CN204130899U - A kind of laser projection device - Google Patents
A kind of laser projection device Download PDFInfo
- Publication number
- CN204130899U CN204130899U CN201420670158.5U CN201420670158U CN204130899U CN 204130899 U CN204130899 U CN 204130899U CN 201420670158 U CN201420670158 U CN 201420670158U CN 204130899 U CN204130899 U CN 204130899U
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- laser
- seed
- oscillator
- laser beam
- projection device
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Abstract
A kind of laser projection device, is characterized in that: comprise the laser be made up of seed source and seed amplification oscillator, scanning means, detector and controller; The laser beam that laser is launched is as projecting beam, and seed source sends seed laser, and this seed laser enters seed amplification oscillator and carries out vibration amplification, thus launches the seed laser bundle amplified through energy.This projecting beam through scanning means be modulated at screen presents required for the pattern that presents or lines, for detecting in the projected area of laser beam, whether someone enters detector, then detection signal is sent to controller, according to detection signal, controller judges whether that someone enters laser beam projects region, if detect that someone enters laser beam projection region, then send control command to laser, make seed laser Shu Buzai enter seed and amplify oscillator.
Description
Technical field
The utility model relates to a kind of laser projection device, belongs to field of lasers.
Background technology
In the middle of prior art, picture optical projector, and the horizontal line that architecture uses or vertical 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 projected area 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, 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 laser projection 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, and obviously can not reduce the brightness of laser beam, and can realize the needs to eye-safe in use procedure.
According to an embodiment of the present utility model, provide a kind of laser projection device, it is characterized in that: comprise the laser be made up of seed source and seed amplification oscillator, scanning means, detector and controller; The laser beam that laser is launched is as projecting beam, and seed source sends seed laser, and this seed laser enters seed amplification oscillator and carries out vibration amplification, thus launches the seed laser bundle amplified through energy.This projecting beam through scanning means be modulated at screen presents required for the pattern that presents or lines, for detecting in the projected area of laser beam, whether someone enters detector, then detection signal is sent to controller, according to detection signal, controller judges whether that someone enters laser beam projects region, if detect that someone enters laser beam projection region, then send control command to laser, make seed laser Shu Buzai enter seed and amplify oscillator.
According to an embodiment of the present utility model, described in make seed laser Shu Buzai enter seed to amplify oscillator be realize by cutting off the power supply of seed source.
According to an embodiment of the present utility model, described in make seed laser Shu Buzai enter seed to amplify oscillator be realize by amplifying the rotatable baffle arranged between oscillator at seed source and seed.
According to an embodiment of the present utility model, seed laser Shu Buzai enters seed and amplifies described seed after oscillator and amplify oscillator and be a laser worked independently.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of laser projection device of the present utility model;
Wherein 1 represents seed source, and 2 represent that seed amplifies oscillator, and 3 represent laser, and 4 represent controller, and 5 represent detector, and 6 represent scanning means.
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 laser projection device of the present utility model.This laser projection device comprises the laser 3 be made up of seed source 1 and seed amplification oscillator 2, the laser beam that laser 3 is launched is as projecting beam, seed source sends seed laser, this seed laser enters seed amplification oscillator 2 and carries out vibration amplification, thus launches the seed laser bundle amplified through energy.Also comprise scanning means 6, detector 5, and controller 4.This projecting beam through scanning means 6 be modulated at screen presents required for the pattern that presents or lines.For detecting in the projected area of laser beam, whether someone enters detector 5, then detection signal is sent to controller 4, according to detection signal, controller 4 judges whether that someone enters laser beam projects region, if detect that someone enters laser beam projection region, then send control command to laser 3, make seed laser Shu Buzai enter seed and amplify oscillator 3, after seed source cuts off, seed amplifies oscillator 3 and is just equivalent to a laser worked alone, its process of launching is determined by parameters such as the chamber of the gain wavelength of itself and resonant cavity are long, now due to the input without seed laser bundle, also namely without the wavelength occupying leading position, the operation wavelength of now seed amplification oscillator will become very wide, thus the coherence of outgoing laser beam can be reduced greatly.
We know, 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, even if can not destroy the coherence of laser beam completely, but the reduction of coherence is also a kind of mode be highly profitable.The utility model puts forward based on this thought just, when normally projecting, adopt the laser beam that the extraordinary laser with seed source of coherence is launched, because it has extraordinary coherence, so the brightness that less power can reach higher can be used, so both can meet the needs of projection, also reduce power consumption.After detecting that someone enters into projected area, detection signal is sent to controller, controller controls the input that laser cuts off seed source again, thus reduce the coherence of projecting laser bundle greatly, the nocuity for human eye then brought by laser beam just corresponding reduction, thus the needs to eye-safe can be realized.
The input wherein cutting off seed source can comprise the power supply turning off seed source, can also be use rotatable baffle plate, this baffle plate is arranged on seed source and seed amplifies between oscillator, when needing the input cutting off seed laser bundle, is rotated between the two by this baffle plate.
Claims (4)
1. a laser projection device, is characterized in that: comprise the laser be made up of seed source and seed amplification oscillator, scanning means, detector and controller, the laser beam that laser is launched is as projecting beam, seed source sends seed laser, this seed laser enters seed amplification oscillator and carries out vibration amplification, thus launch the seed laser bundle amplified through energy. this projecting beam through scanning means be modulated at screen presents required for the pattern that presents or lines, for detecting in the projected area of laser beam, whether someone enters detector, then detection signal is sent to controller, according to detection signal, controller judges whether that someone enters laser beam projects region, if detect that someone enters laser beam projection region, then send control command to laser, make seed laser Shu Buzai enter seed and amplify oscillator.
2. laser projection device according to claim 1, is characterized in that: described in make seed laser Shu Buzai enter seed to amplify oscillator be realize by cutting off the power supply of seed source.
3. laser projection device according to claim 1, is characterized in that: described in make seed laser Shu Buzai enter seed to amplify oscillator be realize by amplifying the rotatable baffle arranged between oscillator at seed source and seed.
4. laser projection device according to claim 1, is characterized in that: seed laser Shu Buzai enters seed and amplifies described seed after oscillator and amplify oscillator and be a laser worked independently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670158.5U CN204130899U (en) | 2014-11-12 | 2014-11-12 | A kind of laser projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670158.5U CN204130899U (en) | 2014-11-12 | 2014-11-12 | A kind of laser projection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204130899U true CN204130899U (en) | 2015-01-28 |
Family
ID=52387221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670158.5U Expired - Fee Related CN204130899U (en) | 2014-11-12 | 2014-11-12 | A kind of laser projection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204130899U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107408986A (en) * | 2015-03-20 | 2017-11-28 | 甲骨文国际公司 | The laser array of security enhancing |
| CN108376251A (en) * | 2018-02-27 | 2018-08-07 | 广东欧珀移动通信有限公司 | Control method, control device, terminal, computer equipment and storage medium |
| CN110645907A (en) * | 2018-06-26 | 2020-01-03 | 精工爱普生株式会社 | Three-dimensional measurement device, control device, and robot system |
| US11335028B2 (en) | 2018-02-27 | 2022-05-17 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control method based on facial image, related control device, terminal and computer device |
-
2014
- 2014-11-12 CN CN201420670158.5U patent/CN204130899U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107408986A (en) * | 2015-03-20 | 2017-11-28 | 甲骨文国际公司 | The laser array of security enhancing |
| CN107408986B (en) * | 2015-03-20 | 2020-01-21 | 甲骨文国际公司 | Security enhanced laser array |
| CN108376251A (en) * | 2018-02-27 | 2018-08-07 | 广东欧珀移动通信有限公司 | Control method, control device, terminal, computer equipment and storage medium |
| US11335028B2 (en) | 2018-02-27 | 2022-05-17 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control method based on facial image, related control device, terminal and computer device |
| CN110645907A (en) * | 2018-06-26 | 2020-01-03 | 精工爱普生株式会社 | Three-dimensional measurement device, control device, and robot system |
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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: 20150128 Termination date: 20151112 |
|
| EXPY | Termination of patent right or utility model |