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Dual Function Microscope Eyepiece

IP.com Disclosure Number: IPCOM000049760D
Original Publication Date: 1982-Jul-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Levine, JE: AUTHOR [+3]

Abstract

This multifunction eyepiece allows masks to be visually inspected and also allows discrete measurements to be made without interchanging or replacing eyepieces.

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Dual Function Microscope Eyepiece

This multifunction eyepiece allows masks to be visually inspected and also allows discrete measurements to be made without interchanging or replacing eyepieces.

Referring now to the illustrations, Fig. 1 represents a typical "In Process Inspection" station. The modified eyepiece 1 is shown with the stereomicroscope 2 in position over a mask pattern 3. View "A" illustrates the "binocular" field of view while scanning the mask for visual defects, whereas view "B" shows a binocular field used for measuring. The operation of the eyepiece is shown in Fig. 2. Within the fragmented view, the ruled grating 12 is mounted at the top of a hollow cylindrical guide 4 such that the reduced cylindrical portion of guide 4 is able to fit within the eyepiece 7 end is made visible and in focus at the exit pupil when the grating 12 is in the focal place of the eyepiece 7, as also shown in view
B. Rotating the outer cover 9 counter clockwise approximately 30 degrees lowers the ruled grating 12 from the "in focus" to an "out of focus" position through a vertical displacement "D", as shown in phantom outline. This movement results from three high helix angle grooves 5 radially spaced at 120 degrees in tube 13 horizontally support guide 4 through corresponding follower pins 10 which also communicate through three vertical slots, permitting guide 4 only one degree of freedom. Tube 13 and cover 9 are restrained vertically by bearing rings 7, 8 and are all...