Apparatus for measuring degree of inclination of objective lens

Details Apparatus for measuring degree of inclination of objective lens Apparatus for measuring degree of inclination of objective lens

1996-11-26

1998-04-21

Font, Frank G.

Optics: measuring and testing

Angle measuring or angular axial alignment

2502015, G01B 1126, G01C 100

Patent

active

057423830

ABSTRACT:
An apparatus for measuring the degree of inclination of an objective lens for an optical pickup is provided. The apparatus for measuring the degree of inclination of the objective lens includes a light source, a collimator positioned between the light source and the objective lens, for collimating light emitted from the light source, a condensing lens for converging light passed through the collimator on the objective lens, a light receiving element for receiving light passed through the condensing lens after being reflected from the objective lens, and an optical path converting portion positioned along the optical path between the collimator and the condensing lens, for directing part of the light entering the optical path converting portion from the light source to travel toward the condensing lens and directing the remaining light toward the light receiving element, wherein a difference between the location of the light directly entering the light receiving element after being emitted from the optical path converting portion and the location of the light entering the light receiving element after being reflected from the objective lens is detected to measure the degree of inclination of the objective lens.

REFERENCES:
patent: 3601613 (1971-08-01), Hock
patent: 4502783 (1985-03-01), Lau et al.
patent: 4650298 (1987-03-01), Katoh et al.
patent: 5410532 (1995-04-01), Ohno et al.
patent: 5559639 (1996-09-01), Nakagishi et al.

Affiliated with

Also associated with

Rating

Apparatus for measuring degree of inclination of 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 Apparatus for measuring degree of inclination of objective lens , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring degree of inclination of objective lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2063383