CN209198785U - A kind of adjustment device for lens group adjustment - Google Patents
A kind of adjustment device for lens group adjustment Download PDFInfo
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- CN209198785U CN209198785U CN201822109184.1U CN201822109184U CN209198785U CN 209198785 U CN209198785 U CN 209198785U CN 201822109184 U CN201822109184 U CN 201822109184U CN 209198785 U CN209198785 U CN 209198785U
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- mirror assembly
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- spectroscope
- lens group
- lens
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Abstract
A kind of adjustment device for lens group adjustment, which includes 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 of the utility model adjustment lens group is simple, quickly and is more convenient for making evaluation to adjustment result.
Description
Technical field
The utility model relates to vision-based detection and radiographic measurement technical field, especially a kind of tune for lens group adjustment
Engagement positions.
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.
Utility model content
The utility model provides a kind of adjustment device for lens group adjustment, and adjustment mode is simple, quickly and is more convenient for
Evaluation is made to adjustment result.
The utility model provides a kind of adjustment device for lens group adjustment, including point light source, cross-graduation plate, first
Mirror assembly, the second mirror assembly, third mirror assembly, the first spectroscope, object lens and camera；First reflection
Mirror assembly, the first spectroscope, object lens and camera are located in main shaft optical path and are sequentially arranged, and the camera is located at the focus of object lens；
The point light source, cross-graduation plate and the second mirror assembly are sequentially arranged along light incident direction, and lens group to be adjusted is used
In setting between cross-graduation plate and the second mirror assembly, and cross-graduation plate is located in the focus of lens group to be adjusted,
Second mirror assembly is used for the light of reflectance-transmittance lens group, and the light through the reflection of the second mirror assembly is along perpendicular to main shaft optical path
The first spectroscope of direction directive；First spectroscope is used to penetrate a part light splitting for the light that the second mirror assembly reflects
To object lens, the light that another part is reflected through the second mirror assembly is through first spectroscope to form transmitted light path；It is described
Third mirror assembly is located on the transmitted light path and is parallel to transmitted light for will transmit through described first spectroscopical light edge
The direction on road reflexes to the first spectroscope, and the third mirror assembly includes the datum level for placing lens group to be adjusted.
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.
The utility model is based on optical autocollimating principle, it is only necessary to adjust front and back and deflection 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 it is logical
It crosses two hot spots of observation whether to be overlapped to determine whether complete the adjustment to lens, more to the evaluation of lens group result adjusted
Add intuitive.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the adjustment device for lens group adjustment of embodiment of the utility model；
Fig. 2 is a kind of self calibration optical path signal of the adjustment device for lens group adjustment of embodiment of the utility model
Figure；
Fig. 3 is a kind of adjustment light path schematic diagram of the adjustment device for lens group adjustment of embodiment of the utility model；
Fig. 4 is the structural schematic diagram of the adjustment device for lens group adjustment of the utility model another kind embodiment；
Fig. 5 is the structural schematic diagram of the adjustment device for lens group adjustment of another embodiment of the utility model；
Fig. 6 is optical autocollimating schematic diagram.
Specific embodiment
The utility model is so-called " equal " or " identical " refers to the equal or phase in view of reasonable error
Together, equal or identical rather than in absolute sense.Light irradiating angle, reflection angle or refraction determined by the utility model
Angle is to consider that presence is centainly lost light in the medium and there are made when reasonable error.Lead to below
Specific embodiment combination attached drawing is crossed to be described in further detail the utility model.
The utility model embodiment 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, and can have opposite light incident direction is in 45 degree of angles
Some light is turn 90 degrees light splitting partially and projected by light splitting surface, and another part light then penetrates the first spectroscope 2.First reflecting mirror
Component 5, the first spectroscope 2, object lens 3 and camera 7 are sequentially arranged in main shaft optical path, and are coaxially disposed.First reflection microscope group
Light is reflexed to the first spectroscope 2 by part 5, and the camera 7 is then located at the focal position of object lens 3, will gather by the light of object lens 3
On the camera lens for collecting camera 7, camera 7 shoots the imaging of light.Second mirror assembly 1 is located at the incidence of light
In optical path, cross-graduation plate 101 is close to point light source 100 and is placed, and lens group 102 to be detected is for being placed on the second reflection microscope group
The entrance port of part 1, adjusting cross-graduation plate 101 and point light source 100 makes cross-graduation plate be located exactly at lens group 102 to be detected
Focal point, the light for being emitted point light source 100 form directional light after lens group 102 to be detected.Second mirror assembly 1
For reflected parallel light, the light through the reflection of the second mirror assembly 1 is along the first spectroscope of direction directive perpendicular to main shaft optical path
2.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
Light through the reflection of the second mirror assembly 1 is through first spectroscope 2 to form transmitted light path.The third mirror assembly
Light on the transmitted light path and for will transmit through first spectroscope 2 is reflexed to along the direction for being parallel to transmitted light path
First 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 utility model embodiment 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 combine specific embodiment further detailed description of the utility model, and it cannot be said that
The specific implementation of the utility model is only limited to these instructions.For the utility model person of an ordinary skill in the technical field
For, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made.
Claims (6)
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 adjusted forms either single object lens by multiple lens, and lens group to be adjusted is with unlimited-limited
Conjugation or finite-infinite conjugate property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109184.1U CN209198785U (en) | 2018-12-14 | 2018-12-14 | A kind of adjustment device for lens group adjustment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109184.1U CN209198785U (en) | 2018-12-14 | 2018-12-14 | A kind of adjustment device for lens group adjustment |
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| Publication Number | Publication Date |
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| CN209198785U true CN209198785U (en) | 2019-08-02 |
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| CN201822109184.1U Active CN209198785U (en) | 2018-12-14 | 2018-12-14 | A kind of adjustment device for lens group adjustment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407335A (en) * | 2018-12-14 | 2019-03-01 | 珠海博明视觉科技有限公司 | A kind of adjustment device and method of adjustment for lens group adjustment |
| 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 |
-
2018
- 2018-12-14 CN CN201822109184.1U patent/CN209198785U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407335A (en) * | 2018-12-14 | 2019-03-01 | 珠海博明视觉科技有限公司 | A kind of adjustment device and method of adjustment for lens group adjustment |
| CN109407335B (en) * | 2018-12-14 | 2024-02-13 | 珠海博明视觉科技有限公司 | Adjusting device and adjusting method for adjusting lens group |
| 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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