CN211626881U - Instrument for detecting free-form surface virtual image distance - Google Patents

Instrument for detecting free-form surface virtual image distance Download PDF

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Publication number
CN211626881U
CN211626881U CN202020593508.8U CN202020593508U CN211626881U CN 211626881 U CN211626881 U CN 211626881U CN 202020593508 U CN202020593508 U CN 202020593508U CN 211626881 U CN211626881 U CN 211626881U
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guide rail
free
form surface
virtual image
mounting base
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CN202020593508.8U
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Chinese (zh)
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廖文亮
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Suzhou Liangyu Optical Technology Co ltd
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Suzhou Liangyu Optical Technology Co ltd
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Abstract

The utility model belongs to the technical field of optical detection, a detecting instrument of free-form surface virtual image distance is disclosed, including objective table, level crossing, TFT image source, mute light location blank, scale ruler, the objective table is fixed with first guide rail and second guide rail from one end to the other end in proper order, the cross section of first guide rail and second guide rail is "worker" style of calligraphy guide rail, it is connected with mute light location blank to slide on the first guide rail, it is connected with TFT image source to slide on the second guide rail, the level crossing is located TFT image source keeps away from mute light location blank end, the level crossing can reciprocate along the installation department, can dismantle between TFT image source and the mute light location blank and install the free-form surface mirror, the free-form surface mirror is close to the objective table end and is equipped with the installed part, the installed part can reciprocate equally, the scale ruler is fixed in; the utility model discloses a simple easy preparation, equipment application scope is wide, is fit for various transparent or semi-reflection curved surface and carries out nondestructive test.

Description

Instrument for detecting free-form surface virtual image distance
Technical Field
The utility model belongs to the technical field of the optical detection, especially, relate to a detecting instrument of free-form surface virtual image distance.
Background
With the improvement of design methods and processing technologies, the application of free-form surfaces in vehicle-mounted HUDs (optical screens) is gradually increased, virtual image design and detection on the free-form surfaces are urgently needed in the research and development and production processes of products, the distance between the free-form surfaces and the virtual images is detected at present, and no special detection equipment is provided. The general use installation actual measurement brings a lot of inconvenience and puzzlement for research and development and production, and specific operation method is as follows: 1. assembling the curved mirror on a product; 2. the light emitted by the TFT image source is transmitted along the transmission direction of the light path, and an observer can see a reflected image on the curved surface; 3. and judging whether the virtual image design meets the requirements or not by comparing the size of the design with that of the actual image.
The prior art has the following disadvantages: by using the method, the measurement is not accurate enough, and the distance of the virtual image cannot be accurately reflected by the size of the visual imaging; the destructive processing detection can only carry out sampling detection, can not carry out full detection and can not meet the requirements of customers sometimes; meanwhile, the measurement repeatability is poor, the size of the image can be changed due to the position change of an observer, and the measurement error is increased.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a detecting instrument of free-form surface virtual image distance, convenient to carry, easy operation, the suitability is strong.
The utility model discloses a realize like this, a detecting instrument of free-form surface virtual image distance includes objective table, level crossing, TFT image source, mute light location blank, scale, the objective table is fixed with first guide rail and second guide rail from one end to the other end in proper order, and the cross section of first guide rail and second guide rail is "worker" style of calligraphy guide rail, slide on the first guide rail and be connected with mute light location blank slides on the second guide rail and is connected with the TFT image source, the level crossing is located the TFT image source is kept away from mute light location blank end, and the level crossing can be followed installation department and reciprocated, the TFT image source with demountable installation has the free-form surface mirror between the mute light location blank, and the free-form surface mirror is close to the objective table end is equipped with the installed part, and the installed part can be followed equally and reciprocated, the scale is fixed in the objective table side.
As the utility model relates to a preferred technical scheme of detecting instrument of free-form surface virtual image distance, the objective table is close to the level crossing end is fixed with the montant, slides on the montant and is connected with first sleeve pipe, montant end fixed connection to is kept away from to first sleeve pipe the level crossing.
As the utility model relates to a preferred technical scheme of detecting instrument of free-form surface virtual image distance, threaded connection hole has been seted up to first sleeve outer wall one side, and the inside threaded connection of threaded connection hole has first locking screw, first locking screw end of screwing in with the montant outer wall is contradicted.
Adopt above-mentioned scheme: the position accessible montant of level crossing reciprocate to remove the adjustment, and the first locking screw of position accessible of level crossing fixes a position, observes not co-altitude to the level crossing and carries out the formation of image and detect when being convenient for detect.
As the utility model relates to a preferred technical scheme of detecting instrument of free-form surface virtual image distance, it is connected with first installation base to slide on the first guide rail, and first installation base upper end slides and is connected with the second sleeve pipe, and first installation base end fixed connection is kept away from to the second sleeve pipe mute light location blank.
As the utility model relates to a preferred technical scheme of detecting instrument of free-form surface virtual image distance, second sleeve one side threaded connection has the second fastening screw, second fastening screw spiral-in end with first installation base is contradicted.
Adopt above-mentioned scheme: the position of the matte positioning white board can be adjusted by moving the second sleeve up and down, the position of the matte positioning white board can be positioned by the second locking screws, the matte positioning white board can be observed at different heights to be imaged and detected when the detection is convenient, and meanwhile, the moving position of the matte positioning white board can be visually observed by combining the moving of the matte positioning white board on the first guide rail.
As the utility model relates to a preferred technical scheme of detecting instrument of free-form surface virtual image distance, it is connected with second installation base to slide on the second guide rail, and second guide rail fixed connection is kept away from to second installation base TFT is like the source.
Adopt above-mentioned scheme: the movement of the TFT image source on the second guide rail can visually observe the moving position of the TFT image source, so that the corresponding distance adjustment can be conveniently carried out in the detection process.
As the utility model relates to a preferred technical scheme of detecting instrument of free-form surface virtual image distance, the installed part is including fixing third installation base on the objective table, third installation base slide on are connected with the slide bar, the draw-in groove has been seted up to the slide bar upper end, and the draw-in groove inner wall is fixed with elastic rubber, joint between two elastic rubber free-form surface mirror.
Adopt above-mentioned scheme: can be with inside the draw-in groove of product joint in the slide bar upper end, the detection of guaranteeing to go on is the nondestructive treatment and detects, and draw-in groove inside adopts elastic rubber simultaneously, effectively prevents the damage of free-form surface mirror in the testing process.
As the utility model relates to a preferred technical scheme of detecting instrument of free-form surface virtual image distance, slide bar one side threaded connection has the third fastening screw, third fastening screw spiral-in end with the third installation base is contradicted.
The utility model discloses an advantage and positive effect do:
1. the product can be clamped at the upper end of the sliding rod by using the detection instrument, the detection is nondestructive processing detection, and the transparent optical product can be used after the detection is finished;
2. the detection instrument can not only be used for sampling detection, but also be used for carrying out full detection on products;
3. the detection instrument is used for setting the scale on the side surface of the objective table, so that the virtual image distance of a product can be directly tested, and the operation is more convenient;
4. the detection instrument is simple and easy to manufacture, wide in application range and suitable for detection of various transparent or semi-reflective curved surfaces.
Drawings
Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention;
fig. 2 is a schematic front view of fig. 1 provided in an embodiment of the present invention;
fig. 3 is an enlarged schematic view of the position I in fig. 1 according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view taken along line a-a of fig. 2 according to an embodiment of the present invention;
fig. 5 is a schematic measurement diagram of an embodiment of the present invention;
in the figure: 1. an object stage; 2. a plane mirror; 3. a TFT image source; 4. a matte positioning white board; 5. a graduated scale; 6. a first guide rail; 7. a second guide rail; 8. a free-form surface mirror; 9. a vertical rod; 10. a first sleeve; 11. a first locking screw; 12. a first mounting base; 13. a second sleeve; 14. a second fastening screw; 15. a second mounting base; 16. a third mounting base; 17. a slide bar; 18. a card slot; 19. an elastic rubber; 20. and a third fastening screw.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the instrument for detecting a free-form surface virtual image distance provided by an embodiment of the present invention includes an object stage 1, a plane mirror 2, a TFT image source 3, a matte positioning white board 4, and a graduated scale 5, wherein the object stage 1 is sequentially fixed with a first guide rail 6 and a second guide rail 7 from one end to the other end, as shown in fig. 4, the cross sections of the first guide rail 6 and the second guide rail 7 are both "i" shaped guide rails, the matte positioning white board 4 is connected to the first guide rail 6 in a sliding manner, the TFT image source 3 is connected to the second guide rail 7 in a sliding manner, the plane mirror 2 is located at the end of the TFT image source 3 away from the matte positioning white board 4, the plane mirror 2 can move up and down along the installation position, a free-form surface mirror 8 is detachably installed between the TFT image source 3 and the matte positioning white board 4, the free-form surface mirror 8 is close to the end of the object, the graduated scale 5 is fixed on the side surface of the object stage 1.
As shown in fig. 1 or 2, a vertical rod 9 is fixed on the stage 1 near the flat mirror 2 end, a first sleeve 10 is connected on the vertical rod 9 in a sliding manner, and the first sleeve 10 is fixedly connected to the flat mirror 2 far from the vertical rod 9 end.
Simultaneously, threaded connection hole has been seted up to first sleeve pipe 10 outer wall one side, and threaded connection has first locking screw 11 in the threaded connection hole inside screw thread, first locking screw 11 screw-in end with the conflict of 9 outer walls of montant, first sleeve pipe 10 is in the first locking screw 11 of the in-process accessible of sliding and is restricted the removal, is convenient for adjust to specific test distance.
As shown in fig. 1 or 2, the first guide rail 6 is slidably connected with a first mounting base 12, the upper end of the first mounting base 12 is slidably connected with a second sleeve 13, and the second sleeve 13 is fixedly connected to the matte positioning whiteboard 4 far away from the first mounting base 12.
Meanwhile, one side of the second sleeve 13 is in threaded connection with a second fastening screw 14, the screwing end of the second fastening screw 14 is abutted to the first mounting base 12, and the second sleeve 13 can be limited to move through the second locking screw 14 in the sliding process, so that the specific test distance can be conveniently adjusted.
The second guide rail 7 is connected with a second mounting base 15 in a sliding mode, and the second mounting base 15 is far away from the end, far away from the second guide rail 7, of the TFT image source 3.
As shown in fig. 2 or 3, the mounting member includes a third mounting base 16 fixed on the object stage 1, a sliding rod 17 is connected to the third mounting base 16 in a sliding manner, a clamping groove 18 is formed in the upper end of the sliding rod 17, elastic rubber 19 is fixed on the inner wall of the clamping groove 18, the two elastic rubbers 19 are clamped between the two elastic rubbers 8, and the tested free-form surface mirror can be freely replaced.
As shown in fig. 2, a third fastening screw 20 is threadedly connected to one side of the sliding rod 17, and a screwing end of the third fastening screw 20 abuts against the third mounting base 16.
The utility model discloses a theory of operation: when in use, the free-form surface mirror 8 is arranged in the objective table 1; according to the theoretical parameters of the curved surface design, adjusting the TFT image source 3 and the observation plane mirror 2, and adjusting the object distance to the designed value of the curved surface; an observer observes whether the virtual image is positioned at the optical center of the free-form surface mirror 8 through the plane mirror 2; after the virtual image is adjusted, the matte positioning white board 4 is moved according to the actual virtual image position, and the virtual image and the matte positioning white board 4 are adjusted to be completely overlapped; further reading a scale 5 below the matte positioning white board 4 and recording measurement data; and finally, the free-form surface mirror 8 can be replaced, and the next measurement is repeated.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims (8)

1. The detection instrument for the free-form surface virtual image distance is characterized by comprising an object stage (1), a plane mirror (2), a TFT image source (3), a matte positioning white board (4) and a graduated scale (5), wherein the object stage (1) is sequentially fixed with a first guide rail (6) and a second guide rail (7) from one end to the other end, the cross sections of the first guide rail (6) and the second guide rail (7) are I-shaped guide rails, the matte positioning white board (4) is connected in a sliding manner on the first guide rail (6), the TFT image source (3) is connected in a sliding manner on the second guide rail (7), the plane mirror (2) is positioned at the end, far away from the matte positioning white board (4), the plane mirror (2) can move up and down along the installation position, and a free-form surface mirror (8) is detachably installed between the TFT image source (3) and the matte positioning white board (4), the free-form surface mirror (8) is close to the end of the objective table (1) and is provided with a mounting part, the mounting part can move up and down along the same direction, and the graduated scale (5) is fixed on the side surface of the objective table (1).
2. The apparatus for detecting the free-form surface virtual image distance as claimed in claim 1, wherein a vertical rod (9) is fixed on the stage (1) close to the plane mirror (2), a first sleeve (10) is connected on the vertical rod (9) in a sliding manner, and the first sleeve (10) is fixedly connected to the plane mirror (2) far away from the vertical rod (9).
3. The apparatus for detecting the virtual image distance of the free-form surface as claimed in claim 2, wherein a threaded connection hole is formed in one side of the outer wall of the first sleeve (10), a first locking screw (11) is connected to the interior of the threaded connection hole in a threaded manner, and a screwing end of the first locking screw (11) abuts against the outer wall of the vertical rod (9).
4. The apparatus for detecting the free-form surface virtual image distance according to claim 1, wherein a first mounting base (12) is slidably connected to the first guide rail (6), a second sleeve (13) is slidably connected to the upper end of the first mounting base (12), and the second sleeve (13) is fixedly connected to the matte positioning white board (4) away from the first mounting base (12).
5. The apparatus for detecting the free-form surface virtual image distance as claimed in claim 4, wherein a second fastening screw (14) is threadedly connected to one side of the second sleeve (13), and a screwing end of the second fastening screw (14) abuts against the first mounting base (12).
6. The apparatus for detecting the free-form surface virtual image distance as claimed in claim 1, wherein a second mounting base (15) is slidably connected to the second guide rail (7), and the second mounting base (15) is fixedly connected to the TFT image source (3) far away from the second guide rail (7).
7. The free-form surface virtual image distance detection instrument according to claim 1, wherein the mounting member comprises a third mounting base (16) fixed on the stage (1), a sliding rod (17) is slidably connected to the third mounting base (16), a clamping groove (18) is formed in the upper end of the sliding rod (17), elastic rubber (19) is fixed on the inner wall of the clamping groove (18), and the free-form surface mirror (8) is clamped between the two elastic rubbers (19).
8. The apparatus for measuring a free-form surface virtual image distance as claimed in claim 7, wherein a third fastening screw (20) is threadedly coupled to one side of the sliding rod (17), and a screwing end of the third fastening screw (20) abuts against the third mounting base (16).
CN202020593508.8U 2020-04-20 2020-04-20 Instrument for detecting free-form surface virtual image distance Active CN211626881U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020593508.8U CN211626881U (en) 2020-04-20 2020-04-20 Instrument for detecting free-form surface virtual image distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020593508.8U CN211626881U (en) 2020-04-20 2020-04-20 Instrument for detecting free-form surface virtual image distance

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CN211626881U true CN211626881U (en) 2020-10-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112629809A (en) * 2020-12-21 2021-04-09 中国计量大学 Gas film parameter measuring device of segmented shaft type gas curved surface static pressure restrictor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112629809A (en) * 2020-12-21 2021-04-09 中国计量大学 Gas film parameter measuring device of segmented shaft type gas curved surface static pressure restrictor
CN112629809B (en) * 2020-12-21 2024-03-26 中国计量大学 Gas film parameter measuring device of segmented shaft type gas curved surface static pressure throttle

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