Integrated optical module for reflectance sensing

Details Integrated optical module for reflectance sensing Integrated optical module for reflectance sensing

2005-04-25

2009-11-17

Lee, Seung H (Department: 2887)

Registers

Coded record sensors

Particular sensor structure

C235S439000

Reexamination Certificate

active

07617980

ABSTRACT:
Reflection of light from a surface is sensed by emitting light from a light emitting diode and focusing the light using an aspherical emitter lens to illuminate a reflecting surface. Light reflected by the reflecting surface is focused onto a photodetector using an aspherical collector lens. The light emitting diode is displaced from the optical axis of the aspherical emitter lens and the photodetector is displaced from the optical axis of the aspherical collector lens.

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