Optical magnifying system: 4.times. loupe

Details Optical magnifying system: 4.times. loupe Optical magnifying system: 4.times. loupe

1986-11-28

1988-09-06

Corbin, John K.

350479, G02B 2500, G02B 1104

Patent

active

047688661

ABSTRACT:
A four element optical magnifying system (10) is disclosed. The primary lens (12), secondary lens (14), tertiary lens (16), and quaternary lens (18) form an optical system (10) have surfaces shaped to focus upon an object such that a high resolution image is formed at infinity at 4.times. magnification substantially over the entire field of view.

REFERENCES:
patent: 4482217 (1984-11-01), Nagler

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