Day and night confocal high-definition lens with large target area

Abstract

The invention relates to a day and night confocal high-definition lens with a large target area. The day and night confocal high-definition lens is characterized in that a front fixing group A with positive focal power, a zooming group B with negative focal power, a rear fixing group C with positive focal power and a compensating group D with positive focal power are sequentially arranged in an optical system of the lens along a light incident direction from left to right; the front fixing group A comprises a positive crescent lens A-1, a positive crescent lens A-2 and a first gluing group with a negative crescent lens A-3 and double convex lenses A-4, and the negative crescent lens A-3 and the double convex lenses A-4 are hermetically connected with one another; the zooming group B comprises double concave lenses B-1 and a second gluing group with double concave lenses B-2 and double convex lenses B-3, and the double concave lenses B-2 and the double convex lenses B-3 are hermetically connected with one another; the rear fixing group C comprises a positive crescent lens C-4 and a third gluing group with double convex lenses C-1, double convex lenses C-2 and a negative crescent lens B-3, and the double convex lenses C-1, the double convex lenses C-2 and the negative crescent lens B-3 are hermetically connected with one another; the compensating group D comprises a negative crescent lens D-4 and a fourth gluing group with double convex lenses D-1, a negative crescent lens D-2 and double convex lenses D-3, and the double convex lenses D-1, the negative crescent lens D-2 and the double convex lenses D-3 are hermetically connected with one another. The day and night confocal high-definition lens has the advantages of high optical indexes and resolution and adaptability to requirements of high-definition video camera shooting.

Description

technical field [0001] The invention relates to a day and night confocal large-target high-definition lens, which belongs to the field of optical imaging devices of video technology. Background technique [0002] With the increasingly dense traffic network and increasingly busy traffic, in order to maintain traffic safety, prevent traffic jams, and achieve orderly under busy road conditions; it is of practical significance to provide a day and night confocal high-resolution lens for the development of intelligent transportation systems. Most of the zoom lenses currently on the market are simple in structure and low in performance indicators. In terms of image clarity, they can only be adapted to standard-definition CCD or CMOS cameras with 2-3 million pixels. The need for "seeing" in the monitoring field. This resolution is far from meeting the requirements of today's high-definition cameras. Contents of the invention [0003] In view of this, the purpose of the present ...

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This resolution is far from meeting the requ

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