CN102434854A - High-concentration collimating solar simulator optical system - Google Patents

Abstract

A high-magnification concentrating collimation solar simulator optical system, which relates to the field of optical design technology, solves the problem that the existing high-magnification concentrating solar simulator optical system uses a hollowed-out cube-cone integrator, resulting in a space for the system to operate when testing samples. Small size, inconvenient installation, and limited uniformity of light distribution. In this system, the xenon lamp light source is located at the first focal point of the ellipsoidal condenser, and the AM1.5 spectral filter is at 15 degrees to the optical axis of the ellipsoidal condenser. Angle, the optical integrator assembly is located at the second focal point of the ellipsoidal condenser, the optical integrator assembly includes an optical plastic plate and a plurality of regular hexagonal element lenses, and a plurality of regular hexagonal element lenses are arranged on the optical plastic plate to form two A group of lenses, two groups of lenses are installed opposite to the optical axis. The invention improves the uniformity of irradiance on the effective irradiation surface.

Description

A High Power Concentrating and Collimating Solar Simulator Optical System

technical field

The invention relates to the technical field of optical design, in particular to a solar simulator optical system.

Background technique

A solar simulator is a test or calibration device that simulates the characteristics of solar radiation under different air quality conditions indoors. The development of solar simulation technology is closely related to the development of space science in my country. Solar simulators have become an important part of space environment simulation experiments on the ground in my country's space science. Solar simulators are mostly used for ground environment simulation tests of space vehicles, and are the main components of space environment simulation equipment, providing spacecraft with uniform, collimated and stable light irradiation that matches the solar spectral distribution.

In other aspects, such as the detection of photoelectric conversion device solar cells in solar photovoltaic science and engineering, especially the detection of a solar cell capable of receiving high energy. Solar simulators are used in the indoor simulation of solar spectrum radiation in remote sensing technology, in the study of plant development and breeding of improved varieties in biological sciences, and so on. However, applications in different places have different requirements for solar radiation intensity, so the structural requirements for the solar simulator optical system are also different.

The prior art closest to the present invention is a paper published by the Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, named "The Design of a High Concentrating Solar Simulator", and its structure is as shown in Figure 1, including Xenon light source 1, ellipsoidal condenser 2, AM1.5 spectral filter 3 and optical integrator assembly 4. Wherein, the optical integrator component 4 is a hollowed-out internal reflection cone-shaped cube, and its small opening end is the output end of the light beam, that is, the effective irradiation surface. The specific structural relationship is: the xenon lamp light source 1 is located at the first focal point of the ellipsoidal condenser 2, and the AM1.5 spectral filter 3 forms an angle of 15 degrees with the optical axis of the ellipsoidal condenser 2, and can be set at the second focal point of the ellipsoidal condenser 2 Near the surface, the optical integrator assembly 4 is a hollowed-out internal reflection conical cube, the large opening of which is located near the second focal plane of the ellipsoidal condenser 2 . The light radiation flux emitted by the xenon lamp light source 1 is reflected by the ellipsoidal condenser 2 and converged at the designed containment angle, and projected onto the second focal plane of the ellipsoidal condenser 2 to form a larger range of radiation distribution; this larger The range of converging light beams enters the optical integrator 4 as a hollowed-out internal reflection conical cube, and after multiple reflections on its internal reflection surface, a relatively uniform and higher-energy beam is formed at the exit of the small opening end of the optical integrator 4. Beam irradiating surface of Lambertian nature.

The main problem of this optical system is that usually the homogenization system of the high-power concentrating solar simulator, that is, the optical integrator component, uses a hollowed-out cube-cone integrator. It mainly forms a uniform high-energy irradiation surface close to the exit through the multiple reflections of the focused light inside. Just because the uniform irradiated surface can only be close to the outlet of the integrator, this makes the system not have enough operating space when testing the test sample, and it is very inconvenient to install the test sample. On the other hand, due to the many reflections of the focused beam inside the integrator, the effective light energy converging to the outlet of the integrator is reduced and its uniform distribution has certain limitations, and it cannot form a parallel beam radiation with a certain collimation angle. face to face.

Contents of the invention

The present invention solves the problem that the existing high-magnification concentrating solar simulator optical system uses a hollowed-out cube-cone integrator, which results in a small operating space and inconvenient installation of the system when testing samples. At the same time, the focused beam is reflected inside the integrator. The number of times is high, the effective light energy converging to the exit of the integrator is reduced, and its uniformity distribution has limitations, and it cannot form a parallel beam irradiation surface with a certain collimation angle. It provides a high-magnification concentrating collimation solar system Simulator optical system.

A high magnification concentrating collimation type solar simulator optical system, the system includes a xenon lamp light source, an ellipsoidal condenser, an AM1.5 spectral filter and an optical integrator assembly, it also includes a collimating objective lens, the xenon lamp light source, an ellipsoidal condenser The spherical condenser, the AM1.5 spectral filter, the optical integrator assembly and the collimating objective lens are placed in sequence on the same optical axis. The optical axis of the optical axis is at an angle of 15 degrees, and the optical integrator assembly is located at the second focal point of the ellipsoidal condenser. The optical integrator assembly includes an optical glue plate and a plurality of regular hexagonal element lenses, and the plurality of regular hexagonal The element lenses are regularly arranged on the optical plastic plate to form two groups of lenses, and the two groups of lenses are installed opposite to the optical axis.

The working principle of the present invention: the optical radiation flux emitted by the xenon lamp light source described in the present invention is reflected by the ellipsoidal condenser and converged at the designed containment angle, and is projected onto the second focal plane of the ellipsoidal condenser to form a larger range irradiance distribution; this larger range of irradiance distribution is imaged to infinity by the optical integrator component to form a more uniform irradiance range, and then projected to the back of the collimator objective lens at a certain beam collimation angle through the collimator objective lens The focal plane forms a relatively uniform irradiated surface, that is, the effective irradiated surface. The optical integrator assembly adopts a symmetrical element lens array; the optical channel formed by the field mirror and the projection mirror symmetrically divides the radiation distribution converged on the second focal plane by the ellipsoidal condenser to form a relatively uniform imaging in the infinite Distant irradiance distribution. Two sets of element lens arrays form a superimposed irradiation surface at infinity. The irradiated surface is located on the rear focal plane of the collimated objective lens, that is, the effective irradiated surface.

Positive effects of the present invention: the optical system of the present invention forms the high-energy (2000 solar constants) of certain collimation angle and the effective radiation surface of uniform distribution, there is a gap between the collimating objective lens and the effective radiation surface A certain distance has a certain operable space; 1. Improve the irradiance on the effective irradiation surface; 2. Improve the uniformity of irradiance on the effective irradiating surface; 3. Form a parallel beam with a certain collimation angle.

Description of drawings

Fig. 1 is the schematic diagram of the optical system of the high magnification concentrating solar simulator of prior art;

Fig. 2 is the schematic diagram of a kind of high magnification concentrating collimation type solar simulator optical system described in the present invention;

Fig. 3 is the partial enlarged view of I place in Fig. 2;

Fig. 4 is the schematic diagram of the front view structure of the optical integrator in the optical system of a kind of high magnification concentrating collimation type solar simulator according to the present invention;

FIG. 5 is a schematic side view of the structure of FIG. 4 .

In the figure: 1. Xenon light source, 2. Ellipsoidal condenser, 3. AM1.5 spectral filter, 4. Optical integrator assembly, 5. Collimating objective lens, 6. Optical plastic plate, 7. Regular hexagonal element lens .

Detailed ways

This embodiment is described in conjunction with Fig. 2 to Fig. 4, a high-magnification concentrating and collimating solar simulator optical system, the system includes a xenon lamp light source 1, an ellipsoidal condenser lens 2, an AM1.5 spectral filter 3, and an optical integrator assembly 4 and the collimating objective lens 5, the specific structural relationship is: the xenon light source 1 is located at the first focal point of the ellipsoidal condenser 2, the AM1.5 spectral filter 3 forms an angle of 15 degrees with the optical axis of the ellipsoidal condenser 2, and the optical integrator The field lens in the assembly 4 is positioned near the second focal point of the ellipsoidal condenser 2; The distance between the collimating objective lens 5 and the optical integrator assembly 4 is the front intercept of the collimating objective lens 5; Wherein, the optical integrator assembly 4 includes light Plastic plate 6 and element lens 7, a plurality of regular hexagonal element lenses 7 are regularly arranged on the optical plastic plate 6 to form two groups of lenses, the front group is a field lens, and the rear group is a projection mirror, installed opposite to the optical axis.

This embodiment is illustrated in conjunction with FIG. 4 . The plurality of regular hexagonal element lenses 7 are regularly arranged on the optical plastic plate 6, which means that a regular hexagonal element lens 7 is the center, and then the regular hexagonal lenses are spliced with six sides. Elements penetrate 7.

The material of the ellipsoidal concentrator 2 described in this embodiment is forged aluminum, and the optical surface is finely ground and polished to be coated with a nickel layer, and then coated with an aluminum reflective film and a silicon dioxide protective film.

The material of the optical integrator assembly 4 described in this embodiment is JGS3 glass; the collimating objective lens 5 is a plano-convex lens made of JGS3 quartz glass, and the surface is coated with an anti-reflection film.

Claims (4)

1. high power concentrator collimation-type solar simulator optical system; This system comprises xenon source (1), ellipsoid condenser (2), AM1.5 spectral filter (3) and light integrator assembly (4); It is characterized in that; It also comprises collimator objective (5); Said xenon source (1), ellipsoid condenser (2), AM1.5 spectral filter (3), light integrator assembly (4) and collimator objective (5) are placed with optical axis successively, and said xenon source (1) is positioned at first along of ellipsoid condenser (2), and AM1.5 spectral filter (3) becomes 15 degree angles with the optical axis of ellipsoid condenser (2); Said light integrator assembly (4) is positioned at second along of ellipsoid condenser (2); Said light integrator assembly (4) comprises optical cement plate (6) and a plurality of regular hexagon element lens (7), and said a plurality of regular hexagon element lens (7) are formed two groups of lens by regularly arranged going up at optical cement plate (6), and said two groups of lens are installed with optical axis on the contrary.

2. a kind of high power concentrator collimation-type solar simulator optical system according to claim 1 is characterized in that, said collimator objective (5) is the preceding intercept of collimator objective (5) with the distance of light integrator assembly (4).

3. a kind of high power concentrator collimation-type solar simulator optical system according to claim 1 is characterized in that in described two groups of lens, preceding group is field lens, and the back group is projection lens, and said field lens is positioned at second along of ellipsoid condenser (2).

4. a kind of high power concentrator collimation-type solar simulator optical system according to claim 1 is characterized in that said collimator objective (5) is a planoconvex spotlight, and material is the JGS3 quartz glass, and the surface of said collimator objective (5) is coated with anti-reflection film.

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