Image display apparatus
AssigneeVictor Company of Japan, Ltd.
InventorsYu Yoshikawa, Takatsugu Aizaki, Tetsuji Suzuki, Hiroshi Watanabe
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Abstract
The present invention includes a reflection portion which light-modulates three primary color lights by three rectangular reflective liquid crystal light modulators, then color-combine the light-modulated lights and reflects the resultant light; and a projection lens which projects the reflected color-combined light onto a plane mirror. The three reflective light modulators are arranged in such a manner that their long side directions coincide with a perpendicular direction, and two of the three reflective light modulators are arranged in such a manner that their short side directions become parallel with a projecting direction of image light from a color separation/combination optical system.
Claims2
An image display apparatus which displays a projection image onto a screen, comprising:
- generating means for generating three primary color lights;
- three rectangular reflective light modulators which light-modulate the respective three primary color lights in accordance with an image signal;
- a color combination optical system which combines emitted lights light-modulated and reflected by the three reflective light modulators and emits the combined light as image light;
- a reflection portion which reflects the image light;
- a projection lens which projects the image light reflected by the reflection portion;
- and
- a plane mirror which is arranged at a predetermined angle with respect to the screen and reflects the image light projected by the projection lens in a direction of the screen,
- wherein the three reflective light modulators are arranged in such a manner that their long side directions coincide with a perpendicular direction, and two of the three reflective light modulators are arranged in such a manner that their short side directions become parallel with an emitting direction of the image light from the color combination optical system,
- wherein, when the predetermined angle is θM (θM<45°), a longitudinal direction of the screen is a Y axis, a lateral direction of the same is an X axis, a vertical direction of the same is a Z axis, a rectangular coordinate in which an original point is a center of the reflection portion is set, an incident light axis of the image light entering the reflection portion is in an XZ plane formed by the X axis and the Z axis, an angle formed by the incident light axis and the X axis is θ1 (a positive angle larger than 0°), an emitting light axis of the image light reflected by the reflection portion is in a YZ plane formed by the Y axis and the Z axis, and an angle formed by the emitting light axis and the Y axis is θ2 (a positive angle larger than 0°),
- the reflection portion is arranged so that a perpendicular line extending to the reflection portion is in an XY plane formed by the X axis and the Y axis, so that an angle of 45° is formed by the perpendicular line and the Y axis, and so that a plane formed by the incident light axis and the emitting light axis has a predetermined angle with respect to the screen, and relations of θ2=90−2θM and θ1=θ2 are satisfied.
Dependencies are inferred from the claim text.