Variable optical attenuator
United States Patent D467537
US Patent References:
Optical loop attenuator simulating an optical system
Vastagh - - 4736100
Optical simulator with loop-back attenuator and optical thin film
Graham et al. - - 4952798
Optical loop attenuator simulating an optical system
Vastagh - - 4736100
Optical simulator with loop-back attenuator and optical thin film
Graham et al. - - 4952798
Inventors:
Wu, Kun-tsan (Tu-Chen, TW)
Chen, Chien Cheng (Tu-Chen, TW)
Chen, Chien Cheng (Tu-Chen, TW)
Application Number:
D/150645
Publication Date:
12/24/2002
Filing Date:
11/13/2001
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Export Citation:
Assignee:
Hon Hai Precision Ind. Co., Ltd. (Taipei Hsien, TW)
Primary Class:
Field of Search:
356/73.1, D13/101, 250/227.11, 250/239
Primary Examiner:
Lichtenstein, Lisa
Attorney, Agent or Firm:
Chung, Wei Te
Claims:
1. The ornamental design for a variable optical attenuator, as shown.
Description:
FIG. 1 is a perspective view of a variable optical attenuator showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.