Illuminating apparatus
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United States of America Patent
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Dec 13, 2005
Grant Date -
Aug 7, 2003
app pub date -
Jan 30, 2003
filing date -
Feb 5, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This specification discloses an illuminating apparatus having a light source and an optical unit disposed forwardly on the object side of the light source, the optical unit being provided with an incidence surface on which light from the light source is incident, a light emergence surface provided with a Fresnel lens, and a side reflecting surface for totally reflecting the light incident on the incidence surface toward the Fresnel lens, wherein the light totally reflected by the side reflecting surface is refracted by the Fresnel lens and efficiently irradiates the object.
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