SU945841A1

SU945841A1 - Hydrophoto lens

Info

Publication number: SU945841A1
Application number: SU803217687A
Authority: SU
Inventors: Петр Дмитриевич Иванов; Михаил Михайлович Русинов; Олег Кузьмич Ушаков
Original assignee: Ленинградский Институт Точной Механики И Оптики
Priority date: 1980-11-10
Filing date: 1980-11-10
Publication date: 1982-07-23

Description

Изобретение относитс к оптическому приборостроению, а более конкретно к фотографическим объективам с вынесенным зрачком входа, работающих в одной среде, и может быть использовано в прЬмьшленности при создании гидросъемочных фотоили телевизионных камер.The invention relates to optical instrumentation, and more specifically to photographic lenses with a remote pupil of the entrance operating in the same environment, and can be used in the creation of waterborne photo or television cameras.

Известен гидросъемочный объектив с вынесенным входным зрачком, используемый при проведении подводных съемок . Объектив содержит компенсатор аберраций и силовой компонент. Компенсато .р аберраций выполнен в виде двух плоско-выпуклых линз и расположенного между ними положительного дублета, склеенного из двух линз, а силовой компонент представл ет собой объектив симметричного типа L13Облада достаточно высоким относительным отверстием ( пор дка 1:3), указанные объективы имеют недост аточное угловое поле зрени в водеKnown gidrosemny lens with a remote pupil, used when conducting underwater surveys. The lens contains an aberration compensator and a power component. The compensated aberration is made in the form of two flat-convex lenses and a positive doublet glued between them, glued together from two lenses, and the power component is a lens of a symmetric type L13. It has a relatively high relative aperture (about 1: 3), these lenses lack Atomic angular field of view in water

(до 60°Л что снижает эффективность их использовани .(up to 60 ° L, which reduces the effectiveness of their use.

Известен гидросъемочный объектив с вынесенным входным зрачком, содержащий силовой компонент симметричного типа., компенсатор аберраций, выполненный из трех положительных плосковыпуклых линз и склеенного компонента, установленного перед первой положительной линзой 2J.Known gidrosemny lens with a remote pupil, containing the power component of the symmetric type., The aberration compensator, made of three positive convex lenses and glued component mounted in front of the first positive lens 2J.

Однако этот объектив не позвол ет, увеличить угловое поле зрени выше бО при относительном отверстии 1:3 ,5 из-за ухудшени качества изображе-. ни .However, this lens does not allow to increase the angular field of view above the BO with a relative aperture of 1: 3, 5 due to the deterioration of the image quality. neither

Целью изобретени вл етс создание гидросъемочного объектива с вынесенным входным зрачком, имеющего увеличенное до 90° поле зрени без нарушени коррекции основных аберраций.The aim of the invention is to create a hydro-imaging lens with a retracted entrance pupil having an increased field of vision of up to 90 ° without disturbing the correction of basic aberrations.

Claims

This goal is achieved by the fact that a hydro-shooting lens with a remote entrance pupil, containing 3-9 power components of a symmetric type, an aberration compensator made of three positive flat-convex lenses and a glued component mounted before the first positive lens, is made of bovine and double convex concentric lenses, the refractive index of a flat-bent lens is equal to the square of the refractive index of the concentric lens, the second is positive compensator lens is convex to the image, and the power component is made of two plano-convex and disposed therebetween biconcave lenses. The drawing shows the principal optical layout of the proposed hydro-lens. A hydro-shooting lens with a remote pupil, the entrance consists of the power component 1 symmetrical with respect to the plane of the material diaphragm and the aberration compensator P. The compensator is made in the form of three positive lenses 1-3 and glued from a flat-curved 4 lens and component two. The proposed lens with a background of 12.3 and a field angle of up to 90 with a relative aperture ratio of 1: 3 is quite satisfactory for this class of lenses image quality. Claims of a hydro imaging lens with a remote 19 (m / pupil containing a symmetric type power component, an aberration compensator made of three positive flat-convex lenses and a glued component mounted in front of the first positive lens, characterized in that, in order to increase the angle of the field of view, glued the compensator component is made of planar and two-convex concentric lenses arranged along the edge; the refractive index of the flat-concave lens is equal to the square of the indicator the focus is on the concentric lens, the second positive compensator lens is convex to the image, and the power component is made of two flat convex lenses and a double-bent lens placed between them. Information No. Information taken into account in the examination 1. USSR author's certificate No., Cl. 02 В 11/3, 1976. 2, USSR Copyright Certificate, No. 622028, class G 02 B 1/3, 1977 (prototype)