Title:
望遠鏡および冷却されないウォームストップ構造を含む画像光学システム
Document Type and Number:
Japanese Patent JP4991539
Kind Code:
B2
Abstract:
An all-reflective telescope has, in order, a positive-optical-power primary mirror, a negative-optical-power secondary mirror, a positive-optical-power tertiary mirror, a negative-optical-power quaternary mirror, and a positive-optical-power field lens. The mirrors and lens are axisymmetric about a beam axis. The light beam is incident upon an infrared detector after reflecting from the quaternary mirror. A cooling housing encloses the detector and the field lens, but does not enclose any of the mirrors. An uncooled warm-stop structure outside of the cooling housing but in a field of view of the detector is formed as a plurality of facets with reflective surfaces oriented to reflect a view of an interior of the cooling housing back to the interior of the cooling housing.
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Inventors:
Seriolt, Philip Sea.
Radau, Junior Rudolph E.
Radau, Junior Rudolph E.
Application Number:
JP2007524876A
Publication Date:
August 01, 2012
Filing Date:
July 29, 2005
Export Citation:
Assignee:
RAYTHEON COMPANY
International Classes:
G02B17/08; G01J5/06; G02B5/10; G02B17/00; G02B27/00; H01J3/14
Attorney, Agent or Firm:
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Katsu Sunagawa
Ryo Hashimoto
Tetsuya Kazama
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Katsu Sunagawa
Ryo Hashimoto
Tetsuya Kazama