Apparatus and method for orienting monocrystalline material for

Details Apparatus and method for orienting monocrystalline material for Apparatus and method for orienting monocrystalline material for

1975-03-17

1977-01-11

Corbin, John K.

Optics: measuring and testing

Crystal or gem examination

Axes determination

356138, G01N 2104

Patent

active

040024105

ABSTRACT:
A small portable device quickly secured to and removed from a body of monocrystalline material to be sawed and useful for aligning the body with respect to a saw blade, permitting sawing with precisely predetermined crystallographic orientation. The device has a viewing screen, a light source, and first and second autocollimators. The first autocollimator directs a first collimated light beam toward a surface of the material. The resultant reverse reflection is directed back through the collimating lens and a beam splitter images the reflection on the screen, providing a pattern on the screen characteristic of a crystallographic plane of the material, the pattern position corresponding to the orientation of the device with respect to the crystallographic plane. The second autocollimator directs a second collimated light beam toward the saw blade surface, the resultant reflection being directed back through its collimating lens and imaged on the screen as a second pattern having a position corresponding to the orientation of the blade with respect to the device. A small enclosure contains the screen, light source, both autocollimators, and imaging optics. A clamp arrangement secures the enclosure to the monocrystalline body and permits selective orientation of said device with respect to the body.

REFERENCES:
patent: 2973687 (1961-03-01), Pennington et al.
patent: 3124638 (1964-03-01), Loro
patent: 3518005 (1970-06-01), Weber
Carl Zeiss, Crystal Orientation Device, Descriptive Brochure.

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