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US 5,966,209 AGranted
Lens module testing apparatus
AssigneeAcer Pheripherals, Inc.
InventorsMing Tsung Cheng, Jih-Yung Lu
Life of this patent
Estimating the term…
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.
Claims5
A system for testing a lens module comprising:
- means for forming a reflective light pattern;
- means for holding the lens module, which can make the lens module move along and rotate around the optical path of said lens module, to make a testing image substantially formed at the image location of said lens module by passing said reflective light pattern through said lens module;
- means for converting said testing image formed at said image location of said lens module to an electrical signal;
- means for analyzing said electrical signal to determine the quality parameters of said lens module.
1 more element
Dependencies are inferred from the claim text.