发明授权
US07576311B2 Optical detector having a sensing element, a lens and a frustum coupled to the lens 有权
具有耦合到透镜的感测元件,透镜和平截头体的光学检测器

Optical detector having a sensing element, a lens and a frustum coupled to the lens
摘要:
A detector having a field of view in elevation on the order of one hundred eighty degrees in one plane and three hundred sixty degrees in a perpendicular plane includes a generally hemispherical lens in combination with an optical frustum. The combination directs incident radiant energy within the field of view onto a centrally located sensor.
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