Lens module testing apparatus

Details Lens module testing apparatus Lens module testing apparatus

1998-06-08

1999-10-12

Pham, Hoa Q.

Optics: measuring and testing

Lens or reflective image former testing

For optical transfer function

G01M 1100

Patent

active

059662093

ABSTRACT:
A lens module testing apparatus includes a light source, a grating reflects the light emitting from the light source to form a object light locating at a object location, an adjustable holding device holds a lens module between the object location and a image location, adjusting the holding device to position the lens module to form a testing image of the object light at the image location. A CCD is located at the image location to receive the intensity of the testing image and then generate an electrical signal. A PC analyzes the electrical signal.

REFERENCES:
patent: 3733135 (1973-05-01), Diakides et al.
patent: 3912396 (1975-10-01), Hartmann
patent: 5303023 (1994-04-01), Portney et al.

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