Object lens 3 and camera 7.First spectroscope 2 can be Amici prism, can have opposite light incident direction in point at 45 degree of angles
Some light is turn 90 degrees light splitting partially and projected by smooth surface, and another part light then penetrates the first spectroscope 2.First reflection microscope group
Part 5, the first spectroscope 2, object lens 3 and camera 7 are sequentially arranged in main shaft optical path, and are coaxially disposed.First mirror assembly 5
Light is reflexed into the first spectroscope 2, the camera 7 is then located at the focal position of object lens 3, will assemble by the light of object lens 3
Onto the camera lens of camera 7, camera 7 shoots the imaging of light.Second mirror assembly 1 is located at the incident light of light
On the road, cross-graduation plate 101 is close to the placement of point light source 100, and lens group 102 to be detected is for being placed on the second mirror assembly
1 entrance port adjusts the coke that cross-graduation plate 101 and point light source 100 make cross-graduation plate be located exactly at lens group 102 to be detected
At point, the light for being emitted point light source 100 forms directional light after lens group 102 to be detected.Second mirror assembly 1 is used
In reflected parallel light, the light through the reflection of the second mirror assembly 1 is along the first spectroscope of direction directive 2 perpendicular to main shaft optical path.
A part light splitting directive object lens 3 for the light that first spectroscope 2 is used to reflect the second mirror assembly 1, another part warp
The light of second mirror assembly 1 reflection is through first spectroscope 2 to form transmitted light path.Third mirror assembly position
In reflexing to the along the direction for being parallel to transmitted light path on the transmitted light path and for will transmit through the light of first spectroscope 2
One spectroscope 2.
Its working principles are as follows: point light source is flat through being formed after lens group 102 to be detected after cross-graduation plate
Light is reflected towards the first spectroscope 2 to the second mirror assembly 1, the second mirror assembly 1 by row light emission, and the first spectroscope 2 will
Light is divided into two bundles light, and wherein light beam forms first hot spot by object lens 3 in the shooting picture of camera 7.Another part
Light passes through 2 directive third mirror assembly of the first spectroscope, and third mirror assembly then includes the second spectroscope 4 and pyramid
Prism 6, second spectroscope 4 are located on the transmitted light path of the first spectroscope 2, and the prism of corner cube 6 is located at the second spectroscope 4
Reflected light path on, a part of the light by the reflection of the second mirror assembly 1 is through the first spectroscope 2 and directive second divides
Light microscopic 4, the second spectroscope 4 by light spectral transmission to lens group datum clamp face 8 to be adjusted, the light reflected through datum level 8
It is again passed through the second spectroscope 4,2 rear portion light of the first spectroscope reflexes to the first mirror assembly 5, the first reflection microscope group
Light is reflexed to the first spectroscope 2 by part 5, and some light penetrates the first spectroscope 2, by directive camera 7 after object lens 3,
Second hot spot is formed in the shooting picture of camera 7.Based on optical autocollimating principle, if lens group optical axis and datum clamp face
Level, the first hot spot and the second hot spot are necessarily overlapped, can judge in this way lens group and datum clamp face whether water
It is flat.
The embodiment of the adjustment device of said lens group adjustment is that the structure of default adjustment device has been assembled rationally, is actually made
With in the process, the problem of reduction in order to prevent because of the measurement accuracy caused by the error of device itself, it should exchange engagement positions into
Row self calibration.
On the basis of a upper embodiment, the adjustment device of above-described embodiment is acted on into self-calibrating device.As shown in Fig. 2,
The light that point light source 100 issues passes through cross-graduation plate 101, then through formation directional light after lens group 102 to be detected and penetrates
To the second mirror assembly 1, the second mirror assembly 1 is for directional light to be turn 90 degrees partially, along the direction perpendicular to main shaft optical path
Light is divided into two bundles light by the first spectroscope of directive 2, the first spectroscope 2, and wherein light beam is by object lens 3, in the shooting of camera 7
First hot spot is formed on picture.Another part light passes through 2 directive third mirror assembly of the first spectroscope, third reflection
Mirror assembly then includes the second spectroscope 4 and prism of corner cube 6, and second spectroscope 4 is located at the transmitted light path of the first spectroscope 2
On, the prism of corner cube 6 is located on the reflected light path of the second spectroscope 4, and one of the light by the reflection of the second mirror assembly 1
Part is through the first spectroscope 2 and the second spectroscope of directive 4, and the second spectroscope 4 is by light dichroic reflection to prism of corner cube 6, angle
Light is reflexed to the second spectroscope 4 by cone prism 6, and light is reflexed to the first spectroscope 2, the first spectroscope 2 by the second spectroscope 4
Reflection light reach the reflective light after the first mirror assembly 5 and again pass by the first spectroscope 2, some light penetrates
First spectroscope 2 forms second hot spot by directive camera 7 after object lens 3 in the shooting picture of camera 7.
Based on optical autocollimating principle, if each structure member assembles rationally, the first hot spot and the second hot spot are inevitable
It is overlapped, can judge whether self-calibrating device assembles rationally in this way.If the first hot spot and the second hot spot are not overlapped,
It then needs to be adjusted each structure member.For before being adjusted lens group, carrying out exchanging engagement positions progress
Self calibration, while air agitation is excluded, to promote Adjustment precision.
On the basis of the above embodiments, first mirror assembly 5 can be prism of corner cube or plane mirror.Institute
Stating the second mirror assembly 1 can be pentaprism, right-angle prism or plane mirror, as shown in figure 3, the second mirror assembly 1
For pentaprism, the light that point light source 100 issues passes through cross-graduation plate 101, then flat through being formed after lens group 102 to be detected
Row light and the second mirror assembly of directive 1, the second mirror assembly 1 is for directional light to be turn 90 degrees partially.As shown in figure 4, second
Mirror assembly 1 is plane mirror 11, and plane mirror 11 and main shaft optical path are in 45 degree of angles, and the incident angle of directional light is
45 degree.As shown in figure 5, the second mirror assembly 1 is right-angle prism 12, light is injected from the right-angle surface of right-angle prism 12, then from
Another right-angle surface projects, and incident angle of the directional light on inclined-plane is 45 degree.
Object lens 3 are the lens group of single object lens or multiple lens composition, and have unlimited-finite conjugate characteristic.
Lens group 102 to be detected can be the lens group or single object lens that multiple lens form, and with unlimited-limited
Conjugation or finite-infinite conjugate property.
Fig. 6 illustrates optical autocollimating principle and is formed through object lens flat after light is by being located at the graticle of focal plane of lens
Row light.Directional light is reflected by the reflecting mirror perpendicular to optical axis, then by forming graticle graticule after object lens on focal plane
As being overlapped with graticule.As soon as reflected light beam tilts 2 angles α when the mirror tilt minute angle angle α.
The embodiment of the present invention also provides a kind of method of adjustment for lens group adjustment, includes the following steps:
(1) using the adjustment device in any one of the above embodiment, by lens group setting to be adjusted in the second reflection
The light entrance port of mirror assembly is sequentially arranged point light source, cross-graduation plate, lens group and the second mirror assembly along optical path；
(2) magazine imaging is observed, when there are when two hot spots not being overlapped, adjust lens group with respect to optical path in imaging
Angle and longitudinal separation along optical path direction complete the self calibration of adjustment device until two hot spots in imaging are overlapped, say
Bright equipment at this time has excluded air agitation influence, can be used normally；
(3) self-alignment device and lens group to be adjusted will be completed and is placed on lens group base to be installed by original optical path order
On quasi- face, magazine imaging is observed, when there are when two hot spots not being overlapped, adjust angle of the lens group with respect to optical path in imaging
Degree completes lens group adjustment until two hot spots in imaging are overlapped.
The above content is specific embodiment is combined, further detailed description of the invention, and it cannot be said that this hair
Bright specific implementation is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made.
Claims (7)
1. a kind of adjustment device for lens group adjustment, it is characterised in that:
Including point light source, cross-graduation plate, the first mirror assembly, the second mirror assembly, third mirror assembly, first point
Light microscopic, object lens and camera；First mirror assembly, the first spectroscope, object lens and camera are located in main shaft optical path and suitable
Secondary setting, the camera are located at the focus of object lens；The point light source, cross-graduation plate and the second mirror assembly are along light incidence
Direction is sequentially arranged, and lens group to be adjusted is for being arranged between cross-graduation plate and the second mirror assembly, and cross point
For reticle plate in the focus of lens group to be adjusted, the second mirror assembly is used for the light of reflectance-transmittance lens group, through the second reflection
The light of mirror assembly reflection is along the first spectroscope of direction directive perpendicular to main shaft optical path；First spectroscope is used for anti-by second
The a part for penetrating the light of mirror assembly reflection is divided directive object lens, described in the light transmission that another part is reflected through the second mirror assembly
First spectroscope is to form transmitted light path；The third mirror assembly is located on the transmitted light path and is used to will transmit through described
First spectroscopical light reflexes to the first spectroscope along the direction for being parallel to transmitted light path, and the third mirror assembly includes using
In the datum level for placing lens group to be adjusted.
2. adjustment device according to claim 1, it is characterised in that:
First mirror assembly is prism of corner cube or plane mirror.
3. adjustment device according to claim 1, it is characterised in that:
Second mirror assembly is pentaprism, right-angle prism or plane mirror.
4. adjustment device according to claim 1, it is characterised in that:
The third mirror assembly further includes the second spectroscope and prism of corner cube, and second spectroscope and datum level are along transmission
Optical path is sequentially arranged, and the prism of corner cube is located on second spectroscopical light splitting optical path.
5. adjustment device according to claim 1-4, it is characterised in that:
The object lens 3 are the lens group of single object lens or multiple lens composition, and have unlimited-finite conjugate characteristic.
6. adjustment device according to claim 1-4, it is characterised in that:
The lens group to be detected forms either single object lens by multiple lens, and lens group to be detected have it is unlimited-
Finite conjugate or finite-infinite conjugate property.
7. a kind of method of adjustment for lens group adjustment, which comprises the steps of:
(1) adjustment device described in any one of claims 1-6 is used, lens group setting to be adjusted is reflected into microscope group second
The light entrance port of part is sequentially arranged point light source, cross-graduation plate, lens group and the second mirror assembly along optical path；
(2) magazine imaging is observed, when there are when two hot spots not being overlapped, adjust angle of the lens group with respect to optical path in imaging
It spends and/or completes the self calibration for adjusting device until two hot spots in imaging are overlapped along the longitudinal separation of optical path direction；
(3) self-alignment adjustment device will be completed and lens group to be adjusted is placed sequentially on datum level by original optical path direction,
Observe magazine imaging, when in imaging there are when two hot spots not being overlapped, adjustment lens group with respect to optical path angle, up to
Two hot spots in imaging are overlapped, and complete lens group adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811530316.6A CN109407335B (en) | 2018-12-14 | 2018-12-14 | Adjusting device and adjusting method for adjusting lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811530316.6A CN109407335B (en) | 2018-12-14 | 2018-12-14 | Adjusting device and adjusting method for adjusting lens group |
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| CN109407335A true CN109407335A (en) | 2019-03-01 |
| CN109407335B CN109407335B (en) | 2024-02-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975990A (en) * | 2019-05-09 | 2019-07-05 | 珠海博明视觉科技有限公司 | A kind of 4f system device for precision regulating and adjusting method |
| CN111230857A (en) * | 2019-03-05 | 2020-06-05 | 南昌工程学院 | Target positioning and grabbing based on machine vision and deep learning |
| CN113064286A (en) * | 2021-03-25 | 2021-07-02 | 中国科学院上海天文台 | K mirror detection device with help of pentagonal prism and installation and adjustment method thereof |
| CN114296251A (en) * | 2021-11-11 | 2022-04-08 | 中航洛阳光电技术有限公司 | Method for adjusting consistency of optical axes of multi-light-path lens |
| CN114326138A (en) * | 2022-01-05 | 2022-04-12 | 中国工程物理研究院激光聚变研究中心 | High-precision rotating table optical axis assembling and adjusting method |
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| US20160119612A1 (en) * | 2014-10-27 | 2016-04-28 | Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. | Method of and apparatus for optically determining positions and orientations of mirrors |
| CN205679898U (en) * | 2016-08-12 | 2016-11-09 | 深圳市佶达德科技有限公司 | The optical axis adjustable device of a kind of video camera and optical axis adjusting system |
| CN209198785U (en) * | 2018-12-14 | 2019-08-02 | 珠海博明视觉科技有限公司 | A kind of adjustment device for lens group adjustment |
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2018
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| JP2000193415A (en) * | 1998-12-28 | 2000-07-14 | Nikon Corp | Optical path length adjusting device and eccentricity measuring instrument using it |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230857A (en) * | 2019-03-05 | 2020-06-05 | 南昌工程学院 | Target positioning and grabbing based on machine vision and deep learning |
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| CN113064286A (en) * | 2021-03-25 | 2021-07-02 | 中国科学院上海天文台 | K mirror detection device with help of pentagonal prism and installation and adjustment method thereof |
| CN114296251A (en) * | 2021-11-11 | 2022-04-08 | 中航洛阳光电技术有限公司 | Method for adjusting consistency of optical axes of multi-light-path lens |
| CN114326138A (en) * | 2022-01-05 | 2022-04-12 | 中国工程物理研究院激光聚变研究中心 | High-precision rotating table optical axis assembling and adjusting method |
| CN114326138B (en) * | 2022-01-05 | 2023-06-13 | 中国工程物理研究院激光聚变研究中心 | Optical axis adjustment method for high-precision rotary table |
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