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CN-121995649-A - Wide-angle optical lens

CN121995649ACN 121995649 ACN121995649 ACN 121995649ACN-121995649-A

Abstract

The invention discloses a wide-angle optical lens, which comprises a cambered surface lens body, wherein the front view of the lens body is of a trapezoid structure with a wide upper part and a narrow lower part, the transverse camber of the lens body is continuously graded along the vertical direction and is distributed in a gradient decreasing way from bottom to top, and meanwhile, the lens body is gradually inclined outwards from bottom to top. The wide-angle optical lens provided by the invention effectively solves the problem of limited visual field of the traditional lens through a unique trapezoid structure and transverse camber gradient design, has the advantages of an inclination compensation mechanism, high nose bridge crowd adaptation and the like, has obvious advantages in the aspects of improving visual experience, guaranteeing safety and the like, and has important application value in the technical field of optical lenses.

Inventors

  • CHEN YUXIANG

Assignees

  • 厦门虹泰光学有限公司

Dates

Publication Date
20260508
Application Date
20260325

Claims (9)

  1. 1. A wide-angle optical lens is characterized by comprising a cambered surface lens body, wherein the front view of the lens body is of a trapezoid structure with a wide upper part and a narrow lower part, the transverse camber of the lens body is continuously gradually changed in the vertical direction and gradually decreased from bottom to top, and meanwhile, the lens body is gradually inclined outwards from bottom to top.
  2. 2. The wide angle optical lens of claim 1, wherein the lens body is inclined outwardly at an angle in the range of 1 DEG to 15 deg.
  3. 3. The wide-angle optical lens of claim 1, wherein the gradient change of the transverse camber adopts smooth curved transition, and the change amount of the transverse camber is 0.006-0.007 per millimeter in the height direction of the lens.
  4. 4. The wide angle optical lens of claim 3, wherein the lateral camber of the lens body top is in the range of 2.5-7.5C.
  5. 5. The wide angle optical lens of claim 3, wherein the lateral camber of the bottom of the lens body is in the range of 3.0-7.0C.
  6. 6. The wide-angle optical lens of claim 1, wherein the temporal field of view of the wide-angle optical lens is greater than or equal to 70 DEG, the upper field of view is greater than or equal to 35, and the lower field of view is greater than or equal to 35.
  7. 7. The wide-angle optical lens of claim 1, wherein the lens body has an optical center thickness in a range of 1.4mm to 2.2 mm.
  8. 8. The wide-angle optical lens of claim 1, wherein the lens body has an optical center thickness in a range of 1.8mm to 2.0 mm.
  9. 9. The wide angle optical lens of claim 1, wherein the front view of the lens body is in an isosceles trapezoid structure with a wider upper portion and a narrower lower portion.

Description

Wide-angle optical lens Technical Field The invention relates to the technical field of optical lenses, in particular to a wide-angle optical lens. Background In the technical field of optical lenses, conventional integrated lenses have certain limitations in design. The lateral curvature, i.e. the radius of curvature, of the upper and lower portions of such a lens 1' is identical, and the front, side and top views thereof are shown with reference to a, b and c in fig. 1. In practical applications, when assembling a nose pad using such a lens substrate, the upper half of the lens needs to be tilted away from the face of the human body, i.e., outwardly, in order to fit the structure of the face of the human body, as shown in fig. 1 b. After tilting outward, the field of view of the upper lens half narrows (from ABC to AB 'C') as shown in fig. 2 a. When the traditional lens is inclined outwards by 10 degrees, the upper visual field can be compressed by about 15% -20%. When people observe with glasses in daily life, the narrowing of the visual field can influence visual experience, and the requirement for a wide visual field cannot be met. In scenes requiring a large field of view, such as driving, sports, etc., the limited field of view may bring potential safety hazards or inconvenient use. Disclosure of Invention The invention aims to provide a wide-angle optical lens which solves the problem that the prior lens is limited in view field. In order to achieve the purpose, the wide-angle optical lens comprises a cambered surface lens body, wherein the front view of the lens body is of a trapezoid structure with a wide upper part and a narrow lower part, the transverse camber of the lens body is continuously gradually changed along the vertical direction and is gradually and progressively distributed from bottom to top, and meanwhile, the lens body is gradually inclined outwards from bottom to top. Further, the angle range of the outward inclination of the lens main body is 1-15 degrees. Further, the gradient change of the transverse camber adopts smooth curved surface transition, and the change amount of the transverse camber per millimeter in the height direction of the lens is 0.006-0.007. Further, the transverse camber range of the top of the lens main body is 2.5-7.5C. Further, the lateral camber range of the bottom of the lens main body is 3.0-7.0 ℃. Further, the temporal side visual field of the wide-angle optical lens is more than or equal to 70 degrees, the upper visual field is more than or equal to 35, and the lower visual field is more than or equal to 35. Further, the optical center thickness range of the lens main body is controlled to be 1.4 mm-2.2 mm. Further, the optical center thickness range of the lens main body is controlled to be 1.8 mm-2.0 mm. Further, the front view of the lens main body is in an isosceles trapezoid structure with a wide upper part and a narrow lower part. After the scheme is adopted, the beneficial effects of the invention are as follows: Tilt compensation mechanism: According to the scheme, through the design of the trapezoid structure and the transverse camber gradient, the transverse camber of the lens main body is gradually reduced from bottom to top, the visual field is gradually widened from bottom to top, and the upper half part is in an outwards inclined state relative to the lower half part. When assembling with the nose pad, traditional lens is the human face structure of adaptation, and the outer slope of lens first half can lead to the field of vision to be compressed, influences visual experience. The lens of the scheme can be naturally attached to the face structure without additionally adjusting the inclination angle, so that the compression of the visual field caused by the inclination of the lens is avoided, the width of the original visual field is completely reserved, and the visual field is widened. The test proves that the optical performance of the lens can ensure that the temporal visual field of a wearer is more than or equal to 70 degrees, the upper visual field is more than or equal to 35 degrees, and the lower visual field is more than or equal to 35 degrees, which is obviously superior to the conventional lens. The wide-angle characteristic is particularly suitable for scenes with high requirements on peripheral vision, such as driving, sports and the like, and can effectively improve the visual experience and safety of a user. High nose bridge crowd adaptation: For users with a higher bridge, requiring a larger nose pad, the lens may be slightly camber. Although the visual field is compressed and narrowed to a certain extent after the lens is inclined outwards, the curvature of the upper half part of the lens is optimally designed, so that the formed wide-angle effect can compensate the visual field narrowing caused by slight inclination, and compared with the traditional lens, the lens has obvious advantages and can still maintain the visua