CN100495108C - Mirror image focus superposed direction-changeable parallel light energy flux density multiplier - Google Patents
Mirror image focus superposed direction-changeable parallel light energy flux density multiplier Download PDFInfo
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- CN100495108C CN100495108C CNB2007100630595A CN200710063059A CN100495108C CN 100495108 C CN100495108 C CN 100495108C CN B2007100630595 A CNB2007100630595 A CN B2007100630595A CN 200710063059 A CN200710063059 A CN 200710063059A CN 100495108 C CN100495108 C CN 100495108C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
This invention is the light energy stream density doubler and design method of mirror image focal point overlapping parallel energy, which style is changeable, it belongs to optics technology application domain, and especially the solar energy condenses the area of technology. This invention is combined of the combination paraboloid condenser, the column catopter and the paraboloid leading the glossy ware by the combination parabola circling the axis of symmetry revolving along the central shaftconnects in turn. Among them , combination paraboloid condenser is obtained like this: The parabola sharpening the edge of flat surface inner making progress translates along the horizontal direction to satisfy the specific condition the distance, after thetranslation parabola and the original parabola intercross, removes the parabola sections having point of inflection on both sides of intersection, obtains a conic combination parabola plane figure , circles its axis of symmetry to revolve then obtains a combination paraboloid. Then truncates its pinnacle part horizontally , and enables the section position to not be lower than the parabola focal point position, also the section width happens to half of focal distance between two parabolas .
Description
Affiliated technical field
The invention belongs to optical technology application, particularly Salar light-gathering, leaded light and solar energy utilization technique field.Also can be applicable to fields such as the convergence of radiowave and propagation.
Background technology
Realize the conversion or the logical light area size conversion of parallel beam energy flux density size, general method is to utilize lens or Fresenl mirror combination, but this lens-like manufacturing cost is higher, only be applicable to the situation of penlight, to the light beam of big logical light area, make corresponding lens still all is very difficult technically economically.The present invention utilizes the principle of reflection of parabolic concentrator and cylindrical lens reflecting surface to realize the conversion of parallel beam energy density or the logical light area size of parallel beam, is easy to realization, economically feasible technically, has a good application prospect.In addition, the common paraboloid of revolution is in the converging parallel light time, and its focus is in a side of reflecting surface, promptly parabolic recessed to the inboard, this can make troubles to application under a lot of situations.The present invention make the meeting focus point of directional light move on to the combination parabolic condenser recessed to the outside, like this some application is offered convenience.
Summary of the invention
Device provided by the invention can be converged to pointolite with the directional light of the low energy flux density of big light beam, perhaps the directional light of the low energy flux density of big light beam is converged to the directional light of penlight high-energy-density.And the directional light direction of outgoing can be regulated arbitrarily.
The technical solution adopted for the present invention to solve the technical problems is: utilize special array mode to make combination parabolic condenser (3), add the cylindrical lens reflecting surface (1) of coaxial connection, can form a beam condensing unit that directional light can be converged to a light.That overlap with this focal point by its focus again and top the part parabolic lightguide (7), a light can be extended to a branch of directional light again.
The method for designing of combination parabolic condenser (3) is: the para-curve along continuous straight runs translation certain distance that opening is made progress, para-curve after the translation intersects mutually with former para-curve, para-curve focus after the translation is identical with translation distance with the distance (18) of former para-curve focus, removing the intersection point both sides has two parabolic segments (13) and (16) of flex point, intersection point is the combined parabola planar graph of a taper with top, flatly clip its pinnacle part then, be phantom line segments (19) and (20), cutting cut position puts and must satisfy following two requirements simultaneously: the first, and the section position can not be lower than the parabolic focus position; The second, section width (17) just in time is half of two para-curve focal lengths (18), has only two parabolical relative translation distances, and promptly the distance between bifocal (18) could satisfy this two requirements after surpassing certain numerical value.The planar graph of being made up of two parabolic segments (14) and (15) with such method obtains can obtain axisymmetric translation combination parabolic condenser (3) around its symcenter axle (5) rotation.When directional light along the combination parabolic condenser (3) axis of symmetry (5) direction incident the time, after combination parabolic condenser (3) reflection, will focus on the focal line of a circle, the focal line of this circle is positioned at the section below, the center of circle is on axis of symmetry (5), and its radius just in time is the twice of section radius.
The diameter of cylindrical lens reflecting surface (1) equates that with the section width of combination parabolic condenser (3) it highly is equal to or slightly less than the distance of section to two a para-curve focus line of combination parabolic condenser (3).
The combination parabolic condenser (3) with coaxial connection of cylindrical lens reflecting surface (1) after, because the mirror image effect of cylindrical lens reflecting surface (1), the overlapping focus (2) that becomes of focal line mirror image that combination parabolic condenser (3) will be scattered, this focus (2) is positioned at combination parabolic condenser (3) section below, and on the axis of symmetry (5) of cylindrical lens reflecting surface (1).Because the position of focus (2) is positioned at the lower end of combination parabolic condenser (3), the light that converges in use can bring great convenience towards the below outgoing.
The focus and the mirror image focus (2) of parabolic lightguide (7) are overlapping.The requirement to the outgoing beam size is depended in the selection of the shape size of parabolic lightguide (7), and its opening is towards depending on requirement to the emergent light direction with the selection at amputation position.The common axis of symmetry of cylindrical lens reflecting surface (1) and translation combination parabolic condenser (3), be between the axis of symmetry of central shaft (5) and parabolic lightguide (7) 0 ° to 180 a ° angle to be arranged, and the light-emitting window direction of parabolic lightguide (7) can change arbitrarily between 0 ° to 360 ° around the axis of symmetry of parabolic lightguide (7).
More than device also can be designed to have only the structure of two-dimensional directional variation, at this moment make up the combination parabolic condenser that parabolic condenser (3) just becomes a flute profile, cylindrical lens reflecting surface (1) just becomes two parallel level crossings, parabolic lightguide (7) just becomes the parabolic lightguide of flute profile, and the overlapping focus (2) of mirror image has just become the overlapping focal line of mirror image.The cross section structure of its two-dimensional section structure and three-dimensional is identical.
In the practical application, apparatus of the present invention can form 1 to multistage system's use by the mode of serial or parallel connection, also can adopt traditional compound parabolic concentrator (CPC-compound parabolic concentrator) that the directional light from parabolic lightguide (7) outgoing is further converged, obtain more highdensity emergent light.
In order to save cost or to be subjected to the restriction of installing space, in actual applications, combination parabolic condenser (3) can be clipped the part, but with the not variation of relative position of cylindrical lens reflecting surface (1) and parabolic lightguide (7).
The invention has the beneficial effects as follows, the big parallel beam that hangs down energy flux density can be converged to the little parallel beam of high fluence density.Such as, in Salar light-gathering or leaded light application, just can obtain optically focused than very high sun light beam with apparatus of the present invention two-stage series connection, and light direction is adjustable arbitrarily, or directional light.It is indoor to add that by the present invention photoconductive tube can be transferred to the solar energy of open air easily, realizes green illumination or high temperature cumulative.In addition, because the focus of this light collecting device is not in the inboard of reflective concave surface, if it is applied in the technical fields such as reception of radio signal, its receiver just can be contained in the outside of reflective concave surface, receiver will can not produce shade on reflecting surface like this, increased the light harvesting area of reflecting surface, design, installation, debugging and the maintenance maintenance of this type of receiving trap are brought convenience.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1-schematic diagram of the present invention.Wherein: 1-cylindrical lens reflecting surface; 2-mirror image focus; 3-combination parabolic condenser; 4-incident ray; 5-central shaft; 6-maximum optically focused radius; 7-parabolic lightguide.
The schematic diagram of Fig. 2-light path operation of the present invention.Wherein: the virtual focus of 9-para-curve (14); The virtual focus of 10-para-curve (15); The pinnacle part that 11-parabolic lightguide is clipped; 8-incident ray.
The central shaft of Fig. 3-parabolic lightguide central shaft and device has the embodiment service chart of a little angle.Wherein: the angle of the central shaft (5) of 12-parabolic lightguide (7) central shaft and device.
The mutually perpendicular embodiment service chart of central shaft (5) of Fig. 4-parabolic lightguide (7) central shaft and device.
Fig. 5-remove embodiment service chart of parabolic lightguide (7).
Fig. 6-will make up the embodiment service chart that parabolic condenser (3) is clipped a part.Wherein: the part that 21-combination parabolic condenser is clipped.
The embodiment service chart of the parabolic lightguide (7) that Fig. 7-focal length of employing is littler.
The design concept figure of Fig. 8-combination parabolic condenser.Wherein: the part that 13-left side para-curve is clipped; The part that 14-the right para-curve is retained; The part that 15-left side para-curve is retained; The part that 16-the right para-curve is clipped; Section width when 17-combined parabola is clipped; Article 18-two, the distance between parabolic focus, two parabolical relative translation distances just, the left side on the 19-combined parabola pinnacle of being clipped, the right on the 20-combined parabola pinnacle of being clipped.
Embodiment
Fig. 1 is a schematic diagram of the present invention.In Fig. 1, the operation logic of device can be explained as follows step by step:
Parallel beam (4) is along central shaft (5) direction incident, light in maximum optically focused radius (6), major part will incide on the combination parabolic condenser (3), all can enter cylindrical lens reflecting surface (1) inside after reflection, incide on cylindrical lens reflecting surface (1) inwall, after the reflection of cylindrical lens reflecting surface (1) inwall, converge on the mirror image focus (2); Directly extend through the sunshine at its section place without combination parabolic condenser (3) reflection, part enters from the upper port of parabolic lightguide (7), penetrate from lower port, other has part will be mapped to parabolic lightguide (7) back side can't penetrate the loss of formation optically focused.The light that converges on the mirror image focus (2) becomes the directional light ejaculation again after parabolic lightguide (7) reflection.The energy flux density of emergent light becomes multiple to increase than the energy flux density of incident light, thereby realizes the multiplication of luminous energy current density.
Fig. 2 is further described the operation logic of light path, in Fig. 2, focus (9) and focus (10) are two virtual focuses, light (4) is can enter the interior decentering axle light farthest of cylindrical lens reflecting surface by what combination parabolic condenser (3) reflected, light (8) is can enter the interior nearest light of decentering axle of cylindrical lens reflecting surface (1) by what combination parabolic condenser (3) reflected, all light between light (4) and the light (8) are after combination parabolic condenser (3) reflection, should be focused on the focal line corresponding with virtual focus (10), it is the annulus of central shaft with axis of symmetry (5) that this focal line is one.But since the mirror reflection of cylindrical lens reflecting surface (1), actual will the convergence on mirror image focus (2).Know that by symmetry the light of another side is focused on the overlapping focus (2) equally.
Fig. 3 is the embodiment service chart that the central shaft of the central shaft of parabolic lightguide (7) and device has a little angle.The focus of parabolic lightguide (7) still is on the mirror image focus (2), but its opening has an angle (12) towards the central shaft with device, so, have and the big or small identical angle of angle (12) by the directional light and the central shaft of device of parabolic lightguide (7) inside surface reflection back outgoing via the descending light of mirror image focus (2).In this case, position (11) and size that parabolic lightguide (7) is clipped are also done corresponding adjustment, and the principle of its foundation is exactly to make the light from the cylinder reflecting surface all can reach focus (2).
Fig. 4 is the central shaft of parabolic lightguide (7) and the mutually perpendicular embodiment service chart of central shaft of device.The operation logic of its light and the situation of Fig. 3 are similar, but parabolic lightguide (7) is by being clipped the position difference, and in this case, parabolic lightguide (7) is clipped just in time half.
Fig. 5 is the enforcement illustration that removes parabolic lightguide (7).In this case, this device can provide a pointolite for the user.
Fig. 6 is an enforcement illustration of combination parabolic condenser (3) being clipped a part.In this case, the part (21) that the combination parabolic condenser is clipped makes between combination parabolic condenser (3) and the cylindrical lens reflecting surface (1) an interval, the receiving area that receives the combination parabolic condenser (3) of directional light reduces to some extent, but the material that uses also reduces, and cost will reduce.
Fig. 7 is the enforcement illustration of the littler parabolic lightguide (7) of focal length of employing.In this case, it is more tiny that outgoing beam becomes, and the luminous energy current density is bigger.
Fig. 8 is the method for designing of combination parabolic condenser (3).Shown in the figure, the para-curve along continuous straight runs translation certain distance that the plane upper shed makes progress, para-curve after the translation intersects mutually with former para-curve, para-curve focus after the translation is identical with translation distance with the distance (18) of former para-curve focus, removing the intersection point both sides has two parabolic segments (13) and (16) of flex point, intersection point is the combined parabola planar graph of a taper with top, flatly clip its pinnacle part then, be phantom line segments (19) and (20), cutting cut position puts and must satisfy following two requirements: the first, and the section position can not be lower than the parabolic focus position; The second, section width (17) just in time is half of two para-curve focal lengths (18), has only this moment when two parabolical relative translation distances, and promptly the distance between bifocal (18) could satisfy this two requirements after surpassing certain numerical value.The planimetric map of being made up of two parabolic segments (14) and (15) with such method obtains can obtain making up parabolic condenser (3) around its axis of symmetry rotation.When directional light incident vertically, will focus on the focal line of a circle through combination parabolic condenser (3) reflection, the focal line of this circle is positioned at the section below, and the center of circle is on axis of symmetry, and its radius just in time is the twice of section radius.
Claims (5)
1. mirror image focus eclipsed direction changeable parallel light energy flux density multiplier, it is characterized in that: it is by combination parabolic condenser (3), cylindrical lens reflecting surface (1) and parabolic lightguide (7) are formed, the focal line of combination parabolic condenser (3) forms mirror image focus (2) after cylindrical lens reflecting surface (1) reflection, and overlap with the focus of parabolic lightguide (7), wherein, combination parabolic condenser (3) is to form like this: the para-curve along continuous straight runs translation certain distance that the plane inner opening is made progress, para-curve focus after the translation is identical with translation distance with the distance (18) of former para-curve focus, para-curve after the translation and former para-curve have a point of crossing, removing the both sides, point of crossing has two parabolic segments (13 of flex point, 16), the point of crossing is the combined parabola planar graph of a taper with top, flatly clip its pinnacle part then, cutting cut position puts and must satisfy following two requirements: the first, and the section position can not be lower than the parabolic focus position; Second, section width (17) is half of two para-curve focal lengths (18), the planimetric map that two parabolic segments (14,15) that obtain with such method are formed, obtain making up parabolic condenser (3) around its axis of symmetry rotation, wherein, described certain distance surpasses certain numerical value to satisfy described two requirements.
2. mirror image focus eclipsed direction changeable parallel light energy flux density multiplier according to claim 1, it is characterized in that: the common axis of symmetry of cylindrical lens reflecting surface (1) and combination parabolic condenser (3), and 0 ° to 180 a ° angle is arranged between the axis of symmetry of parabolic lightguide (7).
3. mirror image focus eclipsed direction changeable parallel light energy flux density multiplier according to claim 1 is characterized in that: the diameter of cylindrical lens reflecting surface (1) equals half of para-curve translation distance or half of translation front and back para-curve focal lengths (18).
4. mirror image focus eclipsed direction changeable parallel light energy flux density multiplier according to claim 1, it is characterized in that: combination parabolic condenser (3) is clipped the part, but with the not variation of relative position of cylindrical lens reflecting surface (1) and parabolic lightguide (7).
5. mirror image focus eclipsed direction changeable parallel light energy flux density multiplier according to claim 1 is characterized in that: described mirror image focus eclipsed direction changeable parallel light energy flux density multiplier forms 1 to multistage system's use by the mode of serial or parallel connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100630595A CN100495108C (en) | 2007-01-26 | 2007-01-26 | Mirror image focus superposed direction-changeable parallel light energy flux density multiplier |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100630595A CN100495108C (en) | 2007-01-26 | 2007-01-26 | Mirror image focus superposed direction-changeable parallel light energy flux density multiplier |
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| CN101034204A CN101034204A (en) | 2007-09-12 |
| CN100495108C true CN100495108C (en) | 2009-06-03 |
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