CN111309054A - Solar simulator with adjustable divergence angle and design method thereof - Google Patents
Solar simulator with adjustable divergence angle and design method thereof Download PDFInfo
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Abstract
The invention relates to a solar simulator with an adjustable divergence angle and a design method thereof, and the solar simulator comprises a shell, a light source, an integrator, a reflector, a collimating mirror and a distance adjusting component, wherein the shell is fixedly connected to a roof, the light source adopts a xenon lamp, the number of output lenses of the integrator is less than sixty, the light source and the integrator are erected on the distance adjusting component, the distance adjusting component is erected in the shell, a reflector frame is arranged on one side of the shell, which is far away from the light source, the distance adjusting component drives the light source and the integrator to be close to or far away from the reflector, and the collimating mirror frame is arranged on one side of the reflector.
Description
Technical Field
The invention relates to the technical field of solar simulators, in particular to a solar simulator with an adjustable divergence angle and a design method thereof.
Background
With the expansion of the field of human activities into space, the research on space targets becomes more and more important. Optical means have the advantage of being unique in spatial target detection. The method for acquiring the radiation and scattering characteristics of the space target mainly comprises a foundation data verification method and a space-based data verification method. The space-based photoelectric equipment realizes space-based data acquisition, such as Hubble and the like, and has the defects of highest cost and great difficulty in realization technology. The ground observation mainly adopts the observation station with large caliber established on the ground, and calibrates the detector by measuring the known fixed star and star, and further realizes the star measurement of the space target, and converts to obtain the brightness information of the target. The method has high cost and is easily influenced by the environment such as weather. In addition, since sunlight is irradiated on the earth in the daytime, various irradiation characteristics of the sunlight research target cannot be directly utilized due to the influence of the atmosphere and the rotation of the earth. Solar simulation techniques need to be studied to develop large-caliber solar simulators that closely simulate the spectrum, radiant intensity, long-term stability, and divergence angle of the sun.
The solar simulator can simulate the light-emitting characteristic of real sun, is used for simulating the solar radiation of the outer space of the earth, and can vividly reproduce the collimation, uniformity and spectral characteristic of the solar radiation in the space environment in a ground laboratory. The solar simulator mainly comprises a light source, a light-gathering reflector, an optical integrator, a collimating mirror and the like, wherein light with uniform brightness emitted by the light source passes through the light-gathering reflector and then is emitted in parallel by the collimating mirror through the optical integrator, so that the simulation of the infinite sun is completed.
The beam divergence angle is a measure of the speed at which a beam diverges from the waist, and a beam with a very small divergence angle, for example, a beam radius that is nearly constant over a long transmission distance, is referred to as a collimated beam. Because of the wave nature of the light propagation, it is inevitable that there will be some divergence in the beam, which will have poor beam quality if the beam divergence angle is much larger than the physically determined emission angle; in order to further enable the generated light rays of the solar simulator to be close to the real solar light rays, the adjustment of the divergence angle of the light rays needs to be realized, and the divergence angle of the existing solar simulator cannot be adjusted when being fixed.
Therefore, in view of the above disadvantages, it is desirable to provide a solar simulator with adjustable divergence angle and a design method thereof.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem that the existing solar simulator cannot adjust the light divergence angle.
(II) technical scheme
In order to solve the technical problem, the invention provides a solar simulator with an adjustable divergence angle, which comprises a shell, a light source, an integrator, a reflector, a collimating mirror and a distance adjusting component, wherein the shell is fixedly connected to a roof, the light source adopts a xenon lamp, the number of output lenses of the integrator is less than sixty, the light source and the integrator are erected on the distance adjusting component, the distance adjusting component is erected in the shell, the reflector is erected on one side of the shell, which is far away from the light source, the distance adjusting component drives the light source and the integrator to be close to or far away from the reflector, and the collimating mirror is erected on one side of the reflector.
Through adopting above-mentioned technical scheme, under the unchangeable circumstances of integrator light-emitting parameter, only need remove light source and integrator simultaneously, can realize the regulation to the divergence angle of light beam, and the migration distance can obtain according to the light path design at initial stage, and utilize the mode that light source and integrator removed simultaneously, reduce the variable and the error that produce when removing, guarantee to adjust the divergence angle and have swift mode and higher degree of accuracy, and install the speculum additional between integrator and collimating mirror, utilize the change of reflection angle, the minimum regulation amplitude of the divergence angle of light beam that makes the collimating mirror output can be about 0.5, make solar simulator can produce more diversified divergence angle light, realize that solar simulator irradiation area adjusts more carefully.
As a further description of the present invention, preferably, the distance adjusting component includes a connecting plate, a driving motor, a screw rod and a driving block, the connecting plate is fixedly connected to the light source and the integrator, the driving motor is fixedly connected to the housing, the screw rod is rotatably connected to the housing, the axis direction of the screw rod is horizontal and points to the reflector, one end of the screw rod is fixedly connected to the output end of the driving motor, the driving block is connected to the screw rod by a thread, and the driving block is fixedly connected to the connecting plate.
By adopting the technical scheme, the motor is utilized to drive the screw rod to rotate, so that the driving block can drive the connecting plate to move, and further the positions of the light source and the integrator can be adjusted.
As a further description of the present invention, preferably, a slide rail is fixedly connected in the housing, the length direction of the slide rail is the same as the axial direction of the lead screw, a slide block is slidably connected on the slide rail, and the slide block is fixedly connected on the connecting plate.
Through adopting above-mentioned technical scheme, make light source and integrator can not only guarantee to move when removing and be in the same direction as smooth, and moving direction is more stable to can also play the effect of sharing lead screw atress, avoid the lead screw long-time load and appear warping, influence the problem that the lead screw normally worked.
As a further description of the present invention, preferably, a trumpet-shaped light collecting cylinder is fixedly connected to one side of the integrator close to the light source, one end of the light collecting cylinder with a large caliber points to the light source, one end of the connecting plate is fixedly connected to one end of the light collecting cylinder with a large caliber, and one end of the light collecting cylinder with a small caliber is fixedly connected to the integrator.
Through adopting above-mentioned technical scheme, but the light that can reflect in the light collection section of thick bamboo can not only collect the light that the light source sent basically, can also all reflect the integrator with the light that shines on the light collection section of thick bamboo inner wall, guarantees that the light that the integrator shines out has sufficient luminance, and the loss of greatly reduced light source light improves light utilization ratio.
As a further explanation of the present invention, it is preferable that a tungsten lamp is slidably attached to the housing on the reflector side, and the light irradiation direction of the tungsten lamp is directed to the collimator lens.
By adopting the technical scheme, the tungsten lamp and the xenon lamp light source are alternately used to make up the deficiency of the reflection spectrum of a single xenon lamp, so that the solar simulator has a wider application range.
As a further description of the present invention, preferably, a heat dissipation fan is fixedly connected in the housing, and an air outlet of the heat dissipation fan points to the light source.
By adopting the technical scheme, the heat of the xenon lamp light source is reduced by matching the interval between the light source and the light collecting barrel, and the influence on the service life of the light source due to overhigh temperature of the light source is avoided.
As a further description of the present invention, preferably, a light-passing hole is formed in a housing on one side of the reflector, a steering component is erected at a lower end of the light-passing hole, the steering component includes a steering motor, a gear and a slewing bearing, the steering motor is fixedly connected in the housing, the gear is fixedly connected to an output end of the steering motor, an inner ring of the slewing bearing is fixedly connected to a lower end of the light-passing hole, an outer ring of the slewing bearing is sleeved with a gear ring, the gear ring is engaged with the gear, a rotating shell is fixedly connected to a bottom of the outer ring of the slewing bearing.
Through adopting above-mentioned technical scheme, rotatory shell can rotate on vertical direction under the drive that turns to the part, and then the left and right directions of adjustable collimating mirror reflection light makes this solar simulator's irradiation range bigger.
The invention also provides a design method of the solar simulator with the adjustable divergence angle, which comprises the following steps,
designing and determining a main light path of the solar simulator according to the layout requirement of the solar simulator;
designing the light source and the integrator into a whole, moving the position of the whole, and adjusting the distance between the light source and the integrator and the collimating mirror;
determining the positions of a light source and an integrator when the divergence angle is minimum according to the main light path parameters designed in the first step, and taking the positions as initial positions of movement; and changing the distance between the light source and the integrator and the collimating mirror to adjust the divergence angle, wherein the position when the divergence angle is maximum is the movement termination position of the light source and the integrator.
By adopting the technical scheme, the distance between the integrator and the reflector can be determined by the degree of the required divergence angle by utilizing a simple measuring and calculating mode, the adjustment of a subsequent motor is facilitated, the divergence angle adjusting difficulty is greatly reduced by matching with the high-precision position transmission of the lead screw, the solar simulator can accurately position the divergence angle according to the requirement, and the corresponding experimental conclusion is ensured to be more accurate.
As a further illustration of the invention, it is preferred to use a tungsten lamp instead of a xenon-based light source when the desired emission spectrum is greater than 1100 nm.
By adopting the technical scheme, the application range of the solar simulator is improved, the solar simulator mainly comprising the tungsten lamp does not need to be purchased, and the experiment cost can be effectively saved.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
1. the invention can change the divergence angle by changing the distance between the integrator and the reflector under the condition that the light-emitting parameters of the integrator are not changed, and the light source and the integrator are designed into a whole, the position of the whole is moved, the distance between the light source and the integrator and the reflector is adjusted, and the irradiation area adjustment of the solar simulator is realized;
2. the slipping tungsten lamp is additionally arranged, so that the defect of a single light source reflection spectrum can be overcome, the light of a xenon lamp light source can be prevented from interfering, and the practicability of the solar simulator is improved.
3. The direction of the collimating lens can be changed in multiple directions, so that the solar simulator has a larger irradiation range, can be adapted to experimental environments under different conditions, and improves the applicability of the solar simulator.
Drawings
FIG. 1 is a top plan view of the final assembly of the present invention;
FIG. 2 is a bottom plan view of the final assembly of the present invention;
FIG. 3 is a block diagram of the pitch adjustment assembly of the present invention;
FIG. 4 is a view showing the position of the tungsten lamp according to the present invention;
FIG. 5 is a diagram of the light source and integrator position relationship of the present invention;
FIG. 6 is a diagram of integrator and light source positions at small divergence angles in accordance with the present invention;
fig. 7 is a diagram of integrator and light source positions for large divergence angles in accordance with the present invention.
In the figure: 1. a housing; 11. rotating the housing; 12. a connecting flange; 13. a light through hole; 2. a light source; 21. a three-way regulator; 22. a power source; 3. an integrator; 31. a light collecting cylinder; 4. a mirror; 5. a collimating mirror; 51. a base; 6. a pitch adjustment member; 61. a connecting plate; 62. a drive motor; 63. a lead screw; 64. a drive block; 65. a slide rail; 66. a slider; 7. a tungsten lamp; 71. an electric push rod; 8. a heat radiation fan; 81. a heat-dissipating surface cooler; 9. a steering member; 91. a steering motor; 92. a gear; 93. and a slewing bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
A solar simulator with an adjustable divergence angle combines with a graph 1, a graph 2 and a graph 3, and comprises a shell 1, a light source 2, an integrator 3, a reflector 4, a collimating mirror 5 and a distance adjusting part 6, wherein the shell 1 is a square shell, the top of the shell 1 is fixedly connected with a connecting flange 12, the shell 1 is fixedly connected to a roof through the connecting flange 12, the light source 2 adopts a xenon lamp, the number of output lenses of the integrator 3 is within sixty, the light source 2 and the integrator 3 are erected on the distance adjusting part 6, the distance adjusting part 6 is erected in the shell 1, the reflector 4 is a plane mirror, the reflector 4 is erected on one side of the shell 1 far away from the light source 2, the distance adjusting part 6 drives the light source 2 and the integrator 3 to be close to or far away from the reflector 4, the shell 1 on one side of the reflector 4 is provided with a light through hole 13, and the collimating mirror 5 is erected below the reflector 5 so that light can penetrate through the shell; the light generated by the light source 2 irradiates into the integrator 3, the integrator 3 outputs a plurality of light beams to irradiate to the reflector 4, the light beams are reflected by the reflector 4 and then irradiate to the collimator 5, and the light beams are reflected to the area required to irradiate again by the collimator 5.
Combine fig. 3, fig. 4, under the unchangeable circumstances of integrator 3 light-emitting parameter, only need to remove light source 2 and integrator 3 simultaneously, can realize the regulation to the divergent angle of beam, and the migration distance can obtain according to the light path design of initial stage, and utilize the mode that light source 2 and integrator 3 moved simultaneously, reduce the variable and the error that produce when moving, guarantee to adjust the divergent angle and have swift mode and higher degree of accuracy, and install speculum 4 additional between integrator 3 and collimating mirror 5, utilize the change of reflection angle, the minimum regulation amplitude of the divergent angle of beam that makes collimating mirror 5 output can be about 0.5, make the solar simulator can produce more diversified divergent angle light, realize that the solar simulator irradiation area adjusts more carefully.
With reference to fig. 3 and 5, the tail of the light source 2 is provided with a three-way regulator 21, the three-way regulator 21 is fixed in the housing 1, and fine adjustment of the position of the light source 2 in the vertical, left, right, front and back directions can be realized by adjusting the three-way regulator 21, so that the optical axis of the light source 2 coincides with the central optical axis of the integrator 3; integrator 3 is close to 2 one sides of light source and has linked firmly a collection light section of thick bamboo 31 of loudspeaker form, the directional light source 2 of the big one end of collection light section of thick bamboo 31 bore, the little one end of collection light section of thick bamboo 31 bore links firmly with integrator 3, collection light section of thick bamboo 31 embeds there is the lens, can reflect light, the light that can not only send the light source is collected basically, can also all reflect integrator 3 with the light that shines on the collection light section of thick bamboo 31 inner wall, the light of guaranteeing integrator 3 to shine out has sufficient luminance, the loss of 2 light of greatly reduced light source, the light utilization rate is improved.
Combine fig. 3, fig. 4, the roll adjustment part 6 includes connecting plate 61, driving motor 62, lead screw 63 and driving block 64, connecting plate 61 is square steel plate, connecting plate 61 one end is linked firmly with the one end that the aperture of a light-collecting cylinder 31 is big, the connecting plate 61 other end links firmly on the light source 2 dustcoat, driving motor 62 links firmly in shell 1, lead screw 63 rotates and connects in shell 1, lead screw 63 axis direction level and directional speculum 4, lead screw 63 one end links firmly with driving motor 62 output, driving block 64 threaded connection is on lead screw 63, driving block 64 links firmly on connecting plate 61, when needing to adjust the divergence angle, only need utilize motor drive lead screw 63 to rotate, can make driving block 64 drive connecting plate 61 move, and then realize the regulation to light source 2 and 3 positions of integrator, and easy operation is swift.
Combine fig. 3, fig. 4, slide rail 65 has been linked firmly in the shell 1, slide rail 65 length direction is the same with lead screw 63 axis direction, sliding connection has slider 66 on slide rail 65, slider 66 links firmly on connecting plate 61, make light source 2 and integrator 3 can not only guarantee to move when removing and be smooth, and the moving direction is more stable, and can also play the effect of sharing lead screw 63 atress, avoid lead screw 63 long-time load and appear warping, influence the problem of lead screw 63 normal work.
Referring to fig. 3 and 4, an electric push rod 71 is arranged on the housing 1 on one side of the reflector 4, the telescopic direction of the electric push rod 71 is the same as the axial direction of the lead screw 63, the output end of the electric push rod 71 is fixedly connected with a tungsten lamp 7, the light irradiation direction of the tungsten lamp 7 points to the collimating mirror 5, the electric push rod 71 extends out to enable the tungsten lamp 7 to move to the light through hole 13, so that light emitted by the tungsten lamp 7 can irradiate on the collimating mirror 5, the electric push rod 71 contracts to enable the tungsten lamp 7 to move out of the light through hole 13, at the moment, the light source 2 is started to enable light of the light source 2 to irradiate on the collimating mirror 5, the tungsten lamp 7 and the xenon lamp light source 2 are alternately used to make up the deficiency of the reflection spectrum of a single xenon lamp.
With reference to fig. 3 and 4, a heat dissipation fan 8 is fixedly connected in the housing 1, an air outlet of the heat dissipation fan 8 points to the light source 2, a heat dissipation surface cooler 81 is arranged on one side of the reflector 4, and the heat of the xenon light source 2 is reduced by matching with the interval between the light source 2 and the light collection tube 31, so that the influence on the service life of the light source 2 due to overhigh temperature of the light source is avoided; the reflector 4 is also provided with a power supply 22 on one side, and the power supply 22 is connected with the light source 2 and the tungsten lamp 7 so that the light source 2 and the tungsten lamp 7 can work normally.
Combine fig. 3, fig. 6, lead to unthreaded hole 13 lower extreme and erect and turn to part 9, turn to part 9 including turning to motor 91, gear 92 and slewing bearing 93, turn to motor 91 and link firmly in shell 1, gear 92 links firmly turning to the motor 91 output, and slewing bearing 93 inner circle links firmly and leads to unthreaded hole 13 lower extreme, and slewing bearing 93 outer lane has cup jointed the ring gear, the ring gear meshes with gear 92, and slewing bearing 93 outer lane bottom has linked firmly rotatory shell 11, has linked firmly base 51 in the rotatory shell 11, and collimating mirror 5 links firmly on base 51, and rotatory shell 11 can rotate on vertical direction under the drive that turns to part 9, and then the left and right directions of adjustable collimating mirror 5 reflection light, makes the irradiation range of this solar simulator bigger.
With reference to fig. 6 and 7, the present invention further provides a design method of a solar simulator with adjustable divergence angle, comprising the following steps,
designing and determining a main light path of the solar simulator according to the layout requirement of the solar simulator;
designing the light source 2 and the integrator 3 into a whole, moving the position of the whole, and adjusting the distance between the light source 2 and the integrator 3 and the collimating mirror 5;
according to the main light path parameters designed in the first step, determining the positions of the light source 2 and the integrator 3 when the divergence angle is minimum as the initial positions of movement; the divergence angle is adjusted by changing the distance between the light source 2 and the integrator 3 and the collimator lens 5, and the position when the divergence angle is maximum is the movement termination position of the light source 2 and the integrator 3.
And IV, when the required emission spectrum is larger than 1100nm, the tungsten lamp 7 is selected to replace the light source 2 mainly comprising the xenon lamp, the application range of the solar simulator is enlarged, the solar simulator mainly comprising the tungsten lamp 7 does not need to be purchased, and the experiment cost can be effectively saved.
By adopting the method, the distance between the integrator 2 and the collimating mirror 5 (which is equal to the linear distance of the reflecting mirror 4) can be determined by the degree of the required divergence angle through a simple measuring and calculating mode, so that the subsequent adjustment of the motor is facilitated, and the solar simulator can accurately position the divergence angle according to the requirement by matching with the high-precision position transmission of the lead screw 63, thereby ensuring that the corresponding experimental conclusion is more accurate.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A solar simulator with adjustable divergence angle is characterized in that: including shell (1), light source (2), integrator (3), speculum (4), collimating mirror (5) and roll adjustment part (6), shell (1) links firmly on the roof, light source (2) adopt the xenon lamp, integrator (3) output lens quantity is within sixty, light source (2) and integrator (3) are erect on roll adjustment part (6), roll adjustment part (6) erect in shell (1), light source (2) one side is kept away from in shell (1) is erect in speculum (4), roll adjustment part (6) drive light source (2) and integrator (3) are close to or keep away from speculum (4), collimating mirror (5) erect in speculum (4) below.
2. A solar simulator having an adjustable divergence angle according to claim 1, wherein: the distance adjusting component (6) comprises a connecting plate (61), a driving motor (62), a lead screw (63) and a driving block (64), the connecting plate (61) is fixedly connected to the light source (2) and the integrator (3), the driving motor (62) is fixedly connected to the shell (1), the lead screw (63) is rotatably connected to the shell (1), the axis direction of the lead screw (63) is horizontal and points to the reflector (4), one end of the lead screw (63) is fixedly connected to the output end of the driving motor (62), the driving block (64) is in threaded connection to the lead screw (63), and the driving block (64) is fixedly connected to the connecting plate (61).
3. A solar simulator having an adjustable divergence angle according to claim 2, wherein: the sliding rail (65) is fixedly connected in the shell (1), the length direction of the sliding rail (65) is the same as the axial direction of the lead screw (63), the sliding rail (65) is connected with a sliding block (66) in a sliding mode, and the sliding block (66) is fixedly connected on the connecting plate (61).
4. A solar simulator having an adjustable divergence angle according to claim 3, wherein: one side of the integrator (3) close to the light source (2) is fixedly connected with a horn-shaped light collecting cylinder (31), one end of the light collecting cylinder (31) with a large caliber points to the light source (2), one end of the connecting plate (3) is fixedly connected with one end of the light collecting cylinder (31) with a large caliber, and one end of the light collecting cylinder (31) with a small caliber is fixedly connected with the integrator (3).
5. A solar simulator having an adjustable divergence angle according to claim 1, wherein: the shell (1) below the reflector (4) is connected with a tungsten lamp (7) in a sliding way, and the light irradiation direction of the tungsten lamp (7) points to the collimating lens (5).
6. A solar simulator having an adjustable divergence angle according to claim 1, wherein: a heat radiation fan (8) is fixedly connected in the shell (1), and an air outlet of the heat radiation fan (8) points to the light source (2).
7. A solar simulator having an adjustable divergence angle according to claim 1, wherein: light hole (13) have been seted up in shell (1) of speculum (4) below, and light hole (13) lower extreme has been erect and has been turned to part (9), turns to part (9) including turning to motor (91), gear (92) and slewing bearing (93), turns to motor (91) and links firmly in shell (1), and gear (92) link firmly and turn to motor (91) output, and slewing bearing (93) inner circle links firmly at light hole (13) lower extreme, and slewing bearing (93) outer lane has cup jointed the ring gear, the ring gear meshes with gear (92), and slewing bearing (93) outer lane bottom has linked firmly rotatory shell (11), and collimating mirror (5) are erect in rotatory shell (11).
8. A design method of a solar simulator with an adjustable divergence angle is characterized in that: comprises the following steps of (a) carrying out,
designing and determining a main light path of the solar simulator according to the layout requirement of the solar simulator;
II, designing the light source (2) and the integrator (3) into a whole, moving the position of the whole, and adjusting the distance between the light source (2) and the integrator (3) and the collimating mirror (5);
according to the main light path parameters designed in the first step, determining the positions of the light source (2) and the integrator (3) when the divergence angle is minimum as the initial position of movement; the divergence angle is adjusted by changing the distance between the light source (2) and the integrator (3) and the collimator lens (5), and the position when the divergence angle is maximum is the movement termination position of the light source (2) and the integrator (3).
9. The method for designing a solar simulator with adjustable divergence angle according to claim 8, wherein: when the required emission spectrum is larger than 1100nm, a tungsten lamp (7) is selected to replace a light source (2) mainly comprising a xenon lamp.
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| CN115095818A (en) * | 2022-07-15 | 2022-09-23 | 北京环境特性研究所 | Remote irradiation solar simulator system |
| CN115199967A (en) * | 2022-07-15 | 2022-10-18 | 北京环境特性研究所 | Irradiation distance adjustable solar simulator system |
| CN115095818B (en) * | 2022-07-15 | 2023-11-24 | 北京环境特性研究所 | Remote irradiation solar simulator system |
| CN115199967B (en) * | 2022-07-15 | 2024-01-12 | 北京环境特性研究所 | Irradiation distance adjustable solar simulator system |
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| CN111309054B (en) | 2023-09-22 |
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