CN212515328U - Wavelength conversion wheel disc, wavelength conversion device, light source device and projection equipment - Google Patents
Wavelength conversion wheel disc, wavelength conversion device, light source device and projection equipment Download PDFInfo
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- CN212515328U CN212515328U CN202021575054.8U CN202021575054U CN212515328U CN 212515328 U CN212515328 U CN 212515328U CN 202021575054 U CN202021575054 U CN 202021575054U CN 212515328 U CN212515328 U CN 212515328U
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Abstract
The utility model provides a wavelength conversion rim plate, wavelength conversion device, light source device and projection equipment, the wavelength conversion rim plate includes: the device comprises a substrate, wherein a wavelength conversion region to be subjected to color filtering is arranged on the surface of the substrate and is used for converting exciting light into stimulated light and emitting a converted light beam outwards; a first color filtering element corresponding to the wavelength conversion region to be filtered is arranged on the substrate; the first color filter element is used for receiving the converted light beam, reflecting the excitation light in the converted light beam and transmitting the excited light in the converted light beam.
Description
Technical Field
The utility model belongs to the technical field of the laser equipment technique and specifically relates to a wavelength conversion rim plate, wavelength conversion device, light source device and projection equipment are related to.
Background
As shown in fig. 1, the conventional semiconductor laser includes a blue excitation light emitter 110, a wavelength conversion device, a reflection assembly 130, a light equalizing member 140, and a color filter device 150, wherein the wavelength conversion device includes a substrate 121 and a driving motor 122, a plurality of different wavelength conversion material regions including a red wavelength conversion material region are disposed on a surface of the substrate, the substrate is connected to an upper end of the driving motor, and the color filter device is connected to a lower end of the driving motor, and the color filter device is aligned with the red wavelength conversion material region up and down, and is driven by the driving motor to rotate synchronously with the substrate.
The exciting light emitted by the blue exciting light emitter passes through the middle hole of the reflecting component and then falls on the wavelength conversion device, the red light wavelength conversion material on the wavelength conversion device converts the exciting light into excited light, the excited light is reflected by the reflecting component and irradiates on the light equalizing component, and the light beam emitted from the light outlet of the light equalizing component passes through the color filter device, so that the exciting light in the light beam can be filtered, and the influence of the exciting light on the color of the excited light is reduced.
In the existing semiconductor blue laser, a color filter device and a substrate are both driven by a driving motor, and in order to ensure that the color filter device and the substrate can stably rotate during production and processing. The filter device and the substrate need to be weighted separately so that the driving shaft of the driving motor is connected to the center of gravity of the filter device and the substrate, thereby causing the problems of laser, increased mass, troublesome processing and high production cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wavelength conversion rim plate, wavelength conversion device, light source device and projection equipment to when having alleviated current wavelength conversion device production, the technical problem of trouble, quality increase, the high problem of manufacturing cost is adjusted to the counter weight.
In a first aspect, an embodiment of the present invention provides a wavelength conversion wheel disc, the wavelength conversion wheel disc includes: the device comprises a substrate, wherein a wavelength conversion region to be subjected to color filtering is arranged on the surface of the substrate and is used for converting exciting light into stimulated light and emitting a converted light beam outwards;
a first color filtering element corresponding to the wavelength conversion region to be filtered is arranged on the substrate; the first color filter element is used for receiving the converted light beam, reflecting the excitation light in the converted light beam and transmitting the excited light in the converted light beam.
Further, the wavelength conversion region to be filtered and the first color filtering element are both arc-shaped, and the wavelength conversion region to be filtered comprises a first starting edge and a first ending edge along the rotation direction of the substrate; the first color filter element comprises a second starting edge and a second ending edge along the rotation direction of the substrate; the central angle formed by the first starting edge and the first ending edge is the same as the degree of the central angle formed by the second starting edge and the second ending edge;
the wavelength conversion region to be filtered comprises a first starting edge and a first ending edge along the rotation direction of the substrate, wherein the central angle formed by the first starting edge and the first ending edge and the central angle formed by the second starting edge and the second ending edge are symmetrical relative to the rotation center of the substrate; alternatively, a central angle formed by the first starting edge and the first ending edge coincides with a central angle formed by the second starting edge and the second ending edge in the rotation direction of the substrate.
Further, a yellow or orange conversion material is fully distributed on the wavelength conversion region to be filtered;
the wavelength conversion region to be filtered is covered with a second color filtering element, and the second color filtering element can transmit the excited light and reflect visible light in the middle of the wavelength of the excited light and the wavelength of the excited light.
Further, the wavelength conversion region to be filtered is covered with red wavelength conversion material.
In a second aspect, an embodiment of the present invention provides a wavelength conversion device, which includes a driving mechanism and the above-mentioned wavelength conversion wheel disc;
the driving mechanism is connected with the wavelength conversion wheel disc and used for driving the wavelength conversion wheel disc to rotate.
In a third aspect, an embodiment of the present invention provides a light source device, which includes the wavelength conversion device.
Further, the light source device further comprises an excitation light emitter for providing excitation light to the wavelength conversion device, and a reflection component for reflecting the conversion light beam emitted outward from the wavelength conversion region to be color-filtered onto the first color filter element.
Furthermore, the reflection assembly comprises a light reflecting bowl, and a through hole is formed in the bottom of the light reflecting bowl and is used for enabling exciting light emitted by the exciting light emitter to irradiate the wavelength conversion region to be filtered;
the reflector has two focal points, one of which is located in the rotational path of the wavelength conversion region to be color filtered and the other of which is located in the rotational path of the first color filter element.
Further, the reflection assembly comprises a first reflection mirror and a second reflection mirror, wherein the first reflection mirror is used for receiving the converted light beam emitted by the wavelength conversion device and reflecting the converted light beam to the second reflection mirror;
the second reflector is used for receiving the converted light beam reflected by the first reflector and reflecting the converted light beam to the first color filter element.
In a fourth aspect, an embodiment of the present invention provides a projection apparatus, which includes the above-mentioned light source device.
Compared with the prior art, the embodiment of the utility model provides a wavelength conversion rim plate's advantage lies in:
in the wavelength conversion wheel disc provided by the embodiment of the utility model, the wavelength conversion area to be filtered and the first color filtering element corresponding to the wavelength conversion area are arranged on the substrate, so that when the wavelength conversion wheel disc is produced and processed, the center of gravity of the whole wavelength conversion wheel disc can be uniformly adjusted, and the processing difficulty is reduced during processing; simultaneously, compare need carry out the counter weight to base plate and color filter device simultaneously among the prior art, this application only need to wavelength conversion rim plate whole carry on unified counter weight in order to satisfy its centrobaric position requirement can, can reduce wavelength conversion device's quality, reduction in production cost.
The embodiment of the utility model provides a wavelength conversion device, light source device and projection equipment, because the utility model provides a wavelength conversion device, light source device and projection equipment have quoted foretell wavelength conversion device, so, the embodiment of the utility model provides a wavelength conversion device, light source device and projection equipment also possess wavelength conversion device's advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art laser;
fig. 2 is a schematic view of a first wavelength conversion wheel according to an embodiment of the present invention;
fig. 3 is a schematic view of a second wavelength conversion wheel according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a third wavelength conversion wheel according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a fourth wavelength conversion wheel according to an embodiment of the present invention;
fig. 6 is a schematic view of a fifth wavelength conversion wheel according to an embodiment of the present invention;
fig. 7 is a first light source device according to an embodiment of the present invention;
fig. 8 is a second light source device according to an embodiment of the present invention;
fig. 9 is a third light source device according to an embodiment of the present invention.
Icon: 110-an excitation light emitter; 121-a substrate; 122-a drive motor; 130-a reflective component; 140-a light homogenizing member; 150-color filtering means; 210-red wavelength conversion region; 220-green wavelength conversion region; 230-yellow wavelength conversion region; 240-blue light region; 300-a first color filter element; 400-a second color filter element; 510-a light reflecting bowl; 521-a first mirror; 522-a second mirror; 523-third mirror.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 2-6, the wavelength conversion wheel disc provided by the embodiment of the present invention includes: the wavelength conversion device comprises a substrate 121, wherein a wavelength conversion region to be filtered is arranged on the surface of the substrate 121, when in use, excitation light emitted by an excitation light emitter 110 can irradiate the wavelength conversion region to be filtered of the wavelength conversion wheel, the wavelength conversion region is full of wavelength conversion materials, the wavelength conversion region to be filtered can be full of red wavelength conversion materials, the excitation light is converted into stimulated light and emits conversion light beams outwards, and because the conversion rate of the wavelength conversion materials is not 100%, the conversion light beams output from the wavelength conversion wheel do not only include the stimulated light, but also include the excitation light, and the excitation light can affect the color of the stimulated light. The substrate 121 is provided with a first color filter 300 corresponding to the wavelength conversion region to be color filtered, in the prior art, the reflection assembly 130 may be used to reflect the converted light beam so that the converted light beam irradiates the first color filter 300, and the first color filter 300 receives the converted light beam, reflects the excitation light in the converted light beam and transmits the stimulated light in the converted light beam, thereby obtaining a higher-quality stimulated light beam.
In the wavelength conversion wheel disc provided by the embodiment of the utility model, the wavelength conversion area to be filtered and the first color filtering element 300 corresponding to the wavelength conversion area are arranged on the substrate 121, so that when the wavelength conversion wheel disc is produced and processed, the center of gravity of the whole wavelength conversion wheel disc can be uniformly adjusted, and the processing difficulty is reduced during processing; simultaneously, compare in prior art need carry out the counter weight to base plate 121 and color filter device 150 simultaneously, this application only need to wavelength conversion rim plate whole carry on unified counter weight in order to satisfy its centrobaric position requirement can, can reduce wavelength conversion device's quality, reduction in production cost.
The wavelength conversion region to be color filtered and the first color filter element 300 are both arc-shaped, and the wavelength conversion region to be color filtered includes a first starting edge and a first ending edge along the rotation direction of the substrate 121; in the rotation direction of the substrate 121, the first color filter 300 includes a second start edge and a second end edge; the central angle formed by the first starting edge and the first ending edge is the same as the central angle formed by the second starting edge and the second ending edge in degrees.
The wavelength conversion wheel is mounted on the wavelength conversion device and is driven to rotate by a drive motor 122. The wavelength conversion region to be filtered on the wheel disc also rotates along with the wheel disc, and the wheel disc is also provided with a wavelength conversion region without color filtering, for example, the excitation light emitter 110 matched with the wavelength conversion device in use is a blue light emitter, the wavelength conversion region to be filtered on the wavelength conversion wheel disc is a red light wavelength conversion region 210, and the wavelength conversion region without color filtering can be a green light wavelength conversion region 220, a yellow light wavelength conversion region 230 (the yellow light wavelength conversion region 230 can be absent) and a blue light region 240, wherein the green light wavelength conversion region 220 is full of green light wavelength conversion material, the yellow light wavelength conversion region 230 is full of yellow light wavelength conversion material, and the blue light region 240 only plays a role of reflection because the excitation light is blue light. The red light wavelength conversion region 210, the green light wavelength conversion region 220, the yellow light wavelength conversion region 230 and the blue light region 240 are connected end to end, and the arrangement of the different regions belongs to the prior art.
The wavelength conversion region to be color-filtered includes a first start edge and a first end edge along a rotation direction of the substrate 121, and a central angle formed by the first start edge and the first end edge and a central angle formed by the second start edge and the second end edge are symmetrical with respect to a rotation center of the substrate 121; alternatively, a central angle formed by the first starting edge and the first ending edge coincides with a central angle formed by the second starting edge and the second ending edge in the rotation direction of the substrate 121.
As shown in fig. 2 and 3, the reflection assembly 130 according to the related art may allow the first color filter 300 to be disposed at the opposite side or the same side of the wavelength conversion region to be color filtered, the light path design is simpler, and the reflection assembly 130 used is also less costly.
As shown in fig. 4 and 5, when the light emitted by the excitation light emitter 110 is blue light and the wavelength conversion region to be filtered is covered with a yellow or orange conversion material, the target excited light is red light, and the converted light beam is doped with other color stray light besides the blue light and the red light. In order to reduce the parasitic light from being irradiated onto the first color filter, the wavelength conversion region to be color-filtered is covered with the second color filter 400, and the second color filter 400 does not block the excitation light and the stimulated light, i.e., can transmit the blue light and the red light, but can reflect the visible light in the middle of the excitation light wavelength and the stimulated light wavelength, so that the parasitic light in the converted light beam can be reduced.
As shown in fig. 6, each wavelength conversion region is a circular arc, and a plurality of wavelength conversion regions may surround a circular ring, wherein a plurality of wavelength conversion regions to be filtered may correspond to the plurality of wavelength conversion regions, and a plurality of first color filter elements 300 may also be provided and correspond to one another. Further, the number of the second color filter 400 may be plural.
The wavelength converting regions to be filtered may be covered with a red wavelength converting material, thus eliminating the need for a second color filter element 400 on the wavelength converting regions to be filtered.
The first color filter 300 may be connected to the substrate 121 by an adhesive, or the first color filter 300 and the substrate 121 may be integrally formed.
The first color filter 300 may be located on the outer side of the circular substrate 121 in the circumferential direction, or a mounting hole may be formed in the substrate 121 through the upper and lower surfaces thereof, and the first color filter 300 may be fitted into the mounting hole.
The embodiment of the utility model provides a wavelength conversion device, wavelength conversion device includes actuating mechanism and foretell wavelength conversion rim plate; the driving mechanism, which may be a driving motor 122, is connected to the wavelength conversion wheel and configured to drive the wavelength conversion wheel to rotate. Because the embodiment of the utility model provides a production degree of difficulty of wavelength conversion rim plate has reduced, and weight has reduced, and manufacturing cost has reduced, so, wavelength conversion device also has foretell advantage.
An embodiment of the utility model provides a pair of light source device, light source device includes foretell wavelength conversion device.
The light source device further comprises an excitation light emitter 110 and a reflection assembly 130, the excitation light emitter 110 being configured to provide excitation light to the wavelength conversion device, the reflection assembly 130 being configured to reflect the converted light beam emitted out of the wavelength conversion region to be color filtered onto the first color filter element 300.
The laser emitter may be a blue laser emitter, the reflection assembly 130 is configured to reflect the converted light beam emitted by the wavelength conversion device to the first color filter 300, the excitation light in the converted light beam passing through the first color filter 300 may be filtered, and the quality of the stimulated light emitted by the light source device is improved.
As shown in fig. 7, in an embodiment of the present invention, the reflection assembly 130 may include a light reflecting bowl 510, and a through hole is formed in a bottom of the light reflecting bowl 510 for allowing the excitation light emitted by the excitation light emitter 110 to irradiate the wavelength conversion region to be color filtered; the light reflecting bowl 510 has two focal points, one of which is located in the rotational path of the wavelength converting region to be colour filtered and the other of which is located in the rotational path of the first colour filter element 300.
The excitation light emitter 110 and the wavelength conversion device are respectively located at two sides of the light reflecting bowl 510, and the bowl mouth of the light reflecting bowl 510 faces the wavelength conversion device. The first color filter element 300 on the wavelength conversion wheel is on the same side as the wavelength conversion region to be color filtered, one of the focal points on the light reflecting bowl 510 is located on the rotation path of the wavelength conversion region to be color filtered, and the other focal point is located on the rotation path of the first color filter element 300. The wavelength conversion wheel in fig. 7 may be the wavelength conversion wheel shown in fig. 3 and 5, among others.
In another embodiment of this embodiment, as shown in fig. 8 and 9, the reflection assembly 130 includes a first mirror 521 and a second mirror 522, the first mirror 521 is used for receiving the converted light beam emitted from the wavelength conversion device and reflecting the converted light beam to the second mirror 522; the second mirror 522 is configured to receive the converted light beam reflected by the first mirror 521 and reflect the converted light beam to the first color filter 300.
In this embodiment the first color filtering element 300 on the wavelength conversion wheel and the wavelength converting region to be color filtered are on opposite sides and are diagonally located. The laser light emitted from the excitation light emitter 110 is reflected twice and then irradiated onto the first color filter 300. Wherein the number of first color filter elements 300 on the wavelength conversion wheel in this embodiment may be two, as shown in fig. 6.
The reflection assembly 130 further includes a third mirror 523, the first mirror 521 may be a dichroic mirror, and the first mirror 521 may reflect the excitation light and transmit the received laser light. The excitation light emitted from the excitation light emitter may be irradiated onto the wavelength conversion device through the first reflecting mirror 521, and the converted light beam emitted from the wavelength conversion device is reflected by the first reflecting mirror 521 and the third reflecting mirror 523 to the second reflecting mirror 522 and finally irradiated onto the first color filter 300.
The light source device is further provided with a light uniforming member 140 having a light uniforming effect, and the light uniforming member 140 may be disposed at a light emitting side of the first color filter 300.
An embodiment of the utility model provides a pair of projection equipment, projection equipment includes foretell light source device.
The projection equipment comprises an optical-mechanical system, and the light source device provides a light source for the optical-mechanical system.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A wavelength conversion wheel, comprising: a substrate (121), wherein a wavelength conversion region to be filtered is arranged on the surface of the substrate (121), and is used for converting exciting light into stimulated light and emitting a converted light beam outwards;
a first color filtering element (300) corresponding to the wavelength conversion region to be filtered is arranged on the substrate (121); the first color filter (300) is configured to receive the converted light beam, reflect excitation light in the converted light beam, and transmit stimulated light in the converted light beam.
2. A wavelength converting wheel according to claim 1, characterized in that the wavelength converting regions to be filtered and the first color filtering element (300) are both circular arc shaped, the wavelength converting regions to be filtered comprising a first starting edge and a first ending edge in the direction of rotation of the substrate (121); -the first color filter element (300) comprises a second starting edge and a second ending edge in a direction of rotation of the substrate (121); the central angle formed by the first starting edge and the first ending edge is the same as the degree of the central angle formed by the second starting edge and the second ending edge;
the central angle formed by the first starting edge and the first ending edge and the central angle formed by the second starting edge and the second ending edge are symmetrical relative to the rotation center of the substrate (121); alternatively, a central angle formed by the first starting edge and the first ending edge coincides with a central angle formed by the second starting edge and the second ending edge along the rotation direction of the substrate (121).
3. A wavelength conversion wheel according to claim 1, wherein the wavelength conversion regions to be colour filtered are interspersed with a yellow or orange conversion material;
the wavelength conversion region to be filtered is covered with a second color filter element (400), and the second color filter element (400) can transmit the excited light and reflect visible light in the middle of the wavelength of the excited light and the wavelength of the excited light.
4. A wavelength conversion wheel according to claim 1, wherein the wavelength conversion regions to be colour filtered are interspersed with red wavelength conversion material.
5. A wavelength conversion device comprising a drive mechanism and a wavelength conversion disk according to any one of claims 1 to 4;
the driving mechanism is connected with the wavelength conversion wheel disc and used for driving the wavelength conversion wheel disc to rotate.
6. A light source device characterized by comprising the wavelength conversion device according to claim 5.
7. A light source device according to claim 6, further comprising an excitation light emitter (110) for providing excitation light to the wavelength conversion device and a reflection assembly (130), the reflection assembly (130) being adapted to reflect the converted light beam emitted out of the wavelength conversion region to be color filtered onto the first color filter element (300).
8. The light source device according to claim 7, wherein the reflection assembly (130) comprises a light reflecting bowl (510), a bottom of the light reflecting bowl (510) is provided with a through hole for irradiating the excitation light emitted by the excitation light emitter (110) onto the wavelength conversion region to be color filtered;
the light-reflecting bowl (510) has two focal points, one of which is located in the rotational path of the wavelength conversion region to be color filtered and the other of which is located in the rotational path of the first color-filtering element (300).
9. The light source device according to claim 7, wherein the reflection assembly (130) comprises a first mirror (521) and a second mirror (522), the first mirror (521) being configured to receive the converted light beam emitted by the wavelength conversion device and reflect the converted light beam to the second mirror (522);
the second mirror (522) is used for receiving the converted light beam reflected by the first mirror (521) and reflecting the converted light beam to the first color filter (300).
10. A projection device, characterized in that the projection device comprises a light source arrangement according to any one of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021575054.8U CN212515328U (en) | 2020-07-31 | 2020-07-31 | Wavelength conversion wheel disc, wavelength conversion device, light source device and projection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021575054.8U CN212515328U (en) | 2020-07-31 | 2020-07-31 | Wavelength conversion wheel disc, wavelength conversion device, light source device and projection equipment |
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| CN212515328U true CN212515328U (en) | 2021-02-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117930575A (en) * | 2024-03-21 | 2024-04-26 | 宜宾市极米光电有限公司 | Optical system and projection apparatus |
| CN117950260A (en) * | 2024-03-21 | 2024-04-30 | 宜宾市极米光电有限公司 | Optical system and projection device |
-
2020
- 2020-07-31 CN CN202021575054.8U patent/CN212515328U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117930575A (en) * | 2024-03-21 | 2024-04-26 | 宜宾市极米光电有限公司 | Optical system and projection apparatus |
| CN117950260A (en) * | 2024-03-21 | 2024-04-30 | 宜宾市极米光电有限公司 | Optical system and projection device |
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