Objective lens system for microscopes

Details Objective lens system for microscopes Objective lens system for microscopes

1996-06-12

1998-03-17

Nelms, David C.

Optical: systems and elements

Lens

With graded refractive index

359661, G02B 300, G02B 2102

Patent

active

057293899

ABSTRACT:
An objective lens system for microscopes composed of only two lens components each of which is a radial type graded refractive index lens component, and having a numerical aperture of at least 0.2 and favorably corrected aberrations.

REFERENCES:
patent: 4762403 (1988-08-01), Hattori
patent: 4880298 (1989-11-01), Takada
patent: 4998807 (1991-03-01), Uzawa et al.
patent: 5059005 (1991-10-01), Kawano
patent: 5184251 (1993-02-01), Tsuchida et al.
patent: 5235464 (1993-08-01), Tsuchida
patent: 5359456 (1994-10-01), Kikuchi
patent: 5623370 (1997-04-01), Ueda et al.

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