WIDE-ANGLE ORTHOSCOPIC AERIAL PHOTO LENS OF SYMMETRICAL TYPE,
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 22, 1965
- Accession Number
- AD0610653
Entities
People
- A. Sh. Shakhverdov
- M. M. Rusinov
- N. A. Agal'tsova
- P. D. Ivanov
Organizations
- National Air and Space Intelligence Center