Imaging optical system

Details Imaging optical system Imaging optical system

1994-05-10

1998-08-04

Epps, Georgia Y.

Optical: systems and elements

Lens

With multipart element

359571, G02B 308

Patent

active

057903212

ABSTRACT:
An imaging optical system comprising at least one diffractive optical element having a positive refractive power, at least one refractive optical element having a positive refractive power and at least one refractive optical element having a negative refractive power; and characterized in that it favorably corrects aberrations, in particular, chromatic aberration.

REFERENCES:
patent: 5044706 (1991-09-01), Chen
patent: 5151823 (1992-09-01), Chen
patent: 5268790 (1993-12-01), Chen
patent: 5493441 (1996-02-01), Chipper
Farn et al: "Diffractive doublet corrected on-axis at two wavelenghts", SPIE -vol. 1354, International Lens Design Conference (1990) pp. 24-37.

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