DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0610653
Title:
WIDE-ANGLE ORTHOSCOPIC AERIAL PHOTO LENS OF SYMMETRICAL TYPE,
Corporate Author:
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Report Date:
1965-01-22
Abstract:
The proposed lens of symmetrical type differs from the known lenses by the fact, that into the positive component of the lens were introduced additional gluing surfaces, possessing negative optical forces and inverted with concavity toward the diaphragm, and the distances between the centers of curvature of the mentioned surfaces and the center of the diaphragm do not exceed 10 of the radii values of these surfaces. Such an arrangement of the objective lens allows the air gap to increase between lenses at simultaneous correction of the spherical aberration of the objective lens and to place in this gap petals of the central shutter and iris diaphragm. The thickness of the negative lenses of the described lens is 10-12 of the focal distance of the lens, which assures corrections of distortions.
Supplementary Note:
Unedited rough draft trans. of Russian patent 158699 (appl. 798134/26-10, 10 Dec 62).
Pages:
0004
File Size:
0.00MB
