CN103336359A - Fresnel lens system with overlapped focuses - Google Patents
Fresnel lens system with overlapped focuses Download PDFInfo
- Publication number
- CN103336359A CN103336359A CN 201310228639 CN201310228639A CN103336359A CN 103336359 A CN103336359 A CN 103336359A CN 201310228639 CN201310228639 CN 201310228639 CN 201310228639 A CN201310228639 A CN 201310228639A CN 103336359 A CN103336359 A CN 103336359A
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- China
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- focus
- fresnel lens
- fresnel lenses
- concave mirror
- condensation
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- Optical Elements Other Than Lenses (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a Fresnel lens system with overlapped focuses, which is capable of adjusting and changing the focus positions of a Fresnel lens after condensation, so as to enable two or more focal spots to be coincided or superposed, the light intensity of the superposed region to be doubled, and the requirement of Fresnel lens condensation and high light intensity in engineering practice to be satisfied accordingly. A concave mirror is arranged behind each Fresnel lens and the focus thereof, the reflection and condensation of the concave mirror change the light ray direction of the Fresnel lens after condensation, so as to enable the light ray passing through the condensation focus of the Fresnel lens to be condensated in another focus. The change of the position and angle of the concave mirror causes corresponding change of the position of the focus, the adjusting of the focus position is capable of enabling two or more focal spots to be superposed, and the position of the superposed spots to be adjusted correspondingly. The Fresnel lens system provided by the invention effectively solves the problems that the conventional Fresnel lens focus is constant and the light intensity of the focus is insufficient, which cause inconvenience to certain application occasions and even cause low efficiency or waste, or certain engineering practice can not be satisfied, so as to affect effective exploitation and sufficient utilization of solar energy.
Description
Technical field
The present invention relates to the Fresnel Lenses system that a kind of focus can be overlapping, formed by two or more Fresnel Lenses and concave mirror, can change the focal position behind each Fresnel Lenses optically focused, two or more focus spot are overlapped or stack, thereby the light intensity of overlap-add region is doubled, use Fresnel Lenses optically focused and to the requirement of high light intensity to satisfy in the engineering practice.
Background technology
Fresnel Lenses is widely used in photovoltaic, the photo-thermal system, yet the focus of existing Fresnel Lenses is changeless, perhaps the focus light intensity is limited, this makes troubles for some application scenario even causes inefficiency or waste, can not satisfy the requirement of some engineering practice, influence effective exploitation of sun power and take full advantage of.Develop Fresnel Lenses system that a kind of focus of variable-focus can be overlapping 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, the focus light intensity is limited, make troubles for some application scenario even cause inefficiency or waste, can not satisfy the requirement of some engineering practice, influence is to effective exploitation of sun power and the problem that takes full advantage of.
The present invention relates to the Fresnel Lenses system that a kind of focus of variable-focus can be overlapping,
Can change the focal position behind the Fresnel Lenses optically focused, two or more focus spot be overlapped or stack, thereby the light intensity of overlap-add region is doubled, use Fresnel Lenses optically focused in the engineering practice and to the requirement of high light intensity to satisfy.
After Fresnel Lenses and focus thereof, concave mirror is set, because reflection and the optically focused of concave 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 concave mirror, the focal position is corresponding change also, two or more focus spot is overlapped or stack, thereby the light intensity of overlap-add region is doubled, 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, two or more focus spot are overlapped or stack, thereby the light intensity of overlap-add region is doubled, to satisfy the various needs of different occasion focusing light intensity, effectively improve the development and utilization effect to sun power.
Description of drawings
Accompanying drawing is the Fresnel Lenses system schematic that focus can be overlapping, only illustrates the bifocus overlapping system among the figure.
Embodiment
Embodiment one:
Focus of the present invention can be overlapping the Fresnel Lenses system, comprise first Fresnel Lenses, 1, the first normal, 2, the first focuses 3, the Fresnel Lenses system that this focus can be overlapping also comprises first concave mirror, 5, the first main shafts, 4, the second focuses 6; After directional light is by first Fresnel Lenses, 1 top vertical incidence, because reflection and the optically focused of first concave mirror 5 make to focus on second focus 6 again by the light through first focus 3 behind first Fresnel Lenses, 1 optically focused.
Angle between first main shaft 4 of first concave mirror 5 and first normal 2 of first Fresnel Lenses 1 is more big, and just more also the position with second focus 6 is relevant away from the curvature of first focus, 3, the first concave mirrors 5 for second focus 6.
Embodiment two:
Focus of the present invention can be overlapping the Fresnel Lenses system, also comprise second Fresnel Lenses, 12, the second normals, 11, the second concave mirrors, 8, the second main shafts, 9, the three focuses, 10, the four focuses 7; After directional light is by second Fresnel Lenses, 12 top vertical incidence, because reflection and the optically focused of second concave mirror 8 make to focus on the 4th focus 7 again by the light through the 3rd focus 10 behind second Fresnel Lenses, 12 optically focused.
Angle between second main shaft 9 of second concave mirror 8 and second normal 11 of second Fresnel Lenses 12 is more big, and just more also the position with the 4th focus 7 is relevant away from the curvature of the 3rd focus 10, the second concave mirrors 8 for the 4th focus 7.
Embodiment three:
Focus of the present invention can be overlapping the Fresnel Lenses system in, by regulating first concave mirror 5 and second concave mirror 8, can make second focus 6 approach or overlap with the 4th focus 7, thereby make this zone light intensity increase.
The Fresnel Lenses system of focus of the present invention stack adopts the focal position after the simple and cheap concave mirror of cost has changed Fresnel Lenses optically focused, two or more focus spot are overlapped or stack, thereby the light intensity of overlap-add region is doubled, to satisfy the various needs of different occasion focusing light intensity, effectively improve the development and utilization effect to sun power, expand application space and the scope of sun power.
Claims (3)
1. the Fresnel Lenses system that a focus can be overlapping comprises first Fresnel Lenses (1), first normal (2), first focus (3), it is characterized in that the Fresnel Lenses system that this focus can be overlapping also comprises first concave mirror (5), first main shaft (4), second focus (6); After directional light is by first Fresnel Lenses (1) top vertical incidence, because reflection and the optically focused of first concave mirror (5) make to focus on second focus (6) again by the light through first focus (3) behind first Fresnel Lenses (1) optically focused.
2. the Fresnel Lenses system that focus according to claim 1 can be overlapping is characterized in that it also comprises second Fresnel Lenses (12), second normal (11), second concave mirror (8), second main shaft (9), the 3rd focus (10), the 4th focus (7); After directional light is by second Fresnel Lenses (12) top vertical incidence, because reflection and the optically focused of second concave mirror (8) make to focus on the 4th focus (7) again by the light through the 3rd focus (10) behind second Fresnel Lenses (12) optically focused.
3. the Fresnel Lenses system that focus according to claim 1 can be overlapping, it is characterized in that by regulating first concave mirror (5) and second concave mirror (8), can make second focus (6) approach or overlap with the 4th focus (7), thereby this zone light intensity is increased.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310228639 CN103336359A (en) | 2013-06-09 | 2013-06-09 | Fresnel lens system with overlapped focuses |
| CN201420181712.3U CN203870322U (en) | 2013-06-09 | 2014-04-15 | Fresnel lens system enabling focus to overlap |
| CN201410150154.9A CN103885164A (en) | 2013-06-09 | 2014-04-15 | Focus overlapping Fresnel lens system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310228639 CN103336359A (en) | 2013-06-09 | 2013-06-09 | Fresnel lens system with overlapped focuses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103336359A true CN103336359A (en) | 2013-10-02 |
Family
ID=49244559
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310228639 Pending CN103336359A (en) | 2013-06-09 | 2013-06-09 | Fresnel lens system with overlapped focuses |
| CN201420181712.3U Expired - Fee Related CN203870322U (en) | 2013-06-09 | 2014-04-15 | Fresnel lens system enabling focus to overlap |
| CN201410150154.9A Pending CN103885164A (en) | 2013-06-09 | 2014-04-15 | Focus overlapping Fresnel lens system |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181712.3U Expired - Fee Related CN203870322U (en) | 2013-06-09 | 2014-04-15 | Fresnel lens system enabling focus to overlap |
| CN201410150154.9A Pending CN103885164A (en) | 2013-06-09 | 2014-04-15 | Focus overlapping Fresnel lens system |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN103336359A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336359A (en) * | 2013-06-09 | 2013-10-02 | 盖志武 | Fresnel lens system with overlapped focuses |
| CN112379470B (en) * | 2020-11-09 | 2022-10-28 | 荆门麦隆珂机器人科技有限公司 | Sliding shielding type variable focal length linear Fresnel lens robot |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10149427A (en) * | 1996-11-20 | 1998-06-02 | Brother Ind Ltd | Cortical scanning device, optical information reader and optical information recording device |
| DE102004013962A1 (en) * | 2003-12-22 | 2005-07-21 | Schott Ag | Fresnel lens spotlight for pocket lamp, has diffusing screen placed in center of fresnel lens to produce scattered light ratio and aperture angle of light to provide mixing ratio of light relative to another light imaged by lens |
| CN2913955Y (en) * | 2006-06-29 | 2007-06-20 | 中国科学技术大学 | Heat self-dissipating solar energy accumulation type photovoltaic electricity generating system |
| US20080305828A1 (en) * | 2007-06-06 | 2008-12-11 | Ching Sheng Chang | Dual-focus lens and electronic device having the same |
| CN102071777A (en) * | 2009-11-19 | 2011-05-25 | 管理 | Convex lens tiles for paving on total heat-gathering roof of solar thermal power station in embedding manner |
| CN201881060U (en) * | 2010-10-25 | 2011-06-29 | 北京印刷学院 | Rotating paraboloid light-focusing sunlight focusing cutter |
| CN101974764B (en) * | 2010-10-26 | 2012-03-21 | 江苏大学 | Solar thermophotovoltaic hydrogen generating device |
| CN202735580U (en) * | 2012-06-28 | 2013-02-13 | 许伟洪 | Two-time condenser |
| CN103336359A (en) * | 2013-06-09 | 2013-10-02 | 盖志武 | Fresnel lens system with overlapped focuses |
-
2013
- 2013-06-09 CN CN 201310228639 patent/CN103336359A/en active Pending
-
2014
- 2014-04-15 CN CN201420181712.3U patent/CN203870322U/en not_active Expired - Fee Related
- 2014-04-15 CN CN201410150154.9A patent/CN103885164A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN103885164A (en) | 2014-06-25 |
| CN203870322U (en) | 2014-10-08 |
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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: 20131002 |