Browse Prior Art Database

Lens Squaring Adjustment

IP.com Disclosure Number: IPCOM000088780D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Buddington, DL: AUTHOR [+2]

Abstract

A lens' optical axis is squared in its lens carrier by a mechanism which eliminates gradual misalignment which may be caused by subsequent creep of the carrier's rubber pad.

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Lens Squaring Adjustment

A lens' optical axis is squared in its lens carrier by a mechanism which eliminates gradual misalignment which may be caused by subsequent creep of the carrier's rubber pad.

Lens 10 is held in a sleeve which includes an annular shoulder 11 which mates with an annular rubber pad 12. This pad provides a deformable member whereby the lens' optical axis 13 may be squared with lens carrier 14.

Three 120 Degrees-spaced bolts 15 freely pass through holes in shoulder 11 and pad 12, and are threaded into the lens carrier. Tightening of the bolts tilts the lens' optical axis 13 as pad 12 is deformed.

Once the lens' axis is square to the lens carrier, three 120 Degrees-spaced bolts 16 are tightened. These bolts are threaded into shoulder 11, and freely pass through holes in pad 12 and against the top surface of the mating portion of carrier 14.

Thus, bolts 16, in cooperation with bolts 15, lock lens 10 in its squared position. Inertia forces, due to lena movement, or subsequent creep of the rubber pad, do not thereafter disturb this adjustment.

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