Polarization-direction-controlling element and exposure device

Details Polarization-direction-controlling element and exposure device Polarization-direction-controlling element and exposure device

2007-10-23

2007-10-23

Pham, Hai (Department: 2861)

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C347S256000

Reexamination Certificate

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11202245

ABSTRACT:
A polarization-direction-controlling element comprising a ½ wavelength plate disposed with a crystal optical axis tilted at substantially 45 degrees with respect to a polarization direction of a beam of light separated by a polarization-separating element with a part of a laser beam transmitted, is provided on the optical path of the laser beam, outputted from a plurality of semiconductor lasers, between an outlet for the laser beams at a fiber array and a polarization-separating element for separating the laser beam into two beams of light having mutually orthogonal polarization directions. A polarization-direction-controlling element capable of improving the quality of recorded images in an exposing-recording device using an element with polarization dependency and an exposure device capable of improving the quality of recorded images can also be obtained.

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