Lens-testing apparatus and lens-testing method having a plurality of combinations of object distances

Abstract

One embodiment of the invention provides a lens-testing apparatus being used for testing a lens device. The lens-testing apparatus comprises a light module, at least one first and second image sensors, and at least one image sensor module. The light module generates a patterned light beam passing the lens device. The first and second image sensors receive first and second portions of the patterned light beam; the first image sensor is disposed between the second image sensor and the lens device. The image sensor module receives a substantially parallel third portion of the patterned light beam, and comprises a third image sensor and a collimator. The third portion of the patterned light beam is focused onto the third image sensor by the collimator; the distance between the first image sensor and the lens device is smaller than the distance between the second image sensor and the lens device.

Dependencies are inferred from the claim text.