![]() ![]() the eighth component, which is a biconvex lens, the ninth component having a positive power, which is cemented of two lenses, of which the first is a negative meniscus with its concave surface facing the image, and the second one is positive, the tenth component, which is a negative meniscus with its convex surface facing the image, and the eleventh component having a positive power, which is built up of two lenses cemented together, the first lens being a positive biconvex one and the second lens being a negative biconcave one. To achieve this technical object, there is a wide-angle lens with a large relative aperture, which contains an aperture diaphragm and seven optical components arranged along the pathway of luminous radiation from the object to the image as follows: the first positive component, the second one, which is a negative meniscus having the concave surface facing the image side, the third negative component, the fourth and the fifth components, the sixth negative component, the seventh positive component, and the aperture diaphragm located between the fifth and the sixth components, wherein the fourth component has a negative power and is made up of two lenses cemented together, the first lens being a biconcave one and the second lens being a biconvex one, the fifth component is a biconvex lens having a positive power, the sixth component is a single biconcave lens, the seventh component is a meniscus with its concave surface facing the object, and after the seventh component several additional ones are introduced, i.e. The invention is aimed at providing a lens having a wider angle of view, increased relative aperture, and higher quality of images. G02B13/06- Panoramic objectives So-called "sky lenses" including panoramic objectives having reflecting surfaces.G02B13/00- Optical objectives specially designed for the purposes specified below.G02B9/64- Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e.G02B9/00- Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e.G02B- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS. ![]() XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2.239000011159 matrix material Substances 0.000 description 2.238000004519 manufacturing process Methods 0.000 description 2.125000001145 hydrido group Chemical group * 0.000 description 2.230000037361 pathway Effects 0.000 claims abstract description 8.230000003287 optical Effects 0.000 claims abstract description 16.230000005499 meniscus Effects 0.000 claims abstract description 62.Application granted granted Critical Publication of US7660048B1 publication Critical patent/US7660048B1/en Status Expired - Fee Related legal-status Critical Current Anticipated expiration legal-status Critical Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Impulse ZAO filed Critical Impulse ZAO Priority to US12/338,081 priority Critical patent/US7660048B1/en Assigned to ZAO "IMPULSE" reassignment ZAO "IMPULSE" ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Impulse ZAO Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Kozodoi Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US12/338,081 Inventor Valery V. Google Patents Wide angle lens with large apertureÄownload PDF Info Publication number US7660048B1 US7660048B1 US12/338,081 US33808108A US7660048B1 US 7660048 B1 US7660048 B1 US 7660048B1 US 33808108 A US33808108 A US 33808108A US 7660048 B1 US7660048 B1 US 7660048B1 Authority US United States Prior art keywords component lens positive negative surface facing Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US7660048B1 - Wide angle lens with large aperture US7660048B1 - Wide angle lens with large aperture ![]()
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