Radiant energy – Photocells; circuits and apparatus – Solid state light source
Reexamination Certificate
2007-09-18
2007-09-18
Lee, John R. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Solid state light source
C250S208100, C347S130000, C347S138000, C347S238000, C347S242000, C358S472000
Reexamination Certificate
active
11728561
ABSTRACT:
An optical alignment method is for an optical module including a housing unit, a light-sensing unit, and a lens unit. The method includes: (a) through image-capturing techniques, finding a light-sensing component of the light-sensing unit and a predetermined reference point, and determining an actual total optical path length between the light-sensing component and an object position; (b) subtracting a correction distance from the actual total optical path length to obtain a corrected total optical path length; (c) finding a first center line that divides the corrected total optical path length in half; (d) through image-capturing techniques, finding opposite first and second edges of the lens unit, and determining a lens length between the first and second edges; (e) finding a second center line that divides the lens length in half; and (f) assembling the lens unit to the housing unit such that the first and second center lines overlap.
REFERENCES:
patent: 6169564 (2001-01-01), Tsukagoshi et al.
patent: 6340982 (2002-01-01), Taira et al.
patent: 6952289 (2005-10-01), Fujimoto et al.
Lee John R.
Universal Scientific Industrial Co., Ltd.
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