High-uniformity optical engine system with multiple optical extensions

Abstract

The utility model provides a high-uniformity optical engine system with multiple optical extensions, which relates to the technical field of projection display and comprises an optical machine light source, a dichroscope, a wavelength conversion device, an optical machine system and an angle adjusting device. The system optical wand provided by the utility model does not need to be designed to be very long, so that the effects of saving cost and reducing efficiency loss are achieved; meanwhile, the complementary color light and the excited light have different optical extensions, but the same dodging system can be shared in the system to realize high uniformity; the problems that in the prior art, the size of a projector is increased, the cost is increased, and the efficiency of excited light is reduced due to multiple reflection times are solved; when a compound eye system is adopted, three-color laser beams need to be expanded firstly, so that the optical cost is increased, and the light combination efficiency is influenced after beam expansion; and the light emitting angle and the light beam aperture of the complementary color light source are small, so that the reflection times of the complementary color light source entering the light bar after light combination are less than the reflection times of the excited light, the uniform light is not enough, and the picture brightness and color uniformity are not good.

Description

Technical Field

[0001] This utility model relates to the field of projection display technology, specifically to a high-uniformity multi-optical expansion light engine system. Background Technology

[0002] In projector display imaging light sources, tri-color lasers, with their purity and accuracy, provide display devices with unparalleled color gamut and color accuracy. Simultaneously, the efficient electro-optical conversion of lasers makes them a more "low-carbon" ideal light source technology. However, besides these inherent advantages, tri-color lasers also have a significant problem: speckle. To avoid speckle, hybrid light sources have emerged, such as LED-hybrid tri-color laser light sources and laser-fluorescent hybrid tri-color laser light sources. Because the light patterns of LED light sources, laser fluorescent light sources, and tri-color lasers differ considerably, the optical imaging system resulting from combining these often causes problems with image uniformity.

[0003] Light sources with different optical expansion are combined on the same beam splitter and combiner. After passing through relevant optical elements, they enter the homogenizing device of the optomechanical system. The homogenizing device generally uses a light bar or a compound eye system. Lengthening the light bar in the optomechanical system or using a compound eye system (using a compound eye system requires first expanding the three-color laser beam to be comparable to the beam aperture of the combined light source) aims to increase the number of reflections of the three-color laser in the light bar to achieve the homogenizing effect. However, this will increase the size and cost of the projector, and the efficiency of the laser will decrease due to the increased number of reflections. Since the light spread of the three-color laser is smaller than that of the combined light source, using a compound eye system requires first expanding the three-color laser beam, which increases optical costs and affects the beam combining efficiency after beam expansion. The small exit angle and beam aperture of the complementary color light source result in fewer reflections after entering the light bar than the laser after beam combining, leading to insufficient homogenization and poor brightness and color uniformity of the image. Summary of the Invention

[0004] To address the technical problems existing in the prior art, this utility model provides a high-uniformity multi-optical expansion light engine system, including an optomechanical light source, a dichroic mirror, a wavelength conversion device, an optomechanical system, and an angle adjustment device. The optomechanical light source includes an excitation light source and a complementary light source. The excitation light source and the complementary light source are respectively disposed on one side of the dichroic mirror. One side of the dichroic mirror reflects the excitation light emitted from the excitation light source to the wavelength conversion device. The other side of the dichroic mirror reflects the complementary light emitted from the complementary light source to the angle adjustment device. The wavelength conversion device is used to convert the excitation light into stimulated light of a specified wavelength. The stimulated light enters the angle adjustment device after being transmitted through the dichroic mirror. The angle adjustment device is used to adjust the angle between the stimulated light and the complementary light so that they enter the optomechanical system.

[0005] The present invention provides a high uniformity multi-optical expansion light engine system, wherein the preferred angle adjustment device includes a first plane mirror and a second plane mirror; the first plane mirror is used to adjust the angle at which the laser enters the optomechanical system; and the second plane mirror is used to adjust the angle at which the complementary color light enters the optomechanical system.

[0006] The present invention provides a high uniformity multi-optical expansion light engine system, wherein preferably, the first plane mirror and the second plane mirror are disposed in the same plane; and the first plane mirror and the second plane mirror do not overlap in spatial hierarchy on the optical path.

[0007] The present invention provides a high uniformity multi-optical extended light engine system, wherein preferably, the first plane mirror and the second plane mirror have the function of reflecting at least two or more of the following light sources: laser light, excitation light, and complementary color light.

[0008] The present invention provides a high uniformity multi-optical extended light engine system, wherein preferably, the first plane mirror and the second plane mirror are not located in the same plane.

[0009] The present invention provides a high uniformity multi-optical extended light engine system, wherein, preferably, the second plane mirror is disposed in front of the optical path of the first plane mirror; the second plane mirror has the functions of reflecting all complementary color light, reflecting part of the excitation light, and reflecting part of the laser-received light; the first plane mirror has the functions of reflecting both the laser-received light and the excitation light.

[0010] The present invention provides a high uniformity multi-optical extended light engine system, wherein, preferably, the first plane mirror is disposed in front of the optical path of the second plane mirror; the first plane mirror has the function of reflecting laser light, reflecting excitation light and transmitting complementary color light; the second plane mirror has the function of reflecting complementary color light.

[0011] The present invention provides a high uniformity multi-optical extended light engine system, wherein preferably, the first plane mirror and the second plane mirror have adjustable angles within the system.

[0012] The present invention provides a high uniformity multi-optical expansion light engine system, preferably further comprising a converging and diffusing lens group; the converging and diffusing lens group includes at least one converging and diffusing lens; a first converging and diffusing lens is disposed between the excitation light source and the dichroic mirror; a second converging and diffusing lens is disposed between the complementary color light source and the dichroic mirror; a third converging and diffusing lens is disposed between the wavelength conversion device and the dichroic mirror; and a fourth converging and diffusing lens is disposed between the dichroic mirror and the angle adjustment device.

[0013] This invention provides a high-uniformity, multi-optical-expansion optical engine system, comprising an optomechanical light source, a dichroic mirror, a wavelength conversion device, an optomechanical system, and an angle adjustment device. The optomechanical light source includes a laser light source and a supplementary light source. Excitation light emitted from the laser light source is reflected by the dichroic mirror and reaches the wavelength conversion device. After conversion, the excited light passes through the dichroic mirror and reaches the angle adjustment device. Reflection by the angle adjustment device ensures the excited light enters the optomechanical system at a more appropriate angle. Complementary light emitted from the supplementary light source is reflected by the dichroic mirror and reaches the angle adjustment device. After being adjusted to a reasonable angle, it enters the optomechanical system. This invention provides... The system's light bar doesn't need to be designed to be very long, thus saving costs and reducing efficiency loss. Simultaneously, although the complementary color light and the received laser have different optical expansion amounts, they can share the same homogenizing system to achieve high uniformity. This solves the problems of increased projector size and cost in existing technologies, and decreased laser efficiency due to more reflections; the need to expand the three-color laser beams in a compound-eye system, increasing optical costs and affecting beam combining efficiency; and the small exit angle and beam aperture of the complementary color light source, resulting in fewer reflections after beam combining compared to the received laser, leading to insufficient homogenization and poor brightness and color uniformity of the image. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of an embodiment 1 of a high-uniformity multi-optical extended quantity light engine system provided by this utility model;

[0015] Figure 2 A schematic diagram of the structure of an embodiment 2 of a high-uniformity multi-optical extended quantity light engine system provided by this utility model;

[0016] Figure 3 A schematic diagram of the structure of an embodiment 3 of a high-uniformity multi-optical extended quantity light engine system provided by this utility model;

[0017] Labeling explanation: Optomechanical light source 1, Light source 1-1, Complementary color light source 1-2, Dichroic mirror 2, Wavelength conversion device 3, Optomechanical system 4, Angle adjustment device 5, First plane mirror 5-1, Second plane mirror 5-2, Converging and diffusing lens group 6, First converging and diffusing lens 6-1, Second converging and diffusing lens 6-2, Third converging and diffusing lens 6-3, Fourth converging and diffusing lens 6-4. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0019] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0020] like Figures 1-3 As shown, this utility model provides a high-uniformity multi-optical-expansion optical engine system, including an optomechanical light source 1, a dichroic mirror 2, a wavelength conversion device 3, an optomechanical system 4, and an angle adjustment device 5. The optomechanical light source 1 includes an excitation light source 1-1 and a complementary light source 1-2. The excitation light source 1-1 and the complementary light source 1-2 are respectively disposed on one side of the dichroic mirror 2. One side of the dichroic mirror 2 reflects the excitation light emitted from the excitation light source 1-1 onto the wavelength conversion device 3. The other side of the dichroic mirror 2 reflects the complementary light emitted from the complementary light source 1-2 onto the angle adjustment device 5. The wavelength conversion device 3 is used to convert the excitation light into stimulated light of a specified wavelength. The stimulated light enters the angle adjustment device 5 after being transmitted through the dichroic mirror 2. The angle adjustment device 5 is used to adjust the angle between the stimulated light and the complementary light so that they enter the optomechanical system 4.

[0021] The present invention provides a high uniformity multi-optical extended quantity light engine system. Preferably, the angle adjustment device 5 includes a first plane mirror 5-1 and a second plane mirror 5-2; the first plane mirror 5-1 is used to adjust the angle at which the laser enters the optomechanical system 4; the second plane mirror 5-2 is used to adjust the angle at which the complementary color light enters the optomechanical system 4.

[0022] The present invention provides a high uniformity multi-optical expansion light engine system, wherein preferably, the first plane mirror 5-1 and the second plane mirror 5-2 are disposed in the same plane; and the first plane mirror 5-1 and the second plane mirror 5-2 have no spatial overlap in the optical path; more specifically, the first plane mirror 5-1 and the second plane mirror 5-2 have at least the function of reflecting any two or more types of light, including laser light, excitation light and complementary color light.

[0023] This invention provides a high-uniformity multi-optical extended-range light engine system, preferably in which the first plane mirror 5-1 and the second plane mirror 5-2 are not located in the same plane. Preferably, when the second plane mirror 5-2 is positioned before the optical path of the first plane mirror 5-1, the second plane mirror 5-2 has the function of reflecting all complementary color light, reflecting part of the excitation light, and reflecting part of the laser beam; the first plane mirror 5-1 has the function of reflecting both the laser beam and the excitation light.

[0024] The present invention provides a high uniformity multi-optical extended light engine system, wherein, preferably, the first plane mirror 5-1 is disposed in front of the optical path of the second plane mirror 5-2; the first plane mirror 5-1 has the function of reflecting laser light, reflecting excitation light and transmitting complementary color light; the second plane mirror 5-2 has the function of reflecting complementary color light.

[0025] The present invention provides a high uniformity multi-optical extended light engine system, wherein preferably, the first plane mirror 5-1 and the second plane mirror 5-2 have adjustable angles within the system.

[0026] The present invention provides a high uniformity multi-optical expansion light engine system, preferably further comprising a converging and diffusing lens group 6; the converging and diffusing lens group 6 includes at least one converging and diffusing lens; a first converging and diffusing lens 6-1 is disposed between the excitation light source 1-1 and the dichroic mirror 2; a second converging and diffusing lens 6-2 is disposed between the complementary color light source 1-2 and the dichroic mirror 2; a third converging and diffusing lens 6-3 is disposed between the wavelength conversion device 3 and the dichroic mirror 2; and a fourth converging and diffusing lens 6-4 is disposed between the dichroic mirror 2 and the angle adjustment device 5.

[0027] Example 1 Figure 1 As shown:

[0028] This invention provides a high-uniformity, multi-optical-expansion optical engine system, comprising an optomechanical light source 1, a dichroic mirror 2, a wavelength conversion device 3, an optomechanical system 4, and an angle adjustment device 5. The optomechanical light source 1 includes an excitation light source 1-1 and a complementary light source 1-2. The excitation light source 1-1 and the complementary light source 1-2 are respectively disposed on one side of the dichroic mirror 2. One side of the dichroic mirror 2 reflects the excitation light emitted from the excitation light source 1-1 onto the wavelength conversion device 3. The other side of the dichroic mirror 2 reflects the complementary light emitted from the complementary light source 1-2 onto the angle adjustment device 5. The wavelength conversion device 3 is used to convert the excitation light into stimulated light of a specified wavelength. The stimulated light enters the angle adjustment device 5 after being transmitted through the dichroic mirror 2. The angle adjustment device 5 is used to adjust the angle between the stimulated light and the complementary light so that they enter the optomechanical system 4.

[0029] The angle adjustment device 5 includes a first plane mirror 5-1 and a second plane mirror 5-2; the first plane mirror 5-1 is used to adjust the angle at which the laser enters the optomechanical system 4; the second plane mirror 5-2 is used to adjust the angle at which the complementary color light enters the optomechanical system 4; the first plane mirror 5-1 and the second plane mirror 5-2 are disposed in the same plane; and the first plane mirror 5-1 and the second plane mirror 5-2 do not overlap in spatial hierarchy on the optical path; more specifically, the first plane mirror 5-1 and the second plane mirror 5-2 have at least the function of reflecting any two or more types of light, including the laser, the excitation light, and the complementary color light; of the two plane mirrors, at least one or more are in the mounting surface and have a degree of freedom of adjustment, with the second plane mirror 5-2 being preferred.

[0030] The high uniformity multi-optical expansion light engine system provided by this utility model also includes a converging and diffusing lens group 6; the converging and diffusing lens group 6 includes at least one converging and diffusing lens; a first converging and diffusing lens 6-1 is disposed between the excitation light source 1-1 and the dichroic mirror 2; a second converging and diffusing lens 6-2 is disposed between the complementary color light source 1-2 and the dichroic mirror 2; a third converging and diffusing lens 6-3 is disposed between the wavelength conversion device 3 and the dichroic mirror 2; and a fourth converging and diffusing lens 6-4 is disposed between the dichroic mirror 2 and the angle adjustment device 5.

[0031] Example 2 Figure 2 As shown:

[0032] This invention provides a high-uniformity, multi-optical-expansion optical engine system, comprising an optomechanical light source 1, a dichroic mirror 2, a wavelength conversion device 3, an optomechanical system 4, and an angle adjustment device 5. The optomechanical light source 1 includes an excitation light source 1-1 and a complementary light source 1-2. The excitation light source 1-1 and the complementary light source 1-2 are respectively disposed on one side of the dichroic mirror 2. One side of the dichroic mirror 2 reflects the excitation light emitted from the excitation light source 1-1 onto the wavelength conversion device 3. The other side of the dichroic mirror 2 reflects the complementary light emitted from the complementary light source 1-2 onto the angle adjustment device 5. The wavelength conversion device 3 is used to convert the excitation light into stimulated light of a specified wavelength. The stimulated light enters the angle adjustment device 5 after being transmitted through the dichroic mirror 2. The angle adjustment device 5 is used to adjust the angle between the stimulated light and the complementary light so that they enter the optomechanical system 4.

[0033] The angle adjustment device 5 includes a first plane mirror 5-1 and a second plane mirror 5-2; the first plane mirror 5-1 is used to adjust the angle at which the laser enters the optomechanical system 4; the second plane mirror 5-2 is used to adjust the angle at which the complementary color light enters the optomechanical system 4; the first plane mirror 5-1 and the second plane mirror 5-2 are not located in the same plane, and when the second plane mirror 5-2 is located in front of the optical path of the first plane mirror 5-1; the second plane mirror 5-2 has the function of reflecting all the complementary color light, reflecting part of the excitation light, and reflecting part of the laser; the first plane mirror 5-1 has the function of reflecting the laser and the excitation light; of the two plane mirrors, at least one is in the mounting surface and has a degree of freedom of adjustment, with the second plane mirror 5-2 being preferred.

[0034] The high uniformity multi-optical expansion light engine system provided by this utility model also includes a converging and diffusing lens group 6; the converging and diffusing lens group 6 includes at least one converging and diffusing lens; a first converging and diffusing lens 6-1 is disposed between the excitation light source 1-1 and the dichroic mirror 2; a second converging and diffusing lens 6-2 is disposed between the complementary color light source 1-2 and the dichroic mirror 2; a third converging and diffusing lens 6-3 is disposed between the wavelength conversion device 3 and the dichroic mirror 2; and a fourth converging and diffusing lens 6-4 is disposed between the dichroic mirror 2 and the angle adjustment device 5.

[0035] Example 3 Figure 3 As shown:

[0036] This invention provides a high-uniformity, multi-optical-expansion optical engine system, comprising an optomechanical light source 1, a dichroic mirror 2, a wavelength conversion device 3, an optomechanical system 4, and an angle adjustment device 5. The optomechanical light source 1 includes an excitation light source 1-1 and a complementary light source 1-2. The excitation light source 1-1 and the complementary light source 1-2 are respectively disposed on one side of the dichroic mirror 2. One side of the dichroic mirror 2 reflects the excitation light emitted from the excitation light source 1-1 onto the wavelength conversion device 3. The other side of the dichroic mirror 2 reflects the complementary light emitted from the complementary light source 1-2 onto the angle adjustment device 5. The wavelength conversion device 3 is used to convert the excitation light into stimulated light of a specified wavelength. The stimulated light enters the angle adjustment device 5 after being transmitted through the dichroic mirror 2. The angle adjustment device 5 is used to adjust the angle between the stimulated light and the complementary light so that they enter the optomechanical system 4.

[0037] The angle adjustment device 5 includes a first plane mirror 5-1 and a second plane mirror 5-2; the first plane mirror 5-1 is used to adjust the angle at which the laser enters the optomechanical system 4; the second plane mirror 5-2 is used to adjust the angle at which the complementary color light enters the optomechanical system 4; when the first plane mirror 5-1 is placed in front of the optical path of the second plane mirror 5-2; the first plane mirror 5-1 has the function of reflecting the laser, reflecting the excitation light and transmitting the complementary color light; the second plane mirror 5-2 has the function of reflecting the complementary color light; of the two plane mirrors, at least one is in the mounting surface and has a degree of freedom of adjustment, with the second plane mirror 5-2 being preferred.

[0038] The high uniformity multi-optical expansion light engine system provided by this utility model also includes a converging and diffusing lens group 6; the converging and diffusing lens group 6 includes at least one converging and diffusing lens; a first converging and diffusing lens 6-1 is disposed between the excitation light source 1-1 and the dichroic mirror 2; a second converging and diffusing lens 6-2 is disposed between the complementary color light source 1-2 and the dichroic mirror 2; a third converging and diffusing lens 6-3 is disposed between the wavelength conversion device 3 and the dichroic mirror 2; and a fourth converging and diffusing lens 6-4 is disposed between the dichroic mirror 2 and the angle adjustment device 5.

[0039] In summary, this utility model provides a high-uniformity multi-optical-expansion optical engine system, including an optomechanical light source, a dichroic mirror, a wavelength conversion device, an optomechanical system, and an angle adjustment device. The optomechanical light source includes a laser light source and a supplementary light source. The excitation light emitted from the laser light source is reflected by the dichroic mirror and reaches the wavelength conversion device. After conversion by the wavelength conversion device, it becomes excited light, which passes through the dichroic mirror and reaches the angle adjustment device. The reflection by the angle adjustment device allows the excited light to enter the optomechanical system at a more reasonable angle. The supplementary light source emits complementary light, which is reflected by the dichroic mirror and reaches the angle adjustment device. After being adjusted to a reasonable angle, it enters the optomechanical system. This utility model... The system light bar provided by this model does not need to be designed to be very long, thereby saving costs and reducing efficiency loss. At the same time, since the optical expansion of the complementary color light and the laser beam is different, they can share the same light uniformity system to achieve high uniformity. This solves the problems of increased projector size and cost in existing technologies, and decreased laser beam efficiency due to more reflections. Furthermore, the use of a compound eye system requires expanding the three-color laser beams first, which increases optical costs and affects the beam combining efficiency after beam expansion. Additionally, the small exit angle and beam aperture of the complementary color light source result in fewer reflections after beam combining into the light bar than the laser beam, leading to insufficient light uniformity and poor brightness and color uniformity of the image.

[0040] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. After reading the above content, various modifications and substitutions of the present invention will be obvious to those skilled in the art. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solution of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A high-uniformity multi-optical-extended light engine system, characterized by, The light machine light source, a dichroic mirror, a wavelength conversion device, a light machine system, and an angle adjustment device are included. The light machine light source includes an excitation light source and a complementary light source. One side of the dichroic mirror reflects excitation light emitted by the excitation light source onto the wavelength conversion device. The other side of the dichroic mirror reflects complementary light emitted by the complementary light source to the angle adjustment device. The wavelength conversion device is used to convert the excitation light into excited light of a specified wavelength. The excited light enters the angle adjustment device after being transmitted through the dichroic mirror.

2. A high-uniformity multi-optical-extended light engine system as defined in claim 1, wherein, The angle adjustment device is used to adjust the angles of the excited light and the complementary light so that they enter the light machine system.

3. A high-uniformity multi-optical- etendue light engine system as defined in claim 2, wherein, The angle adjustment device includes a first plane mirror and a second plane mirror.

4. A high-uniformity multi-optical- etendue light engine system as defined in claim 3, wherein, The first plane mirror is used to adjust the angle of the excited light entering the light machine system.

5. A high-uniformity multi-optical- etendue light engine system as defined in claim 2, wherein, The second plane mirror is used to adjust the angle of the complementary light entering the light machine system.

6. A high-uniformity multi-optical- etendue light engine system as defined in claim 5, wherein, The first plane mirror and the second plane mirror are arranged in the same plane.

7. A high-uniformity multi-optical- etendue light engine system as defined in claim 5, wherein, The first plane mirror and the second plane mirror do not have spatial hierarchy overlap in the optical path.

8. A high-uniformity multi-optical- etendue light engine system as defined in claim 2, wherein, The first plane mirror and the second plane mirror have the function of reflecting any two or more of the excited light, the excitation light, and the complementary light.

9. A high-uniformity multi-optical- etendue light engine system as described in claim 1, wherein, The first plane mirror and the second plane mirror are not arranged in the same plane. When the second plane mirror is arranged before the light path of the first plane mirror, the second plane mirror has the function of reflecting all the complementary light, reflecting part of the excitation light, and reflecting part of the excited light. The first plane mirror has the function of reflecting the excited light and the excitation light. When the first plane mirror is arranged before the light path of the second plane mirror, the first plane mirror has the function of reflecting the excited light, reflecting the excitation light, and transmitting the complementary light. The second plane mirror has the function of reflecting the complementary light. The first plane mirror and the second plane mirror have the function of angle adjustment in the system. A converging and diffusing lens group is also included. The converging and diffusing lens group includes at least one converging and diffusing lens. A first converging and diffusing lens is arranged between the excitation light source and the dichroic mirror. A second converging and diffusing lens is arranged between the complementary light source and the dichroic mirror. A third converging and diffusing lens is arranged between the wavelength conversion device and the dichroic mirror. A fourth converging and diffusing lens is arranged between the dichroic mirror and the angle adjustment device.

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