Title:
OPTICAL SYSTEM FOR LASER SCANNING
Document Type and Number:
Japanese Patent JP2601224
Kind Code:
B2
Abstract:
PURPOSE: To provide an optical system for laser scanning constituted so that an assembling process is simplified and the cost of the whole system is reduced by saving a labor at the time of an aperture is assembled.
CONSTITUTION: This optical system is provided with the aperture 1 for adjusting the beam diameter of a laser beam R emitted from a laser beam emission part, a toroidal lens 2 converging the laser beam R passed through the aperture 1 in upper and lower directions, a polygon mirror reflecting the laser beam R from the lens 2 and making it scan and an fθ lens focusing the laser beam R reflected on the polygon mirror on an image surface. Then, the laser beam incident surface of the lens 2 is integrally equipped with the aperture 1.
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Inventors:
Katsura Katsura
Application Number:
JP26685094A
Publication Date:
April 16, 1997
Filing Date:
October 31, 1994
Export Citation:
Assignee:
NEC
International Classes:
G02B26/10; (IPC1-7): G02B26/10
Attorney, Agent or Firm:
Takahashi Isamu