CN212160327U - Laser projection light source module device and laser projector - Google Patents
Laser projection light source module device and laser projector Download PDFInfo
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- CN212160327U CN212160327U CN202021069727.2U CN202021069727U CN212160327U CN 212160327 U CN212160327 U CN 212160327U CN 202021069727 U CN202021069727 U CN 202021069727U CN 212160327 U CN212160327 U CN 212160327U
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Abstract
The utility model discloses a laser projection light source module device and a laser projector, which comprises a laser light source group, a beam shrinking lens group, a spot dissipation element, a light path turning element, a first focusing lens group, a wavelength conversion device, a second focusing lens group, a color filter device and a dodging device; the laser light source device provides blue laser; the light path deflection element consists of a first working area and a second working area and is used for deflecting the light path to realize the common light path of all color lights; the first working area is a dichroic mirror, so that the first working area transmits blue light and reflects other colored light, and the second working area is a reflector, so that the second working area reflects all colored light. Compared with the laser projection light source module at present, the utility model discloses a three primary colors light common light path designs, does not need to be a light path of blue light design alone, has reduced even light device's complexity, has reduced the assembly degree of difficulty, has reduced manufacturing cost, has improved the blue light utilization ratio.
Description
Technical Field
The utility model relates to a laser projection shows technical field, especially relates to a laser projection light source module device and laser projector.
Background
Most of the existing laser projectors adopt a scheme that blue laser is used as a projection light source, blue laser emitted by a blue laser irradiates a rotating wavelength conversion device through a lens group and a dichroic mirror, when the blue laser irradiates a fluorescent section on the wavelength conversion device, fluorescent powder can be excited to generate corresponding yellow, green and other fluorescent lights, the excited fluorescent lights are collimated by the lens group and reflected by the dichroic mirror to enter a subsequent system, and when the blue laser irradiates a transparent area of the wavelength conversion device, the blue laser penetrates through a blue light path formed by the wavelength conversion device through a plurality of reflecting mirrors, and the dichroic mirror and red and green light are combined to realize three-primary-color illumination.
In the commonly used scheme, a separate light path needs to be designed for the blue laser, so that the size of the optical machine is increased, the assembly difficulty and the manufacturing cost are increased, and the utilization rate of the blue light is also reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a laser projection light source module device and laser projector to the blue laser of solving current laser projector need design solitary light path, has increased the volume of ray apparatus, also increases the assembly degree of difficulty and manufacturing cost, has also reduced blue light's utilization ratio problem equally.
The utility model adopts the technical proposal that: a laser projection light source module device comprises a laser light source group, a beam shrinking lens group, a spot dissipation element, a light path turning element, a first focusing lens group, a wavelength conversion device, a second focusing lens group, a color filter device and a light uniformizing device;
the laser light source device provides blue laser;
the wavelength conversion device is provided with a reflection section and a wavelength conversion section, and required colored light is obtained by incident blue laser by rotating the wavelength conversion device;
the light path deflection element consists of a first working area and a second working area and is used for deflecting the light path to realize the common light path of all color lights;
the first working area is a dichroic mirror, so that the first working area transmits blue light and reflects other colored light, and the second working area is a reflector, so that the second working area reflects all colored light;
the blue laser emitted by the laser light source group is collimated and condensed by the condensing lens group, speckles are eliminated by the speckle eliminating element, the blue laser only passes through the first working area and then enters the wavelength conversion device after passing through the first focusing lens group, when the blue laser irradiates the reflection section of the wavelength conversion device, the reflected blue laser passes through the first focusing lens group and then is reflected only in the second working area, and the blue laser enters the dodging device after passing through the second focusing lens group and the color filter device; when the blue laser irradiates the wavelength conversion section of the wavelength conversion device, the laser enters the dodging device after passing through the first focusing lens group, then being reflected on the first working area and the second working area and passing through the second focusing lens group and the wavelength conversion device.
Preferably, an included angle between the optical path turning element and an optical axis of the beam reduction lens group is 45 degrees.
Preferably, a boundary between the first working region and the second working region is located on the same horizontal plane as an axis of the first focusing lens group, and a plane formed by the boundary between the first working region and the second working region and the axis of the second focusing lens group is perpendicular to the horizontal plane.
Preferably, the area ratio of the first working area to the second working area is between 1:5 and 5: 1.
Preferably, the wavelength conversion device is located at the focal plane of the first focusing lens group.
Preferably, the reflection section is a plane mirror for reflecting blue laser light, and the wavelength conversion section includes a green fluorescence section and one or both of a red fluorescence section and a yellow fluorescence section.
Preferably, the color filter device includes a plurality of light-transmitting regions including a blue light-transmitting region and a green light-transmitting region, and further includes one or both of a red light-transmitting region and a yellow light-transmitting region.
Preferably, the rotation of the color filter means and the wavelength conversion means is controlled by a driving system, the color filter means and the wavelength conversion means are rotated in synchronization, a blue light transmission region of the color filter means is positioned below the dodging means when the laser light is irradiated on the reflection section, and the color filter means is rotated to a light transmission region of a corresponding color when the laser light is irradiated on the green light fluorescence section or the yellow light fluorescence section or the red light fluorescence section on the wavelength conversion section.
A laser projector comprises the laser projection light source module device.
The utility model has the advantages that: compared with the laser projection light source module at present, the utility model discloses a three primary colors light common light path designs, does not need to be a light path of blue light design alone, has reduced even light device's complexity, has reduced the assembly degree of difficulty, has reduced manufacturing cost, has improved the blue light utilization ratio.
Drawings
Fig. 1 is a schematic structural view of a laser projection light source module apparatus disclosed in the present invention;
fig. 2 is a schematic structural diagram of an optical path deflecting element in a first embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a first wavelength conversion device disclosed in the present invention;
fig. 4 is a schematic structural diagram of a second wavelength conversion device disclosed in the present invention;
fig. 5 is a schematic structural diagram of a third wavelength conversion device disclosed in the present invention.
Reference numerals: 1-laser light source group; 2-a converging lens group; 3-a speckle dissipating device; 4-optical path deflection element, 41 a-first working area, 41 b-second working area, 5-first focusing lens group; 6-wavelength conversion device, 6 a-reflection section, 6 b-green light fluorescence section, 6 c-yellow light fluorescence section, 6 d-red light fluorescence section; 7-a second focusing lens group; 8-color filtering means; 9-light homogenizing device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1, a laser projection light source module device includes a laser light source group 1, a beam reduction lens group 2, a speckle dispersing device 3, a light path turning element 4, a first focusing lens group 5, a wavelength conversion device 6, a second focusing lens group 7, a color filter device 8, and a dodging device 9.
The optical path deflecting element 4 is made of colorless transparent plastic or colorless glass, the optical path deflecting element 4 includes a first working area 41a and a second working area 41b, the first working area 41a is a Dichroic Mirror (Dichroic Mirror) to transmit blue light and reflect other color light, and the second working area 41b is a reflecting Mirror to reflect all color light.
The boundary between the first working region 41a and the second working region 41b is located on the same horizontal plane as the axis of the first focusing lens group 5, and the plane formed by the boundary between the first working region 41a and the second working region 41b and the axis of the second focusing lens group 7 is perpendicular to the horizontal plane.
The wavelength conversion means 6 is composed of a reflection section 6a and a wavelength conversion section, and the wavelength conversion section is composed of three sections of a green light fluorescence section 6b and a yellow light fluorescence section 6c as shown in fig. 3, or composed of three sections of a reflection section 6a, a green light fluorescence section 6b and a red light fluorescence section 6d as shown in fig. 4, or composed of a reflection section 6a, a green light fluorescence section 6b, a yellow light fluorescence section 6c, a red light fluorescence section 6d and four sections as shown in fig. 5. The reflecting section 6a is a flat mirror for reflecting the blue laser light. The color filter device 8 is composed of a plurality of light transmission regions with different colors, the material of the light transmission regions is transparent glass or transparent plastic, the color filter device 8 comprises a blue light transmission region, a green light transmission region and one or two of a red light transmission region and a yellow light transmission region, the color type on the color filter device 8 is consistent with the color type on the wavelength conversion section and is provided with a blue light transmission region. The rotation of the color filter means 8 and the wavelength conversion means 6 is controlled by a driving system, and the color filter means 8 and the wavelength conversion means 6 are rotated in synchronization, and when the laser light is irradiated to the reflection section 6a, a blue light-transmitting region of the color filter means 8 is positioned below the light unifying means 9, and when the laser light is irradiated to the wavelength conversion section, the color filter means is rotated to a light-transmitting region of a corresponding color.
Blue laser emitted by the laser light source group 1 is collimated and condensed by the condensing lens group 2, is eliminated by the speckle eliminating device 3, and only passes through the first working area 41a, passes through the first focusing lens group 5 and enters the wavelength conversion device 6; when the blue laser light is irradiated on the reflection section 6a, the reflected blue laser light is reflected only on the second operation region 41 b. When blue laser irradiates the wavelength conversion device 6, the wavelength conversion device 6 is rotated to respectively excite fluorescent powder on the green fluorescent section 6b, the yellow fluorescent section 6c and the red fluorescent section 6d to emit corresponding green fluorescent light, yellow fluorescent light and red fluorescent light, the excited fluorescent light is collimated by the first focusing lens group 5, and the laser is reflected on the first working area 41a and the second working area 41 b; the reflected laser light is focused on the color filter 8 through the second focusing lens group 7, and enters the dodging device 9 in a common light path.
The wavelength conversion device 6 is located at the focal plane of the first focusing lens group 5 in this embodiment. The area ratio of the first working area 41a and the second working area 41b of the optical path folding element 4 is between 1:5 and 5: 1. The optical axis angle between the optical path deflecting element 4 and the beam shrinking lens group 2 is 45 degrees.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a laser projection light source module device which characterized in that: the device comprises a laser light source group, a beam shrinking lens group, a spot dissipation element, a light path turning element, a first focusing lens group, a wavelength conversion device, a second focusing lens group, a color filter device and a light uniformizing device;
the laser light source device provides blue laser;
the wavelength conversion device is provided with a reflection section and a wavelength conversion section, and required colored light is obtained by incident blue laser by rotating the wavelength conversion device;
the light path deflection element consists of a first working area and a second working area and is used for deflecting the light path to realize the common light path of all color lights;
the first working area is a dichroic mirror, so that the first working area transmits blue light and reflects other colored light, and the second working area is a reflector, so that the second working area reflects all colored light;
the blue laser emitted by the laser light source group is collimated and condensed by the condensing lens group, speckles are eliminated by the speckle eliminating element, the blue laser only passes through the first working area and then enters the wavelength conversion device after passing through the first focusing lens group, when the blue laser irradiates the reflection section of the wavelength conversion device, the reflected blue laser passes through the first focusing lens group and then is reflected only in the second working area, and the blue laser enters the dodging device after passing through the second focusing lens group and the color filter device; when the blue laser irradiates the wavelength conversion section of the wavelength conversion device, the laser enters the dodging device after passing through the first focusing lens group, then being reflected on the first working area and the second working area and passing through the second focusing lens group and the wavelength conversion device.
2. The laser projection light source module device of claim 1, wherein: and an included angle between the optical path deflection element and the optical axis of the beam shrinking lens group is 45 degrees.
3. The laser projection light source module device of claim 2, wherein: the boundary of the first working area and the second working area and the axis of the first focusing lens group are positioned on the same horizontal plane, and the plane formed by the boundary of the first working area and the second working area and the axis of the second focusing lens group is vertical to the horizontal plane.
4. The laser projection light source module device of claim 3, wherein: the area ratio of the first working area to the second working area is 1:5 to 5: 1.
5. The laser projection light source module device of claim 1, wherein: the wavelength conversion device is located at a focal plane of the first focusing lens group.
6. The laser projection light source module device of claim 1, wherein: the reflecting section is a plane mirror and is used for reflecting blue laser, and the wavelength conversion section comprises a green light fluorescence section and one or two of a red light fluorescence section and a yellow light fluorescence section.
7. The laser projection light source module device of claim 6, wherein: the color filter device includes a plurality of light-transmitting regions including a blue light-transmitting region and a green light-transmitting region, and further includes one or both of a red light-transmitting region and a yellow light-transmitting region.
8. The laser projection light source module device of claim 7, wherein: the rotation of the color filter and the wavelength conversion device is controlled by a driving system, the color filter and the wavelength conversion device rotate synchronously, when the laser irradiates on the reflection section, the blue light transmission area of the color filter is positioned below the dodging device, and when the laser irradiates on the green light fluorescence section or the yellow light fluorescence section or the red light fluorescence section on the wavelength conversion section, the color filter rotates to the light transmission area of the corresponding color.
9. A laser projector comprising the laser projection light source module apparatus of any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021069727.2U CN212160327U (en) | 2020-06-11 | 2020-06-11 | Laser projection light source module device and laser projector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021069727.2U CN212160327U (en) | 2020-06-11 | 2020-06-11 | Laser projection light source module device and laser projector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031381A (en) * | 2021-03-05 | 2021-06-25 | 青岛海信激光显示股份有限公司 | Light source assembly and projection equipment |
| CN113311654A (en) * | 2021-06-18 | 2021-08-27 | 青岛海信激光显示股份有限公司 | Projection light source and projection apparatus |
| WO2022143318A1 (en) * | 2020-12-31 | 2022-07-07 | 万民 | Light emitting device |
| WO2023045882A1 (en) * | 2021-09-27 | 2023-03-30 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN116794919A (en) * | 2023-08-28 | 2023-09-22 | 宜宾市极米光电有限公司 | Light source system and projection equipment |
| US11768428B2 (en) | 2020-06-22 | 2023-09-26 | Hisense Laser Display Co., Ltd | Laser source and laser projection apparatus |
-
2020
- 2020-06-11 CN CN202021069727.2U patent/CN212160327U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11768428B2 (en) | 2020-06-22 | 2023-09-26 | Hisense Laser Display Co., Ltd | Laser source and laser projection apparatus |
| WO2022143318A1 (en) * | 2020-12-31 | 2022-07-07 | 万民 | Light emitting device |
| CN113031381A (en) * | 2021-03-05 | 2021-06-25 | 青岛海信激光显示股份有限公司 | Light source assembly and projection equipment |
| CN113311654A (en) * | 2021-06-18 | 2021-08-27 | 青岛海信激光显示股份有限公司 | Projection light source and projection apparatus |
| WO2023045882A1 (en) * | 2021-09-27 | 2023-03-30 | 青岛海信激光显示股份有限公司 | Laser projection device |
| CN116794919A (en) * | 2023-08-28 | 2023-09-22 | 宜宾市极米光电有限公司 | Light source system and projection equipment |
| CN116794919B (en) * | 2023-08-28 | 2023-12-12 | 宜宾市极米光电有限公司 | Light source system and projection equipment |
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