CN109839685A - A kind of efficient large scale short focus Fresnel lens - Google Patents
A kind of efficient large scale short focus Fresnel lens Download PDFInfo
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- CN109839685A CN109839685A CN201711199137.4A CN201711199137A CN109839685A CN 109839685 A CN109839685 A CN 109839685A CN 201711199137 A CN201711199137 A CN 201711199137A CN 109839685 A CN109839685 A CN 109839685A
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Abstract
The present invention relates to a kind of efficient large scale short focus Fresnel lens, including lens body, the lens body includes two refracting spheres, two be all-trans area and a centers；The center is arranged in the middle part of lens body；The refracting sphere is symmetrical arranged against center；The area of being all-trans is symmetricly set on lens body most both ends；The center is plano-convex lens；The refracting sphere is the annulus sawtooth using anaclasis principle；The area of being all-trans is the annulus sawtooth using total reflection principle；Fresnel Lenses of the invention has many advantages, such as that high concentration ratio, high light gathering efficiency, thickness is thin, handling ease while reducing burnt diameter ratio, while improving concentrating solar battery efficiency and reducing system cost.
Description
Technical field
The present invention relates to field of optical device technology more particularly to a kind of efficient large scale short focus Fresnel lenses.
Background technique
Fresnel Lenses is optical component important in Photospot solar system, has been widely used for concentration photovoltaic system
In, it is the hot spot that studies in the world according to optical principle, the Fresnel Lenses designed using traditional anaclasis principle, in focal length
One timing is remoter apart from lens centre, and sawtooth angle is bigger, and reflection loss is consequently increased large scale Fresnel Lenses to reduce
Reflection loss needs to increase focal length, and Photospot solar system overall dimensions is made to become larger, thus increase control difficulty and system at
This considers that the Fresnel mirror use of flat basal plane is typically designed method from Fresnel Lenses application angle, big in the burnt diameter ratio of lens
Just there is higher optical efficiency (85% or so) when 1.1, especially puts down outward-facing lens.It is directed to Large Aperture Lenses in this way,
Its focal length, system longitudinal size will increase with it, therefore it is luxuriant and rich with fragrance to design high optical efficiency, short focus, the large scale of high concentration ratio
Nie Er lens are of great significance.Although arc basal plane Fresnel lens is suitble to size larger and the lesser lens of focal length, processing
Difficulty is larger.
Summary of the invention
The purpose of the present invention is what is be achieved through the following technical solutions.
A kind of efficient large scale short focus Fresnel lens, including lens body, the lens body include two refractions
Area, two be all-trans area and a centers；The center is arranged in the middle part of lens body；The refracting sphere abuts center pair
Claim setting；The area of being all-trans is symmetricly set on lens body most both ends；The center is plano-convex lens；The refracting sphere is to answer
With the annulus sawtooth of light refraction principle；The area of being all-trans is the annulus sawtooth using total reflection principle.
Further, center lens diameter is 40mm, radius of curvature 100.450mm.
Further, the fixed tooth width of refracting sphere is 2mm.
Further, the fixed sawtooth height in area that is all-trans is 3mm.
The present invention has the advantages that the present invention devises efficient, short focus, high concentration ratio Fresnel using partition method
Large scale circle or rectangular Fresnel Lenses are divided into center, refracting sphere and area of being all-trans by lens.Wherein center is that plano-convex is saturating
Mirror；Refracting sphere is the annulus sawtooth using anaclasis principle；Area be all-trans for using the annulus sawtooth of total reflection principle.Of the invention
Fresnel Lenses has many advantages, such as that high concentration ratio, high light gathering efficiency, thickness is thin, handling ease while reducing burnt diameter ratio, together
When improve concentrating solar battery efficiency and reduce system cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Attached drawing 1 shows a kind of efficient large scale short focus Fresnel lens of embodiment according to the present invention.
Appended drawing reference: 1, refracting sphere；2, it is all-trans area；3, center；4, lens body.
Specific embodiment
In the following detailed description, many details are proposed, in order to complete understanding of the present invention.But
It will be apparent to those skilled in the art that the present invention can not need some details in these details
In the case of implement.Below to the description of embodiment just for the sake of provided by showing example of the invention to it is of the invention more
Understand well.
Below in conjunction with attached drawing, the technical solution of the embodiment of the present invention is described.
As shown in Figure 1, the present invention provides a kind of efficient large scale short focus Fresnel lens, including lens body 4, it is described
Lens body 4 includes two refracting sphere 1, two be all-trans area 2 and a center 3；The center 3 is arranged in lens body 4
Middle part；The refracting sphere 1 is symmetrical arranged against center 3；The area 2 of being all-trans is symmetricly set on the most both ends of lens body 4；It is described
Center 3 is plano-convex lens；The refracting sphere 1 is the annulus sawtooth using anaclasis principle；It is all-trans for application in the area 2 of being all-trans
Penetrate the annulus sawtooth of principle.
According to an aspect of the present invention, 3 lens diameter of center is 40mm, radius of curvature 100.450mm.
According to an aspect of the present invention, the fixed tooth width of refracting sphere 1 is 2mm.
According to an aspect of the present invention, the fixed sawtooth height in area 2 that is all-trans is 3mm.
The present invention devises efficient, short focus, high concentration ratio Fresnel Lenses using partition method, large scale circle
Or rectangular Fresnel Lenses is divided into center 3, refracting sphere 1 and area 2 of being all-trans.Wherein center 3 is plano-convex lens；Refracting sphere 1 is
Using the annulus sawtooth of anaclasis principle；Area 2 be all-trans for using the annulus sawtooth of total reflection principle.Fresnel Lenses of the invention
Have many advantages, such as that high concentration ratio, high light gathering efficiency, thickness is thin, handling ease while reducing burnt diameter ratio, while improving poly-
Light solar battery efficiency simultaneously reduces system cost.
The present invention is not limited to examples detailed above, in claims of the present invention limited range, art technology
The various deformations or amendments that personnel can make without creative work are protected by this patent.
Claims (4)
1. a kind of efficient large scale short focus Fresnel lens, including lens body, which is characterized in that the lens body includes
Two refracting spheres, two be all-trans area and a centers；The center is arranged in the middle part of lens body；The refracting sphere abuts
Center is symmetrical arranged；The area of being all-trans is symmetricly set on lens body most both ends；The center is plano-convex lens；The folding
Penetrating area is the annulus sawtooth using anaclasis principle；The area of being all-trans is the annulus sawtooth using total reflection principle.
2. a kind of efficient large scale short focus Fresnel lens according to claim 1, which is characterized in that the center
Lens diameter is 40mm, radius of curvature 100.450mm.
3. a kind of efficient large scale short focus Fresnel lens according to claim 1, which is characterized in that the refracting sphere
Fixed tooth width is 2mm.
4. a kind of efficient large scale short focus Fresnel lens according to claim 1, which is characterized in that the area of being all-trans
Fixed sawtooth height is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711199137.4A CN109839685A (en) | 2017-11-26 | 2017-11-26 | A kind of efficient large scale short focus Fresnel lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711199137.4A CN109839685A (en) | 2017-11-26 | 2017-11-26 | A kind of efficient large scale short focus Fresnel lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109839685A true CN109839685A (en) | 2019-06-04 |
Family
ID=66878755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711199137.4A Withdrawn CN109839685A (en) | 2017-11-26 | 2017-11-26 | A kind of efficient large scale short focus Fresnel lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109839685A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562634A (en) * | 2020-05-08 | 2020-08-21 | 大连工业大学 | Design method of partitioned uniform light illumination Fresnel lens based on Lambert type LED light source |
| CN112363346A (en) * | 2020-11-11 | 2021-02-12 | 深圳市华星光电半导体显示技术有限公司 | Display device |
-
2017
- 2017-11-26 CN CN201711199137.4A patent/CN109839685A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562634A (en) * | 2020-05-08 | 2020-08-21 | 大连工业大学 | Design method of partitioned uniform light illumination Fresnel lens based on Lambert type LED light source |
| CN111562634B (en) * | 2020-05-08 | 2021-11-19 | 大连工业大学 | Design method of partitioned uniform light illumination Fresnel lens based on Lambert type LED light source |
| CN112363346A (en) * | 2020-11-11 | 2021-02-12 | 深圳市华星光电半导体显示技术有限公司 | Display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190604 |