Angle measuring device and method

Details Angle measuring device and method Angle measuring device and method

2006-09-20

2010-10-26

Alsomiri, Isam (Department: 3662)

Optics: measuring and testing

Angle measuring or angular axial alignment

Apex of angle at observing or detecting station

C356S139100

Reexamination Certificate

active

07821626

ABSTRACT:
By diffracting light emitted from a collimator lens into lights of different orders by a transmission diffraction grating, applying the diffracted lights to a flat surface of an object, forming the light that has been reflected on the flat surface of the object and thereafter retransmitted through the transmission diffraction grating into an image in a position located apart from the optical axis of the outgoing light and measuring the angle of the object with respect to the optical axis of the collimator lens using the image location and the order of the light formed as the image, the angle in a wide range can be measured with a high resolving power.

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Patent Cooperation Treaty (PCT) International Preliminary Report on Patentability, Mar. 26, 2008.
International Search Report issued Nov. 21, 2006 in the International (PCT) Application of which the present application is the U.S. National Stage.

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