Optical: systems and elements – Having significant infrared or ultraviolet property – Lens – lens system or component
Patent
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
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patent: 4770477 (1988-09-01), Shafer
patent: 4891663 (1990-01-01), Hirose
patent: 4934801 (1990-06-01), Mercado
patent: 5031977 (1991-07-01), Gibson
Hanzawa Toyoharu
Saito Yoshiharu
Arnold Bruce Y.
Lerner Martin
Olympus Optical Co,. Ltd.
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