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2 results about "Teleconverter" patented technology

A teleconverter (sometimes called tele extender) is a secondary lens mounted between a camera and a photographic lens which enlarges the central part of an image obtained by the objective lens. A 2× teleconverter for a 35 mm camera would enlarge the central 12×18 mm part of an image to the size of 24×36 mm in the standard 35 mm film format.

A zoom lens

The application discloses a teleconverter lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens and a fifteenth lens arranged in sequence along an optical axis from an object plane to an image plane, wherein the first lens and the second lens are cemented, the third lens and the fourth lens are cemented, the seventh lens and the eighth lens are cemented, the tenth lens and the eleventh lens are cemented, and the thirteenth lens and the fourteenth lens are cemented. The teleconverter lens provided by the embodiment of the application realizes multiple performances such as 3.36 times high magnification, F2.63 large aperture and distortion lower than 0.6% through the structural design of 15 lenses and the matching of the focal power of each lens, and meanwhile, the total length of the teleconverter lens is controlled within 105 mm, so that the telephoto experience with high performance and portability is provided for users.
Owner:东莞市宇承科技有限公司