Optical pickup apparatus and laser diode chip

Details Optical pickup apparatus and laser diode chip Optical pickup apparatus and laser diode chip

2005-06-28

2005-06-28

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular beam control device

Producing plural wavelength output

C372S050121, C369S044370

Reexamination Certificate

active

06912234

ABSTRACT:
An optical pickup apparatus and a laser diode chip which can simplify and miniaturize a construction of the apparatus is provided for using a plurality of laser beams of different wavelengths. The laser diode chip is a chip for the optical pickup apparatus in which a plurality of light emitting portions for emitting the laser beams of the different wavelengths in the same emitting direction are formed on a substrate. Light emitting points of the plurality of light emitting portions are located at positions which are different in the emitting direction.

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