Illumination apparatus and image projection apparatus using the illumination apparatus
AssigneeOlympus Optical Co., Ltd.
InventorKazunari Hanano
Life of this patent
Estimating the term…
Abstract
An illumination apparatus comprises a small-plane light source having diffusion radiation characteristics, a columnar light leading member, having an incident end surface, an outgoing radiation end surface and a reflection surface, configured to reflect on the reflection surface at least a part of a light ray from the small-plane light source collected from the incident end surface, thereby leading the light to the outgoing radiation end surface, and an angle position converting member configured to convert an outgoing light angle intensity of the outgoing light from the outgoing radiation end surface of the columnar light leading member into a position intensity in a predetermined irradiation area.
Claims50
An illumination apparatus comprising:
- a small-plane light source having diffusion radiation characteristics;
- a columnar light leading member, having an incident end surface, an outgoing radiation end surface and a reflection surface, configured to reflect on the reflection surface at least a part of a light ray from the small-plane light source collected from the incident end surface, thereby leading the light to the outgoing radiation end surface;
- and
- an angle position converting member configured to convert an outgoing light angle intensity of the outgoing light from the outgoing radiation end surface of the columnar light leading member into a position intensity in a predetermined irradiation area.
An image projection apparatus comprising:
- an illumination apparatus comprising:
- a small-plane light source having diffusion radiation characteristics;
- a columnar light leading member, having an incident end surface, an outgoing radiation end surface and a reflection surface, configured to reflect on the reflection surface at least a part of a light ray from the small-plane light source collected from the incident end surface, thereby leading the light to the outgoing radiation end surface;
- and
- an angle position converting member configured to convert an outgoing light angle intensity of the outgoing light from the outgoing radiation end surface of the columnar light leading member into a position intensity in a predetermined irradiation area;
- a light modulation element, having a pixel structure, configured to modulate a light ray for each pixel in accordance with an image signal;
- and
- a projection lens configured to enlarge and project the light modulation element, wherein
- the light modulation element is arranged in the illumination area in the illumination apparatus.
An illumination apparatus comprising:
- a small-plane light source having diffusion radiation characteristics;
- columnar light leading means, having an incident end surface, an outgoing radiation end surface and a reflection surface, for reflecting on the reflection surface at least a part of a light ray from the small-plane light source collected from the incident end surface, thereby leading the light to the outgoing radiation end surface;
- and
- angle position converting means for converting an outgoing light angle intensity of the outgoing light from the outgoing radiation end surface of the columnar light leading means into a position intensity in a predetermined irradiation area.
An image projection apparatus comprising:
- an illumination apparatus comprising:
- a small-plane light source having diffusion radiation characteristics;
- columnar light leading means, having an incident end surface, an outgoing radiation end surface and a reflection surface, for reflecting on the reflection surface at least a part of a light ray from the small-plane light source collected from the incident end surface, thereby leading the light to the outgoing radiation end surface;
- and
- angle position converting means for converting an outgoing light angle intensity of the outgoing light from the outgoing radiation end surface of the columnar light leading means into a position intensity in a predetermined irradiation area;
- a light modulation element, having a pixel structure, for modulating a light ray for each pixel in accordance with an image signal;
- and
- a projection lens for enlarging and projecting the light modulation element, wherein
- the light modulation element is arranged in the illumination area in the illumination apparatus.
Dependencies are inferred from the claim text.