CN208350332U - For aiming at the block prism light calibration device of monitoring telescope optic axis - Google Patents
For aiming at the block prism light calibration device of monitoring telescope optic axis Download PDFInfo
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- CN208350332U CN208350332U CN201820901568.4U CN201820901568U CN208350332U CN 208350332 U CN208350332 U CN 208350332U CN 201820901568 U CN201820901568 U CN 201820901568U CN 208350332 U CN208350332 U CN 208350332U
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Abstract
This patent discloses a kind of for aiming at the block prism light calibration device of monitoring telescope optic axis.Block prism light calibration device turns back two beam laser beams into 180 degree angle using a block prism method, realizes the initial adjusting of telescopic optical system optical axis Yu reference standard plane mirror normal parallel；The parallel relation for using two pieces of parallel flats again, solves the high-precision fine adjustment of telescope optic axis Yu reference planes mirror normal parallel.This patent has captured the problem that the drift of telescope adjustment process optical axis causes image quality to change, and realizes the real-time high-precision monitoring of tested system mode, light channel structure is simple, and coarse adjustment is combined with accurate adjustment, substantially increases light school efficiency.Using light calibration device described in this patent, be not only applicable in telescopic optical system optical axis and standard flat mirror normal be registrated and real-time monitoring, apply also for demarcating other light schools fields such as the angle of the angle of two pieces of opposite mirror surfaces, two blocks of optical flats.
Description
Technical field
This patent is related to receiving and dispatching coaxial registration in telescopic optical system adjustment and machine system performance test, especially
During autocollimator adjustment, telescopic optical system optical axis is registrated and prison in real time with standard flat mirror normal
It surveys.Apply also for demarcating other light school fields such as the angle of two pieces of opposite mirror surfaces, the angle of two blocks of optical flats.
Background technique
The space reflections formula space camera optical system load such as laser-measured height rangefinder, laser radar is directed toward optical axis
It is required that it is higher and higher, necessarily cause optical system during light school, it is higher and higher with alignment request for optical axis.Space camera carries
Lotus is during autocollimatic direct light school, through, as reference, system optical axis and standard being put down frequently with heavy caliber standard flat mirror
Face mirror normal is demarcated as in parallel.Traditional scaling method is using theodolite or total station.Firstly, being adjusted to system optical axis
In parallel；Then, by theodolite optical axis rotation 180 degree, plane mirror is adjusted, so that its normal is parallel with theodolite optical axis.It builds in this way
Vertical benchmark will introduce a variety of errors, and the fixed error of theodolite adjusts the error of zero of theodolite level, and rotation theodolite draws
The rotation error etc. entered, process is cumbersome, and repeatable accuracy is not high, it is difficult to realize the real-time monitoring of light school process optical axis.
Therefore, during light school, the depth of parallelism of system optical axis benchmark Yu standard flat mirror normal how is improved, is mentioned
The repeatable accuracy of both high registration, realizes real-time monitoring, is optical alignment field problem to be solved.
Summary of the invention
The purpose of this patent is to provide during a kind of telescopic optical system light school, system optical axis and test reference
Standard flat mirror normal registration and real-time monitoring fill-in light calibration device.This block prism light calibration device is as shown in Fig. 1,
Left side is telescopic optical system, and right side is patent device, auxiliary test unit photoelectric auto-collimator 8, test reference plane
Mirror, the interferometer of light school autocollimating measurement.
This block prism light calibration device is divided into two parts: first part, coarse adjustment part.No.1 laser diode 1 and No. two
Laser diode 2 is emitted on the face A and B of block prism 7 by No.1 collimation lens 3 and No. two collimation lenses 4 respectively, is transmitted
No.1 parallel flat 5 and No. two parallel flats 6 form the incorgruous two beam laser close to 180 degree, arrive separately at optics of telescope
In the optical axis reference mirror of system and on test reference plane mirror, the angle of patent device is adjusted, optical system reference mirror is made
Laser beam backtracking to 1 exit portal of No.1 laser diode, then the standard flat mirror of reference is adjusted, so that the road laser
No. two 2 exit portals of laser diode of light beam backtracking；Second part, accurate measurement part.Subtest equipment photoelectric auto-collimator
8, emergent light is incident on the face D and C of block prism 7 simultaneously, transmitted through No.1 parallel flat 5 and No. two parallel flats after reflection
6, two beam directional lights of 180 degree are formed, the optical axis reference mirror and test reference plane mirror of telescopic optical system is arrived separately at, returns
It is moved back into photoelectric auto-collimator 8, accurate adjustment this block prism light calibration device and standard flat mirror, so that three in photoelectric auto-collimator 8
A crosshair is overlapped, that is, completes being registrated for system optical axis and standard flat mirror normal.
This block prism light calibration device carries out standard flat mirror normal and telescope during autocollimator adjustment
The registration and real-time detection of system optical axis, comprise the steps of:
1, the self-test of patent device.
First, the self-test of coarse adjustment part.No.1 laser diode 1 and No. two laser diodes 2 are opened respectively, observation warp
Cross the face block prism A and B be reflected into No.1 parallel flat 5 and No. two parallel flats 6 laser can backtracking to exit portal.
Second, the self-test of accurate measurement part.By the photoelectric auto-collimator 8 of subtest, it is directed at the face C and D of block prism 7, is reflected into one
Number parallel flat 5 and No. two parallel flats 6, return again to and come photoelectric auto-collimator 8, and whether the crosshair that two-way returns weighs
It closes.It is overlapped, i.e. Plant in good condition, follow-up test can be carried out.
2, the benchmark optical axis of optical system is registrated with reference planes mirror normal coarse adjustment.
As shown in Fig. 1, this block prism light calibration device is placed in the reference planes of telescope light system Yu adjustment
Between mirror, the position of the 8 face block prism 7 of photoelectric auto-collimator of subtest.No.1 laser diode 1 is opened, adjustment is originally
The angle of block prism light calibration device, the laser beam by No.1 collimation lens 3 for issuing No.1 laser diode 1 pass through
The face A of block prism 7 is reflected, and No.1 parallel flat 5 is transmitted, after reaching the reflection of telescope optic axis reference mirror, backtracking to one
The exit portal of number laser diode 1.No. two laser diodes 2 are opened, by the laser beam of No. two collimation lenses 4, by vertical
The face B of square glass prism 7 is reflected, and through No. two parallel flats 6, is reached adjustment reference planes mirror, is adjusted the angle of reference planes mirror,
So that exit portal of this road laser beam backtracking to No. two laser diodes 2, i.e., the benchmark optical axis of completion optical system with
The coarse adjustment rapid registering of reference planes mirror normal.
3, the benchmark optical axis of optical system is registrated with reference planes mirror normal accurate measurement.
No.1 laser diode 1 and No. two laser diodes 2 are closed, photoelectric auto-collimator 8 is opened, adjust autocollimator 8,
So that crosshair S1 and telescopic optical system optical axis reference mirror that patent device itself returns return to the crosshair of coming
S2 is appeared in simultaneously in the visual field of photoelectric auto-collimator 8, finely tunes this block prism light calibration device and the two is overlapped.It checks at this time
Reference planes mirror return crosshair S3 position, adjust reference planes mirror angle, the crosshair S3 returned it to
The first two crosshair S1, S2 are overlapped, and as schemed shown in (1) in attached drawing 2, three crosshairs are completely coincident, i.e. completion telescope
Fine being registrated of the benchmark optical axis of optical system and reference planes mirror normal.
4, the real-time monitoring of the benchmark optical axis of optical system and reference planes mirror normal parallel degree.
This patent equipment overall volume is smaller, between telescopic optical system and reference planes mirror, does not influence the survey of light school
Examination, therefore can be with the depth of parallelism of real-time monitoring system optical axis and standard flat mirror normal.In addition, this block prism light calibration device has
The characteristic of anti-vibration, when this block prism light calibration device has an Orientation differences of low-angle, and optical system reference mirror and with reference to flat
When the orientation of face mirror does not change, the crosshair for crosshair S2 and reference planes the mirror return that telescopic optical system returns
S3 is still coincidence in vertical direction, in the horizontal direction relative to the reference cross cross hair S1 of this block prism light calibration device itself
It is symmetrically, the depth of parallelism of telescopic optical system benchmark optical axis Yu reference planes mirror normal can still to be monitored, as schemed in attached drawing 2
(2).When the orientation of optical system reference mirror and reference planes mirror changes, telescopic optical system optical axis reference mirror is returned
The crosshair S3 that is returned with reference planes mirror of crosshair S2 separated in vertical direction, in the horizontal direction relative to this cube
The reference cross cross hair S1 of prismatic light calibration device itself is asymmetric, and as schemed (3) in attached drawing 2, the deviation of the two can also be in light
It is directly calculated on electric autocollimator 8, has reached the benchmark optical axis and reference planes mirror normal parallel of telescopic optical system
Spend the purpose of real-time monitoring.
The characteristics of this patent is mainly reflected in the following aspects: (1) structure is simply small and exquisite, is easy to build, and in addition has thick
It adjusts and is easy to test with accurate adjustment function, high efficiency；(2) the standard flat mirror normal of system optical axis and test reference can be met
The dress school of collimation also can satisfy system optical axis and test standard flat mirror normal into the dress school of specified angle and survey
Examination；(3) tested state can be monitored in real time, at the same the state of device itself can also real-time detection, in monitoring process,
Equipment slight vibration caused by extraneous factor does not influence test, and Ability of Resisting Disturbance is strong.In addition, this patent can not only assist
Adjustment axis reflector formula telescope, and more demanding optical system is directed toward optical axis for off-axis reflection telescope etc.
Adjustment is equally applicable.
Detailed description of the invention
Fig. 1 is the schematic diagram that patent device is used for light school；
Fig. 2 is photoelectric auto under three kinds of patent device, system optical axis reference mirror and reference planes mirror different conditions
Straight instrument shows the schematic diagram of result, wherein (1) is system optical axis and reference planes mirror on time, photoelectric auto-collimator is aobvious
Show result schematic diagram；(2) be patent device have low-angle it is mobile when, photoelectric auto-collimator shows result schematic diagram；It (3) is light
When systematic optical axis and reference planes mirror normal angle change, photoelectric auto-collimator shows result schematic diagram；
Fig. 3 is the schematic diagram of patent device itself light school step.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to this patent method.
Main components used in this patent are illustrated:
No. two laser diodes 2: No.1 laser diode 1 uses ThorLab company model for the laser two of HL6312G
Pole pipe, wavelength 635nm, power 5mw, diameter 5.6mm, A type pin.
No. two collimation lenses 4: No.1 collimation lens 3 uses ThorLab company model for the collimation lens of A230, bore
6.34mm, focal length 4.51mm, central wavelength 780nm, material S-NPH1.
No.1 parallel flat 5, No. two parallel flats 6: customization processing, bore 50mm, the two sides depth of parallelism are better than 3 seconds, transmission
Wavefront RMS is better than 1/15 wavelength, material K9.
Block prism 7: customization processing, side length 35mm, an angle of 90 degrees difference and tower difference are superior to 3 seconds, and each face face type RMS is better than
Aluminium mirror coating, material K9 are plated in 1/15 wavelength, five faces.
Photoelectric auto-collimator 8:TriAngle company model be TA500-57 photoelectric auto-collimator, clear aperture 50mm, depending on
Rink corner degree 1300X950 seconds, resolution ratio 0.02 second, repeatable accuracy ± 0.05 second, precision ± 0.4 second.
Specific step is as follows in the dress school of patent device itself:
1) No. two parallel flats 6 are fixed, No. two parallel flats 6 is directed at using photoelectric auto-collimator 8, adjusts photoelectric auto-collimation
Instrument 8 makes return crosshair placed in the middle.No.1 parallel flat 5 is installed again, adjusts its orientation, so that returning to crosshair and No. two
The crosshair that parallel flat 6 returns is overlapped, fixed No.1 parallel flat 5, as shown in step 1 in attached drawing 3.
2) block prism 7 is added on the basis of step 1, and is aligned with photoelectric auto-collimator 8, such as 3 step 2 institute of attached drawing
Show.It is returned in image in photoelectric auto-collimator it can be seen that two crosshairs, vertical direction is overlapped, and horizontal direction does not weigh
It closes, the angle (rotating around y-axis) of block prism 7 is adjusted, so that two crosshairs are completely coincident.
3) interval for adjusting No.1 laser diode 1 and No.1 collimation lens 3 is looked into distance (being greater than 10 meters) remote enough
See luminous point, minimum, same method adjusts the interval of No. two laser diodes 2 and No. two collimation lenses 4, by laser diode
It is fixed with collimation lens relative position, forms two laser modules.Then the angle of two-laser module is adjusted separately, so that
The laser beam being incident on reference planes mirror can reflect back into laser, and the two relative positional relationship is kept to fix, such as attached
In Fig. 3 shown in step 3
4) regulate in step 3 two laser modules are installed on the device that step 2 regulates, in attached drawing 3
Shown in step 4, the angle of laser is adjusted, so that laser beam passes through block prism, parallel flat returns to the laser beam come and can return
To laser.
Claims (5)
1. a kind of for aiming at the block prism light calibration device of monitoring telescope optic axis, including No.1 laser diode (1), No. two
Laser diode (2), No.1 collimation lens (3), No. two collimation lenses (4), No.1 parallel flat (5), No. two parallel flats
(6), block prism (7), auxiliary device photoelectric auto-collimator (8), it is characterised in that:
The block prism light calibration device is located among telescope test device optical path, and left side is with the anti-of optical axis reference mirror
Formula or transmission-type telescope are penetrated, right side is reference planes mirror, is located at No.1 collimation lens (3) and No. two collimation lenses (4)
The No.1 laser diode (1) of position of focal plane and No. two laser diodes (2) are emitted collimation laser to the A and B of block prism (7)
On face, No.1 parallel flat (5) and No. two parallel flats (6) are transmitted, the incorgruous two beam laser close to 180 degree are formed, respectively
It reaches in the optical axis reference mirror of telescopic optical system on test reference plane mirror, adjusts the angle of the present apparatus, make optics
The laser beam backtracking of the optical axis reference mirror of system is to a number laser diode (1) exit portal, then adjusts test reference plane
Mirror, so that being incident to No. two laser diode (2) exit portals of backtracking after the laser beam reflection of reference planes mirror；Auxiliary is surveyed
It tries equipment photoelectric auto-collimator (8) and is emitted crosshair laser, while being incident on the face D and C of block prism (7), after reflection
It is parallel better than 3 seconds No.1 parallel flats (5) and No. two parallel flats (6), two beams for forming 180 degree transmitted through the depth of parallelism respectively
Light arrives separately at the optical axis reference mirror and test reference plane mirror of telescopic optical system, backs into photoelectric auto-collimator
(8), the present apparatus and test reference plane mirror are adjusted, so that in photoelectric auto-collimator (8), telescopic optical system optical axis reference mirror
The crosshair of coming is returned to, test reference plane mirror returns to the crosshair of coming, the cross of this block prism light calibration device itself
Cross hair, three crosshairs are overlapped, that is, complete system optical axis and standard flat mirror normal be registrated and monitoring.
2. according to claim 1 a kind of for aiming at the block prism light calibration device of monitoring telescope optic axis, feature
Be: the No.1 parallel flat (5) and No. two parallel flats (6) is transmission quartz material, and the depth of parallelism on front and back two sides is excellent
In 3 seconds, transmission wavefront RMS value was better than 1/15 wavelength, surface not plated film, medium wavelength 633nm.
3. according to claim 1 a kind of for aiming at the block prism light calibration device of monitoring telescope optic axis, feature
Be: the block prism (7) is quartz material prism, and vertical angular difference and tower difference are superior to 3 seconds, and six face type RMS are better than
Aluminium mirror coating is plated in 1/15 wavelength, six faces, and reflectivity is greater than 90%, medium wavelength 633nm.
4. a kind of block prism light calibration device for aiming at monitoring telescope optic axis in real time according to claim 1, feature
Be: the No.1 laser diode (1) and No. two laser diodes (2) is visible laser diode.
5. a kind of block prism light calibration device for aiming at monitoring telescope optic axis in real time according to claim 1, feature
Be: the No.1 collimation lens (3) and No. two collimation lenses (4) is transmission quartz lens.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820901568.4U CN208350332U (en) | 2018-06-12 | 2018-06-12 | For aiming at the block prism light calibration device of monitoring telescope optic axis |
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| CN201820901568.4U CN208350332U (en) | 2018-06-12 | 2018-06-12 | For aiming at the block prism light calibration device of monitoring telescope optic axis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029925A (en) * | 2018-06-12 | 2018-12-18 | 中国科学院上海技术物理研究所 | It is a kind of for aim at monitoring telescope optic axis block prism light calibration device |
| US20230400297A1 (en) * | 2022-05-20 | 2023-12-14 | Asmpt Singapore Pte. Ltd. | Passive alignment of lens module relative to an image sensor for manufacturing a camera module |
-
2018
- 2018-06-12 CN CN201820901568.4U patent/CN208350332U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029925A (en) * | 2018-06-12 | 2018-12-18 | 中国科学院上海技术物理研究所 | It is a kind of for aim at monitoring telescope optic axis block prism light calibration device |
| CN109029925B (en) * | 2018-06-12 | 2023-12-26 | 中国科学院上海技术物理研究所 | Cubic prism optical correction device for sighting and monitoring telescope optical axis |
| US20230400297A1 (en) * | 2022-05-20 | 2023-12-14 | Asmpt Singapore Pte. Ltd. | Passive alignment of lens module relative to an image sensor for manufacturing a camera module |
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