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US 6,807,369 B1Granted
Illumination device and photographing apparatus having the same
AssigneeCanon Kabushiki Kaisha
InventorYoshiharu Tenmyo
Life of this patent
Estimating the term…
Abstract
An illumination device includes a flash discharge tube, an optical prism having a total-reflection surface for totally reflecting at least a part of incident light, light emitted from the flash discharge tube being made incident on the optical prism, and an optical panel, light having exited from the optical prism being made incident on the optical panel, wherein the illumination device varies a state of illumination light by varying a positional relationship between the optical prism and the optical panel.
Claims19
An illumination device comprising:
- a light source;
- a first optical member having a total-reflection surface for totally reflecting at least a part of incident light, light emitted from said light source being made incident on said first optical member;
- and
- a second optical member, light having exited from said first optical member being made incident on said second optical member,
- wherein said illumination device varies a state of illumination light by varying a positional relationship between said first optical member and said second optical member.
2 more elements
Dependencies are inferred from the claim text.