CN-122018124-A - Light and small 4k ultra-clear 7-time continuous zooming fog penetrating lens and imaging method

CN122018124ACN 122018124 ACN122018124 ACN 122018124ACN-122018124-A

Abstract

The invention relates to a light and small 4K ultra-clear 7-time continuous zooming fog penetrating lens and an imaging method, wherein the light and small 4K ultra-clear 7-time continuous zooming fog penetrating lens comprises an optical system, the optical system of the lens comprises a front fixed lens group, a variable-magnification lens group, a compensation lens group and a rear fixed lens group which are sequentially arranged from left to right along a light incident light path, the front fixed lens group comprises a first gluing group, a plano-convex lens C and a positive crescent lens D, the variable-magnification lens group comprises a negative crescent lens E, a biconcave lens F, a second gluing group and a biconcave lens H, the compensation lens group comprises a biconvex lens I, a negative crescent lens J, a third gluing group and a plano-convex lens L, the continuous zooming closed-loop control function is realized, the wide-range real-time ultra-clear imaging can be performed, the lens can adapt to the use requirements of a severe environment, and the application scene such as unmanned monitoring and early warning, and the color filter is arranged at the rear end of the lens, and the lens can adapt to the use requirements under severe environment and the application scene is widened.

Inventors

ZHOU BAOCANG
XIAO WEIJUN
LI HAIJUN
HUANG YOUJING
YANG CAIFU

Assignees

福建福光股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260130

Claims (7)

1. The light and small 4K ultra-clear 7-time continuous zooming fog penetrating lens is characterized in that the optical system of the lens comprises a front fixed lens group, a variable magnification lens group, a compensation lens group, a rear fixed lens group and a color filter, wherein the front fixed lens group comprises a first bonding group, a plano-convex lens C and a positive crescent lens D, the first bonding group is closely connected with a negative crescent lens A and a biconvex lens B, the plano-convex lens C and the positive crescent lens D are sequentially arranged from left to right, the variable magnification lens group comprises a negative crescent lens E, a biconcave lens F and a biconcave lens G which are closely connected, the second bonding group is closely connected with a biconcave lens H, the compensation lens group comprises a biconvex lens I, a negative crescent lens J and a biconvex lens K which are closely connected, and a plano-convex lens L which are sequentially arranged from left to right, and the rear fixed lens group comprises a negative crescent lens M, a positive crescent lens N, a negative crescent lens O and a biconvex lens P which are closely connected with a fourth bonding group, a negative crescent lens Q, a negative crescent lens R and a biconvex lens T which are closely connected with a biconvex lens T.
2. The light and small 4k ultra-clear 7-time continuous zooming fog-penetrating lens is characterized in that the air interval between the front fixed lens group and the variable-magnification lens group is 5.3mm-36.8mm, the air interval between the variable-magnification lens group and the compensation lens group is 69.3mm-1.4mm, and the air interval between the compensation lens group and the rear fixed lens group is 4.4mm-40.8mm.
3. The light and small 4k ultra-clear 7-time continuous zoom lens according to claim 1, wherein the on-axis distance between the lenses satisfies the following relationship, the air space between the first bonding group and the plano-convex lens C is 0.1mm, the air space between the plano-convex lens C and the positive-moon lens D is 0.2mm, the air space between the negative-crescent lens E and the second bonding group is 4.0mm, the air space between the second bonding group and the biconcave lens H is 1.0mm, the air space between the biconvex lens I and the third bonding group is 0.1mm, the air space between the third bonding group and the plano-convex lens L is 0.1mm, the air space between the negative-crescent lens M and the positive-moon lens N is 0.1mm, the air space between the positive-moon lens N and the fourth bonding group is 16.3mm, the air space between the fourth bonding group and the negative-crescent lens Q is 11.1mm, the air space between the negative-moon lens R and the negative-crescent lens R is 0.1mm, and the air space between the negative-moon lens R and the negative-crescent lens R is 13.1 mm.
4. The light and small 4K ultra-clear 7-time continuous zooming lens as described in claim 1, wherein the biconvex lens B, the plano-convex lens C, the positive meniscus lens D, the biconvex lens K and the plano-convex lens L are all made of ultra-low dispersion optical glass.
5. The light and small 4k ultra-clear 7-time continuous zooming fog lens is characterized in that a focusing main lens barrel, a main lens barrel and a rear lens barrel are sequentially arranged on the lens from left to right, a front lens barrel is arranged in the focusing main lens barrel, a zooming sliding frame and a compensating sliding frame are arranged in the main lens barrel, the zooming sliding frame and the compensating sliding frame are respectively provided with a zooming lens barrel and a compensating lens barrel, and the front fixed lens group, the zooming lens group, the compensating lens group and the rear fixed lens group are respectively arranged on the front lens barrel, the zooming lens barrel, the compensating lens barrel and the rear lens barrel.
6. The light and small 4k ultra-clear 7-time continuous zooming fog-penetrating lens is characterized by further comprising an electric focusing mechanism, an electric zooming mechanism, an electric color filter switching mechanism and a detector camera assembly, wherein the electric focusing mechanism adopts a front fixed lens group as a focusing moving group, the electric zooming mechanism respectively drives the zoom lens group and the compensation lens group to do linear reciprocating motion through a zoom sliding frame and a compensation sliding frame so as to complete continuous zooming switching of the lens, the electric color filter switching mechanism is connected with a diaphragm seat and controls a color filter turntable to rotate through the electric color filter switching mechanism, and the detector camera assembly is arranged on the electric color filter switching mechanism.
7. An imaging method applied to the light and small 4K ultra-clear 7-time continuous zooming fog lens is characterized by comprising the following steps of sequentially imaging light rays on an imaging surface after passing through a negative crescent lens A, a biconvex lens B, a plano-convex lens C, a positive crescent lens D, a negative crescent lens E, a biconcave lens F, a biconvex lens G, a biconcave lens H, a biconvex lens I, a negative crescent lens J, a biconvex lens K, a plano-convex lens L, a negative crescent lens M, a positive crescent lens N, a negative crescent lens O, a biconvex lens P, a negative crescent lens Q, a negative crescent lens R, a biconvex lens S and a negative crescent lens T from left to right.

Description

Light and small 4k ultra-clear 7-time continuous zooming fog penetrating lens and imaging method Technical Field The invention relates to the technical field of lenses, in particular to a light and small 4k ultra-clear 7-time continuous zooming fog-penetrating lens and an imaging method. Background In a visible light imaging system, along with application scenes generated by different requirements, the light and small 4k ultra-clear 7-time continuous zoom lens with the fog penetrating function has greater advantages in a plurality of practical application scenes compared with the traditional zoom optical lens. In view of this, the present invention has been developed. Disclosure of Invention In view of the defects of the prior art, the technical problem to be solved by the invention is to provide the light and small 4k ultra-clear 7-time continuous zooming fog penetrating lens and the imaging method, which are reasonable in design, realize light and small ultra-clear continuous zooming with fog penetrating function and widen application scenes. In order to solve the technical problems, the technical scheme is that the light and small 4K ultra-clear 7-time continuous zooming fog penetrating lens comprises an optical system and is characterized in that the optical system of the lens comprises a front fixed lens group, a variable magnification lens group, a compensation lens group, a rear fixed lens group and a color filter, wherein the front fixed lens group comprises a first bonding group, a plano-convex lens C and a positive crescent lens D which are sequentially arranged from left to right, the first bonding group is formed by a negative crescent lens A and a biconvex lens B which are sequentially arranged from left to right, the variable magnification lens group comprises a negative crescent lens E, a biconcave lens F and a biconvex lens G which are sequentially arranged from left to right, the compensation lens group comprises a biconvex lens I, a negative crescent lens J and a biconvex lens K which are sequentially arranged from left to right, the rear fixed lens group comprises a negative crescent lens M, a positive crescent lens N, a negative crescent lens P and a negative crescent lens Q, a negative crescent lens S and a positive crescent lens Q, and a negative crescent lens Q which are sequentially arranged from left to right, and a positive crescent lens S and a negative crescent lens Q and a positive lens Q are sequentially bonded. Preferably, the air interval between the front fixed lens group and the variable-magnification lens group is 5.3mm-36.8mm, the air interval between the variable-magnification lens group and the compensation lens group is 69.3mm-1.4mm, and the air interval between the compensation lens group and the rear fixed lens group is 4.4mm-40.8mm. Preferably, the on-axis distance between the lenses satisfies the following relationship that the air space between the first bonding group and the plano-convex lens C is 0.1mm, the air space between the plano-convex lens C and the positive crescent lens D is 0.2mm, the air space between the negative crescent lens E and the second bonding group is 4.0mm, the air space between the second bonding group and the biconcave lens H is 1.0mm, the air space between the biconvex lens I and the third bonding group is 0.1mm, the air space between the third bonding group and the plano-convex lens L is 0.1mm, the air space between the negative crescent lens M and the positive crescent lens N is 0.1mm, the air space between the positive crescent lens N and the fourth bonding group is 16.3mm, the air space between the fourth bonding group and the negative crescent lens Q is 11.1mm, the air space between the negative crescent lens Q and the negative crescent lens R is 13.7mm, and the air space between the negative crescent lens R and the fifth bonding group is 0.1mm. Preferably, the biconvex lens B, the plano-convex lens C, the positive meniscus lens D, the biconvex lens K, and the plano-convex lens L are all made of ultra-low dispersion optical glass. Preferably, the lens is sequentially provided with a focusing main lens barrel, a main lens barrel and a rear lens barrel from left to right, a front lens barrel is arranged in the focusing main lens barrel, a zooming carriage and a compensating carriage are arranged in the main lens barrel, the zooming carriage and the compensating carriage are respectively provided with a zooming lens barrel and a compensating lens barrel, and the front fixed lens group, the zooming lens group, the compensating lens group and the rear fixed lens group are respectively arranged on the front lens barrel, the zooming lens barrel, the compensating lens barrel and the rear lens barrel. Preferably, the lens further comprises an electric focusing mechanism, an electric zooming mechanism, an electric color filter switching mechanism and a detector camera assembly; the electric focusing mechanism selects a front fixed lens group