Title:
DRAW TUBE FOR REFLECTING TELESCOPE
Document Type and Number:
Japanese Patent JP2708704
Kind Code:
B2
Abstract:
PURPOSE: To provide a draw tube for a reflecting telescope by which reflection is not caused on an inside surface and turbulence of an air current is not caused.
CONSTITUTION: In a draw tube 8 to cut off external light L installed in a clearance S between reflected light R1 of a main reflecting mirror 3 and reflected light R2 of a sub-reflecting mirror 4 in a condition of running along the optical axis K, it is formed in such a structure that plural disks 9 having through-holes 11 in the center to pass the reflected light R2 of the sub-reflecting mirror 4 are combined with each other along the optical axis K at prescribed intervals (d).
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Inventors:
Nakamura Katsushige
Katsuhiro Miura
Katsuhiro Miura
Application Number:
JP29318793A
Publication Date:
February 04, 1998
Filing Date:
November 24, 1993
Export Citation:
Assignee:
Mitaka Koki Co., Ltd.
International Classes:
G02B23/02; (IPC1-7): G02B23/02
Domestic Patent References:
| JP1307721A | ||||
| JP519179A | ||||
| JP545625A |
Attorney, Agent or Firm:
Takeshi Takatsuki
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