Optical material and optical system using it

Details Optical material and optical system using it Optical material and optical system using it

2007-03-27

2007-03-27

Cain, Edward J. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S442000, C524S492000, C524S493000

Reexamination Certificate

active

10680198

ABSTRACT:
An optical material is a mixture of materials comprising a first material having a refractive index of not more than 1.45 for the d-line and a second material having an Abbe's number, indicating wavelength dispersion in the visible region, of not more than 25. A relation between the refractive index for the d-line (nd) and the Abbe's number (νd) is defined as follows:in-line-formulae description="In-line Formulae" end="lead"?nd≦−6.667×10−3νd+1.70.in-line-formulae description="In-line Formulae" end="tail"?

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