Diffraction optical component and its production

A technology for diffractive optical elements and manufacturing methods, applied in optical elements, diffraction gratings, optics, etc., can solve the problems of inability to mass-produce, complex steps, and large deviation of diffractive structures, and achieve automated mass production, improve qualification rate, The effect of improving yield

Inactive Publication Date: 2006-11-01
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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Problems solved by technology

The disadvantage of this injection molding method is that the shrinkage of the plastic material itself makes the diffraction structure of the obtained lens deviate greatly from that of the mold, so the quality of the diffractive optical lens is difficult to guarantee
Another existing method for making a diffractive optical lens is to first coat a photoresist on a substrate, then set the required diffraction structure stripes on the photoresist, and then develop and fix the diffraction stripes. It is formed on the photoresist, then the diffraction stripes are etched on the substrate, and finally the photoresist is removed to make the diffractive optical element. This method is complicated and difficult to realize the automation of production, so it cannot be mass-produced

Method used

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  • Diffraction optical component and its production
  • Diffraction optical component and its production
  • Diffraction optical component and its production

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Embodiment Construction

[0019] The preferred embodiment of the present invention discloses a diffractive optical element, and at the same time, the present invention also discloses a preferred manufacturing method for the diffractive element.

[0020] see figure 1 , the diffractive optical element 10 of the present invention includes an aspheric lens 100 and a diffractive grating 102 . The aspheric lens 100 includes an aspheric surface 104 and a first bonding surface 106 opposite to the aspherical surface 104 . The diffraction grating 102 includes a second bonding surface 108 and a diffraction surface 105 . The diffraction grating 102 is pasted on the first bonding surface 106 of the aspheric lens 100 through an adhesive having the same refractive index as the aspheric lens 100 , and the diffractive surface 105 faces outward.

[0021] see figure 2 and image 3 , the first manufacturing method of the diffractive optical element 10 includes the following steps:

[0022] A mold is provided, the mo...

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Abstract

An optical diffraction element consists of a lens and a diffraction grating being stuck on said lens. Its preparing method including providing a lens with the first surface and a diffraction grating with the second surface and diffraction surface in opposite to the second surface, setting diffraction structure on said diffraction surface and sticking the first surface of lens on the second surface of diffraction grating to let diffraction surface with diffraction be set towards outside.

Description

【Technical field】 [0001] The invention relates to an optical element and a manufacturing method thereof, in particular to a diffractive optical element and a manufacturing method thereof. 【Background technique】 [0002] With the development of multimedia technology, digital products such as DVDs, digital cameras, digital projectors, video cameras, scanners, and fax machines are becoming more and more popular among consumers. The image quality of the object also puts forward higher requirements, that is, it is hoped that the image of the object to be shot is clear, and the image quality of the object depends to a large extent on the quality of each optical component in the digital product. [0003] Diffractive optical lenses can avoid the customary chromatic aberration problem of ordinary lenses, thereby greatly improving the imaging quality of the lens and making the picture effect of digital products better. At present, the more commonly used method is to use injection mol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/42G02B5/18
Inventor 李俊佑
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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