Microfilm reading device

Details Microfilm reading device Microfilm reading device

1980-03-18

1982-02-09

Haroian, Harry N.

Optics: image projectors

Lens support

Lens position adjustable

G03B 2111

Patent

active

043147453

ABSTRACT:
A microfilm reading device in which a lens carrier is provided with two projecting lenses which are in axial parallel alignment with each other. Through actuating a handle which is disposed between the projecting lenses, the projecting lenses can be moved from a first position in which the lens is brought in alignment with a micrograph to be projected into a second position in which the lens is lifted while the other lens is brought in alignment with the micrograph.

REFERENCES:
patent: 3064529 (1962-11-01), Straat
patent: 3792923 (1974-02-01), Pfefer et al.
patent: 3809460 (1974-05-01), Lettan et al.

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