Automatic inspection system for camera lenses and method thereof

Details Automatic inspection system for camera lenses and method thereof Automatic inspection system for camera lenses and method thereof

1996-11-15

1998-03-10

Pham, Hoa Q.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

G01M 1100

Patent

active

057267464

ABSTRACT:
An automatic inspection system for camera lenses and method thereof using a line charge coupled device (CCD) which can process a signal easily and perceive a focal distance of lenses exactly by focusing automatically using a modulation transfer function (MTF) method when designing lenses. The automatic inspection system for camera lenses using a line CCD comprises a light source, a chart, a collimator, camera lenses, a mirror, an image pickup part, a signal converter, and a control part.

REFERENCES:
patent: 3447874 (1969-06-01), Baek
patent: 3938892 (1976-02-01), Klingman, III
patent: 4653909 (1987-03-01), Kuperman
patent: 5303023 (1994-04-01), Portney et al.

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