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CN-121978823-A - Billion-pixel-level high-resolution long-focus electric power monitoring lens and electronic equipment

CN121978823ACN 121978823 ACN121978823 ACN 121978823ACN-121978823-A

Abstract

The invention discloses a billion-pixel high-resolution long-focus power monitoring lens and electronic equipment. The lens 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 and a twelfth lens in sequence from an object side to an image side along an optical axis, wherein the first lens is provided with positive diopter, an object side is a convex surface, an image side is a concave surface, the second lens is provided with negative diopter, the object side is a convex surface, the image side is a concave surface, the third lens is provided with negative diopter, the object side is a convex surface, the image side is a concave surface, the fourth lens is provided with negative diopter, the object side is a concave surface, the image side is a convex surface, the fifth lens is provided with positive diopter, the object side is a plane, the image side is a convex surface and the like. The invention aims to systematically solve the core problem of coexistence of ultrahigh resolution and severe environmental adaptability through the diopter of each lens, the configuration of the surface type and the introduction of the gluing group.

Inventors

  • WANG JIYUAN
  • SHANGGUAN QIUHE
  • WU YUTING

Assignees

  • 厦门力鼎光电股份有限公司

Dates

Publication Date
20260505
Application Date
20260203

Claims (10)

  1. 1. The billion-pixel-level high-resolution long-focus power monitoring lens is characterized in that the lens sequentially 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 and a twelfth lens from an object side to an image side along an optical axis; The first lens has positive diopter, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens has negative diopter, the object side surface is a convex surface, and the image side surface is a concave surface; the third lens has negative diopter, the object side surface is a convex surface, and the image side surface is a concave surface; the fourth lens is provided with negative diopter, the object side surface is a concave surface, and the image side surface is a convex surface; the fifth lens has positive diopter, the object side surface is a plane, and the image side surface is a convex surface; the sixth lens element with negative refractive power has a concave object-side surface and a convex image-side surface; the fifth lens and the sixth lens are combined into a double-cemented lens with positive diopter; the seventh lens is a biconvex lens with positive diopter; the eighth lens is a biconvex lens with positive diopter; The ninth lens is a biconcave lens with negative diopter; the eighth lens and the ninth lens are combined into a double-cemented lens with negative diopter; the tenth lens is a biconvex lens with positive diopter; the eleventh lens has negative diopter, the object side surface is concave, and the image side surface is convex; The twelfth lens has positive diopter, the object side surface is a convex surface, and the image side surface is a concave surface.
  2. 2. A billion-pixel high-resolution tele power monitoring lens as claimed in claim 1, The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens and the twelfth lens adopt glass lenses.
  3. 3. A billion-pixel high-resolution tele power monitoring lens as claimed in claim 1, The eleventh lens is a double-sided aspheric lens.
  4. 4. A billion-pixel high-resolution tele power monitoring lens as claimed in claim 3, The lens satisfies the following conditional expression: 1.68<Nd 11 <1.75 Wherein Nd 11 is the refractive index of the eleventh lens.
  5. 5. The one billion-pixel high-resolution tele power monitoring lens of claim 1-4, wherein, The lens satisfies the following conditional expression: 1＜|f 1 /F|＜2、1＜|f 2 /F|＜2、3＜|f 3 /F|＜4、2＜|f 4 /F|＜3、1＜|f 5 /F|＜2、2＜|f 6 /F|＜3、1＜|f 7 /F|＜2、1＜|f 8 /F|＜2、0.1＜|f 9 /F|＜1、0.8＜|f 10 /F|＜1.5、1＜|f 11 /F|＜2、1＜|f 12 /F|＜2 Wherein F 1 ~ f 12 is the focal length of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens and the twelfth lens in sequence, and F is the focal length of the lens.
  6. 6. A billion-pixel high-resolution tele power monitoring lens as claimed in claim 5, The lens satisfies the following conditional expression: 2.00<Nd 1 <2.20,25<Vd 1 <30 1.60<Nd 2 <1.65,65<Vd 2 <70 1.45<Nd 3 <1.50,80<Vd 3 <85 1.90<Nd 4 <1.95,30<Vd 4 <35 1.45<Nd 5 <1.50,80<Vd 5 <85 1.80<Nd 6 <1.85,20<Vd 6 <25 1.55<Nd 7 <1.60,65<Vd 7 <70 1.45<Nd 8 <1.50,80<Vd 8 <85 1.80<Nd 9 <1.85,20<Vd 9 <25 1.90<Nd 10 <1.95,15<Vd 10 <20 1.65<Nd 11 <1.70,50<Vd 11 <55 1.80<Nd 12 <1.85,40<Vd 12 <45 wherein Nd 1 ~ Nd 12 is the refractive index of the first lens to the twelfth lens, and Vd 1 ~ Vd 12 is the Abbe number of the twelfth lens.
  7. 7. The one billion-pixel high-resolution tele power monitoring lens of claim 1-4, The lens satisfies the following conditional expression: 0.22<BFL/F<0.26 Wherein BFL is the optical back focal length of the lens, and F is the focal length of the lens.
  8. 8. The one billion-pixel high-resolution tele power monitoring lens of claim 1-4, The lens satisfies the following conditional expression: 0.75<y/F <0.80 Wherein y is the image height of the lens, and F is the focal length of the lens.
  9. 9. The one billion-pixel high-resolution tele power monitoring lens of claim 1-4, The lens satisfies the following conditional expression: 0.05<BFL/TTL <0.07 Wherein BFL is the optical back focal length of the lens, and TTL is the total optical length of the lens.
  10. 10. An electronic device characterized by a billion-pixel high-resolution tele power monitoring lens according to any one of claims 1-9, and An image sensor configured to receive an image formed by the billion-pixel high-resolution tele power monitoring lens.

Description

Billion-pixel-level high-resolution long-focus electric power monitoring lens and electronic equipment Technical Field The invention relates to the technical field of high-resolution long-focus monitoring lenses, in particular to a billion-pixel-level high-resolution long-focus power monitoring lens and electronic equipment. Background The long-distance monitoring technology of the power equipment needs to realize wide-area coverage and sub-centimeter level detail identification at the same time, such as accurate observation of defects of insulator cracks, wire strand breakage and the like. Meanwhile, the monitoring equipment is exposed to outdoor high-altitude environment for a long time, and the requirements of high reliability and environmental tolerance must be met. The conventional optical lens has obvious limitation in meeting the above comprehensive requirements, the performance of the conventional optical lens is limited by the physical resolution limit and the manufacturing process level, and the imaging requirements of large-scale monitoring and extremely high resolution are difficult to be considered. Therefore, developing a billion-pixel-level monitoring lens suitable for the scene becomes a key technical direction for improving the state monitoring capability of the power equipment. In particular, the design of billion-pixel power device monitoring lenses is faced with three major technical challenges. Firstly, the high-resolution imaging challenge is that the lens needs to have billion-pixel high-resolution imaging capability for identifying tiny defects at a long distance, which puts a very high performance index requirement on the design of an optical system. Secondly, the high-level fitting process has the challenge that the actual imaging quality of the high-resolution lens is closely dependent on the precise assembly and calibration process, and the consistency and accuracy of the complex optical system are difficult to ensure in the traditional process level. Finally, the stability of the high-low temperature environment is challenged by the fact that the electric power monitoring lens needs to work for a long time in outdoor day-night and seasonal temperature difference environments, the long-focal-length optical structure is easy to deform and displace under the condition of temperature change, optical axis deviation and image quality degradation are caused, and a severe test is provided for structural design and material stability of the system. In summary, developing a billion-pixel lens suitable for long-distance monitoring of power equipment is a comprehensive technical task of integrating optical design, precision manufacturing and environmental adaptability. The method has the core difficulty of simultaneously overcoming three challenges of high-resolution imaging design, high-precision debugging process and system stability in a wide-temperature-range environment. Breaks through the technical bottlenecks, and has important significance for realizing high-precision and high-reliability intelligent monitoring of the state of the power equipment. Disclosure of Invention In view of the above, the present invention is directed to a billion-pixel high-resolution tele power monitoring lens and an electronic device. The lens can solve at least one technical disadvantage mentioned in the background art. According to an aspect of the present invention, there is provided a billion-pixel-level high-resolution tele power monitoring lens, which is 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 in this order from an object side to an image side along an optical axis; The first lens has positive diopter, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens has negative diopter, the object side surface is a convex surface, and the image side surface is a concave surface; the third lens has negative diopter, the object side surface is a convex surface, and the image side surface is a concave surface; the fourth lens is provided with negative diopter, the object side surface is a concave surface, and the image side surface is a convex surface; the fifth lens has positive diopter, the object side surface is a plane, and the image side surface is a convex surface; the sixth lens element with negative refractive power has a concave object-side surface and a convex image-side surface; the fifth lens and the sixth lens are combined into a double-cemented lens with positive diopter; the seventh lens is a biconvex lens with positive diopter; the eighth lens is a biconvex lens with positive diopter; The ninth lens is a biconcave lens with negative diopter; the eighth lens and the ninth lens are combined into a double-cemented lens with negative diopter; the tenth lens is a biconvex lens with positive diopter; the eleven