Claims
- 1. An afocal lens system having substantially diffraction-limited performance in the visible and near infrared regions of the electromagnetic spectrum, said lens system comprising a plurality of lens elements made of optical glass, and a lens element made of a liquid optical material: said glass lens elements and said liquid lens element being positioned with respect to each other alone an optic axis so that said liquid lens element is disposed between two glass lens elements, said liquid optical material further defined as Cargille 4793790 liquid, said plurality of lens elements further defined as comprising four lens elements, said lens elements being configured and positioned with respect to each other along said optic axis according to a design form specified as follows:
- ______________________________________Surface Radius ThicknessNo. (mm) (mm) N.sub.d V.sub.d Material______________________________________1 -8.9456 3.0000 1.805182 25.432 SF62 -14.4450 140.9780 Air3 -182.8981 3.0000 1.620901 60.308 SK514 -50.0658 0.5000 1.640346 13.534 6421345 -47.5086 3.0000 1.805182 25.432 SF66 -65.8340 10.0000 Air______________________________________
- where the surfaces of the lens elements are numbered consecutively from left to right along the optic axis, and where N.sub.d is the index of refraction at the wavelength of the sodium d spectral line and V.sub.d is the Abbe number at the same wavelength.
- 2. An afocal lens system having substantially diffraction-limited performance in the visible and near infrared regions of the electromagnetic spectrum, said lens system comprising a plurality of lens elements made of optical glass and a lens element made of a liquid optical material: said glass lens elements and said liquid lens element being positioned with respect to each other along an optic axis so that said liquid lens element is disposed between two glass lens elements, said liquid optical material further defined as Cargille 4793790 liquid, said plurality of lens elements further defined as comprising four lens elements, said lens elements being configured and positioned with respect to each other along said optic axis according to a design form specified as follows:
- ______________________________________Surface Radius ThicknessNo. (mm) (mm) N.sub.d V.sub.d Material______________________________________1 -9.6802 3.0000 1.805182 25.432 SF62 -15.6140 150.0000 Air3 -246.9917 3.0000 1.526421 60.019 BALK14 -48.9722 0.5000 1.640346 13.534 6421345 -46.5682 3.0000 1.805182 25.432 SF66 -63.4703 10.0000 Air______________________________________
- where the surfaces of the lens elements are numbered consecutively from left to right along the optic axis, and where N.sub.d is the index of refraction at the wavelength of the sodium d spectral line and V.sub.d is the Abbe number at the same wavelength.
- 3. An afocal lens system having substantially diffraction-limited performance in the visible and near infrared regions of the electromagnetic spectrum, said lens system comprising a plurality of lens elements made of optical glass, and a lens element made of a liquid optical material: said glass lens elements and said liquid lens element being positioned with respect to each other along an optic axis so that said liquid lens element is disposed between two glass lens elements, said liquid optical material further defined as Cargille 4793790 liquid, said plurality of lens elements further defined as comprising four lens elements, said lens elements being configured and positioned with respect to each other along said optic axis according to a design form specified as follows:
- ______________________________________Surface Radius ThicknessNo. (mm) (mm) N.sub.d V.sub.d Material______________________________________1 -6.8902 3.0000 1.805182 25.432 SF62 -13.3843 189.8179 Air3 -855.2442 3.0000 1.620901 60.308 SK514 -67.5300 0.5000 1.640346 13.534 6421345 -62.8071 3.0000 1.805182 25.432 SF66 -99.5378 10.0000 Air______________________________________
- where the surfaces of the lens elements are numbered consecutively from left to right along the optic axis, and where N.sub.d is the index of refraction at the wavelength of the sodium d spectral line and V.sub.d is the Abbe number at the same wavelength.
- 4. An afocal lens system having substantially diffraction-limited performance in the visible and near infrared regions of the electromagnetic spectrum, said lens system comprising a plurality of lens elements made of optical glass, and a lens element made of a liquid optical material: said glass lens elements and said liquid lens element being positioned with respect to each other along an optic axis so that said liquid lens element is disposed between two glass lens elements, said liquid optical material further defined as Camille 4793790 liquid, said plurality of lens elements further defined as comprising four lens elements, said lens elements being configured and positioned with respect to each other along said optic axis according to a design form specified as follows:
- ______________________________________Surface Radius ThicknessNo. (mm) (mm) N.sub.d V.sub.d Material______________________________________1 -8.8586 3.0000 1.805182 25.432 SF62 -19.3052 201.4327 Air3 -520.5568 3.0000 1.526421 60.019 BALK14 -74.6112 0.5000 1.640346 13.534 6421345 -68.9276 3.0000 1.805182 25.432 SF66 -112.2566 10.0000 Air______________________________________
- where the surfaces of the lens elements are numbered consecutively from left to right along the optic axis, and where N.sub.d is the index of refraction at the wavelength of the sodium d spectral line and V.sub.d is the Abbe number at the same wavelength.
Parent Case Info
This application is a continuation-in-part of U.S. patent application Ser. No. 08/011,551 filed on Feb. 1, 1993.
US Referenced Citations (11)
Continuation in Parts (1)
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Number |
Date |
Country |
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11511 |
Feb 1993 |
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