JP2003028785A - Pseudo sunlight irradiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pseudo sunlight irradiation device capable of reducing remarkably the installation area of an optical filter to miniaturize the device, and setting long a diffused optical path length necessary for uniforming irradiation distribution, concerning the pseudo sunlight irradiation device using a diffused light irradiation system. SOLUTION: This device is equipped with a lamp housing 1 wherein an optical filter 3 is mounted on an optical radiation face having a smaller area than an irradiation range of pseudo sunlight, and a lamp such as a xenon lamp 2 is installed inside, and a reflector 5 arranged on the opposite side to the optical filter 3 in the lamp housing 1. A measuring object B supported by a proper frame 4 or the like is arranged facing to the reflecting surface of the reflector 5. The lamp is lit, and the pseudo sunlight passing through the optical filter 3 is reflected and scattered by the reflector 5, and the measuring object B is irradiated therewith.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pseudo-sunlight irradiation device that can provide a sufficient irradiation range with a small light source device.

[0002]

2. Description of the Related Art A pseudo-sunlight irradiation device is a light source device for reproducing the spectral distribution of natural sunlight with high accuracy, and measures performance of various solar energy utilizing devices such as photoelectric conversion characteristics of solar cells. It is essential for accelerated deterioration tests.

Most of the conventional pseudo sunlight irradiation devices having a large-area irradiation surface are formed by a diffused light irradiation method. The diffused light irradiation method is a method of irradiating the reflection plate with the irradiation light of the light source and applying the reflected light to the irradiation surface, and it is necessary to arrange an optical filter in the optical path from the reflection plate to the irradiation surface for spectrum adjustment. However, since the area of the required optical filter increases in proportion to the size of the irradiation surface, there is a problem that the optical filter becomes expensive.

In view of such a point, conventionally, a cylindrical glass sleeve having a diameter smaller than that of the sleeve is placed inside a cylindrical glass sleeve in which a lamp serving as a light source is installed, and a specific spectrum is provided on the surface of the cylindrical glass. There is a system in which a compound having a property of not absorbing or transmitting is deposited to function as an optical filter. However, this method has a problem in that it is difficult to uniformly deposit the compound on the cylindrical glass, and the light transmission characteristics of the cylindrical glass that acts as a filter are uneven, and a satisfactory effect cannot be obtained.

On the other hand, in the method using a geometrical optical method using an optical lens, a light flux that is condensed by a reflecting mirror or a lens and transmitted through an optical filter is made small, and then the light is diffused toward an irradiation range. Although there is an advantage that the optical filter to be used has a small area, there is a problem that expensive optical equipment such as an optical lens is required and the apparatus becomes expensive. In addition, there are disadvantages that the optical path length becomes large in order to increase the irradiation area and the apparatus becomes large in size, and the power consumption of the light source used becomes large due to the large optical path length.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional techniques, the present invention provides a pseudo-sunlight irradiation device using a diffused light irradiation method, in which the installation area of an optical filter is remarkably reduced to downsize the device. Moreover, it is an object of the present invention to provide a pseudo-sunlight irradiation device capable of taking a long diffusion light path length required to make the irradiation distribution uniform.

[0007]

The constitution of the present invention made for the purpose of solving the above-mentioned problems is to attach an optical filter to a light emitting surface having an area smaller than the irradiation range of pseudo sunlight,
A lamp such as a xenon lamp is installed inside, and the lamp housing is provided with a reflecting plate arranged on a side of the lamp housing facing the optical filter, and the object to be measured supported on an appropriate mount or the like is the reflecting plate. Of the artificial sunlight arranged to face the reflection surface of the lamp, the lamp is turned on, and the pseudo sunlight that has passed through the optical filter is reflected and diffused by the reflection plate to irradiate the object to be measured. .

In the above structure, the lamp housing is
The installation position can be adjusted up, down, or up, down, left and right, and the reflector is formed so that both sides not facing the lamp can be bent, and the reflection angle of the light emitted through the filter of the housing is reflected. By adjusting
It is possible to reduce the size of the pseudo-sunlight irradiation device that can make the illuminance distribution uniform even if the irradiation area is large, and thus it is possible to reduce the manufacturing cost.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a vertical sectional view schematically showing an example of the device of the present invention.

In FIG. 1, reference numeral 1 denotes a light-shielding lamp housing having a rectangular parallelepiped shape or a semi-cylindrical shape in which one surface is opened as a light emitting surface and a xenon lamp 2 is appropriately installed inside via a bracket (not shown). Reference numeral 3 denotes an optical filter attached to the light emitting surface, which constitutes a light source A of pseudo sunlight as described above. When mounting the optical filter 3, a transparent plate such as an acrylic plate having a thickness of about 5 to 10 mm may be interposed between the optical filter 3 and the housing 1.

Numeral 4 is a pedestal which is located outside the lamp housing 1 of the pseudo-sunlight with its center substantially at the center, and at four corners of the pedestal 4 are supporting portions 4a for supporting the solar cell module B to be measured. Are supported and arranged on the columns 4b.

Reference numeral 5 denotes a reflecting plate which is installed so as to face the optical filter 2 of the lamp housing 1 with its reflecting surface facing upward.
In the illustrated example, a central reflector 51, a left reflector 52, and a right reflector 53 are provided, and the left and right reflectors 52, 53 are formed so that their angles can be adjusted with respect to the central reflector 51. Reflector 51
For ~ 53, a white paint plate or a satin-finished aluminum plate, which has a flat spectrum distribution characteristic and is easily diffused and reflected, is used as a reflecting surface.

An example of the device of the present invention is constructed as described above, but it is desirable that the lamp housing 1 is installed so that the position in the vertical direction or the installation position in the vertical direction and the horizontal direction can be adjusted. This position adjusting function uses, for example, the columns 4b and 4b of the pedestal 4 and suspends the lamp housing 1 on the support beam 1a (or the support line 1a) which is vertically slid on the columns 4b and 4b and is installed so as to be positioned. You can install it in a posture. Further, the beam 1a may be moved back and forth with respect to the mount 4, or the lamp housing 1 may be provided so as to be slidable left and right with respect to the beam 1a. Further, a pole (not shown) which can be slid left and right can be set up near the center of the reflection plate 51, and the housing 1 can be supported by the pole so as to be slidable up and down.

In the pseudo sunlight irradiating device of the present invention configured as described above, when the lamp 2 is turned on in the state shown in the drawing, the light is transmitted through the optical filter 3 and diffused, and is reflected and diffused by the reflector 5. Then, the light receiving surface of the solar cell module B is irradiated. If uneven irradiation occurs during this irradiation, the uneven irradiation can be eliminated by adjusting the angles of the reflectors 52 and / or 53 on both sides of the reflector 5.

[0015]

The present invention is as described above, and an optical filter is attached to a light emitting surface having an area smaller than the irradiation range of pseudo sunlight, and a lamp such as a xenon lamp is installed inside the lamp housing and the lamp. The housing is provided with a reflection plate arranged on the side opposite to the optical filter, and an object to be measured supported on an appropriate mount or the like is installed toward the reflection surface of the reflection plate, and the lamp is turned on to turn on the optical system. Since the pseudo sunlight that has passed through the filter is reflected and diffused by the reflector to irradiate the object to be measured, an optical filter with a small area is sufficient, and the pseudo sunlight irradiating apparatus can be assembled into a compact form. In addition, since the measurement effect can be sufficiently obtained even if a small-sized and relatively inexpensive optical filter is used, it is possible to easily and inexpensively manufacture and provide the pseudo-sunlight irradiation device.

[Brief description of drawings]

FIG. 1 is a vertical sectional view schematically showing an example of a device of the present invention.

[Explanation of symbols]

A simulated sunlight irradiation box B Solar cell module (measurement target) 1 lamp housing 2 lamps 3 Optical filter 4 mounts 5 reflector 51 central reflector 52 Left reflector 53 Right reflector

Claims (3)

[Claims] 1. An optical filter is attached to a light emitting surface having an area smaller than an irradiation range of pseudo-sunlight, a lamp such as a xenon lamp is installed inside, and the lamp housing and the lamp housing are disposed on a side facing the optical filter. The object to be measured supported by an appropriate mount or the like is arranged toward the reflecting surface of the reflecting plate, and the simulated sunlight that has passed through the optical filter by lighting the lamp is reflected. A pseudo-sunlight irradiation device, characterized in that the plate is reflected and diffused to irradiate the object to be measured. 2. The pseudo-sunlight irradiation device according to claim 1, wherein the installation position of the pseudo-sunlight lamp housing is adjustable. 3. The reflection plate, wherein both sides of the reflection plate are bent so that the angle of the reflection surface can be adjusted with respect to the irradiation surface.
The pseudo-sunlight irradiation device according to.