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Optical lens, method for applying light-absorbing coating thereto, imaging lens

A technology for absorbing coatings and lenses, applied in optics, lenses, optical components, etc., can solve the problems of reduced imaging quality and effect, poor optical performance of lenses, stray light at lens notches, etc., to reduce blacking time and achieve high-quality imaging The effect, the effect of guaranteeing the imaging effect

Active Publication Date: 2019-09-13
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of the cutting process, the cut lens will have a high probability of notch stray light after assembly
[0003] When the above lenses are assembled into a lens, stray light will appear, making the optical performance of the lens poor, and the imaging quality and effect will be greatly reduced

Method used

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  • Optical lens, method for applying light-absorbing coating thereto, imaging lens
  • Optical lens, method for applying light-absorbing coating thereto, imaging lens
  • Optical lens, method for applying light-absorbing coating thereto, imaging lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Figure 11 It schematically shows the special jig 5 for sucking the lens 1 according to the present invention. Figure 12 Schematic representation of the structure of the special jig 5 for picking up the lens 1 . Figure 13 It schematically shows the top view of the special jig for picking up the lens.

[0097] In this embodiment, the lens 1 to be blackened placed on the placement plate 6 is picked up by a special jig 5 with an air suction function. The special jig 5 absorbs the lens 1, and then drives the lens 1 to move to such as Figure 14 The image recognition area of ​​the shown high-resolution image recognition system 7 is recognized, and the position of the notch structure 1051 is mainly recognized here. The specific recognition process is as follows: the lens 1 is picked up by the special jig 5 and sent to the top of the high-resolution image recognition system 7 . The lens 1 is taken by the camera of the high-resolution image recognition system 7 to form a ...

Embodiment 2

[0103] In this embodiment, the steps before the lens 1 is blackened are the same as those in Embodiment 1, and will not be repeated here.

[0104] In this embodiment, the area of ​​the notch structure 1051 to be blackened is larger than the area of ​​the matting material releasing hole 801 of the spraying device 8 in the direction of the optical axis of the lens 1 . Therefore, the notch structure 1051 cannot be fully covered by one spraying of the matting material by the spraying device. Therefore, the special jig 5 drives the lens 1 to move relative to the spraying device 8 in the direction of the optical axis of the lens 1 , and the relative displacement is determined according to the blackened area of ​​the notch structure 1051 . After the secondary displacement and movement (that is, after the first blackening, the position is adjusted after not all blackening), the spraying device 8 starts the secondary spraying, and the process is as follows: Figure 19 and Figure 20 ...

Embodiment 3

[0107] In this embodiment, the steps before the lens 1 is blackened are the same as those in Embodiment 1 and Embodiment 2, and will not be repeated here.

[0108] In this embodiment, the area for releasing the matting material is determined according to the size of the notch structure 1051 in the design drawing. Determine the size of the release area of ​​the matting material according to the notch area of ​​the drawing, and then input the set value into the control computer of the matting material release hole 801, and draw the area of ​​releasing the matting material in the control computer. The area of ​​the matting material released by the spraying device 8 is set to be smaller than the light-shielding surface 1051a of the notch structure 1051, so the multi-stage blackening method is used to blacken the lens 1 .

[0109] In this embodiment, the action of the spraying device 8 releasing the matting material is controlled by the control computer, and one blackening is trigg...

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PUM

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Abstract

The invention relates to a lens and a method of coating a light absorbing coating on the same, and an image lens. The lens comprises an optically effective portion, an inner non-positioning portion, an inner positioning portion, an outer non-positioning portion, and an outer end surface. The inner non-positioning portion encircling the optically effective portion is connected with the optically effective portion. The inner positioning portion encircling the inner non-positioning portion is connected with the inner non-positioning portion; the outer non-positioning portion encircling the innerpositioning portion is connected with the inner positioning portion. The outer end surface is provided with a cutting notch structure that is formed by a light shielding surface cutting the outer endsurface longitudinally and first transition surfaces that cut the outer end surface longitudinally and are arranged at the two sides of the light shielding surface; and the light shielding surface iscoated with a light absorbing coating. According to the invention, the stray light at the cutting notch can be suppressed effectively.

Description

technical field [0001] The invention relates to the technical field of making lenses and lenses, in particular to a lens, a method for coating a light-absorbing coating on it, and an image lens including the lens. Background technique [0002] The lens contains multiple aspheric lenses. In order to obtain extremely high imaging quality, the cutout shape of some aspheric lenses will be very limited. Especially for micro-lens lenses, the notch size is extremely small and irregular. Due to the limitations of the cutting process, there is a high probability of notch stray light after the cut lens is assembled. [0003] When the above-mentioned lenses are assembled into a lens, stray light will appear, making the optical performance of the lens poor, and the imaging quality and effect will be greatly reduced. Contents of the invention [0004] The object of the present invention is to provide a lens capable of effectively suppressing notch stray light, a method for coating th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/10G02B3/00G02B13/00
Inventor 陈培军叶小伟沈科良谢桂华
Owner ZHEJIANG SUNNY OPTICAL CO LTD