CN211086819U - Laser homogenizing device - Google Patents
Laser homogenizing device Download PDFInfo
- Publication number
- CN211086819U CN211086819U CN201922009841.XU CN201922009841U CN211086819U CN 211086819 U CN211086819 U CN 211086819U CN 201922009841 U CN201922009841 U CN 201922009841U CN 211086819 U CN211086819 U CN 211086819U
- Authority
- CN
- China
- Prior art keywords
- laser
- lens
- piezoelectric
- mirror
- swing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The utility model provides a laser homogenizing device, which comprises a laser transmitter, a piezoelectric swing mirror, a drive circuit and a laser lens, wherein the piezoelectric swing mirror is connected with the drive circuit, the laser lens is arranged on a reflection light path, and a layer of total reflection film is adhered on the surface of the piezoelectric swing mirror; laser beams emitted by the laser emitter irradiate on the total reflection film, the piezoelectric swing mirror swings at a high speed according to the voltage and the frequency of the driving circuit, the laser beams enter the laser lens for beam scaling after being deflected at a high speed, and therefore the laser beams uniformly irradiate on an irradiation target in a high-speed shaking mode. The utility model discloses an adjust drive circuit's voltage and frequency, realize piezoelectricity pendulum mirror swing angle and swing frequency's regulation, make the laser beam can realize appointed range and scan on shining the target to realize the effect that the broad width shines, match 16: and a 9-wide screen fully utilizes a laser light source, and avoids resource waste.
Description
Technical Field
The utility model relates to a laser homogenization technical field, more specifically say, relate to a laser homogenization device.
Background
Laser has extremely high luminous efficiency and luminous intensity, and is widely applied to lighting equipment, but because of the spatial coherence of the laser, a large number of patterns with alternate bright and dark patterns are generated on an irradiated target, so that irradiation spots are not uniform, and the visual effect is influenced. If used as auxiliary lighting for an imaging device, the captured image will also be covered by an irregular light and dark pattern. This characteristic of laser light severely limits the application of laser light in the field of illumination, and therefore, the laser light needs to be homogenized to the extent of practical use.
The existing laser homogenization techniques mainly comprise two types: firstly, a multi-tube light source fusion technology is adopted, a plurality of light sources are coupled into an optical fiber, multimode mixing and superposition are carried out in the optical fiber, and then the optical fiber outputs and projects the light, so that the influence of the spatial coherence of laser is reduced, but the homogenization efficiency is low, the homogenization effect is poor, and the utilization rate of the laser is not high; secondly, adopt array semiconductor laser emitter, array semiconductor laser emitter is last to be provided with thousands of laser emitter and throws simultaneously, can obtain fully overlapping in space, and the homogenization effect is strengthened, still does not reach the idealization degree yet, and it has with high costs, generates heat seriously, the difficult design scheduling problem of heat dissipation route.
Meanwhile, the laser irradiation light spots are fixed to be circular and are not matched with the wide-screen display, if the full-screen illumination effect is achieved, the light spots need to be enlarged enough, a large amount of laser light rays irradiate areas outside the screen, and waste of light sources is caused.
The above disadvantages need to be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a laser homogenizing device.
The utility model discloses technical scheme as follows:
a laser homogenizing device is characterized by comprising a laser emitter, a piezoelectric swing mirror, a driving circuit and a laser lens, wherein the piezoelectric swing mirror is connected with the driving circuit, the laser lens is arranged on a reflection light path, and a layer of total reflection film is adhered to the surface of the piezoelectric swing mirror;
the laser beam emitted by the laser emitter irradiates the total reflection film, and the piezoelectric swing mirror swings at a high speed according to the voltage and the frequency of the driving circuit, so that the laser beam is deflected at a high speed and then enters the laser lens to zoom the beam, and the laser beam uniformly irradiates an irradiation target in a high-speed shaking mode.
According to above scheme the utility model discloses, a serial communication port, laser lens and driving motor with be connected, driving motor drives laser lens is in the reflection light path removes.
Further, the laser lens is a convex lens.
Further, the laser lens is a concave lens.
According to above-mentioned scheme the utility model discloses, its characterized in that, laser emitter is multicore piece semiconductor laser emitter.
According to above-mentioned scheme the utility model discloses, its characterized in that, laser emitter's laser emission mouth with the middle part of piezoelectricity pendulum mirror is just to setting up.
According to above-mentioned scheme the utility model discloses, its characterized in that, when piezoelectricity pendulum mirror did not swing, with the contained angle that the laser beam that laser emitter sent formed is 45 degrees.
The utility model discloses gain the effect to lie in: the utility model discloses an adjust drive circuit's voltage and frequency, realize piezoelectricity pendulum mirror swing angle and swing frequency's regulation, make the laser beam can realize appointed range and scan on shining the target to realize the effect that the broad width shines, match 16: the screen is 9 wide, the laser light source is fully utilized, and the waste of resources is avoided; the size of the illumination light spot is adjusted by adjusting the position of the laser lens; the cost is low, the homogenization effect is good, and meanwhile, the device can be combined with a homogenization laser on the market to further homogenize, so that the final homogenization effect is better.
Drawings
Fig. 1 is a schematic diagram of an optical path according to an embodiment of the present invention;
in the figure, 1, a laser transmitter; 2. a piezoelectric oscillating mirror; 3. a laser lens; 4. irradiating the target; 21. a total reflection film.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail.
As shown in fig. 1, a laser homogenizing device includes a laser emitter 1, a piezoelectric oscillating mirror 2, a driving circuit and a laser lens 3, the piezoelectric oscillating mirror 2 is connected with the driving circuit, the laser lens 3 is disposed on a reflection light path, and a layer of total reflection film 21 is adhered on the surface of the piezoelectric oscillating mirror 2. The laser beam emitted by the laser emitter 1 irradiates on the total reflection film 21, the piezoelectric swing mirror 2 swings at a high speed according to the voltage and the frequency of the driving circuit, so that the laser beam is deflected at a high speed and then enters the laser lens 3 to zoom the beam, and the laser beam uniformly irradiates on the irradiation target 4 in a high-speed shaking mode. The aim of uniform irradiation is achieved by controlling the swing amplitude of the piezoelectric swing mirror 2 and the zooming of the illumination light spots and utilizing the persistence of vision effect of human eyes or an image sensor.
In this embodiment, laser lens 3 and driving motor with be connected, driving motor drives laser lens 3 and moves on the reflection light path, through adjusting laser lens 3 in reflection light path position, realizes the regulation to the illumination facula size.
Further, the laser lens 3 is a convex lens, and the laser lens 3 performs beam divergence on the deflected laser beam, so that the laser beam is shoved onto the irradiation target 4 in a high-speed dithering manner.
Further, the laser lens 3 is a concave lens, and the laser lens 3 performs beam focusing on the deflected laser beam, thereby causing the laser beam to impinge on the irradiation target 4 in a high-speed dither manner.
In the present embodiment, the laser emitter 1 is a multi-chip semiconductor laser emitter 1, and the multi-chip semiconductor laser emitter 1 is used as the laser emitter 1, so that the emitted laser beam is primarily homogenized before being irradiated onto the piezoelectric oscillating mirror 22, and the final homogenization effect is better.
In this embodiment, the laser emitting port of the laser emitter 1 is disposed opposite to the middle of the piezoelectric oscillating mirror 2, so that the laser beam irradiates the middle of the piezoelectric oscillating mirror 22, and the reflection angle of the laser beam can be better controlled.
In this embodiment, when the piezoelectric oscillating mirror 2 does not oscillate, an included angle formed between the piezoelectric oscillating mirror 2 and the laser beam emitted by the laser emitter 1 is 45 degrees, so that when the piezoelectric oscillating mirror 22 oscillates, the deflected angle of the laser beam can be better controlled.
In the present embodiment, the larger the voltage of the driving circuit is, the larger the swing amplitude of the piezoelectric swing mirror 2 is; the higher the frequency of the drive circuit, the faster the oscillation frequency of the piezoelectric oscillating mirror 2. By adjusting the voltage and frequency of the driving circuit, the laser beam can scan on the irradiation target 4 with a specified amplitude, thereby realizing the effect of broad irradiation, matching 16: 9 wide screen.
The utility model discloses gain the effect to lie in: the utility model discloses an adjust drive circuit's voltage and frequency, realize piezoelectricity pendulum mirror swing angle and swing frequency's regulation, make the laser beam can realize appointed range and scan on shining the target to realize the effect that the broad width shines, match 16: the screen is 9 wide, the laser light source is fully utilized, and the waste of resources is avoided; the size of the illumination light spot is adjusted by adjusting the position of the laser lens; the cost is low, the homogenization effect is good, and meanwhile, the device can be combined with a homogenization laser on the market to further homogenize, so that the final homogenization effect is better.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A laser homogenizing device is characterized by comprising a laser emitter, a piezoelectric swing mirror, a driving circuit and a laser lens, wherein the piezoelectric swing mirror is connected with the driving circuit, the laser lens is arranged on a reflection light path, and a layer of total reflection film is adhered to the surface of the piezoelectric swing mirror;
the laser beam emitted by the laser emitter irradiates the total reflection film, and the piezoelectric swing mirror swings at a high speed according to the voltage and the frequency of the driving circuit, so that the laser beam is deflected at a high speed and then enters the laser lens to zoom the beam, and the laser beam uniformly irradiates an irradiation target in a high-speed shaking mode.
2. The laser homogenizing apparatus of claim 1, wherein the laser lens is connected to a driving motor, and the driving motor drives the laser lens to move on the reflected light path.
3. The laser homogenizing device of claim 2, wherein the laser lens is a convex lens.
4. The laser homogenizing device of claim 2, wherein the laser lens is a concave lens.
5. The laser homogenizing apparatus of claim 1, wherein the laser emitter is a multi-chip semiconductor laser emitter.
6. The laser homogenizing device of claim 1, wherein the laser emitting port of the laser emitter is disposed opposite to the middle of the piezoelectric oscillating mirror.
7. The laser homogenizer of claim 1, wherein the piezoelectric oscillating mirror forms an angle of 45 degrees with the laser beam emitted by the laser emitter when the piezoelectric oscillating mirror is not oscillating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922009841.XU CN211086819U (en) | 2019-11-20 | 2019-11-20 | Laser homogenizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922009841.XU CN211086819U (en) | 2019-11-20 | 2019-11-20 | Laser homogenizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211086819U true CN211086819U (en) | 2020-07-24 |
Family
ID=71626043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922009841.XU Active CN211086819U (en) | 2019-11-20 | 2019-11-20 | Laser homogenizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211086819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927982A (en) * | 2019-11-20 | 2020-03-27 | 深圳市安星数字系统有限公司 | Laser homogenizing device and method |
-
2019
- 2019-11-20 CN CN201922009841.XU patent/CN211086819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927982A (en) * | 2019-11-20 | 2020-03-27 | 深圳市安星数字系统有限公司 | Laser homogenizing device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6309116B2 (en) | Light distribution generation method and headlamp for generating light distribution on traveling road | |
| CN106904117B (en) | Method for controlling a motor vehicle headlight | |
| JP6457081B2 (en) | A method of generating light distribution on a roadway using an automobile headlamp | |
| CN108391442B (en) | Method for controlling a motor vehicle headlight | |
| US20080304128A1 (en) | Speckle Reduction by Angular Scanning for Laser Projection Displays | |
| CN104728728A (en) | Lighting device | |
| WO2018209722A1 (en) | Projection light source with enhanced light intensity and projection system thereof | |
| CN103186026B (en) | Light source device, light source generation method and laser projector with light source device | |
| CN211086819U (en) | Laser homogenizing device | |
| JP2017134133A (en) | Optical scanner | |
| JP2016046072A (en) | Lighting device and vehicle headlight | |
| CN209542971U (en) | A kind of realization semiconductor laser spot shaping and homogenized device | |
| KR101189526B1 (en) | Method for sealing wide frit using laser | |
| US7218651B2 (en) | Arrangement for the generation of a pulsed laser beam of high average output | |
| CN108705774A (en) | A kind of 3D printing collimates uniform light-source system and print system | |
| CN110927982A (en) | Laser homogenizing device and method | |
| WO2023083337A1 (en) | Structured light projection module and three-dimensional scanning device | |
| JPS5814799A (en) | Photo head with flash beam | |
| CN203720453U (en) | Laser illumination homogenization device and infrared night vision video system | |
| JP2004341211A (en) | Projector and its control method | |
| JP2013254025A (en) | Laser irradiating apparatus | |
| JP2013037324A (en) | Optical scanner | |
| JP2019174663A (en) | Image projection device | |
| CN218671813U (en) | White light laser light source capable of homogenizing | |
| CN215259618U (en) | Laser illumination homogenizing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |