CN105867058A - Multi-light-source coupling optical system of projector - Google Patents
Multi-light-source coupling optical system of projector Download PDFInfo
- Publication number
- CN105867058A CN105867058A CN201610304535.7A CN201610304535A CN105867058A CN 105867058 A CN105867058 A CN 105867058A CN 201610304535 A CN201610304535 A CN 201610304535A CN 105867058 A CN105867058 A CN 105867058A
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- CN
- China
- Prior art keywords
- light guiding
- lamp guide
- solid lamp
- guiding rod
- optical system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G03B21/2013—Plural light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0994—Fibers, light pipes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
-
- 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
- G03B21/208—Homogenising, shaping of the illumination light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a multi-light-source coupling optical system of a projector. The system comprises multiple solid light guiding rods which are vertically arranged in parallel and are different in length and a hollow light guiding rod arranged behind the solid light guiding rods; each solid light guiding rod is provided with an oblique incident surface and a vertical emergent surface, the two ends of the hollow light guiding rod are provided with an incident surface and an emergent surface which are perpendicular to the side face respectively, the side faces of the solid light guiding rods are attached to one another, the emergent surfaces of the solid light guiding rods are attached to the incident surface of the hollow light guiding rod, the sum of the areas of the emergent surfaces of the solid light guiding rods is equal to the area of the incident surface of the hollow light guiding rod, and the side face of each solid light guiding rod is provided with a light source. According to the system, light of two or more projection lamp bulbs is coupled together, and the luminance of the projector is fundamentally improved; meanwhile, oval light spots of the projection lamp bulbs are shaped into rectangular light spots, the lengths of the light guiding rods are reasonably designed, and then the illumination uniformity of the emergent rectangular light spots is increased to 95% or above.
Description
Technical field
The invention belongs to optical field, be specifically related to the multiple light courcess coupling optical system of a kind of scialyscope, this optical system is mainly used in double lamp based on DLP or many lamps projection display apparatus.
Background technology
The projection products of different brightness has been released in scialyscope market in recent years, it is mainly used in home entertaining, commercial affairs joint performance, game simulation, the exhibition field such as label, theater, in these applications, a lot of application require that scialyscope (engineering scialyscope, d-cinema projectors etc.) has higher brightness.
Light engine is the core in projection display optical system structure, and illuminator then occupies the sizable block cost of light engine.Illuminator is the important component part of projection machine optical system structure, decides the performances such as the capacity usage ratio of system, illumination uniformity and contrast.
In optical engine system, the principal element affecting capacity usage ratio includes that the output light flux distribution of light source, lighting system structure, the numerical aperture of system limit and the transflector of various optical element and absorption loss etc..Wherein due to limitation and the restriction of material selection of current design, it is the least that the amount loss that optical element self causes can improve degree, and the numerical aperture of system is mainly limited by the characteristic of spatial light modulator and the numerical aperture of projection objective, if needing bigger raising, can be to affect picture element as cost.
The circle just with certain angle of divergence that light source sends or oval hot spot, and project the square focus spot that hot spot is 4:3 or 16:9 of needs, accordingly, it would be desirable to the hot spot sending light source carries out shaping, become, from circular light spot, the square focus spot that needs by hot spot.
Circular light spot can be converted into square focus spot by fly's-eye lens illuminator and lamp guide illuminator.Its ultimate principle is all by the array of source that single source imaging is two dimension, and by the picture superposition of array of source, to realize the illumination spot of high uniformity.
Summary of the invention
It is an object of the invention to according to the deficiencies in the prior art, there is provided a kind of can be coupled in a hollow light guiding rod by many solid lamp guides by the light beam that double lamps or many lamps send, thus export the multiple light courcess coupling optical system of the square illumination spot of the uniform-illumination of high brightness.
The technical solution adopted for the present invention to solve the technical problems is: the multiple light courcess coupling optical system of a kind of scialyscope, solid lamp guide and the hollow light guiding rod being arranged in solid lamp guide rear including the many different lengths discharged side by side up and down, one end of described solid lamp guide has an oblique incidence face in a certain angle with side, the other end has an exit facet vertical with side, what described hollow light guiding was excellent is respectively arranged at two ends with the plane of incidence and the exit facet being perpendicular to side, fit each other in the side of described many solid lamp guides, the plane of incidence laminating that the exit facet of solid lamp guide is excellent with hollow light guiding, the area sum of many solid lamp guide exit facets is equal to the area of the hollow light guiding rod plane of incidence, the side of every solid lamp guide is provided with a light source.
The multiple light courcess coupling optical system of described a kind of scialyscope, the plane of incidence inclination angle of its solid lamp guide is 45 °, and the described plane of incidence is coated with internal reflection film.
The multiple light courcess coupling optical system of described a kind of scialyscope, the ratio of width to height of the plane of incidence of its solid lamp guide is a/2:b, and the ratio of width to height of the plane of incidence of described hollow light guiding rod is a:b.
The multiple light courcess coupling optical system of described a kind of scialyscope, the ratio of width to height of its hollow light guiding rod is 16:9 or 16:10 or 4:3.
The multiple light courcess coupling optical system of described a kind of scialyscope, its solid lamp guide includes the solid lamp guide of side by side up and down second and the first solid lamp guide, and the length of described first solid lamp guide is more than the second solid lamp guide.
The multiple light courcess coupling optical system of described a kind of scialyscope, its first solid lamp guide is quartz glass bar or the K9 Glass rod of 5 × 4 × 115mm；Second solid lamp guide is quartz glass bar or the K9 Glass rod of 5 × 4 × 15mm.
The multiple light courcess coupling optical system of described a kind of scialyscope, four strip reflecting mirror gluings that its hollow light guiding rod is more than 99% by specular reflectivity form.The internal diameter size of hollow light guiding rod is 5 × 8 × 15mm.
The invention has the beneficial effects as follows:
1, in the present invention, the plane of incidence of the first solid lamp guide and the second solid lamp guide all carries 45 ° of reflectings surface, light source is respectively positioned on the side of solid lamp guide, light beam is entered solid lamp guide by solid lamp guide side, after 45 ° reflect, light beam is totally reflected in solid lamp guide, and propagate along solid lamp guide, so the light beam coupling of latter two solid lamp guide is in hollow light guiding rod, after homogenize through the shaping again of hollow light guiding rod and to become rectangular uniform illumination spot.
2, in the present invention, the length difference of the first solid lamp guide and the second solid lamp guide determines according to overall dimensions and the spacing of two light sources；First solid lamp guide in the present invention, the second solid lamp guide and the width of end face of hollow light guiding rod, coca determine according to size and the etendue amount conservation of selected DMD, and location, size are accurate and flexible and changeable.
3, in the present invention, the material of the first solid lamp guide, the second solid lamp guide and hollow light guiding rod is quartz glass or K9 glass, price material benefit, beneficially mass production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is hollow light guiding rod exit end X-direction illuminance uniformity schematic diagram of the present invention；
Fig. 3 is hollow light guiding rod exit end Y-direction illuminance uniformity schematic diagram of the present invention；
Fig. 4 is hollow light guiding rod exit end illuminance uniformity schematic diagram of the present invention.
Each reference is: 1 first solid lamp guide, 2 second solid lamp guides, 3 hollow light guiding rods.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
nullThe invention discloses the multiple light courcess coupling optical system of a kind of scialyscope，It is more than hollow light guiding the rod 3 and Duo Gen solid lamp guides different in size of four strip reflecting mirror gluings of 99% by specular reflectivity including one，Many solid lamp guides discharge the most side by side，Fit each other in the side of solid lamp guide，Solid lamp guide and hollow light guiding rod 3 are in tandem，The solid lamp guide plane of incidence is to be the inclined plane of 45 ° with side，The plane of incidence is coated with internal reflection film，Solid lamp guide exit facet and hollow light guiding rod 3 planes of incidence are perpendicular with side，The plane of incidence of the exit facet of solid lamp guide and hollow light guiding rod 3 is fitted and is positioned in the internal diameter of hollow light guiding rod 3，The area sum of many described solid lamp guide exit facets is equal to the area of the hollow light guiding rod plane of incidence，The side of every solid lamp guide is provided with one，The ratio of width to height of the plane of incidence of the most solid lamp guide is a/2:b，The ratio of width to height of the plane of incidence of described hollow light guiding rod 3 is a:b，Width a and height b numerical value according to DMD(digital micromirror array) size and etendue amount conservation determine，The relevant position of the side of many described solid lamp guides is respectively arranged with light source，A detector surface is added at hollow light guiding rod 3 exit end 1mm，Detector is divided into 3 × 3 squares，Illuminance uniformity according to DCI standard calculating detector surface，The length of lamp guide is determined according to illuminance uniformity.
Embodiment
1
As a basic embodiment, as shown in Figure 1, optical system of the present invention includes first solid lamp guide the 1, second solid lamp guide 2 and hollow light guiding rod 3, first solid lamp guide is quartz glass bar or the K9 Glass rod of 5 × 4 × 115mm, second solid lamp guide is quartz glass bar or the K9 Glass rod of 5 × 4 × 15mm, the internal diameter size of hollow light guiding rod 3 is 5mm × 8mm × 15mm, and the ratio of width to height a:b of hollow light guiding rod 3 is 16:10, two the most corresponding light sources of solid lamp guide.
In scialyscope illumination path, the plane of incidence size of lamp guide is less, and the volume of projection bulb is relatively big, if only with a projection bulb, before and after lamp guide is placed on the picture point of projection bulb；If using Liang Ge projection bulb, then can be due to projection bulb's own vol, the spacing between Liang Ge projection bulb will be bigger, it is impossible to be coupled in same lamp guide simultaneously, thus limit the gross energy of light source of projector, namely limit the raising of scialyscope overall brightness.
In the present embodiment, Liang Ge projection bulb (i.e. light source) is positioned at the side of solid lamp guide, the light that two light sources send is respectively radiated on the plane of incidence of two solid lamp guides, after 45 ° of inclined plane reflections, light beam is turned back 90 ° and is propagated along solid lamp guide, solid lamp guide is totally reflected, two light beams enter hollow light guiding rod 3 after solid lamp guide outgoing, and in hollow light guiding rod 3, there is multiple reflections, finally, light beam is from hollow light guiding rod 3 injection, and the hot spot length-width ratio of outgoing is 16:10.
The light beam that Liang Ge projection bulb sends becomes the Uniform Illumination hot spot of 8mm × 5mm after the present invention, arranges dummy detector at hollow light guiding rod exit end, and analyzes the energy density of hot spot, and the Energy distribution of hot spot X and Y-direction is more uniform as shown in Figures 2 and 3；Dummy detector being divided into 3 × 3 unit, analyzes the mean energy density on each unit, as shown in Figure 4, the maximum energy-density of cell is 561.7w/cm2, minimum energy density is 547.1 w/cm2, the mean energy density of 9 cells is 554.2 w/cm2, the illuminance uniformity understanding hot spot through computational analysis has reached 97.4%, and the repeated steering of illumination spot is irradiated to digital micromirror array (DMD), enters projection lens, be finally projected on giant-screen after digital micromirror array (DMD) reflects.
Optical system of the present invention is by the optical coupling of two or more projection bulbs together, the brightness of scialyscope is improve from root, the oval hot spot of projection bulb is shaped as rectangle simultaneously, and by the length of appropriate design lamp guide, the illuminance uniformity of outgoing square focus spot has been brought up to more than 95%.
Embodiment
2
As different from Example 1, optical system of the present invention includes the three short different solid lamp guide of root length and hollow light guiding rods 3, and the area sum of the solid lamp guide exit facet of three solid lamp guides is equal to the area of the hollow light guiding rod plane of incidence；The ratio of width to height a:b of hollow light guiding rod 3 internal diameters is 16:9 or 16:10 or 4:3.
Embodiment
3
As different from Example 1, optical system of the present invention includes the four short different solid lamp guide of root length and hollow light guiding rods 3, and the area sum of the solid lamp guide exit facet of four solid lamp guides is equal to the area of the hollow light guiding rod plane of incidence.The ratio of width to height a:b of hollow light guiding rod 3 internal diameters is 16:9 or 16:10 or 4:3.
Embodiment
4
As different from Example 1, the cross section of two solid lamp guides in optical system of the present invention is identical, and the plane of incidence of two solid lamp guides is positioned at the both sides of hollow light guiding rod 3 normals, thus Liang Ge projection bulb is positioned at the side of two solid lamp guides.
Embodiment
5
As different from Example 1, the ratio of width to height of the hollow light guiding rod 3 of optical system of the present invention is 16:9 or 4:3.
The present invention can be by increasing the quantity of light source, the brightness of projection display apparatus is improved from source, but the restriction due to the size of light source own, it is difficult to be placed in two light sources the incidence end of single lamp guide simultaneously, therefore, the optocoupler that multiple light sources send is combined into the square illumination spot of brightness uniformity by the present invention.
Optical system of the present invention not only solves the difficult problem that single lamp brightness is inadequate, and the ellipse light spot that lamp sends can homogenize the rectangular light spots being shaped as brightness uniformity.
The principle of above-described embodiment only illustrative present invention and effect thereof; and the embodiment that part is used, for the person of ordinary skill of the art, without departing from the concept of the premise of the invention; can also make some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (9)
1. the multiple light courcess coupling optical system of a scialyscope, it is characterized in that: include the solid lamp guide of many different lengths of discharge side by side up and down and be arranged in hollow light guiding rod (3) at solid lamp guide rear, one end of described solid lamp guide has an oblique incidence face in a certain angle with side, the other end has an exit facet vertical with side, described hollow light guiding rod (3) be respectively arranged at two ends with the plane of incidence and the exit facet being perpendicular to side, fit each other in the side of described many solid lamp guides, the plane of incidence laminating of the exit facet of solid lamp guide and hollow light guiding rod (3), the area sum of many solid lamp guide exit facets is equal to the area of hollow light guiding rod (3) plane of incidence, the side of every solid lamp guide is provided with a light source.
The multiple light courcess coupling optical system of a kind of scialyscope the most according to claim 1, it is characterised in that the plane of incidence inclination angle of described solid lamp guide is 45 °, and the described plane of incidence is coated with internal reflection film.
The multiple light courcess coupling optical system of a kind of scialyscope the most according to claim 1, it is characterised in that the ratio of width to height of the plane of incidence of described solid lamp guide is a/2:b, and the ratio of width to height of the plane of incidence of described hollow light guiding rod (3) is a:b.
The multiple light courcess coupling optical system of a kind of scialyscope the most according to claim 3, it is characterised in that the ratio of width to height of described hollow light guiding rod (3) is 16:9 or 16:10 or 4:3.
5. according to the multiple light courcess coupling optical system of a kind of scialyscope described in claim 1 or 2 or 3 or 4, it is characterized in that, described solid lamp guide includes the solid lamp guide of side by side up and down second (2) and the first solid lamp guide (1), and the length of described first solid lamp guide (1) is more than the second solid lamp guide (2).
The multiple light courcess coupling optical system of a kind of scialyscope the most according to claim 5, it is characterised in that described quartz glass bar or K9 Glass rod that the first solid lamp guide (1) is 5 × 4 × 115mm.
The multiple light courcess coupling optical system of a kind of scialyscope the most according to claim 5, it is characterised in that described quartz glass bar or K9 Glass rod that the second solid lamp guide (2) is 5 × 4 × 15mm.
The multiple light courcess coupling optical system of a kind of scialyscope the most according to claim 5, it is characterised in that four strip reflecting mirror gluings that described hollow light guiding rod (3) is more than 99% by specular reflectivity form.
The multiple light courcess coupling optical system of a kind of scialyscope the most according to claim 8, it is characterised in that the internal diameter size of described hollow light guiding rod (3) is 5 × 8 × 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610304535.7A CN105867058A (en) | 2016-05-10 | 2016-05-10 | Multi-light-source coupling optical system of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610304535.7A CN105867058A (en) | 2016-05-10 | 2016-05-10 | Multi-light-source coupling optical system of projector |
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| CN105867058A true CN105867058A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610304535.7A Pending CN105867058A (en) | 2016-05-10 | 2016-05-10 | Multi-light-source coupling optical system of projector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663882A (en) * | 2018-04-16 | 2018-10-16 | 苏州佳世达光电有限公司 | Light-source system and the method for generating the light beam of light combination with target brightness value |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000181376A (en) * | 1998-12-16 | 2000-06-30 | Toshiba Corp | Projection type display device |
| CN1816766A (en) * | 2003-07-03 | 2006-08-09 | 汤姆森特许公司 | Lighting system enabling combination of several light beams |
| CN101211014A (en) * | 2006-12-27 | 2008-07-02 | 鸿富锦精密工业（深圳）有限公司 | Integral column |
| CN101311815A (en) * | 2007-05-22 | 2008-11-26 | 中强光电股份有限公司 | Light uniformization element |
| CN101359157A (en) * | 2007-08-01 | 2009-02-04 | 台达电子工业股份有限公司 | Light-collecting device for projection apparatus |
-
2016
- 2016-05-10 CN CN201610304535.7A patent/CN105867058A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000181376A (en) * | 1998-12-16 | 2000-06-30 | Toshiba Corp | Projection type display device |
| CN1816766A (en) * | 2003-07-03 | 2006-08-09 | 汤姆森特许公司 | Lighting system enabling combination of several light beams |
| CN101211014A (en) * | 2006-12-27 | 2008-07-02 | 鸿富锦精密工业（深圳）有限公司 | Integral column |
| CN101311815A (en) * | 2007-05-22 | 2008-11-26 | 中强光电股份有限公司 | Light uniformization element |
| CN101359157A (en) * | 2007-08-01 | 2009-02-04 | 台达电子工业股份有限公司 | Light-collecting device for projection apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663882A (en) * | 2018-04-16 | 2018-10-16 | 苏州佳世达光电有限公司 | Light-source system and the method for generating the light beam of light combination with target brightness value |
| CN108663882B (en) * | 2018-04-16 | 2021-01-05 | 苏州佳世达光电有限公司 | Light source system and method for generating light combination beam with target brightness value |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 430223 No. 9 Ming Ze street, mien Shan development area, Jiangxia District, Wuhan, Hubei Applicant after: Jiuzhiyang Infrared System Co., Ltd. Address before: 430223 Jiangxia City, Wuhan province sunshine road, No. 717, Applicant before: Jiuzhiyang Infrared System Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160817 |