Lens cell

Details Lens cell Lens cell

1979-05-24

1981-03-31

Evans, F. L.

350438, G02B 702

Patent

active

042589827

ABSTRACT:
Lens cell for carrying a lens element of the type having spaced apart parallel planar registration faces on opposite ends thereof and at least one sidewardly extending tab, and comprising a cell body having a cylindrical wall defining an optical axis for the lens element. The cylindrical wall is formed with an annular inwardly extending protrusion providing an annular planar lens element seating surface facing one end of the cell body, the cylindrical wall has at least one slot formed therein and opening through said one end thereof whereby the lens element can be inserted into the cell body with one registration face in engagement with the annular seating surface and with its tab registered in said slot. A retainer is secured to said cell body and has an annular seating surface forming a registration surface for the other registration face of the lens element.

REFERENCES:
patent: 3508807 (1970-04-01), Mayer
patent: 3784287 (1974-01-01), Grey
patent: 3877792 (1975-04-01), Cox et al.

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