CN102141676B - Total reflection-based inverse stair solar condensing body - Google Patents
Total reflection-based inverse stair solar condensing body Download PDFInfo
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- CN102141676B CN102141676B CN 201110091497 CN201110091497A CN102141676B CN 102141676 B CN102141676 B CN 102141676B CN 201110091497 CN201110091497 CN 201110091497 CN 201110091497 A CN201110091497 A CN 201110091497A CN 102141676 B CN102141676 B CN 102141676B
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- total reflection
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- condensing body
- stair shape
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Abstract
The invention discloses a total reflection-based inverse stair solar condensing body, which comprises an inverse stair directing lower plane made of optically denser medium. The step angle is a right angle, and the included angle alpha of the upper plane and the horizontal plane is a critical angle when the optically denser medium and an optically thinner medium (surrounding atmosphere) produce total reflection. The solar condensing body manufactured according to the principle is made of only one optical material so as to effectively solve the technical problems of short life of a condenser because a reflecting film on the back of the glass is easy to drop, condensing efficiency decline because the reflecting film absorbs light and the like; and the plane is used as the upper surface of receiving sunlight so that the self-cleaning performance of the condensing body is improved. The sunlight is vertically incident to the receiving inclined plane under the drive of a high-precision automatic tracking system, and the shape of the condenser can be changed according to the actual requirement to directly realize line or spot condensation.
Description
Technical field
The present invention relates to directional light optically focused field, be specifically related to a kind of Salar light-gathering of falling stair shape body based on total reflection.
Technical background
One of obstacle that sun power is applied is exactly energy density too low (1 kilowatt/square metre), and effectively improves sun power density by the optically focused mode, is one of its approach.And in application, all having concrete practical problems for reflective and two kinds of basic concentrating methods of transmission-type: the most frequently used in the reflection-type beam condenser is to utilize the glass material back side to apply the reflection horizon method to realize Salar light-gathering, and this beam condensing unit exists the problem that reflectance coating comes off under outdoor rugged surroundings; More be to adopt Fenier lens to realize that as condensing body sunshine converges in the transmission-type condenser, directly exist self-cleaning property difference and technical matters such as easily aging but this device is another, thereby directly have influence on application.
Patent of invention " based on the directrix plane lateral type Salar light-gathering body of total reflection " is though only need a kind of material of glass just can realize Salar light-gathering under the total reflection situation by condensing body, efficiently solve at present and cause short problem of condenser life-span because reflectance coating comes off, the light gathering efficiency decline problem of also having avoided reflectance coating that light absorption is brought, and can change the condenser shape according to actual needs, directly realize line or some optically focused, but still exist following problem at actual processing and fabricating with in using: because the optics of the last directrix plane that the zigzag inclined-plane is formed is processed the self-cleaning property difference problem that makes that cost rises and unsmooth property is brought, and glass material for total reflection after attenuation during the passing through of sunshine also can not ignore, as when in glass, propagate 1 meter apart from the time sunshine is powerful is reduced to original 36.2% approximately.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, a kind of Salar light-gathering of falling stair shape body based on total reflection of sunshine being derived from the condensing body side according to total reflection principle is provided.Efficiently solve optics precessing saw dentation inclined-plane and constitute the self-cleaning property difference problem that directrix plane makes cost rise and the unflatness structure brings; And the lower horizontal plane that constitutes plane of refraction is processed into several steps of falling the stair shape as required, in the attenuation losses of sunshine in glass material, also reduced the thickness and the weight of condensing body after reducing total reflection.
For achieving the above object, the technical solution used in the present invention is: comprise that directrix plane and last plane constitute under the stair shape by falling of making of optically denser medium, the angle of the step of falling the stair shape of directrix plane is the right angle under the described formation, the critical angle when the angle α of last plane and surface level is optically denser medium and optically thinner medium generation total reflection.
Described optically denser medium is made by glass material, and optically thinner medium is the physical environment atmosphere.
The described step of falling the stair shape realizes the line optically focused of sun power during for rectangular configuration.
The described step of falling the stair shape is an isosceles trapezoid, and its two waist is realized the some optically focused of sun power when being critical angle α with following angle.
The present invention is different from the front that photoreceptor in the reflection concentration type is in condensing body, also be different from the back that photoreceptor in the transmission-type optically focused is in condensing body, but photoreceptor is in the side of condensing body.By the condensing body of falling the stair shape, guarantee that in High Precision Automatic tracker its sensitive surface is vertically under the condition of sunshine, utilize the directional light total reflection phenomenon, after the sunshine of not only effectively having realized converging is poly-from the side with the target of the mode outgoing of line or point, and compare with patent of invention, above the condensing body reception sunshine is a plane, efficiently solves optics precessing saw dentation inclined-plane and constitutes the self-cleaning property difference problem that directrix plane makes cost rise and the unflatness structure brings; The lower horizontal plane that constitutes plane of refraction in addition is processed into several square of falling stair shape steps as required, after reducing total reflection in the attenuation losses of sunshine in glass material, also reduce the thickness and the weight of condensing body, and reduced the difficulty of processing of condensing body own.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention;
The vertical view of condenser when Fig. 2 is line optically focused;
The vertical view of condenser when Fig. 3 is some optically focused;
Fig. 4 is the exit point optically focused light path synoptic diagram that is all-trans.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1, the present invention includes the condensing body of making by white glass of falling the stair shape 1, plane 3 (sensitive surface) and surface level 4 (fully reflecting surface) angle are the lower plane of the white glass 1 material critical angle α during with the generation total reflection of physical environment atmosphere 2 interfaces on it, and form the step of stair shape is the right angle, and what of step number require and to reduce the weight of condensing body own relevant in the decay of optically denser medium with processing cost, sunshine.Condensing body 1 is under the driving of High Precision Automatic tracker, and the assurance sunshine is vertically injected light plane 3 and entered condensing body; Condensing body adopts white glass, and its refractive index is 1.8, and the refractive index of air is 1, so its corresponding critical angle α=33.7
0,Again because the critical angle that to receive plane and horizontal plane angle be sunshine when glass condensing body (optically denser medium) shines air (optically thinner medium), so at this time total reflection phenomenon will take place, all incident ray A, B, C, D will accumulate E, from the side outgoing of condenser, thereby reach the target that sunshine converges.
Referring to Fig. 2, when photoreceptor was linear, its condenser plane was respectively rectangle or trapezoidal, and the width of its rectangle and length have determined the length and the intensity of linear optically focused respectively.
Referring to Fig. 3, when photoreceptor was circular point shape, its condenser plane was an isosceles trapezoid, and its two waist is critical angle α with the angle of bottom, and optically focused intensity is then relevant with end length with trapezoidal length.Referring to Fig. 4, during parallel sunshine advances process according to the total reflection theorem from left to right along the condensing body bottom surface, the total reflection of formation at the interface that constitutes at two waists of isosceles trapezoid again, thereafter move on along these two interfaces, among the upper bottom surface of isosceles trapezoid, penetrate at last with waiting central plane parallel direction.So the photoreceptor in the some optically focused should be as far as possible near the upper bottom surface of isosceles trapezoid, otherwise can be because converge divergence of beam along with causing apart from increase with upper bottom surface, thus cause the reduction of optically focused intensity.
Claims (4)
1. the Salar light-gathering of falling stair shape body based on total reflection, it is characterized in that: comprise the condensing body of making by optically denser medium (1) material, described condensing body is made of the surface level of falling the stair shape (4) and last plane (3), the angle of the step of falling the stair shape of described formation surface level (4) is the right angle, the angle of plane on it (3) and surface level (4) is the critical angle α of the surface level (4) of condensing body when with optically thinner medium (2) interface total reflection taking place, sunshine is vertically injected plane (3) and total reflection phenomenon will be taken place when entering condensing body, all incident ray (A, B, C, D) all will accumulate the emergent ray (E) of level, from the side outgoing of condenser, thereby reach the target that sunshine converges; Described optically thinner medium (2) is the physical environment atmosphere.
2. the Salar light-gathering of falling the stair shape body based on total reflection according to claim 1 is characterized in that: described optically denser medium (1) is made by glass material.
3. the Salar light-gathering of falling the stair shape body based on total reflection according to claim 1 is characterized in that: the step of falling the stair shape of described surface level (4) is a rectangular configuration, realizes the line optically focused of sun power.
4. the Salar light-gathering of falling the stair shape body based on total reflection according to claim 1 is characterized in that: the step of falling the stair shape of described surface level (4) is an isosceles trapezoid, and its two waist is critical angle α with following angle, realizes the some optically focused of sun power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110091497 CN102141676B (en) | 2011-04-12 | 2011-04-12 | Total reflection-based inverse stair solar condensing body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110091497 CN102141676B (en) | 2011-04-12 | 2011-04-12 | Total reflection-based inverse stair solar condensing body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102141676A CN102141676A (en) | 2011-08-03 |
| CN102141676B true CN102141676B (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110091497 Expired - Fee Related CN102141676B (en) | 2011-04-12 | 2011-04-12 | Total reflection-based inverse stair solar condensing body |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201029095Y (en) * | 2007-02-08 | 2008-02-27 | 张如琨 | Light-collecting type photovoltaic battery component |
| CN101266316A (en) * | 2008-03-07 | 2008-09-17 | 雷小兵 | Solar light gathering method and device, solar generating device possessing light gathering device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7593615B2 (en) * | 2006-02-10 | 2009-09-22 | Rpc Photonics, Inc. | Optical devices for guiding illumination |
| JP4639337B2 (en) * | 2006-02-17 | 2011-02-23 | 国立大学法人長岡技術科学大学 | Solar cell and solar collector |
| WO2010040053A1 (en) * | 2008-10-02 | 2010-04-08 | Richard Morris Knox | Solar energy concentrator |
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2011
- 2011-04-12 CN CN 201110091497 patent/CN102141676B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201029095Y (en) * | 2007-02-08 | 2008-02-27 | 张如琨 | Light-collecting type photovoltaic battery component |
| CN101266316A (en) * | 2008-03-07 | 2008-09-17 | 雷小兵 | Solar light gathering method and device, solar generating device possessing light gathering device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-218540A 2007.08.30 |
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| CN102141676A (en) | 2011-08-03 |
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Granted publication date: 20130724 Termination date: 20210412 |