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Ultrathin color imaging lens assembly

A color imaging and imaging lens technology, applied in the field of optical components, can solve the problems of high processing cost and complex lens module structure.

Pending Publication Date: 2022-06-28
昆山暨扬光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In some macro applications such as mobile phone lenses, traditional single-lens refracting lens modules cannot adapt to increasingly thinner application scenarios by further compressing the volume, and the structure of traditional lens modules is complex, requiring a combination of multiple lenses to improve imaging quality , high processing cost
[0003] The traditional refractive lens module cannot adapt to the increasingly thinner application scenarios by further compressing the volume, and the structure of the traditional lens module is complex, requiring a combination of multiple lenses to improve the imaging quality, and the processing cost is high

Method used

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  • Ultrathin color imaging lens assembly
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  • Ultrathin color imaging lens assembly

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Experimental program
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preparation example Construction

[0056] On the other hand, the present invention also discloses a method for preparing the color imaging lens array 2, comprising the following steps:

[0057] Divide the orientations of liquid crystal molecules of the sub-imaging lenses of the pre-prepared color imaging lens array 2 into blocks according to different regions;

[0058] place the substrate;

[0059] Spin-coat the photo-alignment agent on the substrate, and arrange and orient according to the design block;

[0060] Spin-coating cholesteric liquid crystal polymer doped with right-handed molecules, the thickness satisfies Δnd=λ / 2, where Δn is the birefringence difference of the liquid crystal material, d is the thickness of the liquid crystal material, and λ is the working wavelength, which can be a typical green light wavelength , light-curing outside the sensitive band of the photo-alignment agent;

[0061] Coat the cholesteric liquid crystal polymer doped with left-handed molecules on the first layer of liquid...

Embodiment 1

[0076] A color imaging lens assembly with a size of 3*3mm and a focal length of 2mm at a wavelength of 550nm is prepared by using the grayscale lithography method to prepare a color imaging lens array 2. The sub-imaging lens is a diffractive lens. Take 3*3 sub-imaging lenses as an example , the aperture of a single sub-imaging lens is 1mm, and the unified design focal length for 550nm green light wavelength is 2mm. Filter 1 uses three primary colors of red, green and blue, and each filter area of ​​filter 1 and the color imaging lens array 2 are arranged equally. by figure 1 If the focal length of the diffraction imaging sub-imaging lens is 1.67mm for the wavelength of 660 nm of red light, the focal length of the diffraction imaging sub-imaging lens is 2.44 mm for the wavelength of blue light of 450 nm. By setting different monochromatic imaging sub-imaging according to the focal length relationship The distance between the lens and the image receiving device 3 is adjusted so ...

Embodiment 2

[0078]A color imaging lens assembly with a size of 3*3mm and a focal length of 2mm at a wavelength of 550nm is prepared by using the grayscale lithography method to prepare a color imaging lens array 2. The sub-imaging lens is a diffractive lens. Take 3*3 sub-imaging lenses as an example , the aperture of a single sub-imaging lens is 1mm, and the unified design focal length for 550nm green light wavelength is 2mm. Filter 1 uses three primary colors of red, green and blue, and each filter area of ​​filter 1 and the color imaging lens array 2 are arranged equally. by figure 1 If the focal length of the diffraction imaging sub-lens is 1.67 mm for the wavelength of 660 nm of red light, and the focal length of the sub-imaging lens of diffraction imaging is 2.44 mm for the wavelength of 450 nm of blue light, the image receiving device 3 can move along the optical axis, respectively. Images are collected at the imaging focal plane of 660nm wavelength, 550nm wavelength and 450nm wavel...

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Abstract

The invention discloses an ultrathin color imaging lens assembly, which comprises a color imaging lens array, an optical filter and an image receiving device, and is characterized in that the color imaging lens array comprises a plurality of sub-imaging lenses which are distributed in an array and have consistent parameters, and each filtering area of the optical filter is in one-to-one correspondence with each sub-imaging lens; the sub-imaging lenses corresponding to the light with different wavelengths are distributed in the height direction of the sub-imaging lenses, and the focal length is compensated; or, the system comprises a color imaging lens array and an image receiving device with a filtering function, the color imaging lens array comprises a plurality of sub-imaging lenses which are distributed in an array and have consistent parameters, the image receiving device can move along the optical axis, and all the sub-imaging lenses are located on the same plane. The image receiving device moves to imaging positions corresponding to the sub-imaging lenses under the light with different wavelengths to compensate the focal length; and each sub-imaging lens is a broadband imaging lens. Integrated color imaging is realized by adopting the color imaging lens array, and the imaging quality is good.

Description

technical field [0001] The invention belongs to the field of optical elements, in particular to an ultra-thin color imaging lens assembly. Background technique [0002] In some macro application fields such as mobile phone lenses, traditional single-lens refractive lens modules cannot adapt to increasingly thin and light application scenarios by further compressing the volume, and traditional lens modules have complex structures, requiring a combination of multiple lenses to improve imaging quality. , the processing cost is high. [0003] The traditional refractive lens module cannot adapt to the increasingly thin and light application scenarios by further compressing the volume, and the traditional lens module has a complex structure, requiring a combination of multiple lenses to improve the imaging quality, and the processing cost is high. SUMMARY OF THE INVENTION [0004] In order to solve the above technical problems, the present invention proposes an ultra-thin color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B3/00H04N9/04H04N9/07H04N5/225H04N23/12
CPCG02B13/0015G02B13/0055G02B3/0037H04N23/54H04N23/55H04N25/11H04N23/12
Inventor 刘泉王蓓李文杰
Owner 昆山暨扬光电科技有限公司