Adjustable objective holder

Details Adjustable objective holder Adjustable objective holder

1980-03-13

1981-12-29

Punter, William H.

Supports

Pipe or cable

Extending through plate

74 99R, 248178, G02B 702

Patent

active

043079415

ABSTRACT:
The adjustable objective holder for optical projectors has a focussing support formed as a single piece defining two pairs of juxtaposed walls forming a parallelogram. The walls of one pair are rigid whereas the walls in the other pair are flexible. One rigid wall is fixedly mounted to the apparatus and supports for rotation a control shaft. The opposite rigid wall has on its inner surface a control groove which engages an eccentric formed on the end of the control shaft so that during the rotation of the eccentric the flexible walls are uniformly swung and due to the parallel linkage the movable rigid wall together with the objective performs a linear movement at right angles to the transparency.

REFERENCES:
patent: 3486388 (1969-12-01), Saylor
patent: 3596863 (1971-08-01), Kaspareck
Kranick et al., "X-Y Stage Drive", IBM Tech. Disc. Bulltetin, Sep. 14 1972, pp. 1107-1108.

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