CN114613253B - Optical system and display device - Google Patents
Optical system and display device Download PDFInfo
- Publication number
- CN114613253B CN114613253B CN202011432787.0A CN202011432787A CN114613253B CN 114613253 B CN114613253 B CN 114613253B CN 202011432787 A CN202011432787 A CN 202011432787A CN 114613253 B CN114613253 B CN 114613253B
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- Prior art keywords
- wavelength conversion
- conversion material
- lens group
- light
- excitation light
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- 230000003287 optical effect Effects 0.000 title claims abstract description 55
- 238000006243 chemical reaction Methods 0.000 claims abstract description 76
- 230000005284 excitation Effects 0.000 claims abstract description 67
- 230000001902 propagating effect Effects 0.000 claims abstract description 21
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
Abstract
The invention discloses an optical system, which comprises a wavelength conversion material and a lens group, wherein first excitation light and second excitation light respectively irradiate the wavelength conversion material from two sides of the wavelength conversion material, the wavelength conversion material generates excited light under the irradiation of the excitation light, the second excitation light is guided by the lens group to irradiate the wavelength conversion material, and the excited light generated by the wavelength conversion material and propagating towards the side is guided to be emitted, so that the excited light propagating towards the side is separated from the second excitation light. The optical system irradiates the wavelength conversion material with multiple paths of excitation light incident from different directions, so that the wavelength conversion material generates excited light, and the wavelength conversion material can generate more light, thereby improving the brightness of output light. The invention also discloses a display device.
Description
Technical Field
The invention relates to the technical field of optical systems, in particular to an optical system. The invention also relates to a display device.
Background
The application of display devices in various fields is becoming more and more widespread, wherein brightness index is one of important indexes of display devices, and in order to make the display devices have better display performance, the brightness of the display devices is improved, which is a technical subject that those skilled in the art are constantly exploring and continuously improving.
Disclosure of Invention
The invention aims to provide an optical system capable of improving the brightness of output light. The invention further provides a display device.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an optical system includes a wavelength conversion material to which first excitation light and second excitation light are respectively irradiated from both sides of the wavelength conversion material, and a lens group for generating excited light under irradiation of the excitation light;
the lens group guides and irradiates the second excitation light to the wavelength conversion material, and guides and emits the excited light generated by the wavelength conversion material and propagating toward the side, so that the excited light propagating toward the side is separated from the second excitation light.
Preferably, the lens group is specifically configured to guide and propagate the excited light generated by the wavelength conversion material and propagating toward the side so as to emit the excited light as parallel light, or the lens group is specifically configured to guide and propagate the excited light generated by the wavelength conversion material and propagating toward the side so as to emit the excited light as converging form.
Preferably, the second excitation light is incident to the lens group at an included angle between the optical axis of the second excitation light and the optical axis of the lens group, and the preset angle is greater than 0 degree.
Preferably, the preset angle ranges from 20 degrees to 60 degrees, including the end point value.
Preferably, the predetermined angle is determined by the size of the aperture of the other optical device disposed on the second excitation light path, the distance from the other optical device to the lens group, the radius of curvature of the lens group including a lens, the refractive index of the lens group including a lens, or the focal length of the lens group.
Preferably, the calculation formula of the focal length of the lens group including the lens is: f= -nR 1 R 2 /{(n-1)[n(R 2 -R 1 )+(n-1)d]Wherein f represents the effective focal length of the lens comprising the lens, n represents the refractive index of the lens material, d represents the central thickness of the lens, R 1 、R 2 Respectively represent the radii of curvature of the two surfaces of the lens.
Preferably, the lens group is further configured to adjust the second excitation light so that the light spot irradiated to the wavelength conversion material meets a preset requirement.
Preferably, the lens group is specifically configured to focus the excitation light to the wavelength conversion material, and make the light intensity of the light spot irradiated to the wavelength conversion material uniform.
Preferably, the lens group includes any one or a combination of any plurality of positive lenses, negative lenses, convex lenses, concave lenses, or plano-convex lenses.
A display device comprising the optical system described above.
As can be seen from the above-mentioned technical solution, the optical system provided by the present invention includes a wavelength conversion material and a lens group, wherein the first excitation light and the second excitation light respectively irradiate the wavelength conversion material from two sides of the wavelength conversion material, the wavelength conversion material generates excited light under irradiation of the excitation light, wherein the second excitation light is guided by the lens group to irradiate the wavelength conversion material, and the excited light generated by the wavelength conversion material and propagating towards the side is guided to emit, so that the excited light propagating towards the side is separated from the second excitation light. The optical system of the invention irradiates the wavelength conversion material with multiple paths of excitation light incident from different directions, so that the wavelength conversion material generates excited light, and the wavelength conversion material can generate more light, thereby improving the brightness of output light.
The invention also provides display equipment which can achieve the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an optical system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an optical system according to another embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
The embodiment of the invention provides an optical system, which comprises a wavelength conversion material and a lens group, wherein first excitation light and second excitation light respectively irradiate the wavelength conversion material from two sides of the wavelength conversion material, and the wavelength conversion material is used for generating excited light under the irradiation of the excitation light;
the lens group guides and irradiates the second excitation light to the wavelength conversion material, and guides and emits the excited light generated by the wavelength conversion material and propagating toward the side, so that the excited light propagating toward the side is separated from the second excitation light.
The wavelength conversion material is a material that emits light of a predetermined wavelength when irradiated with excitation light. Preferably, the wavelength converting material is distributed in layers, which on the one hand reduces the light generated by excitation of the material traveling laterally within the material, resulting in a reduction in the luminous power density, and on the other hand helps to make the light more easily transmitted through the wavelength converting material.
The lens group refers to an optical assembly formed of one transmission element or a plurality of transmission elements, and is capable of transmitting light therethrough to guide the propagation of the light. The second excitation light is guided to propagate through the lens group to irradiate the wavelength conversion material, and excited light generated by the wavelength conversion material and propagating towards the side where the lens group is located reversely passes through the lens group and is emitted through the lens group to be guided to propagate, so that the excited light is separated from the second excitation light.
The optical system of the embodiment irradiates the wavelength conversion material with multiple paths of excitation light incident from different directions, so that the wavelength conversion material generates excited light, and the wavelength conversion material can generate more light, thereby improving the brightness of output light.
Referring to fig. 1, fig. 1 is a schematic diagram of an optical system according to an embodiment of the invention, and the optical system includes a wavelength conversion material 100 and a lens group 101, wherein a first excitation light 1 irradiates the wavelength conversion material 100 from a side of the wavelength conversion material 100, a second excitation light 2 irradiates the wavelength conversion material 100 through the lens group 101, and the wavelength conversion material 100 generates an excited light 3 propagating toward a side of the lens group 101 under the irradiation of the excitation light. The excited light 3 is collected by the lens group 101, propagates through the lens group 101 and is emitted, so that the emitted excited light 3 and the second excited light 2 are separated, and the excited light 3 forms emitted light.
Alternatively, the second excitation light may be incident to the lens group at an included angle having a preset angle between its optical axis and the optical axis of the lens group, where the preset angle is greater than 0 degrees. Referring to fig. 1, in the optical system shown in fig. 1, an included angle θ between an optical axis of the second excitation light 2 and an optical axis of the lens group 101 is greater than 0 degrees, so that the second excitation light 2 incident on the lens group 101 is incident on the lens group 101 in a manner that its optical axis deviates from the optical axis of the lens group 101, and the excited light 3 generated by the wavelength conversion material 100 is emitted after passing through the lens group 101, and the formed emitted light propagates along the optical axis direction of the lens group 101, so that the emitted light formed by the excited light 3 is deviated from the second excitation light 2 correspondingly, thereby realizing separation of the excited light from the second excitation light.
Optionally, in practical applications, the preset angle θ may be set and determined according to the specific structural requirement of the system, where the specific preset angle θ may be determined according to the caliber of another optical device disposed on the second excitation light path, the distance between the other optical device and the lens group, the radius of curvature of the lens group including the lens, the refractive index of the lens group including the lens, or the focal length of the lens group, and the optical path structure of the optical system may be arranged in combination with the caliber of another optical device disposed on the second excitation light path, the distance between the other optical device and the lens group, the focal length of the lens group, and the preset angle θ, so as to ensure that the incident second excitation light 2 irradiates the wavelength conversion material 100 after passing through the lens group 101, and the excited light 3 can be separated from the excitation light 2 after being emitted through the lens group 101.
Specifically, the lens group includes a calculation formula of a focal length of the lens: f= -nR 1 R 2 /{(n-1)[n(R 2 -R 1 )+(n-1)d]Wherein f represents the effective focal length of the lens comprising the lens, n represents the refractive index of the lens material, d represents the central thickness of the lens, R 1 、R 2 Respectively represent the radii of curvature of the two surfaces of the lens.
The preset angle is inconvenient to be too large in practical application. The preferred range of the preset angle θ may be 20 degrees to 60 degrees, inclusive.
The excited light 3 generated by the wavelength conversion material 100 is collected by the lens group 101, and propagates through the lens group 101 to form outgoing light, and optionally, the lens group 101 may be specifically configured to propagate the excited light generated by the wavelength conversion material 100 and propagating toward the present side, and emit the excited light as parallel light. In the optical system shown in fig. 1, the excited light 3 passes through the lens group 101 and is emitted as parallel light.
Alternatively, the lens group may be specifically configured to guide and propagate the excited light generated by the wavelength conversion material and propagating toward the present side to emit the excited light in a converging form. Referring to fig. 2, fig. 2 is a schematic diagram of an optical system provided in another embodiment, and excited light 3 generated by exciting the wavelength conversion material 100 and propagating towards a side of the lens assembly 102 is emitted in a converging form after passing through the lens assembly 102.
In practical applications, the lens group used in the optical system is not limited to the above-mentioned emission of the excited light in parallel or in a converging form, and the lens group may also emit the excited light in other forms to form the outgoing light, which is also within the scope of the present invention. The outgoing form of the lens group to the outgoing light can be set according to the specific application requirements of the optical system.
The second excitation light 2 is irradiated to the wavelength conversion material 100 through the lens group 101, and it is further preferable that the lens group 101 is also used to adjust the second excitation light 2 so that the spot irradiated to the wavelength conversion material 100 satisfies a preset requirement. In practical applications, the lens group may be designed according to the excitation requirement of the wavelength conversion material 100, and optionally, the lens group 101 may adjust the spot shape, the spot size, or the divergence angle of the excitation light, or may optimize the brightness uniformity of the excitation light spot according to the requirement.
Alternatively, the lens group 101 may be specifically configured to focus the excitation light into the wavelength conversion material 100 and make the intensity of the spot light irradiated to the wavelength conversion material 100 uniform. In this way, the lens group 101 can collect light emitted by the light source and effectively utilize as much light as possible, and the damage to the wavelength conversion material caused by the energy peak of the light spot irradiated to the wavelength conversion material is avoided, so that the service life of the wavelength conversion material can be prolonged while the excitation efficiency is improved.
Alternatively, in practice, the lens group 101 may include any one or a combination of any plurality of positive lenses, negative lenses, convex lenses, concave lenses, or plano-convex lenses, but is not limited thereto, and the lens group 101 may also adopt other structures.
Correspondingly, the embodiment of the invention also provides display equipment, which comprises the optical system.
The display device of this embodiment employs an optical system including a wavelength conversion material to which first excitation light and second excitation light are respectively irradiated from both sides of the wavelength conversion material, the wavelength conversion material generating excited light under irradiation of the excitation light, wherein the second excitation light is guided by the lens group to be irradiated to the wavelength conversion material, and the excited light generated by the wavelength conversion material and propagating toward the present side is guided to be emitted, so that the excited light propagating toward the present side is separated from the second excitation light, and the optical system irradiates the wavelength conversion material with multiple paths of excitation light incident from different directions, so that the wavelength conversion material can generate more light, thereby improving the output luminance, and further improving the brightness of the display device.
The above describes in detail an optical system and a display device provided by the present invention. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. An optical system comprising a wavelength conversion material and a lens group, wherein first excitation light and second excitation light are respectively irradiated to the wavelength conversion material from both sides of the wavelength conversion material, the wavelength conversion material being for generating excited light under irradiation of the excitation light;
the lens group is used for guiding and irradiating the second excitation light to the wavelength conversion material and guiding and emitting the excited light generated by the wavelength conversion material and propagating towards the side, so that the excited light propagating towards the side is separated from the second excitation light;
the second excitation light is incident to the lens group in an included angle with a preset angle between the optical axis of the second excitation light and the optical axis of the lens group, wherein the preset angle ranges from 20 degrees to 60 degrees and comprises end point values;
the lens group is also used for adjusting the second excitation light so that the light spot irradiated to the wavelength conversion material meets the preset requirement.
2. The optical system according to claim 1, wherein the lens group is specifically configured to guide and propagate the excited light generated by the wavelength conversion material and propagating toward the present side so as to emit the excited light in parallel light, or the lens group is specifically configured to guide and propagate the excited light generated by the wavelength conversion material and propagating toward the present side so as to emit the excited light in a converged form.
3. The optical system of claim 1, wherein the predetermined angle is determined by a size of a caliber of another optical device disposed on the second excitation light path, a distance from the other optical device to the lens group, a radius of curvature of the lens group including a lens, a refractive index of the lens group including a lens, or a focal length of the lens group.
4. The optical system of claim 1, wherein the lens group includes a focal length of the lens having a formula: f= -nR 1 R 2 /{(n-1)[n(R 2 -R 1 )+(n-1)d]Wherein f represents the effective focal length of the lens comprising the lens, n represents the refractive index of the lens material, d represents the central thickness of the lens, R 1 、R 2 Respectively represent the radii of curvature of the two surfaces of the lens.
5. The optical system of claim 1, wherein the lens group is specifically configured to focus the excitation light into the wavelength conversion material and make the intensity of the spot light irradiated to the wavelength conversion material uniform.
6. The optical system of claim 1, wherein the lens group comprises any one or a combination of any plurality of positive, negative, convex, concave, or plano-convex lenses.
7. A display device comprising the optical system of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011432787.0A CN114613253B (en) | 2020-12-09 | 2020-12-09 | Optical system and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011432787.0A CN114613253B (en) | 2020-12-09 | 2020-12-09 | Optical system and display device |
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| Publication Number | Publication Date |
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| CN114613253A CN114613253A (en) | 2022-06-10 |
| CN114613253B true CN114613253B (en) | 2024-01-23 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252169A (en) * | 2010-04-07 | 2011-11-23 | 深圳市光峰光电技术有限公司 | High-brightness excitation method and light emitting device based on optical wavelength conversion |
| CN103631077A (en) * | 2013-12-18 | 2014-03-12 | 吴震 | Light-emitting device and projection display device |
| CN204256352U (en) * | 2014-10-12 | 2015-04-08 | 杨毅 | LASER Light Source and projection arrangement |
| CN105911805A (en) * | 2013-02-05 | 2016-08-31 | 深圳市光峰光电技术有限公司 | Compact-structure light source system with compact structure |
| CN205880483U (en) * | 2016-04-06 | 2017-01-11 | 上海蓝湖照明科技有限公司 | Illuminator and relevant projecting system and lighting system |
| WO2019061823A1 (en) * | 2017-09-26 | 2019-04-04 | 深圳光峰科技股份有限公司 | Light source system and projection device |
| WO2019109451A1 (en) * | 2017-12-05 | 2019-06-13 | 深圳光峰科技股份有限公司 | Light source system, automatic adjustment method for light source system, and projection device |
| CN110716380A (en) * | 2019-11-25 | 2020-01-21 | 成都极米科技股份有限公司 | Light source system and projector |
| JP2020024318A (en) * | 2018-08-08 | 2020-02-13 | セイコーエプソン株式会社 | Light source device and projector |
| CN211528895U (en) * | 2020-03-30 | 2020-09-18 | 无锡视美乐激光显示科技有限公司 | Light source adjusting device, light source system and projection system |
| EP3722874A1 (en) * | 2019-03-20 | 2020-10-14 | Ricoh Company, Ltd. | Light source device, image projection apparatus, light source optical system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5767444B2 (en) * | 2010-06-16 | 2015-08-19 | ソニー株式会社 | Light source device and image projection device |
-
2020
- 2020-12-09 CN CN202011432787.0A patent/CN114613253B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252169A (en) * | 2010-04-07 | 2011-11-23 | 深圳市光峰光电技术有限公司 | High-brightness excitation method and light emitting device based on optical wavelength conversion |
| CN105911805A (en) * | 2013-02-05 | 2016-08-31 | 深圳市光峰光电技术有限公司 | Compact-structure light source system with compact structure |
| CN103631077A (en) * | 2013-12-18 | 2014-03-12 | 吴震 | Light-emitting device and projection display device |
| CN204256352U (en) * | 2014-10-12 | 2015-04-08 | 杨毅 | LASER Light Source and projection arrangement |
| CN205880483U (en) * | 2016-04-06 | 2017-01-11 | 上海蓝湖照明科技有限公司 | Illuminator and relevant projecting system and lighting system |
| WO2019061823A1 (en) * | 2017-09-26 | 2019-04-04 | 深圳光峰科技股份有限公司 | Light source system and projection device |
| WO2019109451A1 (en) * | 2017-12-05 | 2019-06-13 | 深圳光峰科技股份有限公司 | Light source system, automatic adjustment method for light source system, and projection device |
| JP2020024318A (en) * | 2018-08-08 | 2020-02-13 | セイコーエプソン株式会社 | Light source device and projector |
| EP3722874A1 (en) * | 2019-03-20 | 2020-10-14 | Ricoh Company, Ltd. | Light source device, image projection apparatus, light source optical system |
| CN110716380A (en) * | 2019-11-25 | 2020-01-21 | 成都极米科技股份有限公司 | Light source system and projector |
| CN211528895U (en) * | 2020-03-30 | 2020-09-18 | 无锡视美乐激光显示科技有限公司 | Light source adjusting device, light source system and projection system |
Non-Patent Citations (2)
| Title |
|---|
| Storage and transfer of optical excitation energy in GaInP epilayer: Photoluminescence signatures;Shijie Xu et al.;《Journal of Materials Science & Technology》;第35卷(第7期);1364-1367 * |
| 面向产业化应用的双光束超分辨数据存储技术;骆志军 等;《光电工程》;第46卷(第03期);94-100 * |
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| CN114613253A (en) | 2022-06-10 |
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