Albada type inverted Galileo finder

Details Albada type inverted Galileo finder Albada type inverted Galileo finder

1988-02-18

1989-05-09

Corbin, John K.

350443, G02B 912, G02B 934, G02B 1900

Patent

active

048283746

ABSTRACT:
An Albada type inverted Galileo finder which is suitable foruse with a compace lens shutter camera, which is small in size, and which is visible without occurrence of any ghost not only in an object but a finder frame.
If lenses are disposed in order of negative, positive and positive from the side of an object and a reflecting surface of an Albada system is a surface on the side of the object of a positive lens, a finder which involves no ghost and is advantageous for correction of aberrations can be obtained. Furthermore, if the on-the-axis thickness of each lens is restricted to thereby provide a plastic lens, precision of molding can be improved.

REFERENCES:
patent: 4441802 (1984-04-01), Iizuka

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