Slit exposure type illumination apparatus
AssigneeRicoh Company, Ltd.
InventorKouki Isago
Life of this patent
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Abstract
A slit exposure type illumination apparatus for use in copying machines comprising a reflector having a quadratic reflecting surface, a hollow cylindrical member, at least part of which has the property of reflecting infrared light and allowing visible light to pass through and which is disposed near the focal line of the reflector, and a linear light source which is disposed near or in conformity with the focal line of the reflector, within the hollow member, so as to cause infrared light emitted from the linear light source to return to the linear light source by the hollow member to save electric energy required for the linear light source.
Claims10
A slit exposure type illumination apparatus for use in copying machines comprising:
- a reflector having a quadratic reflecting surface,
- a hollow member made of a material which allows visible light to pass through and reflects infrared light and which is disposed near the focal line of said reflector, and
- a linear light source which is disposed inside said hollow member.
Dependencies are inferred from the claim text.