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Browse Prior Art Database

Two Color Optical Alignment System

IP.com Disclosure Number: IPCOM000083014D
Original Publication Date: 1975-Mar-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Culver, JV: AUTHOR [+3]

Abstract

The apparatus of the drawing is used for viewing the alignment of a part 2 with respect to a second part 3. Part 3 is carried on a base 4 that an operator can adjust along horizontal X-Y coordinates. When alignment is satisfactory, the intervening apparatus is removed and a support 5 for part 2 is moved vertically downward to position part 2 on part 3.

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Two Color Optical Alignment System

The apparatus of the drawing is used for viewing the alignment of a part 2 with respect to a second part 3. Part 3 is carried on a base 4 that an operator can adjust along horizontal X-Y coordinates. When alignment is satisfactory, the intervening apparatus is removed and a support 5 for part 2 is moved vertically downward to position part 2 on part 3.

Parts 2 and 3 are illuminated by a source of white light that is not shown in the drawing. A beam splitting cube 6 includes a partially reflecting surface 7 and a front surface mirror 8. Light is reflected to the right to mirror 8 and again reflected to the left to a viewing apparatus 9. Light from part 3 travels upward to surface 7 where it is reflected to the left to viewing apparatus 9. Thus, an operator sees in superposition the surfaces of parts 2 and 3 that are to be matched and can make adjustments to the position of support 4.

A green filter 10 is located on the upper surface of beam splitter 6 to filter light from part 2, without interfering with light from part 3. A red filter 11 is mounted on the lower surface of the beam splitter to filter light from part 3, without interfering with light from part 2. Thus at the viewing apparatus 9, a green image of part 2 is superimposed on a red image of part 3. The two colors increase the speed and accuracy and lessen the fatigue of personnel operating the alignment apparatus.

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