Device and method for testing optical elements

Details Device and method for testing optical elements Device and method for testing optical elements

1993-02-09

1995-08-01

Mintel, William

Optics: measuring and testing

Inspection of flaws or impurities

Transparent or translucent material

356431, 356124, G01N 2115

Patent

active

054384052

ABSTRACT:
A system for grading and evaluating optical elements, such as lenses, filters, reticules and the like, where the tested element is scanned by at least one wedge shaped light beam, which has an angle of about 5 degrees to 35 degrees, and which intersects the surface of the optical element in the form of a narrow rectangle, and at an angle with the surface of the element. Beyond the optical element there is arranged a rotating mask which rotates synchronized with the rotating light beam, so that no direct light reaches an array of photoelements positioned beyond the mask, which array receives light pulses resulting from surface defects and internal defects of the tested optical element. The light signals reaching the said array are evaluated and thus the quality of the optical element is deduced.

REFERENCES:
patent: 3788749 (1974-01-01), George
patent: 3813173 (1974-05-01), Teter
patent: 3892494 (1975-07-01), Baker et al.
patent: 3988068 (1976-10-01), Spragu
patent: 4815844 (1989-03-01), Schmalfuss et al.
patent: 4822165 (1989-04-01), Schmalfuss et al.
patent: 4841139 (1989-06-01), Schmalfus et al.

Affiliated with

Also associated with

Rating

Device and method for testing optical elements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device and method for testing optical elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for testing optical elements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-736854