Optics: measuring and testing – Angle measuring or angular axial alignment
Reexamination Certificate
2011-07-12
2011-07-12
Pham, Hoa (Department: 2886)
Optics: measuring and testing
Angle measuring or angular axial alignment
C356S370000, C356S028500, C250S23700G
Reexamination Certificate
active
07978320
ABSTRACT:
A light angle detection device according to an embodiment of the present invention includes a first light receiving lens, a first light sensing element, a second light receiving lens, and a second light sensing element. The first and second light receiving lenses and the first and second light sensing elements are disposed such that a first straight line passing through the center of the light receiving surface of the first light sensing element and the vertex of the first light receiving lens, a second straight line passing through the center of the light receiving surface of the second light sensing element and the vertex of the second light receiving lens, and a third straight line passing through the center of the light receiving surface of the first light sensing element and the center of the light receiving surface of the second light sensing element form an isosceles triangle.
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Akanbi Isiaka O
Birch & Stewart Kolasch & Birch, LLP
Pham Hoa
Sharp Kabushiki Kaisha
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