CN219533605U - Light source system and projection equipment - Google Patents
Light source system and projection equipment Download PDFInfo
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- CN219533605U CN219533605U CN202223167520.0U CN202223167520U CN219533605U CN 219533605 U CN219533605 U CN 219533605U CN 202223167520 U CN202223167520 U CN 202223167520U CN 219533605 U CN219533605 U CN 219533605U
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Abstract
The utility model relates to the technical field of display and discloses a light source system and projection equipment, wherein the light source system comprises a light source module, a light splitting and combining component, a wavelength conversion element, a light combining element and a light homogenizing element, wherein first target color light and/or second target color light generated by the light source module are/is emitted into the light combining element along a first light path through the light splitting and combining component, and are emitted into the light homogenizing element through the light combining element for light homogenizing; the second target color light generated by the light source module is emitted into the wavelength conversion element along the second light path through the light splitting and combining component, the wavelength conversion element is excited to generate third target color light, and the third target color light generated by the wavelength conversion element is emitted into the light homogenizing element through the light combining element to perform light homogenizing. The utility model divides the light beam generated by the light source module into two paths, one path of light beam can be used as the emergent light of the light source system after being processed, and the other path of light beam is used for exciting the wavelength conversion element to generate stimulated luminescence; therefore, the utilization rate of the light source module can be improved, and the brightness of the light source system can be improved.
Description
Technical Field
The present utility model relates to the field of projection display technologies, and in particular, to a light source system and a projection device.
Background
In projection display products, the light source system is a very important component, and its function is to convert light rays of different colors, different angular distributions, different brightness and different shapes into a uniform spot of light that irradiates the active area of the display chip.
In the field of projection display, conventional bulbs have not been adopted due to their own defects, and novel light sources such as LEDs, phosphors, and lasers have been increasingly becoming the main stream of light sources for projection display because they exhibit excellent characteristics in terms of brightness, color, lifetime, energy consumption, and the like. In these new light source technologies, it is difficult for LED light sources to achieve high brightness, while laser light sources suffer from speckle. Therefore, how to realize high-quality image quality with high brightness is a problem to be solved.
Disclosure of Invention
The utility model provides a light source system which can be used for projection equipment, can improve the brightness of the light source system, and has simple light path and compact structure.
In a first aspect, the present utility model provides a light source system, including a light source module, a light splitting and combining component, a wavelength conversion element, a light combining element, and a light homogenizing element, wherein:
the first target color light and/or the second target color light generated by the light source module are/is emitted into the light combining element along the first light path through the light splitting and combining component, and are emitted into the light homogenizing element through the light combining element to perform light homogenization;
the second target color light generated by the light source module is emitted into the wavelength conversion element along the second light path through the light splitting and combining component, the wavelength conversion element is excited to generate third target color light, and the third target color light generated by the wavelength conversion element is emitted into the light homogenizing element through the light combining element to perform light homogenizing.
In some embodiments, the light splitting and combining assembly includes a first light splitting and combining element and a dynamic element, the dynamic element including a first region and a second region;
when the light source module generates first target color light, the first area of the dynamic element is positioned on the light emitting path of the light source module, and the first target color light generated by the light source module is transmitted through the first area and then enters the first light splitting and combining element along the first light path;
when the light source module generates second target color light, the second area of the dynamic element is positioned on the light emitting path of the light source module, and the second target color light generated by the light source module is reflected by the second area and then enters the wavelength conversion element along the second light path;
when the light source module generates second target color light, the first area of the dynamic element is positioned on the light emitting path of the light source module, and the second target color light generated by the light source module is transmitted through the first area and then enters the first light splitting and combining element along the first light path.
In some embodiments, the light source system further comprises a first light source;
the first light splitting and combining element comprises a reflecting area and a transmitting area; the reflection area of the first light-splitting and light-combining element reflects the light generated by the first light source or reflects the first target color light and/or the second target color light emitted into the first light-splitting and light-combining element from the dynamic element; the transmission region of the first light-splitting and light-combining element transmits the first target color light and/or the second target color light emitted from the dynamic element into the first light-splitting and light-combining element, or transmits the light generated by the first light source;
alternatively, the first light-splitting optical element has the property of reflecting and transmitting light of different wavelength ranges; the first light-splitting and light-combining element reflects or transmits light generated by the first light source, transmits or reflects first target color light and/or second target color light which are emitted into the first light-splitting and light-combining element from the dynamic element, and wavelength ranges of the light generated by the first light source, the first target color light and the second target color light are different from each other.
In some embodiments, the first region is a diffusion sheet having a half angle greater than the first predetermined angle and less than the second predetermined angle.
In some embodiments, the light splitting and combining component includes a first light splitting and combining element, a side, close to the light source module, of the first light splitting and combining element is a speckle suppression surface, and the other side of the first light splitting and combining element is a filtering surface;
the first target color light generated by the light source module is transmitted through the filtering surface and then is emitted into the light combining element after being subjected to speckle suppression through the speckle suppression surface;
the second target color light generated by the light source module is reflected by the filtering surface and then enters the wavelength conversion element after being subjected to speckle suppression by the speckle suppression surface.
In some embodiments, the light splitting and combining assembly includes a first light splitting and combining element including a first target region, a second target region, and a third target region;
the first target area is used for transmitting or reflecting first target color light generated by the light source module, and the first target color light generated by the light source module is emitted into the light combining element along a first light path through the first target area of the first light splitting and combining element;
the first target area is used for reflecting or transmitting second target color light generated by the light source module, and the second target color light generated by the light source module is emitted into the wavelength conversion element along a second light path through the second target area of the first light splitting and combining element;
the first target area is used for transmitting or reflecting second target color light generated by the light source module, and the second target color light generated by the light source module is emitted into the light combining element along the first light path through the third target area of the first light splitting and combining element.
In some embodiments, the light splitting and combining component is obliquely arranged on the light emitting path of the light source module at a preset angle with the light emitting optical axis of the light source module.
In some embodiments, the light source system further comprises a second light source and a second light splitting and combining element, the second light splitting and combining element being located on the second light path;
the light generated by the second light source is emitted into the wavelength conversion element after passing through the second light splitting and combining element and the second target color light emitted into the second light splitting and combining element from the light splitting and combining element.
In some embodiments, the second light splitting element has a reflective region and a transmissive region; the reflection area of the second light splitting and combining element is used for reflecting second target color light which is emitted into the second light splitting and combining element from the light splitting and combining assembly or reflecting light generated by the second light source; the transmission area of the second light splitting and combining element is used for transmitting light generated by the second light source or transmitting second target color light which is emitted into the second light splitting and combining element from the light splitting and combining component;
alternatively, the second light splitting and combining element has a characteristic of reflecting and transmitting light of different wavelength ranges; the second light splitting and combining element reflects or transmits the second target color light which is emitted from the light splitting and combining element into the second light splitting and combining element, and transmits or reflects the light generated by the second light source, wherein the wavelength range of the light generated by the second light source is different from that of the second target color light.
In some embodiments, the light source system further comprises a third light source and a third light splitting and combining element, the third light splitting and combining element being located on the second light path;
the third light splitting and combining element is used for transmitting the light beam from the second light splitting and combining element and reflecting the third target color light generated by the wavelength conversion element;
light generated by the third light source is emitted into the light combining element through the third light splitting and combining element.
In some embodiments, the third target color light generated by the light source module is emitted into the light combining element along the first light path through the light splitting and combining component, and is combined with the third target color light generated by the wavelength conversion element.
In a second aspect, the present utility model provides a projection device, including the light source system according to the first aspect and any one of the possible implementation manners of the first aspect.
The utility model divides the light beam generated by the light source module into two paths, one path of light beam can be used as the emergent light of the light source system after being processed, and the other path of light beam is used for exciting the wavelength conversion element to generate stimulated luminescence; therefore, the utilization rate of the light source module can be improved, and the brightness of the light source system can be improved.
Drawings
The above and other objects, features and advantages of the present utility model will become more apparent from the following more particular description of embodiments of the present utility model, as illustrated in the accompanying drawings. The accompanying drawings are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, and not constitute a limitation to the utility model. In the drawings, like reference numerals generally refer to like parts or steps. Wherein:
FIG. 1 is a schematic diagram of a light source system according to an embodiment of the utility model;
FIG. 2 is a schematic diagram of a light source system according to another embodiment of the present utility model;
FIG. 3 is a schematic view of a light source system according to another embodiment of the present utility model;
FIG. 4 is a schematic diagram of a light source system according to another embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a light source system according to another embodiment of the present utility model.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model. Furthermore, while the present disclosure has been described in terms of an exemplary embodiment or embodiments, it should be understood that each aspect of the disclosure may be separately implemented as a complete solution. The following embodiments and features of the embodiments may be combined with each other without conflict.
In embodiments of the utility model, words such as "in some embodiments," "for example," and the like are used to indicate examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The term "and/or" includes any and all combinations of one or more of the associated listed items.
In order that the utility model may be fully understood, a detailed description will be provided below in order to illustrate the technical aspects of the utility model. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.
The light source system provided by the utility model comprises a light source module, a light splitting and combining component, a wavelength conversion element, a light combining element and a light homogenizing element, wherein first target color light and/or second target color light generated by the light source module are/is emitted into the light combining element along a first light path through the light splitting and combining component, and are emitted into the light homogenizing element through the light combining element to perform light homogenizing; the second target color light generated by the light source module is emitted into the wavelength conversion element along the second light path through the light splitting and combining component, the wavelength conversion element is excited to generate third target color light, and the third target color light generated by the wavelength conversion element is emitted into the light homogenizing element through the light combining element to perform light homogenizing.
The light source module can comprise one or more laser light sources or LED light sources or mixed light sources of LEDs and the laser light sources, and when the number of the laser light sources is large, the focusing compression lens group can be added, so that the efficiency is improved. For example, the light source module includes a laser light source (rld) capable of generating red light and a laser light source (bld) capable of generating blue light; for another example, the light source module includes a laser light source (bld) for generating blue light; for another example, the light source module includes a laser light source (rld) capable of generating red light, a laser light source (bld) generating blue light, and a laser light source (gnd) generating green light.
The wavelength ranges of the first target color light, the second target color light and the third target color light are not limited; for example, the first target color light may be red light having a wavelength range of 640 to 650nm, the second target color light may be blue light having a wavelength range of 420 to 470nm, and the third target color light may be green light having a wavelength range of at least 520 to 580 nm.
The wavelength conversion element may be a phosphor such as green phosphor, phosphor sheet, phosphor wheel, or the like; or a fluorescent powder layer such as a green fluorescent powder layer (CG LED) is plated on the LED light source, light generated by the LED light source and second target color light generated by the light source module are excited from two sides to the fluorescent powder layer to generate third target color light, and the wavelength range of the third target color light can be green light with the wavelength range of 520-580 nm.
The light combining element may be a dichroic mirror or the like. The light homogenizing element can be a compound eye, a Fresnel lens, a micro lens array, a light rod or the like.
Optionally, the third target color light generated by the light source module is emitted into the light combining element along the first light path through the light splitting and combining component, and is combined with the third target color light generated by the wavelength conversion element.
In some embodiments, the light splitting and combining component comprises a first light splitting and combining element and a dynamic element, wherein the dynamic element comprises a first area and a second area; when the light source module generates first target color light, the first area of the dynamic element is positioned on the light emitting path of the light source module, and the first target color light generated by the light source module is transmitted through the first area and then enters the first light splitting and combining element along the first light path; when the light source module generates second target color light, the second area of the dynamic element is positioned on the light emitting path of the light source module, and the second target color light generated by the light source module is reflected by the second area and then enters the wavelength conversion element along the second light path; when the light source module generates second target color light, the first area of the dynamic element is positioned on the light emitting path of the light source module, and the second target color light generated by the light source module is transmitted through the first area and then enters the first light splitting and combining element along the first light path.
Wherein the first region may be a lens or a diffuser or a phase element, etc.; optionally, the first area is a diffusion sheet, and a half angle of the diffusion sheet is larger than the first preset angle and smaller than the second preset angle; the first preset angle and the second preset angle can be set in a self-defined mode according to practical application conditions, for example, the half angle of the diffusion sheet can be larger than 1 degree and smaller than 6.5 degrees. The half angle of the diffusion sheet refers to an included angle formed by a connecting line between the light spot boundary of the light spot before passing through the diffusion sheet and the light spot boundary of the light spot after passing through the diffusion sheet and the optical axis; the tangent of the half angle of the diffuser can be obtained from the difference between the radius of the spot after passing the diffuser and the radius of the spot before passing the diffuser, and the distance between the two spots. The second region may be a mirror, a transparent substrate coated with a reflective film, or the like.
Optionally, the light source system further includes a first light source, and the first light splitting and combining element includes a reflective area and a transmissive area; the reflection area of the first light-splitting and light-combining element reflects the light generated by the first light source or reflects the first target color light and/or the second target color light emitted into the first light-splitting and light-combining element from the dynamic element; the transmission region of the first light-splitting optical element transmits the first target color light and/or the second target color light emitted from the dynamic element into the first light-splitting optical element, or transmits light generated by the first light source.
The first light source may be an LED light source or a laser light source, for example, the first light source may be a B LED, and the generated light may be blue light having a wavelength ranging from 420 to 470nm. The reflection region of the first light-splitting optical element may be a mirror, a transparent substrate coated with a reflection film, or the like, and for example, the reflection region may reflect blue light having a wavelength range of 420 to 470nm. The transmission area can be an area where a hole obtained by perforating the first light splitting and combining element is located, or a transparent substrate without a plating film, or a plating polarization film, and the like; the transmission region may transmit blue light having a wavelength range of 420 to 470nm and/or red laser light having a wavelength range of 639 to 647nm, or transmit red light and blue light in a P or S state.
Alternatively, the first light-splitting optical element has the property of reflecting and transmitting light of different wavelength ranges; the first light-splitting and light-combining element reflects or transmits light generated by the first light source, transmits or reflects first target color light and/or second target color light which are emitted into the first light-splitting and light-combining element from the dynamic element, and wavelength ranges of the light generated by the first light source, the first target color light and the second target color light are different from each other. Wherein the first light splitting and combining element may be coated with a dichroic film. For example, the first light source may be a red RLED, and the first light splitting and combining element reflects red light (wavelength range of 600 to 620 nm) generated by the first light source; blue light (such as wavelength range 420-470 nm) and red light (such as wavelength range 639-650 nm) generated by the transmission light source module.
In some embodiments, the light splitting and combining component includes a first light splitting and combining element, a side, close to the light source module, of the first light splitting and combining element is a speckle suppression surface, and the other side of the first light splitting and combining element is a filtering surface; the first target color light generated by the light source module is transmitted through the filtering surface and then is emitted into the light combining element after being subjected to speckle suppression through the speckle suppression surface; the second target color light generated by the light source module is reflected by the filtering surface and then enters the wavelength conversion element after being subjected to speckle suppression by the speckle suppression surface.
Wherein the speckle suppressing surface may be a diffusion sheet or the like; the filter surface may be a transparent substrate coating film, and the film may be characterized by reflecting blue light having a wavelength range of 420 to 470nm and transmitting red light having a wavelength range of 640 to 650 nm.
In some embodiments, the light splitting and combining assembly includes a first light splitting and combining element including a first target region, a second target region, and a third target region; the first target area is used for transmitting or reflecting first target color light generated by the light source module, and the first target color light generated by the light source module is emitted into the light combining element along a first light path through the first target area of the first light splitting and combining element; the first target area is used for reflecting or transmitting second target color light generated by the light source module, and the second target color light generated by the light source module is emitted into the wavelength conversion element along a second light path through the second target area of the first light splitting and combining element; the first target area is used for transmitting or reflecting second target color light generated by the light source module, and the second target color light generated by the light source module is emitted into the light combining element along the first light path through the third target area of the first light splitting and combining element.
Wherein the first target region may have a diffusion characteristic or be not coated with a film or be coated with an antireflection film (AR film) or be coated with a film transmitting red light in a wavelength range of 640 to 650 nm. The second target region may be coated with a film reflecting blue light having a wavelength range of 420 to 470nm. The third target region may have a diffusion characteristic or be not plated with an AR film or be plated with a film transmitting blue light having a wavelength range of 420 to 470nm.
Optionally, the light splitting and combining component is obliquely arranged on the light emitting path of the light source module at a preset angle with the light emitting optical axis of the light source module. The preset angle is not limited, and can be set in a self-defined manner according to practical application conditions, for example, can be 45 degrees. For example, the dynamic element and the first light splitting and combining element may be placed at 45 degrees, parallel to the first light splitting and combining element.
In some embodiments, the light source system further comprises a second light source and a second light splitting and combining element, the second light splitting and combining element being located on the second light path; the light generated by the second light source is emitted into the wavelength conversion element after passing through the second light splitting and combining element and the second target color light emitted into the second light splitting and combining element from the light splitting and combining element.
Wherein the second light source can be an LED light source or a laser light source; for example, the second light source may be a B LED and the generated light may be blue light having a wavelength in the range of 420-470 nm.
Optionally, the second light splitting and combining element includes a reflective region and a transmissive region; the reflection area is used for reflecting second target color light emitted into the second light splitting and combining element from the light splitting and combining component or reflecting light generated by the second light source; the transmission region of the second light splitting and combining element is used for transmitting light generated by the second light source or transmitting second target color light which is emitted into the second light splitting and combining element from the light splitting and combining component.
The reflective region may be a mirror, a transparent substrate coated with a reflective film, or the like, and may reflect blue light having a wavelength range of 420 to 470nm, for example. The transmission region may be a region where a hole obtained by punching the first light splitting optical element is located, or may be a transparent substrate without a coating film; the transmission region may transmit blue light having a wavelength range of 420 to 470nm.
Alternatively, the second light splitting and combining element has a characteristic of reflecting and transmitting light of different wavelength ranges; the second light splitting and combining element reflects or transmits the second target color light which is emitted from the light splitting and combining element into the second light splitting and combining element, and transmits or reflects the light generated by the second light source, wherein the wavelength range of the light generated by the second light source is different from that of the second target color light. Wherein the first light splitting and combining element may be coated with a dichroic film. For example, the wavelength range of the light generated by the second light source is 420 to 450nm, and the wavelength range of the second target color light is 455 to 470nm.
In some embodiments, the light source system further comprises a third light source and a third light splitting and combining element, the third light splitting and combining element being located on a third light path; the third light splitting and combining element is used for transmitting the light beam from the second light splitting and combining element and reflecting the third target color light generated by the wavelength conversion element; light generated by the third light source is emitted into the light combining element through the third light splitting and combining element.
Wherein the third light source can be an LED light source or a laser light source; for example, the second light source may be an R LED and the generated light may be red light having a wavelength in the range of 640 to 650 nm. The optical characteristic of the third light-splitting optical element may be red light having a transmission wavelength range of 640 to 650nm, blue light having a transmission wavelength range of 420 to 470nm, and green light having a reflection wavelength range of 520 to 580 nm.
Alternatively, focusing lens groups (focusing lenses, collimating lenses, etc.) may be appropriately provided at the light-emitting side of each light source and/or the light-entering side of the light-combining element in the light source system.
For example, as shown in fig. 1, a schematic structure of a light source system according to the present utility model is shown. As shown in fig. 1, the light source system includes a light source module (RB LD) 0, a dynamic element 1, a first light splitting and combining element 2, a light combining element 4, a focusing lens group 3 located between the light combining element 4 and the first light splitting and combining element, a light homogenizing element 5, a first light source (ble d) 6 and its corresponding focusing lens group 7, a second light splitting and combining element 8, a second light source (BP LED) 9 and its corresponding focusing lens group 10, a wavelength conversion element (CG LED) 12 and its corresponding focusing lens group 13, a third light splitting and combining element 14, a focusing lens group 11 located between the second light splitting and combining element 8 and the third light splitting and combining element 14, a third light source 15 and its corresponding focusing lens group 16, and a focusing lens group 17 located between the third light splitting and combining element 14 and the light combining element 4. Wherein, the light source module 0 includes rld and bld, the dynamic element 1 includes a first region and a second region, the first light splitting and combining element 2 includes a transmission region and a reflection region, and the second light splitting and combining element 8 also includes a transmission region and a reflection region.
When the rld in the light source module 0 is on, the first area of the dynamic element 1 is on the first optical path, and the red light generated by the light source module 0 enters the first light splitting and combining element 2 after being speckle-suppressed by the first area of the dynamic element 1, enters the light combining element 4 after being transmitted by the transmission area of the first light splitting and combining element 2 and the focusing lens group 3, and enters the light homogenizing element 5 after being reflected by the light combining element 4. The third light source (R LED) 15 may be turned on at the same time as the R LD is turned on, and the red light generated by the third light source 15 is transmitted through the focusing lens group 16, the third light splitting and combining element 16 and the focusing lens group 17 and then is emitted into the light combining element 4, and is transmitted through the light combining element 4 and is combined with the red light generated by the R LD and then is emitted into the light homogenizing element 5 to be homogenized. When the wavelength ranges of the red light generated by the RLD and the red light generated by the third light source 15 are the same or coincide, a reflective film may be coated on a partial region of the light combining element 4 to reflect the red light generated by the RLD; areas other than the plated reflective film transmit red light generated by the third light source 15. When the red light generated by the rld and the red light generated by the third light source 15 are completely different in wavelength range, the dichroic film may be coated on the optical element to reflect and transmit the red light having different wavelength ranges.
When the B LD in the light source module 0 is turned on, the first area of the dynamic element 1 is on the first optical path, the blue light generated by the light source module 0 is radiated into the first light splitting and combining element 2 after being speckle-suppressed by the first area of the dynamic element 1, and is transmitted by the transmission area of the first light splitting and combining element 2, and the transmission area is used for forming a hole where the first light splitting and combining element is located or a transparent substrate area without a coating film. At this time, the first light source (B LED) 6 may be turned on, and the blue light generated by the first light source 6 is transmitted through the focusing lens group 7 and then enters the first light splitting and combining element 2, and is reflected by the reflection area of the first light splitting and combining element 2 and the blue light generated by the B LD, where the reflection area may be a reflection mirror or an area where a transparent substrate is coated with a reflection film; the light is transmitted through the transmission area of the first light splitting and combining element 2 and the focusing lens group 3, then enters the light combining element 4, and is reflected by the light combining element 4 and then enters the light homogenizing element 5 for homogenizing.
When the B LD in the light source module 0 is on, the second area of the dynamic element 1 is on the second optical path, and the blue light generated by the light source module 0 is reflected by the second area of the dynamic element 1 and then enters the second light splitting and combining element 8. At this time, the second light source (B LED) 9 may be turned on, and the blue light generated by the second light source 9 is transmitted through the focusing lens group 10, then enters the second light splitting and combining element 8, and is transmitted through the second light splitting and combining element 8 and combines with the blue light from the dynamic element 1; when the wavelength ranges of the blue light generated by the second light source and the blue light generated by the B LD are different, the second light splitting element 8 may be coated with a dichroic film to transmit and reflect the blue light of different wavelengths; when the wavelength ranges of the blue light generated by the second light source and the blue light generated by the B LD are the same or overlap, a reflective film may be coated on a partial region of the second light splitting element 8 to reflect the blue light generated by the B LD; the areas other than the reflective coating transmit blue light generated by the second light source 9. The combined light is transmitted through the focusing lens group 11, the third light splitting and combining element 14 and the focusing lens group 13 and then enters the wavelength conversion element 12; the wavelength conversion element 12 is excited to generate green light, the green light generated by the wavelength conversion element 12 is transmitted by the focusing lens group 13 and then is emitted into the third light splitting and combining element 14, the green light is reflected by the third light splitting and combining element 14 and then is emitted into the light combining element 4 by the focusing lens group 17, and the green light is transmitted by the light combining element 4 and then is emitted into the light homogenizing element 5 for homogenizing.
As shown in fig. 1, only B LD may be included in the light source module 0. The red light may be provided only by the third light source (R LED) 15. The first region of the dynamic element may be a phase element and the transmission region of the first light splitting optical element 2 may transmit blue light in the P-state. The blue light generated by the light source module is converted into the polarization state through the phase element, so that the blue light can be divided into two paths, one path is used as the emergent light of the blue light time sequence light source system, the other path is used as the excitation light at the green light time sequence, the structure is simple and compact, and the utilization rate of the light source module can be improved.
When the B LD in the light source module 0 is on, the first region of the dynamic element 1 is on the first optical path, and the blue light generated by the light source module 0 is transmitted through the transmission region of the first light splitting and combining element 2 after being polarized state converted by the first region of the dynamic element 1 and then is injected into the first light splitting and combining element 2.
As shown in fig. 2, a schematic diagram of a light source system according to the present utility model is provided, and the light source system is different from the light source system shown in fig. 1 in that the light source system does not include the dynamic element 1, and the first light splitting and combining element 2 includes the speckle suppression surface and the filtering surface, and the light source module 0 includes the rld and the brd.
When the rld in the light source module 0 is turned on, the red light generated by the light source module 0 is speckle-suppressed by the speckle suppression surface of the first light splitting and combining element 2, then enters the filtering surface of the first light splitting and combining element 2, is transmitted by the filtering surface of the first light splitting and combining element 2 and the focusing lens group 3, then enters the light combining element 4, and is reflected by the light combining element 4 and then enters the light homogenizing element 5.
When the B LD in the light source module 0 is turned on, blue light generated by the light source module 0 enters the filter surface of the first light splitting and combining element 2 after being speckle-suppressed by the speckle suppression surface of the first light splitting and combining element 2, and enters the second light splitting and combining element 8 after being reflected by the filter surface of the first light splitting and combining element 2.
As shown in fig. 3, a schematic diagram of a light source system according to the present utility model is provided, and the light source system is different from the light source system shown in fig. 1 in that the light source system may not include the first light source and the corresponding focusing lens group, and the lens group corresponding to the second light source.
As shown in fig. 4, a schematic diagram of a light source system according to the present utility model is provided, and the light source system is different from the light source system shown in fig. 1 in that the first light source and the corresponding focusing lens group may not be included.
As shown in fig. 5, a schematic diagram of a light source system according to the present utility model is provided, and the light source system is different from the light source system shown in fig. 1 in that the second light source and the corresponding focusing lens group may not be included.
In the light source system, the light beam generated by the light source module is divided into two paths, one path of light beam can be used as emergent light of the light source system after being processed, and the other path of light beam is used for exciting the wavelength conversion element to generate stimulated luminescence; therefore, the utilization rate of the light source module can be improved, and the brightness of the light source system can be improved.
The light source system of the present utility model can be applied to any application scene requiring composite light, including but not limited to projectors, such as single DLP projectors, triple DLP projectors.
The embodiment of the present utility model further provides a projection device, which includes the light source system related to the above embodiment, and further includes other components, such as a projection lens, where the arrangement of these components can be referred to the related art, and will not be described herein.
The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items. The character "/" herein generally indicates that the associated object is an "or" relationship.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (12)
1. The utility model provides a light source system, its characterized in that, light source system includes light source module, beam split and close optical subassembly, wavelength conversion element, light combining element and even optical element, wherein:
the first target color light and/or the second target color light generated by the light source module are/is injected into the light combining element along a first light path through the light splitting and combining component, and are injected into the light homogenizing element through the light combining element for homogenizing;
the second target color light generated by the light source module is emitted into the wavelength conversion element along a second light path through the light splitting and combining component, the wavelength conversion element is excited to generate third target color light, and the third target color light generated by the wavelength conversion element is emitted into the light homogenizing element through the light combining element to perform light homogenizing.
2. The light source system of claim 1, wherein the light splitting and combining assembly comprises a first light splitting and combining element and a dynamic element, the dynamic element comprising a first region and a second region;
when the light source module generates first target color light, a first area of the dynamic element is positioned on a light emitting path of the light source module, and the first target color light generated by the light source module is transmitted through the first area and then is emitted into the first light splitting and combining element along a first light path;
when the light source module generates second target color light, the second area of the dynamic element is positioned on the light emitting path of the light source module, and the second target color light generated by the light source module is reflected by the second area and then is emitted into the wavelength conversion element along a second light path;
when the light source module generates second target color light, the first area of the dynamic element is positioned on the light emitting path of the light source module, and the second target color light generated by the light source module is transmitted through the first area and then is emitted into the first light splitting and combining element along the first light path.
3. A light source system as recited in claim 2, wherein said light source system further comprises a first light source;
the first light splitting and combining element comprises a reflecting area and a transmitting area; the reflection area of the first light splitting and combining element reflects the light generated by the first light source or reflects the first target color light and/or the second target color light which are emitted into the first light splitting and combining element from the dynamic element; the transmission region of the first light-splitting and light-combining element transmits first target color light and/or second target color light which are emitted into the first light-splitting and light-combining element from the dynamic element, or transmits light generated by the first light source;
alternatively, the first light-splitting optical element has a characteristic of reflecting and transmitting light of different wavelength ranges; the first light-splitting and light-combining element reflects or transmits light generated by the first light source, transmits or reflects first target color light and/or second target color light which are emitted into the first light-splitting and light-combining element from the dynamic element, and wavelength ranges of the light generated by the first light source, the first target color light and the second target color light are different from each other.
4. A light source system as recited in claim 2, wherein the first region is a diffuser having a half angle greater than the first predetermined angle and less than the second predetermined angle.
5. The light source system according to claim 1, wherein the light splitting and combining component comprises a first light splitting and combining element, a side, close to the light source module, of the first light splitting and combining element is a speckle suppression surface, and the other side of the first light splitting and combining element is a filtering surface;
the first target color light generated by the light source module is transmitted through the filtering surface and then enters the light combining element after being subjected to speckle suppression through the speckle suppression surface;
and the second target color light generated by the light source module is reflected by the filtering surface and then enters the wavelength conversion element after being subjected to speckle suppression by the speckle suppression surface.
6. The light source system of claim 1, wherein the light splitting and combining assembly comprises a first light splitting and combining element comprising a first target area, a second target area, and a third target area;
the first target area is used for transmitting or reflecting first target color light generated by the light source module, and the first target color light generated by the light source module is emitted into the light combining element along a first light path through the first target area of the first light splitting and combining element;
the first target area is used for reflecting or transmitting second target color light generated by the light source module, and the second target color light generated by the light source module is emitted into the wavelength conversion element along a second light path through the second target area of the first light splitting and combining element;
the first target area is used for transmitting or reflecting second target color light generated by the light source module, and the second target color light generated by the light source module is emitted into the light combining element along a first light path through a third target area of the first light splitting and combining element.
7. The light source system according to claim 1, wherein the light splitting and combining component is disposed on the light emitting path of the light source module at a predetermined angle with respect to the light emitting axis of the light source module.
8. A light source system as recited in claim 1, further comprising a second light source and a second light splitting and combining element, said second light splitting and combining element being located on said second light path;
the light generated by the second light source is emitted into the wavelength conversion element after passing through the second light splitting and combining element and the second target color light splitting and combining element.
9. A light source system as recited in claim 8, wherein,
the second light splitting and combining element is provided with a reflecting area and a transmitting area; the reflection area of the second light splitting and combining element is used for reflecting second target color light emitted into the second light splitting and combining element from the light splitting and combining assembly or reflecting light generated by the second light source; the transmission area of the second light splitting and combining element is used for transmitting light generated by the second light source or transmitting second target color light which is emitted into the second light splitting and combining element from the light splitting and combining component;
alternatively, the second light splitting and combining element has a characteristic of reflecting and transmitting light of different wavelength ranges; the second light splitting and combining element reflects or transmits second target color light which is emitted into the second light splitting and combining element from the light splitting and combining component, and transmits or reflects light generated by the second light source, wherein the wavelength range of the light generated by the second light source is different from that of the second target color light.
10. A light source system as recited in claim 9, further comprising a third light source and a third light splitting and combining element, said third light splitting and combining element being located on said second light path;
the third light splitting and combining element is used for transmitting the light beam from the second light splitting and combining element and reflecting the third target color light generated by the wavelength conversion element;
the light generated by the third light source is emitted into the light combining element through the third light splitting and combining element.
11. The light source system according to claim 1, wherein the third target color light generated by the light source module is incident to the light combining element along the first light path through the light splitting and combining component, and is combined with the third target color light generated by the wavelength converting element.
12. A projection device comprising the light source system of any of claims 1-11.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223167520.0U CN219533605U (en) | 2022-11-29 | 2022-11-29 | Light source system and projection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223167520.0U CN219533605U (en) | 2022-11-29 | 2022-11-29 | Light source system and projection equipment |
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| CN219533605U true CN219533605U (en) | 2023-08-15 |
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| CN202223167520.0U Active CN219533605U (en) | 2022-11-29 | 2022-11-29 | Light source system and projection equipment |
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| CN (1) | CN219533605U (en) |
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