CN210270496U - Laser lighting system - Google Patents
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- CN210270496U CN210270496U CN201921597385.9U CN201921597385U CN210270496U CN 210270496 U CN210270496 U CN 210270496U CN 201921597385 U CN201921597385 U CN 201921597385U CN 210270496 U CN210270496 U CN 210270496U
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Abstract
A laser illumination system, comprising: the device comprises a blue laser light source, a red laser light source, a rotating wheel and a fluorescent wheel, wherein the blue laser light source can generate a blue laser beam; the red laser light source can generate a red laser beam, and the red laser beam can be guided to a projection direction; the rotating wheel is rotatably arranged on the path of the blue laser beam and the path of the red laser beam and comprises a light combining area, and the blue laser beam can penetrate through the light combining area to generate a first excitation beam; the fluorescent wheel is rotatably arranged on a path of the first excitation light beam, the fluorescent wheel is provided with a first conversion area, the first conversion area is provided with yellow fluorescent powder, the yellow fluorescent powder can be excited by the first excitation light beam to generate a yellow light beam and is guided to the light combining area, the yellow light beam penetrates through the light combining area to generate an orange light beam and is guided to the projection direction to be combined with the red laser beam to generate red projection light, the brightness of the red laser beam can be increased by the orange light beam, the selection requirement of the red laser light source is reduced while the projection requirement is met, and the production cost is reduced.
Description
Technical Field
The utility model belongs to the light source field, concretely relates to laser lighting system.
Background
A Projector (Projector) projects color lights of different colors to a display device to display images through a light path system composed of a light source, a filter, a fluorescent color Wheel (PW), a spectroscope and other optical elements.
Besides the size and cost of the projector, different light sources or different optical path system designs may affect the size and cost of the projector. But also directly affect the brightness and color appearance of the final displayed image.
In an existing laser projector, a blue laser is generally used as a main light source, light emitted by the blue laser is converted into yellow light and green light through a fluorescent powder rotating wheel, and then the yellow light and the green light are converted into three colors of red, green and blue through a color filter wheel and projected on a DMD chip, so that an image seen by human eyes is formed. Or the red light color gamut obtained by color filtering is low and cannot meet the increasing color requirements by adding an LED light source or another laser light source in the light path structure, and the latter needs to additionally add a separate laser light path, so that the cost of the projector using the red laser light source as the light source is very high, the market acceptance is not high, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming of prior art, provide a laser lighting system.
The utility model adopts the following technical scheme:
a laser illumination system, comprising: a blue laser light source, a red laser light source, a rotating wheel and a fluorescent wheel,
the blue laser light source can generate a blue laser beam;
the red laser light source can generate a red laser beam, and the red laser beam can be guided to a projection direction;
the rotating wheel is rotatably arranged on the path of the blue laser beam and the path of the red laser beam and comprises a light combining area, and the blue laser beam can penetrate through the light combining area to generate a first excitation beam;
the fluorescent wheel is rotatably arranged on a path of the first excitation light beam, the fluorescent wheel is provided with a first conversion area, yellow fluorescent powder is arranged in the first conversion area, the yellow fluorescent powder can be excited by the first excitation light beam to generate a yellow light beam and guide the yellow light beam to the light combining area, and the yellow light beam penetrates through the light combining area to generate an orange light beam and guide the orange light beam to the projection direction to combine with the red laser light beam to form red projection light.
The red laser beam eccentrically penetrates through the first collimating mirror, is reflected by the light combining area, eccentrically penetrates through the first collimating mirror in sequence and then is guided to the projection direction; the blue laser beam eccentrically penetrates through the first collimating mirror, penetrates through the light combining area, eccentrically penetrates through the second collimating mirror and excites the first conversion area to generate a yellow light beam in sequence; the yellow light beam penetrates through the second collimating lens, penetrates through the light combining area, penetrates through the first collimating lens, and then is guided to the projection direction to be combined with the red laser beam to form red projection light.
Furthermore, the light guide assembly further comprises a first optical filter, the first optical filter is arranged on the path of the blue laser beam and the path of the red laser beam, and the first optical filter can be used for the blue laser beam and the red laser beam to penetrate through and reflect the orange laser beam to guide the projection direction.
Furthermore, the light guide assembly further comprises a reflector, and the red laser beam sequentially penetrates through the first optical filter, eccentrically penetrates through the first collimating mirror, is reflected by the light combining area, eccentrically penetrates through the first collimating mirror, penetrates through the first optical filter, is reflected by the reflector and then is guided to the projection direction.
Furthermore, the light guide assembly further comprises a second optical filter, the second optical filter is arranged on the path of the blue laser beam and the path of the red laser beam, the blue laser beam sequentially penetrates through the second optical filter and the first optical filter, and the red laser beam is emitted by the second optical filter and guided to penetrate through the first optical filter.
Furthermore, the light guide assembly further comprises a third collimating mirror, the third collimating mirror is arranged on a path of the projection direction, and the red laser beam is guided to the projection direction to be combined with the orange beam to form red projection light which penetrates through the third collimating mirror.
Furthermore, the rotating wheel also comprises a penetrating area and a reflecting area, the penetrating area can be penetrated by the blue laser beam, and the reflecting area can reflect the blue laser beam and guide the blue laser beam to the projection direction.
Furthermore, the penetration region comprises a first penetration region and a second penetration region, the fluorescent wheel is provided with a second conversion region and a third conversion region, the second conversion region is provided with yellow fluorescent powder, and the blue laser beam penetrates through the first penetration region to excite the second conversion region to generate yellow light beams and guide the yellow light beams to the projection direction; the third conversion area is provided with green fluorescent powder, and the blue laser beam penetrates through the second penetration area to excite the third conversion area to generate a green beam and guide the green beam to the projection direction.
Further, the penetration region includes a first penetration region and a second penetration region, the first conversion region is circumferentially arranged around the fluorescent wheel contour, and the blue laser beam penetrates the first penetration region or the second penetration region to excite the first conversion region to generate a yellow light beam and direct the yellow light beam to the projection direction.
The red laser light beam is guided to the projection direction and combined with the orange light beam to form red projection light which penetrates through the red light diffusion sheet.
It can be known from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: the rotating wheel is provided with the light combining area, the blue laser beam light combining area forms a first excitation light beam, the first conversion area is excited to generate a yellow light beam, the yellow light beam is reflected and penetrates through the light combining area to form an orange light beam, the orange light beam and the red laser beam are combined to generate red projection light, the projection requirement is met, the orange light beam can increase the brightness of the red laser beam, the selection requirement of the projection requirement and the reduction of the power of the red laser light source is met, the production cost is reduced, and the problem of red laser speckles is solved to a certain extent; through the mutual matching of the first collimating mirror, the first optical filter, the reflecting mirror and the rotating wheel, the light paths of the red laser beam and the blue laser beam form a small loop, the size of the device is reduced, and the cost is further reduced.
Drawings
FIG. 1 is a block diagram of a first embodiment of a laser illumination system;
FIG. 2 is a schematic view of a rotating wheel;
FIG. 3 is a schematic structural view of a fluorescent wheel according to the first embodiment;
fig. 4 is a schematic structural diagram of a color wheel;
FIG. 5 is a block diagram of a second embodiment of a laser illumination system;
FIG. 6 is a schematic structural view of a fluorescent wheel according to a second embodiment;
in the figure, 1-blue laser light source, 2-red laser light source, 3-rotating wheel, 4-fluorescent wheel, 6-color wheel, 31-light combining zone, 32-first penetration zone, 33-reflection zone, 34-second penetration zone, 41-first conversion zone, 42-second conversion zone, 43-transition zone, 44-third conversion zone, 51-first collimating mirror, 52-second collimating mirror, 53-third collimating mirror, F1-first filter, F2-second filter, RJ-mirror, 61-red diffusion sheet, 62-yellow diffusion sheet, 63-blue diffusion sheet, 64-green diffusion sheet, R-red laser light beam, R1-red projection light, B1-blue laser light beam, B2-first excitation light beam, B-color light beam, B, B3-blue projection light, Y-yellow light beam, Y1-yellow projection light, G-green light beam, G1-green projection light, OG-orange light beam.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Referring to fig. 1 to 6, a laser lighting system includes a blue laser light source 1, a red laser light source 2, a rotating wheel 3, a fluorescent wheel 4, a light guide assembly, and a color wheel 6.
The blue laser light source 1 may generate a blue laser beam B1.
The red laser light source 1 can generate a red laser beam R.
The rotating wheel 3 is rotatably disposed on the path of the blue laser beam B1 and the red laser beam R, and includes a light combining region 31, a first penetrating region 32, a reflecting region 33, and a second penetrating region 34 arranged along the contour thereof, the red laser source 2 is turned on when the blue laser source 1 is in the right state to the light combining region 31, the first penetrating region 32 and the second penetrating region 34 can both be penetrated by the blue laser beam B1, and the reflecting region 33 can reflect the blue laser beam B1 and guide the blue laser beam to the projection direction.
The light combining area 31 is coated with a filter film, so that the blue laser beam B1 and the orange beam OG which meet the penetration spectrum of the light combining area penetrate through the filter film, the red laser beam guide R is reflected by the light combining area 32, and the blue laser beam B1 can penetrate through the light combining area to generate a first excitation beam B2.
The fluorescent wheel 4 is rotatably arranged on the path of the first excitation light beam B2 and comprises a first conversion region 41, a second conversion region 42, a transition region 43 and a third conversion region 44 which are arranged along the outline of the fluorescent wheel, wherein the first conversion region 41 is provided with yellow fluorescent powder, and the yellow fluorescent powder can be excited by the first excitation light beam B2 to generate a yellow light beam Y and is guided to the light combining region 31; the second conversion region 42 is provided with yellow phosphor, and the blue laser beam B1 penetrates through the first penetration region 32 to excite the second conversion region 42 to generate a yellow beam Y and is guided to the first penetration region 42; the third converting region 44 is provided with green phosphor, and the blue laser beam B1 penetrates the second penetration region 34 to excite the second converting region 44 to generate a green beam G and direct the green beam G to the second penetration region 34.
The light guide assembly comprises a first collimating mirror 51, a second collimating mirror 52, a first optical filter F1, a second optical filter F2, a reflecting mirror RJ and a third collimating mirror 53, wherein the first collimating mirror 51 and the second collimating mirror 52 are respectively arranged at two sides of the rotating wheel 3; the first filter F1 is arranged on the path of the blue laser beam B1 and the red laser beam R, and can be penetrated by the blue laser beam B1 and the red laser beam B1 and reflect the orange beam OG, the yellow beam Y and the green beam G; the second filter F2 is arranged on the path of the blue laser beam B1 and the red laser beam R and can be penetrated by the blue laser beam B1 and reflect the red laser beam R; the reflecting mirror RJ can emit a blue laser beam B1 and a red laser beam R; the third collimator lens 53 is disposed on the path of the projection direction.
The color wheel 6 is rotatably disposed in the path of the projection direction and includes a red diffusion sheet 61, a yellow diffusion sheet 62, a blue diffusion sheet 63, and a green diffusion sheet 64 along the contour thereof.
When the blue laser light source 1 is opposite to the light combination area 31, the red laser light source 2 generates a red laser beam R, and the red laser beam R is sequentially reflected by the second optical filter F2, penetrates through the first optical filter F1, eccentrically penetrates through the first collimating mirror 51, is reflected by the light combination area 31, eccentrically penetrates through the first collimating mirror 51, penetrates through the first optical filter F1, and is reflected to the projection direction by the reflecting mirror RJ; the blue laser beam B1 sequentially penetrates through the second filter F2, the first filter F1, the first collimating mirror 51 in an eccentric mode, the light combining area 31 and the first conversion area 41 to generate a yellow light beam Y and guide the yellow light beam Y to the light combining area 31; the yellow light beam Y passes through the light combining area 31 to generate an orange light beam OG; the orange light beams OG sequentially penetrate through the first collimating mirror 51, are reflected to the projection direction by the first filter F1 and are combined with the red laser beams R to form red projection light R1; the red projection light R1 sequentially passes through the third collimator lens 53 and the red diffusion sheet 61 to form a red projection light source.
When the blue laser light source 1 is aligned with the first penetration region 32, the red laser light source 2 is turned off; the blue laser beam B1 sequentially penetrates through the second filter F2, penetrates through the first filter F1, eccentrically penetrates through the first collimating mirror 51, penetrates through the first penetration region 32, penetrates through the second collimating mirror 52, excites the second conversion region 42 to generate a yellow beam Y, and is guided to the first penetration region 32; the yellow light beam Y sequentially passes through the first penetration region 32, eccentrically penetrates through the first collimating mirror 51, and is reflected by the first filter F1 to form yellow projection light Y1; the yellow projection light Y1 sequentially passes through the third collimating mirror 53 and the yellow diffusion sheet 62 to form a yellow projection light source.
When the blue laser light source 1 is opposite to the reflecting area 33, the red laser light source 2 is closed; the blue laser beam B1 sequentially penetrates through the second filter F2, the first filter F1, the first collimating mirror 51 in an eccentric penetrating manner, is reflected by the reflecting area 33, penetrates through the first collimating mirror 51 in an eccentric manner, penetrates through the first filter F1 and is reflected by the reflecting mirror RJ to form blue projection light B3; the blue projection light B3 sequentially passes through the third collimating mirror 53 and the blue diffusion sheet 63 to form a blue projection light source.
When the blue laser light source 1 is opposite to the second penetration area 34, the red laser light source 2 is closed; the blue laser beam B1 sequentially passes through the second filter F2, penetrates through the first filter F1, eccentrically penetrates through the first collimating mirror 51, penetrates through the second penetration region 34, penetrates through the second collimating mirror 52, excites the third conversion region 44 to generate a green beam G, and the green beam G is guided to the second penetration region 34; the green light beam G sequentially passes through the second penetration region 34, eccentrically penetrates through the first collimating mirror 51, and is reflected by the first filter F1 to form a green projection light G1, and the green projection light G1 sequentially passes through the third collimating mirror 53 and the green diffusion sheet 64 to form a green projection light source.
The third collimator lens 53 is disposed on a path of the projection direction, and condenses red projection light R1, yellow projection light Y1, blue projection light B3, and green projection light G1, which are necessary for projection.
The red projection light source required by projection is synthesized by the red laser beam R and the orange light beam OG, and the orange light beam OG can improve the brightness of the red projection light R1, so that the red projection light R1 meets the projection requirement and simultaneously reduces the power selection requirement on the red laser light source 2, thereby reducing the cost and solving the problem of red laser speckle to a certain extent.
The second embodiment of the present invention has the same structure as the first embodiment, and the difference is: the fluorescent wheel 4 is rotatably arranged in the path of the first excitation light beam B2, but the fluorescent wheel 4 does not need to rotate synchronously with the rotating wheel 3 and the color wheel 6, the first switching area 41 is circumferentially arranged around the fluorescent wheel 4, and the first switching area 41 is provided with yellow fluorescent light.
When the blue laser light source 1 is opposite to the light combination area 31, the red laser light source 2 generates a red laser beam R, and the red laser beam R is sequentially reflected by the second optical filter F2, penetrates through the first optical filter F1, eccentrically penetrates through the first collimating mirror 51, is reflected by the light combination area 31, eccentrically penetrates through the first collimating mirror 51, penetrates through the first optical filter F1, and is reflected to the projection direction by the reflecting mirror RJ; the blue laser beam B1 sequentially penetrates through the second filter F2, the first filter F1, the first collimating mirror 51 in an eccentric mode, the light combining area 31 and the first conversion area 41 to generate a yellow light beam Y and guide the yellow light beam Y to the light combining area 31; the yellow light beam Y passes through the light combining area 31 to generate an orange light beam OG; the orange light beams OG sequentially penetrate through the first collimating mirror 51, are reflected to the projection direction by the first filter F1 and are combined with the red laser beams R to form red projection light R1; the red projection light R1 sequentially passes through the third collimator lens 53 and the red diffusion sheet 61 to form a red projection light source.
When the blue laser light source 1 is aligned with the first penetration region 32, the red laser light source 2 is turned off; the blue laser beam B1 sequentially penetrates through the second filter F2, penetrates through the first filter F1, eccentrically penetrates through the first collimating mirror 51, penetrates through the first penetration region 32, penetrates through the second collimating mirror 52, excites the first conversion region 41 to generate a yellow beam Y, and is guided to the first penetration region 32; the yellow light beam Y sequentially passes through the first penetration region 32, eccentrically penetrates through the first collimating mirror 51, and is reflected by the first filter F1 to form yellow projection light Y1; the yellow projection light Y1 sequentially passes through the third collimating mirror 53 and the yellow diffusion sheet 62 to form a yellow projection light source.
When the blue laser light source 1 is opposite to the reflecting area 33, the red laser light source 2 is closed; the blue laser beam B1 sequentially penetrates through the second filter F2, the first filter F1, the first collimating mirror 51 in an eccentric penetrating manner, is reflected by the reflecting area 33, penetrates through the first collimating mirror 51 in an eccentric manner, penetrates through the first filter F1 and is reflected by the reflecting mirror RJ to form blue projection light B3; the blue projection light B3 sequentially passes through the third collimating mirror 53 and the blue diffusion sheet 63 to form a blue projection light source.
When the blue laser light source 1 is opposite to the second penetration area 34, the red laser light source 2 is closed; the blue laser beam B1 sequentially passes through the second filter F2, penetrates through the first filter F1, eccentrically penetrates through the first collimating mirror 51, penetrates through the second penetration region 34, penetrates through the second collimating mirror 52, excites the first conversion region 41 to generate a yellow light beam Y, and the yellow light beam Y is guided to the second penetration region 34; the yellow light beam Y sequentially passes through the second penetration region 34, eccentrically penetrates through the first collimating mirror 51, and is reflected by the first filter F1 to form a yellow projection light Y1, and the yellow projection light Y1 sequentially passes through the third collimating mirror 53 and the green diffusion sheet 64 to form a green projection light source.
The third collimator lens 53 is provided on a path in the projection direction, and condenses red projection light R1, yellow projection light Y1, and blue projection light B3 necessary for projection.
The red projection light source required by projection is synthesized by the red laser beam R and the orange light beam OG, and the orange light beam OG can improve the brightness of the red projection light R1, so that the red projection light R1 meets the projection requirement and simultaneously reduces the power selection requirement on the red laser light source 2, thereby reducing the cost and solving the problem of red laser speckle to a certain extent.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.
Claims (10)
1. A laser illumination system, characterized by: the method comprises the following steps: a blue laser light source, a red laser light source, a rotating wheel and a fluorescent wheel,
the blue laser light source can generate a blue laser beam;
the red laser light source can generate a red laser beam, and the red laser beam can be guided to a projection direction;
the rotating wheel is rotatably arranged on the path of the blue laser beam and the path of the red laser beam and comprises a light combining area, and the blue laser beam can penetrate through the light combining area to generate a first excitation beam;
the fluorescent wheel is rotatably arranged on a path of the first excitation light beam, the fluorescent wheel is provided with a first conversion area, yellow fluorescent powder is arranged in the first conversion area, the yellow fluorescent powder can be excited by the first excitation light beam to generate a yellow light beam and guide the yellow light beam to the light combining area, and the yellow light beam penetrates through the light combining area to generate an orange light beam and guide the orange light beam to the projection direction to combine with the red laser light beam to form red projection light.
2. A laser illumination system as claimed in claim 1, characterized in that: the red laser beam eccentrically penetrates through the first collimating mirror, is reflected by the light combining area, and eccentrically penetrates through the first collimating mirror to guide the projection direction; the blue laser beam eccentrically penetrates through the first collimating mirror, penetrates through the light combining area, eccentrically penetrates through the second collimating mirror and excites the first conversion area to generate a yellow light beam in sequence; the yellow light beam penetrates through the second collimating lens, penetrates through the light combining area, penetrates through the first collimating lens, and then is guided to the projection direction to be combined with the red laser beam to form red projection light.
3. A laser illumination system as claimed in claim 2, characterized in that: the light guide assembly further comprises a first optical filter, the first optical filter is arranged on the path of the blue laser beam and the path of the red laser beam, and the first optical filter can be penetrated by the blue laser beam and the red laser beam and reflect the orange laser beam to guide the projection direction.
4. A laser illumination system as claimed in claim 3, characterized in that: the light guide assembly further comprises a reflector, and the red laser beam sequentially penetrates through the first optical filter, eccentrically penetrates through the first collimating mirror, is reflected by the light combining area, eccentrically penetrates through the first collimating mirror, penetrates through the first optical filter, is reflected by the reflector and then is guided to the projection direction.
5. A laser illumination system as claimed in claim 3, characterized in that: the light guide assembly further comprises a second optical filter, the second optical filter is arranged on the path of the blue laser beam and the path of the red laser beam, the blue laser beam sequentially penetrates through the second optical filter and the first optical filter, and the red laser beam is emitted by the second optical filter and guided to penetrate through the first optical filter.
6. A laser illumination system as claimed in claim 3, characterized in that: the light guide assembly further comprises a third collimating mirror, the third collimating mirror is arranged on a path of the projection direction, and the red laser beam is guided to the projection direction to be combined with the orange beam to form red projection light which penetrates through the third collimating mirror.
7. A laser illumination system according to any one of claims 1 to 6, characterized in that: the rotating wheel further comprises a penetrating area and a reflecting area, the penetrating area can be penetrated by the blue laser beams, and the reflecting area can reflect the blue laser beams and guide the blue laser beams to the projection direction.
8. A laser illumination system as claimed in claim 7, characterized in that: the penetration region comprises a first penetration region and a second penetration region, the fluorescent wheel is provided with a second conversion region and a third conversion region, the second conversion region is provided with yellow fluorescent powder, and blue laser beams penetrate through the first penetration region to excite the second conversion region to generate yellow light beams and guide the yellow light beams to the projection direction; the third conversion area is provided with green fluorescent powder, and the blue laser beam penetrates through the second penetration area to excite the third conversion area to generate a green beam and guide the green beam to the projection direction.
9. A laser illumination system as claimed in claim 7, characterized in that: the penetration region comprises a first penetration region and a second penetration region, the first conversion region is circumferentially arranged around the fluorescent wheel contour, and the blue laser beam penetrates through the first penetration region or the second penetration region to excite the first conversion region to generate yellow light beams and guide the yellow light beams to the projection direction.
10. A laser illumination system according to any one of claims 1 to 6, characterized in that: the red laser light beam is guided to the projection direction and combined with the orange light beam to form red projection light which penetrates through the red light diffusion sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921597385.9U CN210270496U (en) | 2019-09-24 | 2019-09-24 | Laser lighting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921597385.9U CN210270496U (en) | 2019-09-24 | 2019-09-24 | Laser lighting system |
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| CN210270496U true CN210270496U (en) | 2020-04-07 |
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| CN201921597385.9U Active CN210270496U (en) | 2019-09-24 | 2019-09-24 | Laser lighting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115951552A (en) * | 2023-03-09 | 2023-04-11 | 深圳市橙子数字科技有限公司 | Light emitting device and light source system |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115951552A (en) * | 2023-03-09 | 2023-04-11 | 深圳市橙子数字科技有限公司 | Light emitting device and light source system |
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Effective date of registration: 20221108 Address after: 344000 Building B7, School Furniture Industrial Park, Nancheng County, Fuzhou City, Jiangxi Province Patentee after: Jiangxi Xingchi Electronic Technology Co.,Ltd. Address before: 362000 no.463 Chonghong street, Quanzhou Economic and Technological Development Zone, Fujian Province Patentee before: Quanzhou Ruichi Intelligent Technology Co.,Ltd. |