System for detecting the position of an objective lens

Details System for detecting the position of an objective lens System for detecting the position of an objective lens

1988-10-18

1990-02-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

369 45, G01J 120

Patent

active

049009109

ABSTRACT:
In a system for detecting the position of an objective lens which is movably suspended and can be moved along a predetermined direction, a mirror is fixed to the objective lens and is moved with the objective lens along the predetermined directions. A fixed base is so arranged to face the mirror and light emitting element and photodetectors are arranged along the predetermined direction or the fixed base. Cylindrical light shielding member is located between the photodetectors and the element and a differential amplifier is connected to the photodetectors.

REFERENCES:
patent: 4425043 (1984-01-01), van Rosmalen
patent: 4561081 (1985-12-01), Janssen et al.
patent: 4614863 (1986-09-01), Sato
patent: 4634853 (1987-01-01), Kanamaru
patent: 4641020 (1987-02-01), Iwai

Affiliated with

Also associated with

Rating

System for detecting the position of an objective lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for detecting the position of an objective lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for detecting the position of an objective lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1169787