Light source apparatus including splitter and image display apparatus including the same
AssigneeCanon Kabushiki Kaisha
InventorYuuki Maeda
Life of this patent
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Abstract
The light source apparatus includes a light source, and a light guide plate configured to propagate a light beam from the light source in a specific direction. The light guide plate includes a splitter configured to split the light beam from the light source into a plurality of light beams, and to emit the plurality of light beams from the light guide plate. The splitter is configured such that a transmittance for a predetermined wavelength included in the light beam from the light source increases along the specific direction. A predetermined inequality is satisfied.
Claims13
A light source apparatus comprising:
- a light source;
- and
- a light guide plate configured to propagate a light beam from the light source in a specific direction,
- wherein the light guide plate includes a splitter configured to split the light beam from the light source into a plurality of light beams, and to emit the plurality of light beams from the light guide plate,
- wherein the splitter is configured such that a transmittance for a predetermined wavelength included in the light beam from the light source increases along the specific direction,
- wherein the light guide plate is provided to face the splitter and includes a reflector configured to reflect the light beam from the light source, and
- wherein the following inequality is satisfied:
- 2.
- ≤
- n
- /
- m
- 0
- ≤
- T
-
- (
- θ
- )
- ≤
- 2
-
- 0
- where n is the number of areas of the splitter with different transmittances, m is the number of light beams, and T(θ) is a transmittance of the reflector for the light beam from the light source that enters the reflector at an incident angle θ (°).
A light source apparatus comprising:
- a light source;
- and
- a light guide plate configured to propagate a light beam from the light source in a specific direction,
- wherein the light guide plate includes a splitter configured to split the light beam from the light source into a plurality of light beams, and to emit the plurality of light beams from the light guide plate,
- wherein the splitter is configured such that a transmittance for a predetermined wavelength included in the light beam from the light source increases along the specific direction,
- wherein the light guide plate is provided to face the splitter and includes a reflector configured to reflect the light beam from the light source,
- wherein the splitter reflects a part of the light beam from the light source and transmits another part of the light beam, and
- wherein the following inequality is satisfied:
- 2.
- ≤
- n
- /
- m
- where n is the number of areas of the splitter with different transmittances, and m is the number of light beams.
Dependencies are inferred from the claim text.