Objective lens system

Details Objective lens system Objective lens system

1991-05-13

1992-08-25

Arnold, Bruce Y.

Optical: systems and elements

Having significant infrared or ultraviolet property

Lens, lens system or component

359656, G02B 1314, G02B 100

Patent

active

051424096

ABSTRACT:
An objective lens system for the rays within the ultraviolet region comprising, in the order from the object side, a first lens unit which has a positive refractive power, and comprises a meniscus lens component having a strongly concave surface on the object side and at least two cemented lens components, and a second lens unit which has a positive refractive power and comprises at least two cemented lens components, all the lens elements composing said objective lens system being made of optical materials having, when they are 5 mm thick, internal transmittance of at least 50% for a ray having a wavelength of 300 nm.

REFERENCES:
patent: 4200352 (1980-04-01), Yuta
patent: 4201440 (1980-05-01), Yuta
patent: 4770477 (1988-09-01), Shafer
patent: 4891663 (1990-01-01), Hirose
patent: 4934801 (1990-06-01), Mercado
patent: 5031977 (1991-07-01), Gibson

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