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1. WO2012060065 - PROJECTOR DEVICE

Publication Number WO/2012/060065
Publication Date 10.05.2012
International Application No. PCT/JP2011/005868
International Filing Date 20.10.2011
IPC
G03B 21/00 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS 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
21Projectors or projection-type viewers; Accessories therefor
G02B 17/08 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
17Systems with reflecting surfaces, with or without refracting elements
08Catadioptric systems
CPC
G02B 26/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
G03B 21/008
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS 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
21Projectors or projection-type viewers; Accessories therefor
005Projectors using an electronic spatial light modulator but not peculiar thereto
008using micromirror devices
G03B 21/2013
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS 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
21Projectors or projection-type viewers; Accessories therefor
14Details
20Lamp housings
2006characterised by the light source
2013Plural light sources
G03B 21/2066
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS 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
21Projectors or projection-type viewers; Accessories therefor
14Details
20Lamp housings
2066Reflectors in illumination beam
H04N 9/3111
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
12Picture reproducers
31Projection devices for colour picture display ; , e.g. using electronic spatial light modulators [ESLM]
3102using two-dimensional electronic spatial light modulators
3111for displaying the colours sequentially, e.g. by using sequentially activated light sources
H04N 9/315
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
12Picture reproducers
31Projection devices for colour picture display ; , e.g. using electronic spatial light modulators [ESLM]
3141Constructional details thereof
315Modulator illumination systems
Applicants
  • 富士フイルム株式会社 FUJIFILM CORPORATION [JP]/[JP] (AllExceptUS)
  • 馬場 智之 BABA, Tomoyuki [JP]/[JP] (UsOnly)
Inventors
  • 馬場 智之 BABA, Tomoyuki
Agents
  • 柳田 征史 YANAGIDA, Masashi
Priority Data
2010-24647902.11.2010JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PROJECTOR DEVICE
(FR) DISPOSITIF PROJECTEUR
(JA) プロジェクタ装置
Abstract
(EN)
Disclosed is a thin illumination optical system for use in a projector device. The disclosed illumination optical system in used in a projector device which guides light emitted from a light source to a TIR prism (20), optically modulates light which has been totally reflected on the total reflection surface of said prism (20) by reflecting said light with a DMD (23) having a rectangular surface, and projects said optically modulated light onto a screen. The TIR prism (20) of the illumination optical system is configured such that a projection line, formed by a normal line N normal to said total reflection surface being projected perpendicularly to the surface of the DMD (23), forms an angle other than 90° to a micromirror rotation axis (R) of said DMD (23); such that an emitted light projection line, formed by the principal ray of the light beam (Lout) emitted from the aforementioned total reflection surface being projected perpendicularly to the surface of the DMD (23), forms an angle of 90° with the micromirror rotation axis (R), and also such that an incident light projection line, formed by the principal light beam of a light bundle (Lin) incident to the aforementioned total reflection surface being projected perpendicularly to the surface of the DMD (23), is, all the way to the end point, on the same side as the emitted light projection line of a straight line (Q) extending parallel to the long side of the DMD (23).
(FR)
L'invention porte sur un système optique d'éclairage mince destiné à être utilisé dans un dispositif projecteur. Le système optique d'éclairage décrit est utilisé dans un dispositif projecteur qui guide de la lumière émise par une source de lumière jusqu'à un prisme TIR (20), module optiquement de la lumière qui a été totalement réfléchie sur la surface de réflexion totale dudit prisme (20) par réflexion de ladite lumière à l'aide d'un DMD (23) ayant une surface rectangulaire, et projette ladite lumière optiquement modulée sur un écran. Le prisme TIR (20) du système optique d'éclairage est configuré de manière qu'une ligne de projection, formée par une ligne normale N perpendiculaire à ladite surface de réflexion totale projetée perpendiculairement sur la surface du DMD (23), forme un angle autre que 90° par rapport à un axe de rotation de micro-miroir (R) dudit DMD (23); de manière qu'une ligne de projection de lumière émise, formée par le rayon principal du faisceau de lumière (Lout) émis par la surface de réflexion totale susmentionnée projetée perpendiculairement à la surface du DMD (23), forme un angle de 90° par rapport à l'axe de rotation de micro-miroir (R) et également de manière qu'une ligne de projection de lumière incidente, formée par le faisceau de lumière principal d'un faisceau de lumière (Lin) incident sur ladite surface de réflexion totale susmentionnée projetée perpendiculairement à la surface du DMD (23), se trouve, sur toute son étendue jusqu'au point d'extrémité, du même côté que la ligne de projection de lumière émise d'une ligne droite (Q) s'étendant parallèlement au grand côté du DMD (3).
(JA)
【課題】プロジェクタ装置用の照明光学系を薄型化する。 【解決手段】光源から発せられた光をTIRプリズム(20)に導き、その全反射面で全反射させた光を長方形の表面を有するDMD(23)で反射させることにより光変調し、光変調後の光をスクリーンに投影するプロジェクタ装置に用いられる照明光学系において、TIRプリズム(20)を、その全反射面の法線NをDMD(23)の表面に垂直投影した投影線が、該DMD(23)のマイクロミラー回動軸(R)と90°以外の角度を成し、上記全反射面から出射する光束(Lout)の主光線をDMD(23)の表面に垂直投影した出射光投影線がマイクロミラー回動軸(R)と90°の角度を成し、そして上記全反射面に入射する光束(Lin)の主光線をDMD(23)の表面に垂直投影した入射光投影線が、その終点を通ってDMD(23)の長辺に平行に延びる直線(Q)に関して、出射光投影線と同じ側に有るように構成する。
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