Optical lens
A technology of optical lens and optical axis, which is applied in the direction of optics, optical components, instruments, etc., and can solve the problems of shading sheet blocking stray light, small inner diameter, etc.
Pending Publication Date: 2022-05-13
GENIUS ELECTRONICS OPTICAL XIAMEN
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Problems solved by technology
However, because the shading sheet is very thin and has a small inner diameter, it is easy to warp in the opposite direction to the lens when it is subjected to heat or force, thereby changing the inner diameter of the shading sheet, which affects the effect of the shading sheet blocking stray light
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[0031] Before starting to describe the present invention in detail, at first clearly represent the symbol explanation in the accompanying drawings: 1: lens; 2, 2': shading sheet; 3: gasket; 11, 21, 31: the first side; 12, 22, 32: the second side; 211: the third surface; 212: the fourth surface; 221: the first surface; 222: the second surface; 311: bearing surface; 312: connecting surface; A1: first side; A2: second side; B: slope; D: radial direction; D1, D2, L, S: distance; I: optical axis; P: inner periphery; R1: second A reference plane; R2: second reference plane; T1, T2: thickness; V, V': concave portion; X: convex portion; α, β: chamfer; θ: included angle.
[0032] figure 1 is a schematic diagram of the optical lens according to the first embodiment of the present invention. Please refer to figure 1 , An embodiment of the present invention provides an optical lens 10, which includes a light shielding film 2 and a spacer 3 in sequence along the optical axis I from the ...
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The invention discloses an optical lens. The anti-dazzling screen and the cushion ring are sequentially arranged from the first side to the second side along the optical axis. And no other element is arranged between the anti-dazzling screen and the gasket. The anti-dazzling screen and the cushion ring each comprise a first side face facing the first side and a second side face facing the second side. The second side of the anti-dazzling screen includes a first surface. The first side face of the cushion ring comprises a bearing face and a connecting face which are connected with each other, and the connecting face is provided with a protruding part. The section line of the bearing surface of the cushion ring in the radial direction is a straight line and abuts against the first surface of the anti-dazzling screen, and the abutting position of the bearing surface and the first surface falls on the first reference plane. The anti-dazzling screen and the most protruding part of the protruding part are located on the same side of the first reference plane. The optical lens can effectively solve the problem that the inner diameter of the anti-dazzling screen is affected due to warping of the anti-dazzling screen.
Description
technical field [0001] The invention relates to the field of optical imaging, in particular to an optical imaging lens. Background technique [0002] In order to prevent stray light from entering the imaging surface and affecting the optical imaging quality, a light-shielding sheet can be arranged between the lenses to achieve the effect of blocking stray light. And because the optical boundaries of adjacent lenses in the optical lens may be too far away, it is often necessary to arrange a gasket between the lens assembly parts so that the lenses can maintain an appropriate distance from each other. Washers are a common means. However, since the shading sheet is very thin and has a small inner diameter, it is easy to warp in the opposite direction to the lens when subjected to heat or force, thereby changing the inner diameter of the shading sheet, which affects the stray light shielding effect of the shading sheet. Contents of the invention [0003] The invention provid...
Claims
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IPC IPC(8): G02B13/00G02B7/00G02B7/02
CPCG02B13/00G02B7/00G02B7/02G02B5/003G02B7/021G02B5/005
Inventor 詹海斌傅维威徐子文
Owner GENIUS ELECTRONICS OPTICAL XIAMEN