Focus detecting apparatus for a telescope system

Details Focus detecting apparatus for a telescope system Focus detecting apparatus for a telescope system

1997-04-01

1999-03-02

Henry, Jon

Optical: systems and elements

Compound lens system

Telescope

359429, 356375, G02B 2300, G01B 1100

Patent

active

058778926

ABSTRACT:
An automatic focus detecting telescope which offers easy maintenance and which, when applied to a surveying instrument such as an auto-level, provides easy detachment and attachment of an optical horizontal compensation system. Even if the optical horizontal compensation system is detached, no readjustments are required for the automatic focusing apparatus and the eyepiece optical system.

REFERENCES:
patent: 4394569 (1983-07-01), Nakamura
patent: 4485303 (1984-11-01), Suzuki
patent: 4491402 (1985-01-01), Suzuki
patent: 4620774 (1986-11-01), Moskovich
patent: 5087125 (1992-02-01), Narutaki
patent: 5099131 (1992-03-01), Brownrigg et al.
patent: 5266982 (1993-11-01), Soshi

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