Optical: systems and elements – Lens – Including a nonspherical surface
Patent
1998-11-09
2000-06-13
Epps, Georgia
Optical: systems and elements
Lens
Including a nonspherical surface
359708, 359719, 359754, 359794, G02B 302, G02B 900, G02B 906
Patent
active
06075656&
ABSTRACT:
A high numerical aperture objective lens for focusing a laser beam consists of a first lens element of positive optical power intercepting the laser beam and a second lens element of positive optical power located adjacent to the first lens element. The first lens element and the second lens element have identical surface profiles.
REFERENCES:
patent: 4525040 (1985-06-01), Nakamura
patent: 4645311 (1987-02-01), Rothe
patent: 4953959 (1990-09-01), Ishiwata et al.
patent: 5166830 (1992-11-01), Ishibai et al.
patent: 5880893 (1999-03-01), Suganuma
Bietry Joseph R.
Bourdage Phillip D.
McLaughlin Paul O.
Richards David A.
Eastman Kodak Company
Epps Georgia
Short Svetlana Z.
Spector David N.
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