CN103293652A - Fresnel lens system with focus position variable - Google Patents
Fresnel lens system with focus position variable Download PDFInfo
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- CN103293652A CN103293652A CN 201310227440 CN201310227440A CN103293652A CN 103293652 A CN103293652 A CN 103293652A CN 201310227440 CN201310227440 CN 201310227440 CN 201310227440 A CN201310227440 A CN 201310227440A CN 103293652 A CN103293652 A CN 103293652A
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- fresnel lenses
- fresnel lens
- convex mirror
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Abstract
A Fresnel lens system with a focus position variable can effectively change the focus position of a Fresnel lens after light gathering, so that the Fresnel lens is utilized to gather light in engineering and various requirements for the focus position are met. A convex mirror is arranged between the Fresnel lens and a focus of the Fresnel lens. Due to reflection of the convex mirror, a light direction is changed after light is gathered through the Fresnel lens, and the focus position of the Fresnel lens is changed after light gathering. By changing the position and the angle of the convex mirror, the focus position is also changed correspondingly, and the engineering requirements on different occasions can be met. The Fresnel lens system solves the problem that a focus of an existing Fresnel lens is fixed so that inconvenience is caused to certain application ocassions, inefficiency or waste is even caused, and effective development and full utilization of solar energy are influenced.
Description
Technical field
The present invention relates to the variable Fresnel Lenses system in a kind of focal position, can change the focal position behind the Fresnel Lenses optically focused, to satisfy the requirement of using Fresnel Lenses optically focused and focusing position in the engineering.
Background technology
Fresnel Lenses is widely used in photovoltaic, the photo-thermal system, yet the focus of existing Fresnel Lenses is changeless, this makes troubles for some application scenario even causes inefficiency or waste, has influenced effective exploitation of sun power and takes full advantage of.Develop the variable Fresnel Lenses system in a kind of focal position to solve this type of problem for this reason.
Summary of the invention
The objective of the invention is to immobilize for the focus that solves existing existing Fresnel Lenses, make troubles for some application scenario even cause inefficiency or waste, influence is to effective exploitation of sun power and the problem that takes full advantage of.
The present invention relates to the variable Fresnel Lenses system in a kind of focal position, can change the focal position behind the Fresnel Lenses optically focused, to satisfy the requirement of using Fresnel Lenses optically focused and focusing position in the engineering.
Between Fresnel Lenses and its focus, convex mirror is set, because the reflection of convex mirror, changed the radiation direction behind the Fresnel Lenses optically focused, focal position behind the Fresnel Lenses optically focused is changed, change position and the angle of convex mirror, the focal position is corresponding change also, to satisfy the requirement of engineering of different occasions.
The invention has the beneficial effects as follows:
Can change or regulate the focal position behind the Fresnel Lenses optically focused, to satisfy the various requirement that uses Fresnel Lenses optically focused and focusing position in the engineering, effectively improve the development and utilization effect to sun power.
Description of drawings
Fig. 1 represents first kind of embodiment of the present invention, the synoptic diagram that the convex mirror main shaft overlaps with normal.
Fig. 2 represents second kind of embodiment of the present invention, and convex mirror main shaft and normal acutangulate or the synoptic diagram at obtuse angle.
Embodiment
Embodiment one:
As shown in Figure 1, the Fresnel Lenses system that focal position of the present invention is variable comprises Fresnel Lenses 1, former focus 3, and the variable Fresnel Lenses system in this focal position also comprises convex mirror 2, normal 4, main shaft 5, the focus 6 after the transfer on the normal; The main shaft 5 of convex mirror 2 overlaps with the normal 4 of Fresnel Lenses 1, the direction that is parallel to normal 4 when the directional light edge, after Fresnel Lenses 1 top vertical incidence, because the reflection of convex mirror 2, make that the focus 6 after the transfer on the normal is away from the former focus 3 of Fresnel Lenses 1 by the focus 6 after the transfer of the light focusing behind Fresnel Lenses 1 optically focused to the normal.
Embodiment two:
As shown in Figure 1, in the variable Fresnel Lenses system in focal position of the present invention, when the main shaft 5 of convex mirror 2 overlaps with normal 4, when convex mirror 2 slided along normal 4, the focus 6 after the transfer on the normal was also slided at normal 4.
Embodiment three:
As shown in Figure 2, the focus 7 after the variable Fresnel Lenses system in focal position of the present invention also comprises the transfer of off-normal.The main shaft 5 of convex mirror 2 acutangulates with normal 4 or during the obtuse angle, because the reflection of convex mirror 2, makes focus behind Fresnel Lenses 1 optically focused be become the focus 7 after the transfer of off-normal by former focus 3.
Focus 7 off-normal 4 after the transfer of off-normal, concrete side-play amount is relevant with position and the angle of convex mirror 2.
Claims (3)
1. Fresnel Lenses system that the focal position is variable, comprise Fresnel Lenses (1), former focus (3) is characterized in that the variable Fresnel Lenses system in this focal position also comprises convex mirror (2), normal (4), main shaft (5), the focus after the transfer on the normal (6); The main shaft (5) of convex mirror (2) overlaps with the normal (4) of Fresnel Lenses (1), the direction that is parallel to normal (4) when the directional light edge, after the vertical incidence of Fresnel Lenses (1) top, because the reflection of convex mirror (2), make that the focus after the transfer on the normal (6) is away from the former focus (3) of Fresnel Lenses (1) by the focus (6) after the transfer of the light focusing behind Fresnel Lenses (1) optically focused to the normal.
2. the variable Fresnel Lenses system in focal position according to claim 1, it is characterized in that overlapping with normal (4) when the main shaft (5) of convex mirror (2), when convex mirror (2) slided along normal (4), the focus after the transfer on the normal (6) was also slided at normal (4).
3. the variable Fresnel Lenses system in focal position according to claim 1 is characterized in that the focus (7) after this system also comprises the transfer of off-normal; The main shaft (5) of convex mirror (2) and normal (4) acutangulate or during the obtuse angle, because the reflection of convex mirror (2), make focus behind Fresnel Lenses (1) optically focused be become the focus (7) after the transfer of off-normal by former focus (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310227440 CN103293652A (en) | 2013-06-09 | 2013-06-09 | Fresnel lens system with focus position variable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310227440 CN103293652A (en) | 2013-06-09 | 2013-06-09 | Fresnel lens system with focus position variable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103293652A true CN103293652A (en) | 2013-09-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310227440 Pending CN103293652A (en) | 2013-06-09 | 2013-06-09 | Fresnel lens system with focus position variable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103293652A (en) |
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2013
- 2013-06-09 CN CN 201310227440 patent/CN103293652A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130911 |