Portable viewer for photographic slides

Card – picture – or sign exhibiting – Photographic transparency viewer – e.g. – x-ray viewer – Portable slide viewer

Patent

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Details

40366, 40363, G02B 2702

Patent

active

045327289

ABSTRACT:
The viewer is constituted by a monolithic housing in plastic material, presenting a window with side guides and an external slot for inserting the slides, said window separating a chamber closed by a lens, from a receptacle containing a source of light and its supply means.
According to the invention, the supply and lighting means are re-grouped inside a removable unit, which can be extracted from the receptacle housing it and in which it is connected; said receptacle comprising opposite the lens, a reflecting surface inclined to form an angle of about 45.degree. with the optical axis.

REFERENCES:
patent: 1463624 (1923-07-01), Mabee
patent: 2345416 (1944-03-01), Naramore
patent: 2602366 (1952-07-01), De Liso
patent: 2621993 (1952-12-01), Miles
patent: 2892274 (1959-06-01), Afton
patent: 2943409 (1960-07-01), Maiershofer
patent: 2954623 (1960-10-01), Giwosky
patent: 3018575 (1962-01-01), Barre et al.
patent: 3675354 (1972-07-01), Webb
patent: 3748765 (1973-07-01), Bass et al.
patent: 4372068 (1983-02-01), Knapp et al.

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