Optical system and optical apparatus including optical system

Details Optical system and optical apparatus including optical system Optical system and optical apparatus including optical system

2007-11-06

2007-11-06

Thompson, Tim (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S766000, C359S771000

Reexamination Certificate

active

11552542

ABSTRACT:
At least one exemplary embodiment is directed to an optical system which includes at least one first refractive optical element, which includes a solid material satisfying the following conditional expression (1), and at least one second refractive optical element, which includes a solid material satisfying the following conditional expression (2):in-line-formulae description="In-line Formulae" end="lead"?−1.33×10−3×υd+6.7×10−1<θgF  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?−1.63×10−3×υd+6.2×10−1>θgF  (2)in-line-formulae description="In-line Formulae" end="tail"?where υd and θgF indicate the Abbe number and the partial dispersion ratio, respectively.

REFERENCES:
patent: 4913535 (1990-04-01), Robb
patent: 6025962 (2000-02-01), Suzuki
patent: 6404561 (2002-06-01), Isono et al.
patent: 6639721 (2003-10-01), Endo
patent: 7164446 (2007-01-01), Konishi
patent: 2002-062478 (2002-02-01), None

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