CN204178057U - A kind of laser beam human eye protective device - Google Patents
A kind of laser beam human eye protective device Download PDFInfo
- Publication number
- CN204178057U CN204178057U CN201420670181.4U CN201420670181U CN204178057U CN 204178057 U CN204178057 U CN 204178057U CN 201420670181 U CN201420670181 U CN 201420670181U CN 204178057 U CN204178057 U CN 204178057U
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- China
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- phase plate
- random phase
- laser beam
- pedestal
- human eye
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Abstract
A kind of laser beam human eye protective device, is characterized in that: comprise laser instrument, scanister; random phase plate, for arranging the pedestal of random phase plate, beam-expanding collimation device; contracting bundle collimator apparatus; wherein laser instrument, scanister, random phase plate; beam-expanding collimation device; contracting bundle collimator apparatus is successively set in light path, and wherein random phase plate is arranged on pedestal, and the control being subject to pedestal can be left or enter in described light path.
Description
Technical field
The utility model relates to a kind of laser beam human eye protective device, and what relate generally to is a kind of optical projection means.
Background technology
In the middle of prior art, picture optical projector, and the horizontal line that architecture uses or perpendicular line, or the lubber-line etc. that processing and manufacturing is industrial, generally laser beam is all used to project, use specific scanning technique thus optical design needed for being formed, to form picture, or line of collimation etc.For optical projector; generally human eye protective device is all provided with in existing optical projection apparatus; it is for closing projected light in time when there being people to enter into view field, and object is to prevent strong projection laser from producing permanent injury for the human eye entering projection in zone people.But in existing projection arrangement is generally all complex structure, cost is high, and often instantaneously by all projected light Close Alls, ongoing giving lessons will be interrupted like this, other form is also had to be exactly reduce the emergent power of laser instrument, thus the performance number of laser beam be reduced under the injured threshold value of human eye, but this situation also can bring some problems, also namely can affect the viewing effect of spectators.And for laser projection device that is industrial and architectural use; generally all seldom can use human eye protective device; the existence of these problems just, make to be badly in need of a kind of structure simply and very practical human eye protective device, the utility model is just directed to this and puts forward.
Summary of the invention
The utility model is exactly for problem above, proposes a kind of structure simple very practical, does not need to close laser instrument, and obviously can not reduce the brightness of laser beam, and can realize the needs to eye-safe in use procedure.
The utility model provides a kind of human eye protective device, it is characterized in that: comprise laser instrument, scanister, random phase plate, for arranging the pedestal of random phase plate, beam-expanding collimation device, contracting bundle collimator apparatus, wherein laser instrument, scanister, random phase plate, beam-expanding collimation device, contracting bundle collimator apparatus is successively set in light path, wherein random phase plate is arranged on pedestal, and the control being subject to pedestal can be left or enter in described light path, also comprise a detection means, this detection means can detect whether someone enters in the projected area of laser beam, a controller is also connected with this detecting device, this controller is connected with described pedestal, when described detecting device detects that someone enters the projected area of laser beam, Detection Information is transferred to controller, controller controls described pedestal and makes random phase plate enter described light path, laser beam is made to pass random phase plate, and when not detecting that people enters the projected area of laser beam, random phase plate is then made to leave described light path.
According to an embodiment of the present utility model, described beam-expanding collimation device comprises former and later two positive lenss, and the focal length of previous lens is less than the focal length of rear lens, and confocal in two lens light paths.
According to an embodiment of the present utility model, described contracting bundle collimator apparatus comprises former and later two positive lenss, and the focal length of previous lens is greater than the focal length of rear lens, and confocal in two lens light paths.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model human eye protective device;
Wherein 1 represents laser instrument, and 2 represent scanister, and 3 represent pedestal, and 4 represent random phase plate, and 5 represent beam-expanding collimation, and 6 represent contracting bundle collimation.
Embodiment
On basis by reference to the accompanying drawings, content of the present utility model is further described in more detail below.
Fig. 1 shows the schematic diagram of human eye protective device of the present utility model.This human eye protective device comprises laser instrument 1; scanister 2; random phase plate 4, for arranging the pedestal of random phase plate 4, beam-expanding collimation device 5; contracting bundle collimator apparatus 6; wherein laser instrument 1, scanister 2, random phase plate 4; beam-expanding collimation device 5, contracting bundle collimator apparatus 6 is successively set in light path.Wherein random phase plate is arranged on pedestal, and the control being subject to pedestal can be left or enter in described light path.In addition to these components, also comprise a detection means, this detection means can detect whether someone enters in the projected area of laser beam, a controller is also connected with this detecting device, this controller is connected with described pedestal, when described detecting device detects that someone enters the projected area of laser beam, Detection Information is transferred to controller, controller controls described pedestal and makes random phase plate enter described light path, makes laser beam pass random phase plate.And when not detecting that people enters the projected area of laser beam, then make random phase plate leave described light path.
Why laser beam can produce to human eye that injury mainly causes due to the coherence of laser, due to the existence of coherence, cause the energy density of laser beam large especially, so central scope of the present utility model is exactly the coherence by destroying laser beam, thus reduce the energy density of laser beam, laser beam human eye nocuity is reduced.First incided on scanister by the laser beam of laser emitting, modulation via scanister obtains required laser pattern, and then through beam-expanding collimation device, be in order to avoid the formation of the operation owing to expand etc. for pattern has an impact after why beam-expanding collimation device being placed on scanister.Beam-expanding collimation device of the present utility model comprises former and later two positive lenss, and the previous focal length of lens is less than the focal length of rear lens, and both are confocal in light path.Laser beam enters on contracting bundle collimator apparatus after beam-expanding collimation, and contracting bundle collimator apparatus is also comprise former and later two positive lenss, and the previous focal length of lens is greater than the focal length of rear lens, and both are also confocal in light path.Pedestal between beam-expanding collimation device and contracting bundle collimator apparatus, pedestal is provided with random phase plate, after random phase plate enters light path, laser beam through beam-expanding collimation will pass described random phase plate, and namely laser beam produces certain destruction to the correlativity of laser beam after random phase plate.After random phase plate must be arranged on and expand herein, certain then will be very little for the impact of coherence.When pick-up unit detects that namely controlling random phase plate after someone enters laser beam projects region enters light path, thus the effect of protection human eye can be played.
Claims (3)
1. a laser beam human eye protective device, it is characterized in that: comprise laser instrument, scanister, random phase plate, for arranging the pedestal of random phase plate, beam-expanding collimation device, contracting bundle collimator apparatus, wherein laser instrument, scanister, random phase plate, beam-expanding collimation device, contracting bundle collimator apparatus is successively set in light path, wherein random phase plate is arranged on pedestal, and the control being subject to pedestal can be left or enter in described light path, also comprise a detection means, this detection means can detect whether someone enters in the projected area of laser beam, a controller is also connected with this detecting device, this controller is connected with described pedestal, when described detecting device detects that someone enters the projected area of laser beam, Detection Information is transferred to controller, controller controls described pedestal and makes random phase plate enter described light path, laser beam is made to pass random phase plate, and when not detecting that people enters the projected area of laser beam, random phase plate is then made to leave described light path.
2. human eye protective device according to claim 1, is characterized in that, described beam-expanding collimation device comprises former and later two positive lenss, and the focal length of previous lens is less than the focal length of rear lens, and confocal in two lens light paths.
3. human eye protective device according to claim 1, is characterized in that: described contracting bundle collimator apparatus comprises former and later two positive lenss, and the focal length of previous lens is greater than the focal length of rear lens, and confocal in two lens light paths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670181.4U CN204178057U (en) | 2014-11-12 | 2014-11-12 | A kind of laser beam human eye protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670181.4U CN204178057U (en) | 2014-11-12 | 2014-11-12 | A kind of laser beam human eye protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204178057U true CN204178057U (en) | 2015-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670181.4U Expired - Fee Related CN204178057U (en) | 2014-11-12 | 2014-11-12 | A kind of laser beam human eye protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204178057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443429A (en) * | 2016-05-31 | 2017-12-08 | 赛融公司 | Process tracking laser camera with non-human eye secure mode of operation and eye-safe operation's pattern |
| CN110045516A (en) * | 2019-04-22 | 2019-07-23 | 北京科益虹源光电技术有限公司 | A kind of lens adjustment device for excimer laser |
-
2014
- 2014-11-12 CN CN201420670181.4U patent/CN204178057U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443429A (en) * | 2016-05-31 | 2017-12-08 | 赛融公司 | Process tracking laser camera with non-human eye secure mode of operation and eye-safe operation's pattern |
| CN107443429B (en) * | 2016-05-31 | 2020-09-15 | 赛融公司 | Process tracking laser camera with non-eye safe and eye safe modes of operation |
| CN110045516A (en) * | 2019-04-22 | 2019-07-23 | 北京科益虹源光电技术有限公司 | A kind of lens adjustment device for excimer laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151112 |
|
| EXPY | Termination of patent right or utility model |