CN207540510U - A kind of device for being used to detect lens centre deviation - Google Patents
A kind of device for being used to detect lens centre deviation Download PDFInfo
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- CN207540510U CN207540510U CN201721753843.4U CN201721753843U CN207540510U CN 207540510 U CN207540510 U CN 207540510U CN 201721753843 U CN201721753843 U CN 201721753843U CN 207540510 U CN207540510 U CN 207540510U
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- measured
- spectroscope
- light source
- laser light
- microscope group
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Abstract
The utility model is related to a kind of for detecting the device of lens centre deviation, it is characterized by comprising for emitting the laser light source of the collimated laser beam of specific wavelength, the light splitting microscope group of the laser light source specific wavelength light beam can only be reflected, for putting the platform to be measured of lens face to be measured, cross hairs target and with laser light source, the corresponding imaging unit with imaging len and imaging sensor of light splitting microscope group；The light splitting microscope group is made of the first spectroscope and the second spectroscope；After the collimated laser beam of the laser light source transmitting specific wavelength to its corresponding light splitting microscope group, first spectroscope of the light splitting microscope group reflects away the light beam of the wavelength, the light beam is entered through the second spectroscope in the lens face to be measured of platform to be measured later, and be reflected on the second spectroscope by the lens face to be measured, finally the light beam is reflected into imaging unit by the second spectroscope.The device can be used for synchronous lens system of the detection with multiple faces, largely improve the efficiency of detection.
Description
Technical field
The utility model belongs to the lens centre deviation detection field in optics, is specifically related to one kind for detecting lens
The device of center deviation.
Background technology
Lens are in manufacture and assembling process, when deviation has occurred with systematic optical axis in lens axis, inevitable real estate
Raw centre deviation phenomenon.The presence of center deviation can influence the imaging effect of lens system.The thus manufacture in lens and group
It needs to carry out the detection of center deviation to it during dress.
At present generally using the monochromatic light road measuring method under the OptiCentric series of TRIOPTIC companies, but can only use
In measuring simple lens, if the accuracy of measuring surface can be by the shadow of preceding measuring surface accuracy of measurement after when measuring poly-lens system
It rings, causes the cumulative effect of error.In addition, for poly-lens system, it is impossible to while detect the eccentric and saturating of multiple lens
The bias of microscope group entirety then requires a great deal of time to carry out misalignment measurement to each face of lens each in system.
Utility model content
The utility model in view of the deficiencies of the prior art, provides a kind of device for being used to detect lens centre deviation.The dress
Synchronous lens system of the detection with multiple faces can be used for by putting, and largely improve the efficiency of detection.
In order to achieve the above object, the utility model is a kind of for detecting the device of lens centre deviation, main to include using
In the laser light source of the collimated laser beam of transmitting specific wavelength, the spectroscope of the laser light source specific wavelength light beam can only be reflected
Group, for putting the platform to be measured of lens face to be measured, cross hairs target and corresponding with the laser light source, light splitting microscope group
The imaging unit with imaging len and imaging sensor；The light splitting microscope group is by the first spectroscope and the second spectroscope structure
Into；The collimated laser beam of laser light source transmitting specific wavelength to its it is corresponding be divided microscope group after, the of the light splitting microscope group
One spectroscope reflects away the light beam of the wavelength, and the light beam enters the to be measured of platform to be measured through the second spectroscope later
It in lens face, and is reflected on the second spectroscope by the lens face to be measured, finally the light beam is reflected into imaging by the second spectroscope
Unit.
Preferably, rotating device is installed on the platform to be measured, to rotate the lens face to be measured on platform to be measured.
Preferably, the cross hairs target is integrated with laser light source.
Another kind as said program improves, and the cross hairs target can also be set to the outside of laser light source.
Preferably, the light beam of the laser light source enters in the light path before platform to be measured and is installed with relay lens, to reduce
Entire the distance between measuring device and lens to be measured, so as to reduce the height of entire measuring device.
Preferably, when the laser light source quantity is more than one, the optical maser wavelength of each laser light source transmitting differs；
The light splitting microscope group only has the light beam of corresponding optical maser wavelength a light splitting effect, and to the laser beams of other wavelength only
There is transmission effect.
After the collimated laser beam of the laser light source transmitting specific wavelength to its corresponding light splitting microscope group, the light splitting microscope group
The first spectroscope the light beam of the wavelength is reflected away, the light beam enters platform to be measured through the second spectroscope later
It in lens face to be measured, and is reflected on the second spectroscope by the lens face to be measured, finally the light beam is reflected by the second spectroscope
Imaging unit.
The cross hairs picture that clearly lens face to be measured is reflected back can be above obtained when imaging unit is in suitably distance, then
Platform to be measured is rotated to rotate lens face to be measured by rotating device, multiple cross hairs pictures can be obtained in this way, will be obtained later
The centers of multiple cross hairs pictures be fitted, the circle fitted is the result of eccentricity detecting.
The utility model can be used for synchronous lens system of the detection with multiple faces, largely improve inspection
The efficiency of survey.The device is widely used, highly practical, use easy to spread.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Wherein, 11,12,1N is laser light source, 211,221,2N1 be the first spectroscope, 212,222,2N2 be the second light splitting
Mirror, 31,32,3N be imaging unit, 4 be relay lens, and 5 be lens face to be measured.
Specific embodiment
The utility model is described in detail, but not as to the utility model below in conjunction with the drawings and specific embodiments
Restriction.
With reference to Fig. 1, the utility model embodiment is a kind of for detecting the device of lens centre deviation, main to include sending out
The laser light source 11, laser light source 12, laser light source 1N of the collimated laser beam of different wave length are penetrated, the laser light source can only be reflected
The light splitting microscope group of corresponding wavelength light beam, for putting the platform to be measured of lens face to be measured, the cross hairs outside laser light source
Target and with the laser light source, the corresponding imaging unit 31 with imaging len and imaging sensor of light splitting microscope group,
Imaging unit 32, imaging unit 3N；Described image sensor can be that CCD can also be CMOS；The light splitting microscope group is by first
Spectroscope and the second spectroscope are formed.Corresponding first spectroscope 211, the second spectroscope 212 are that laser light source 11 and imaging are single
Member 31, it is laser light source 12 and imaging unit 32 that the first spectroscope 221, the second spectroscope 222 be corresponding, the first spectroscope 2N1,
Second spectroscope 2N2 corresponding is laser light source 1N and imaging unit 3N.
With reference to Fig. 1, rotating device is installed on the platform to be measured, to rotate the lens face to be measured 5 on platform to be measured.Institute
It states and relay lens 4 is installed in the light path between the second spectroscope and platform to be measured, to reduce entire measuring device and lens to be measured
The distance between, so as to reduce the height of entire measuring device.
With reference to Fig. 1, the utility model embodiment sets the laser light source identical with lens face quantity to be measured, the first light splitting
Mirror, the second spectroscope and imaging unit.When synchronizing measurement problem to be solved be in common optical pathways each light it
Between interference problem.Light splitting microscope group of the present embodiment by the way that different laser light source launch wavelengths is configured and with specific function
To solve the problems, such as this.Here the wavelength that each laser light source is emitted differs, the first spectroscope in addition and
Two spectroscopes only have corresponding optical maser wavelength light beam light splitting effect, and the laser beam of other wavelength is only transmitted
Effect.This point can realize this function by optical coating, it is possible thereby to eliminate the interference problem between respective light source.
In order to make it easy to understand, following only illustrate the light path of laser light source 11.With reference to Fig. 1, the laser light source 11
Emit the collimated laser beam of specific wavelength to the first spectroscope 211, the first spectroscope 211 reflects the light beam of the wavelength
It goes, the light beam is through the first spectroscope 221, the first spectroscope 2N1, the second spectroscope 212, the second spectroscope 222 and second point
Relay lens 4 is entered after light microscopic 2N2, the light beam enters in the lens face to be measured 5 of platform to be measured and to be measured by this later
Minute surface 5 is reflected on the second spectroscope 212, and finally the light beam is reflected by the second spectroscope 212 in imaging unit 31.
The cross hairs picture that clearly lens face 5 to be measured is reflected back can be above obtained when imaging unit 31 is in suitable distance,
Platform to be measured is then rotated by rotating device to rotate lens face 5 to be measured, multiple cross hairs pictures can be obtained in this way, later will
The center of the multiple cross hairs pictures obtained is fitted, and the circle fitted is the result of eccentricity detecting.Rotation described here
Device is current known technology, controls the shifting of velocity of rotation and measurement head generally by stepper motor and controller at present
It moves, and pass through full-automatic computer control to allow to drive to focal position unlimited focal length and radius.
Illustratively, each imaging unit imaging should be corresponding with lens face to be measured each in lens system.
Under most of situations can not in each lens face to be measured by plated film to reach the function identical with being divided microscope group, in fact, by
It is different in the radius of curvature of each lens face to be measured and position, thus imaging also should be on different positions.This
Setting needs to know the radius of curvature of the numerical value of focal length and sample, otherwise cannot calculate centre deviation.Therefore prior basis is answered
The radius of curvature of each lens face to be measured and position calculate the image distance of imaging, then set each imaging unit respectively right
In the image distance answered, cross hairs picture formed by each lens face to be measured is found by finely tuning.
The present apparatus can be used for synchronous lens system of the detection with multiple faces, largely improve detection
Efficiency.The structure is widely used, highly practical, use easy to spread.
The utility model is made one above to be described in detail, but it will be apparent that those skilled in the art can carry out respectively
Kind changes and improvements, the scope of the utility model limited without departing from the appended claims.
Claims (6)
1. a kind of device for being used to detect lens centre deviation, it is characterised in that：The main standard included for emitting specific wavelength
The laser light source of straight laser beam, can only reflect the light splitting microscope group of the laser light source specific wavelength light beam, to be measured for putting
The platform to be measured of minute surface, cross hairs target and with the laser light source, light splitting microscope group it is corresponding have imaging len and figure
As the imaging unit of sensor；The light splitting microscope group is made of the first spectroscope and the second spectroscope；The laser light source transmitting
After the collimated laser beam of specific wavelength to its corresponding light splitting microscope group, the first spectroscope of the light splitting microscope group is the light of the wavelength
Beam reflects away, and the light beam is entered in the lens face to be measured of platform to be measured, and to be measured by this through the second spectroscope later
Lens face is reflected on the second spectroscope, and finally the light beam is reflected into imaging unit by the second spectroscope.
2. a kind of device for being used to detect lens centre deviation according to claim 1, it is characterised in that：It is described to be measured flat
Rotating device is installed on platform.
3. a kind of device for being used to detect lens centre deviation according to claim 1, it is characterised in that：The cross hairs
Target is set to the outside of laser light source.
4. a kind of device for being used to detect lens centre deviation according to claim 1, it is characterised in that：The cross hairs
Target is integrated with laser light source.
5. a kind of device for being used to detect lens centre deviation according to claim 1, it is characterised in that：The laser light
The light beam in source enters in the light path before platform to be measured and is installed with relay lens.
6. a kind of device for being used to detect lens centre deviation according to claim 1, it is characterised in that：The laser light
When source quantity is more than one, the optical maser wavelength of each laser light source transmitting differs；The light splitting microscope group is only in contrast
The light beam for the optical maser wavelength answered has light splitting effect, and only has transmission effect to the laser beam of other wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721753843.4U CN207540510U (en) | 2017-12-13 | 2017-12-13 | A kind of device for being used to detect lens centre deviation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721753843.4U CN207540510U (en) | 2017-12-13 | 2017-12-13 | A kind of device for being used to detect lens centre deviation |
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| Publication Number | Publication Date |
|---|---|
| CN207540510U true CN207540510U (en) | 2018-06-26 |
Family
ID=62618622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721753843.4U Expired - Fee Related CN207540510U (en) | 2017-12-13 | 2017-12-13 | A kind of device for being used to detect lens centre deviation |
Country Status (1)
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| CN (1) | CN207540510U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830823A (en) * | 2017-12-13 | 2018-03-23 | 广东技术师范学院 | A kind of device for being used to detect lens centre deviation |
| CN109580179A (en) * | 2018-11-22 | 2019-04-05 | 中国科学院苏州生物医学工程技术研究所 | Non-spherical lens Accentric detector and its detection method based on wave front technology |
| CN109883361A (en) * | 2019-02-23 | 2019-06-14 | 西安昂科光电有限公司 | A method of realizing that optical module centre deviation is tested using high-precision guide rail |
-
2017
- 2017-12-13 CN CN201721753843.4U patent/CN207540510U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830823A (en) * | 2017-12-13 | 2018-03-23 | 广东技术师范学院 | A kind of device for being used to detect lens centre deviation |
| CN109580179A (en) * | 2018-11-22 | 2019-04-05 | 中国科学院苏州生物医学工程技术研究所 | Non-spherical lens Accentric detector and its detection method based on wave front technology |
| US11506567B2 (en) | 2018-11-22 | 2022-11-22 | Suzhou Institute Of Biomedical Engineering And Technology, Chinese Academy Of Sciences | Aspheric lens eccentricity detecting device based on wavefront technology and detecting method thereof |
| CN109883361A (en) * | 2019-02-23 | 2019-06-14 | 西安昂科光电有限公司 | A method of realizing that optical module centre deviation is tested using high-precision guide rail |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180626 Termination date: 20191213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |