Anamorphotic attachment for a projection objective

Details Anamorphotic attachment for a projection objective Anamorphotic attachment for a projection objective

1992-08-17

1994-08-16

Ben, Loha

Optical: systems and elements

Lens

With support

359668, G02B 702, G02B 1308

Patent

active

053391934

ABSTRACT:
An anamorphotic attachment for a projection objective has front and rear lens groups which have vertical diameters greater than their horizontal diameters and received respectively in an inner mounting tube and an outer mounting tube, the latter being connectable to the projection objective at its rear end. The inner mounting tube is fully received in the outer mounting tube and has thereon a shifting screw for moving the inner mounting axially within the outer mounting and a clamping screw actuatable to lock the two mounting tubes together, both accessible at the front end of the inner mounting tube within the outer mounting tube.

REFERENCES:
patent: 2940372 (1960-06-01), Ehrenhaft et al.
patent: 3410630 (1968-11-01), Jacobs
patent: 4978212 (1990-12-01), Hazard
patent: 5250968 (1993-10-01), Numata et al.

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