Reflecting objective system including a negative optical power s

Details Reflecting objective system including a negative optical power s Reflecting objective system including a negative optical power s

1990-07-18

1992-09-01

Henry, Jon W.

Optical: systems and elements

Mirror

Plural mirrors or reflecting surfaces

359861, G02B 1706, G02B 510

Patent

active

051444968

ABSTRACT:
A reflecting objective system comprising three or more spherical reflecting mirrors arranged symmetrically with regard to an optical axis common thereto and has spherical aberration corrected very favorably. By using a single or plural aspherical surfaces, this reflecting objective system can be modified so as to comprise two or more reflecting mirrors and correct not only the spherical aberration but also the offaxial aberrations.

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V. A. Panov et al, "Microobjectives . . . ", Sov. Jour. of Opt. Tech., vol. 37, No. 11, Nov. 1970, pp. 721-725.
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Joseph A. Oberheuser, "Optical System . . . ", SPIE Proc. Soc. Photo-Opt. Instrum. Eng. (USA) vol. 193 (1979) pp. 27-33.
A. K. Head, "The Two-Mirror Aplanat", Proc. of the Physical Soc. (London), vol. 70, No. 454B (Oct. 1957), pp. 945-949.

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