FIVE-LENS OBJECTIVE WITH HIGH F NUMBER
Abstract
A five-lens objective with high f number with relative aperture 2-2. 5, covering a frame 24 x 36 mm, with insignificant vignetting of the edges of the margin, is distinguished by the fact that for the purpose of simplifying the design there was developed a new type of objective, consisting of five lenses, grouped in three components: first, one meniscus positive lens, and second and third, two lenses each, one of which is positive and the other negative, whereby the negative lenses are turned towards the aperture diaphragm, placed between the second and third components.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 1962
- Accession Number
- AD0295446
Entities
People
- M.d. Mal'tsev
Organizations
- National Air and Space Intelligence Center