Unlock instant, AI-driven research and patent intelligence for your innovation.

A method of manufacturing a large-scale polarizing short-focus Fresnel lens

A technology of Fresnel lens and manufacturing method, which is applied in the direction of optical components, other household appliances, household appliances, etc., can solve the problems affecting the optical performance of the lens, the weak basic industry, and the inability to realize production, etc., and achieve the effect of good optical performance

Active Publication Date: 2016-05-11
CHENGDU FSCREEN SCI TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Super-large large-size Fresnel lenses are limited by the weak basic industry and cannot be produced. Some people use splicing methods, but the splicing seriously affects the optical performance of the lens, especially in the field of video display. The Fresnel used The lens pitch reaches 25μm, and there is no trace of splicing at all

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method of manufacturing a large-scale polarizing short-focus Fresnel lens
  • A method of manufacturing a large-scale polarizing short-focus Fresnel lens
  • A method of manufacturing a large-scale polarizing short-focus Fresnel lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] [embodiment 1]: a kind of manufacture method of large-scale polarizing short-focus Fresnel lens, it comprises the following steps:

[0025] S1: Apply UV light-curable glue, and coat a layer of UV light-curable glue with a thickness of 100 μm on the transparent plate;

[0026] S2: Roll forming, such as image 3 As shown, take the small end of the tapered roller as the center of the circle, and the height of the tapered roller as the radius, roll on the transparent plate coated with UV light-curable adhesive to obtain the concentric ring-shaped fine-toothed groove of the Fresnel lens structure;

[0027] S3: Place the formed Fresnel lens plate in an ultraviolet light environment to accelerate curing;

[0028] S4: Cut the Fresnel lens according to the design requirements to obtain the finished product.

[0029] like figure 1 and figure 2 As shown, the tapered roller includes a left fixed shaft 1, a roller body 2 and a right fixed shaft 3 fixedly connected in sequence,...

Embodiment 2

[0032] [embodiment 2]: a kind of manufacture method of large-scale polarizing short focal length Fresnel lens, it comprises the following steps:

[0033] S1: Apply UV light-curable glue, and coat a layer of UV light-curable glue with a thickness of 50 μm on the transparent plate;

[0034] S2: Roll forming, such as image 3 As shown, take the small end of the tapered roller as the center of the circle, and the height of the tapered roller as the radius, roll on the transparent plate coated with UV light-curable adhesive to obtain the concentric ring-shaped fine-toothed groove of the Fresnel lens structure;

[0035] S3: Place the formed Fresnel lens plate in an ultraviolet light environment to accelerate curing;

[0036] S4: Cut the Fresnel lens according to the design requirements to obtain the finished product.

[0037] like figure 1 and figure 2 As shown, the tapered roller includes a left fixed shaft 1, a roller body 2 and a right fixed shaft 3 fixedly connected in seq...

Embodiment 3

[0040] [embodiment 3]: a kind of manufacture method of large-scale polarizing short focal length Fresnel lens, it comprises the following steps:

[0041] S1: Apply UV light-curable glue, and coat a layer of UV light-curable glue with a thickness of 75 μm on the transparent plate;

[0042] S2: Roll forming, such as image 3 As shown, take the small end of the tapered roller as the center of the circle, and the height of the tapered roller as the radius, roll on the transparent plate coated with UV light-curable adhesive to obtain the concentric ring-shaped fine-toothed groove of the Fresnel lens structure;

[0043] S3: Place the formed Fresnel lens plate in an ultraviolet light environment to accelerate curing;

[0044] S4: Cut the Fresnel lens according to the design requirements to obtain the finished product.

[0045] like figure 1 and figure 2 As shown, the tapered roller includes a left fixed shaft 1, a roller body 2 and a right fixed shaft 3 fixedly connected in seq...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for making a large-size polarized short focal length Fresnel lens, which includes the following steps: S1: Apply UV curing glue, and apply a layer of UV curing glue with a thickness ranging from 50 to 100 μm on a transparent plate. ; S2: Roll forming, with the small end of the tapered roller as the center and the height of the tapered roller as the radius, roll the Fresnel lens embryo on a transparent plate coated with UV curable glue; S3: Place the formed Fresnel lens plate in an ultraviolet light environment to accelerate solidification; S4: Cut the Fresnel lens according to the design needs to obtain the finished product. The advantages of the present invention are: by using a tapered roller to roll on a transparent plate cured by UV light, the obtained Fresnel lens has an integral structure, no splicing traces, and good optical performance; the diameter of the Fresnel lens It is not limited by machine tools and can meet the large-size needs of projection screens and solar concentrators.

Description

technical field [0001] The invention relates to the technical field of lens manufacturing technology for projection screens and solar energy concentrating, in particular to a method for manufacturing a large-scale polarizing short-focus Fresnel lens. Background technique [0002] Fresnel lens (fvesnellens) is named after the inventor Fresnel legal person. It is composed of several concentric rings. Due to different application fields, it can gather light at the center of the circle, or it can be converged into a line (surface) Fresnel lens. And the focal length can be designed arbitrarily. [0003] Generally speaking, the rear projection screen is to project the image in the projector, pass through the display screen and enter the eyes of the audience. In the market, it is characterized by large size, high image quality and thinness, so it needs to be considered in the design The main function of the Fresnel lens is to collect the light with a large divergence angle cast by...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29D11/00
CPCB29D11/00269B29D11/0048
Inventor 张益民吴庆富
Owner CHENGDU FSCREEN SCI TECH