Device for optic, preferably visual determination of a certain p

Details Device for optic, preferably visual determination of a certain p Device for optic, preferably visual determination of a certain p

1977-10-11

1979-09-04

Corbin, John K.

Optics: measuring and testing

By polarized light examination

With light attenuation

250237G, 356153, 356401, G01B 1127

Patent

active

041666992

ABSTRACT:
A device or planoscope for determining a certain plane through the use of a change in an angle of bands of a moire interference pattern. The device may have several sets of screens of opaque lines separated by transparent lines. Each set of screens has a rearward screen of lines and two forward screens of lines. The first forward screen is angled relative to the length of the rearward screen and the second forward screen is parallel to the rearward screen and is located adjacent a side of the first forward screen. The lines of all three screens are parallel to each other and to the length of the rearward screen. The number of lines per unit width of the rearward screen is different than the number of lines per unit width of the forward screens. When the rearward screen is viewed through the forward screens in the certain plane, the bands of the moire interference pattern which arises are parallel to the screen lines. When the rearward screen is viewed through the forward screens outside of the certain plane, the bands of the interference pattern formed by the rearward screen and the second forward screen are parallel to the screen lines, while the bands of the interference pattern formed by the rearward screen and the first forward screen are angled relative to the screen lines.

REFERENCES:
patent: 3572942 (1971-03-01), Te Kronnie
patent: 3604813 (1971-09-01), Te Kronnie

Affiliated with

Also associated with

Rating

Device for optic, preferably visual determination of a certain p 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 for optic, preferably visual determination of a certain p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for optic, preferably visual determination of a certain p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2126939