JP2010286688A5

JP2010286688A5 -

Info

Publication number: JP2010286688A5
Application number: JP2009140870A
Authority: JP
Filing date: 2009-06-12
Publication date: 2012-07-19
Anticipated expiration: 2029-06-12

Description

本発明に係る投写型表示装置は、
第１の光軸を有し、第１の光束を出射する第１の光源手段と、
前記第１の光源手段の前記第１の光軸と一致しない第２の光軸を有し、第２の光束を出射する第２の光源手段と、
入射端と出射端とを有し、前記入射端に入射された光束を複数回反射させて強度分布が均一化された光束に変換して前記出射端から出射する柱状の光強度均一化手段と、
反射部と透過部とを有し、前記第１の光源手段から出射された前記第１の光束を前記反射部により反射して前記入射端に集光させ、前記第２の光源手段から出射された前記第２の光束を前記透過部を透過させて前記入射端に集光させる反射透過素子と、
前記光強度均一化手段の前記出射端から出射された光束を変調して画像光に変換する画像表示素子と、
前記画像光をスクリーンに投写する投写光学系と
を備え、
前記反射部と前記透過部とは異なる領域に形成されている
ことを特徴とする。 The projection display device according to the present invention is
First light source means having a first optical axis and emitting a first luminous flux;
Second light source means for emitting a second light beam, having a second optical axis that does not coincide with the first optical axis of the first light source means;
A columnar light intensity uniformizing means that has an incident end and an exit end, reflects the light beam incident on the incident end a plurality of times, converts it into a light beam having a uniform intensity distribution, and emits the light from the exit end; ,
A reflection unit and a transmission unit; the first light beam emitted from the first light source unit is reflected by the reflection unit to be condensed at the incident end and is emitted from the second light source unit; A reflective / transmissive element that transmits the second light flux through the transmission unit and collects the second light flux at the incident end;
An image display element that modulates a light beam emitted from the exit end of the light intensity uniformizing means and converts it into image light;
A projection optical system for projecting the image light onto a screen ,
The reflection part and the transmission part are formed in different regions .

Claims

First light source means having a first optical axis and emitting a first luminous flux;
Second light source means for emitting a second light beam, having a second optical axis that does not coincide with the first optical axis of the first light source means;
A columnar light intensity uniformizing means that has an incident end and an exit end, reflects the light beam incident on the incident end a plurality of times, converts it into a light beam having a uniform intensity distribution, and emits the light from the exit end; ,
A reflection unit and a transmission unit; the first light beam emitted from the first light source unit is reflected by the reflection unit to be condensed at the incident end and is emitted from the second light source unit; A reflective / transmissive element that transmits the second light flux through the transmission unit and collects the second light flux at the incident end;
An image display element that modulates a light beam emitted from the exit end of the light intensity uniformizing means and converts it into image light;
A projection optical system for projecting the image light onto a screen ,
The projection display device, wherein the reflection unit and the transmission unit are formed in different regions .

The projection display device according to claim 1, wherein the reflection unit and the transmission unit are formed adjacent to each other and separated by a boundary line.

The boundary line extends so as to be orthogonal to a straight line connecting a position where the incident light amount of the first light beam in the reflecting portion is maximum and a position where the incident light amount of the second light beam in the transmission portion is maximum. The projection display device according to claim 2, wherein the projection display device is a projection display device.

A first condensing position where the first light flux is condensed at the incident end of the light intensity uniformizing means, and a second light collecting position where the second light flux is condensed at the incident end of the light intensity uniformizing means. and condensing position, the projection display device according to any one of up to 3 claim 1, characterized in that spaced apart from each other.

The first light source unit and the second light source means, the claims 1 to 4, characterized in that said first optical axis and the second optical axis is arranged to be substantially perpendicular The projection display device according to any one of the above.

The first light source means and the second light source means are arranged so that the first optical axis and the second optical axis are parallel to each other,
further,
A reflecting mirror for bending the optical path of the first light beam emitted from the first light source means;
The projection display device according to any one of claims 1 to 4, characterized in that said first light beam reflected from the reflection mirror and a relay optical system for guiding the reflection-transmission element.

The relay optical system includes a first lens that converts the first light beam emitted from the first light source unit into parallel light, and the first light beam that has been converted into parallel light by the first lens. A second lens for condensing at the incident end of the light intensity uniformizing means,
The projection display apparatus according to claim 6 , further comprising an adjustment mechanism that moves the first lens along the first optical axis of the first light source unit.

The reflection-transmission element is a projection display device according to any one of claims 1 to 7, characterized in that is obtained by forming a reflective film on the surface of the transparent member.

First light source means having a first optical axis and emitting a first luminous flux;
Second light source means for emitting a second light beam, having a second optical axis that does not coincide with the first optical axis of the first light source means;
A columnar light intensity uniformizing means that has an incident end and an exit end, reflects the light beam incident on the incident end a plurality of times, converts it into a light beam having a uniform intensity distribution, and emits it from the exit end ,
A reflection unit and a transmission unit; the first light beam emitted from the first light source unit is reflected by the reflection unit to be condensed at the incident end and is emitted from the second light source unit; And a reflection / transmission element for condensing the second light flux through the transmission part and condensing at the incident end ,
The reflection part and the transmission part are formed in different regions.
A light source device characterized by that .