JP2012084449A - Light irradiation device, pseudo sunlight irradiation device, and inspection device for solar cell panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust the quantity of irradiated light without changing the spectral distribution of light irradiated on an irradiated object.SOLUTION: A light shielding member 32, which adjusts the quantity of emitted light with spectrum adjusted as a light quantity adjustment member, is arranged between an opening plate 3b as an opening member arranged at a reflective front side of a reflecting member 3a for reflecting the light emitted from a xenon light source 2 and having openings 31 for extracting the emitting light of the xenon light source 2, and the reflecting member for reflecting the light emitted from the xenon light source 2. The light shielding member 32 is fixed by building on opposite sides of the reflecting member 3a. The quantity of the emitting light is adjusted according to a width dimension of the light shielding member 32.

Description

  The present invention relates to a light irradiating device for irradiating an object to be irradiated with highly directional light, and a pseudo sunlight irradiating device for irradiating an object to be irradiated with pseudo sunlight using the light irradiating device, The present invention relates to an inspection apparatus for a solar cell panel that performs pass / fail judgment by measuring output characteristics of the solar cell panel using the simulated solar light irradiation device.

  Conventionally, in a conventional pseudo-sunlight irradiation device as a light source device for reproducing the spectrum distribution of sunlight with high accuracy, an optical filter (air mass) is turned on by turning on a xenon lamp or the like in order to obtain light having a desired spectrum. Attempts have been made to make the illuminance distribution uniform in the object to be measured by reflecting and diffusing the simulated sunlight that has passed through the filter with a reflector.

  FIG. 12 is a longitudinal sectional view schematically showing an example of a configuration of a main part of a conventional light irradiation apparatus, in which a lamp light source is accommodated in a reflection box, and light is introduced into the light guide member from the opening of the reflection box. It is a longitudinal cross-sectional view which shows a case.

  As shown in FIG. 12, in a conventional light irradiation apparatus 100, a substantially point light source 101 using, for example, a metal halide lamp is included in a reflection box 102 whose inner wall is covered with, for example, a silver reflection surface. A pinhole-shaped opening 103 is opened on the surface of the reflection box 102. In this pinhole-shaped opening 103, a light guide member 104 is installed with its incident end face 105 facing the substantially point light source 101 in the reflection box 102. At this time, it is desirable that the shape of the pinhole-shaped opening 103 matches the shape of the incident end face 105 of the light guide 104.

  With the above configuration, the light emitted from the substantially point light source 101 is repeatedly reflected by the silver reflecting surface of the inner wall of the reflection box 102 and finally emitted from the pinhole-shaped opening 103, The light enters the incident end face 105. As already described, the light incident on the light guide 104 is emitted from the emission end face 106 as directional light having a high directivity of about ± 10%.

  As described above, in the light source device using the light guide member 104, the incident end face 103 of the light guide member 104 and the substantially point light source 101 are optically coupled through the pinhole-shaped opening 103, thereby achieving high directivity. It is possible to realize the light irradiation apparatus 100 that can emit the characteristic light with high efficiency.

  The conventional light irradiation apparatus 100 takes out light emitted from the light source from a reflection box 102 having a plurality of openings 103 and guides the light in a light guide member 104 as a directivity control member arranged in the same manner. Is controlled to radiate to the irradiated surface.

JP 2003-98354 A

  The conventional configuration is an optical system that introduces light into the tapered light guide member 104, propagates the light through the inside, and extracts the light. However, the light quantity adjustment function of the optical system is not mentioned at all. There are several options for changing the amount of light with this optical system, such as changing the size of the opening 103 itself for extracting light from the reflection box 102 and shielding the emitted light from the tapered light guide member 104. Although the possibility remains, the structure of adjusting the irradiation light quantity when irradiating the irradiated object with simulated sunlight so that the spectral distribution of simulated sunlight is not adversely affected as much as possible with the above-mentioned conventional configuration. Has not solved the problem.

  The present invention solves the above-mentioned conventional problems, and uses a light irradiation device capable of easily adjusting the amount of irradiation light without changing the spectral distribution of the light irradiated to the irradiated object, and the light irradiation device. Providing a simulated solar irradiation device for irradiating an object to be irradiated with simulated sunlight, and a solar cell panel inspection device for determining pass / fail by measuring the output characteristics of the solar cell panel using the simulated sunlight irradiation device The purpose is to do.

  The light irradiation device of the present invention is provided with a first light source, a first reflecting member that reflects light emitted from the first light source, and a reflection front side of the first reflecting member, and the light emitted from the light source. An opening member in which an opening for taking out the light is formed, a first light guide member that takes out light emitted from the opening of the opening member from one end face and emits light having improved directivity from the other end face, and the first light guide member A first optical filter that adjusts the spectrum of the light emitted from the other end face of the one light guide member, and a light amount adjusting member is disposed for each of the openings, and the light whose spectrum is adjusted by the light amount adjusting member is emitted. The light quantity is adjusted, and the above object is achieved.

  Preferably, the light amount adjusting member in the light irradiation device of the present invention is disposed between the opening member and the first reflecting member.

  Further preferably, the light amount adjusting member in the light irradiation apparatus of the present invention is a light shielding member having a predetermined width that is stretched over and opposed to the opposite side of the first reflecting member, and according to the width size of the predetermined width. The emitted light amount is adjusted.

  Further preferably, the light amount adjusting member in the light irradiation device of the present invention is a light shielding member obtained by blackening a metal having no wavelength dependency.

  The simulated sunlight irradiation device of the present invention is a surface irradiation that takes in the simulated sunlight from the light irradiation device of the present invention from one end surface and propagates the inside thereof to irradiate the irradiated object with light from a flat surface. For this purpose, the above object is achieved.

Moreover, the simulated sunlight irradiation apparatus of the present invention includes a first light irradiation apparatus that is the light irradiation apparatus of the present invention,
A second light source, a second reflecting member that reflects light emitted from the second light source, and light emitted from the second reflecting member from one end face to emit light having enhanced directivity from the other end face A second light irradiation device comprising: a second light guide member; and a second optical filter that adjusts a spectrum of light emitted from the other end surface of the second light guide member;
A light mixing member that obtains pseudo sunlight similar to sunlight by mixing light from the first light irradiation device and light from the second light irradiation device, and one end face of the pseudo sunlight from the light mixing member There are provided a plurality of sets of third light irradiating devices having a third light guide member that takes in the light from the surface and propagates the inside thereof to uniformly irradiate the irradiated object with light from a flat surface.

  Further preferably, in the simulated sunlight irradiation device of the present invention, the optical system having the first light irradiation device, the second light irradiation device, and the third light irradiation device is defined as one unit, and the units are A plurality of two units arranged opposite to each other in the left-right direction and contacting the other end surfaces of the third light guide member of the third light irradiation device are arranged in the front-rear direction according to the size of the irradiated object. Yes.

  Further preferably, in the simulated sunlight irradiation device of the present invention, the left set in which the first light irradiation device, the second light irradiation device, and the light mixing unit are disposed, the first light irradiation device, the second Between the light irradiation device and the right set on which the light mixing unit is disposed, the mixed light from the left light mixing unit is taken in from one end surface and propagated through the inside, and the mixed light from the right light mixing unit is transmitted. A fourth light guide member that takes in from the other end surface and propagates through the inside thereof to uniformly irradiate the object to be irradiated with light from a flat surface is provided in place of the third light guide member, and this is defined as one unit. Depending on the size of the irradiated object, a plurality of the units are arranged in the front-rear direction.

  The inspection apparatus for solar cell panels of the present invention measures the output characteristics of the solar cell panel by using the simulated solar light irradiation apparatus of the present invention and makes a pass / fail judgment, thereby achieving the above object. .

  With the above configuration, the operation of the present invention will be described below.

  In the present invention, the first light source, the first reflecting member that reflects the emitted light from the first light source, and the opening that is disposed on the reflection front side of the first reflecting member and extracts the emitted light from the first light source. A first light guide member that takes in light emitted from one end face and emits light with enhanced directivity from the other end face, and the other of the first light guide members. A first optical filter that adjusts the spectrum of the light emitted from the end face, and a light amount adjusting member is disposed for each opening, and the amount of emitted light of the spectrum adjusted by the light amount adjusting member is adjusted.

  In this way, the light amount adjusting member is arranged for each opening from which the emitted light of the first light source is taken out, and the emitted light amount adjustment of the spectrum-adjusted light is performed by the light amount adjusting member. When adjusting the balance according to the position of the emitted light to the irradiated object, without changing the state of the optical system until the light is incident on the light guide member for surface irradiation, only the amount of light irradiated to the irradiated object Can be adjusted. That is, when irradiating the irradiated object with simulated sunlight, it is possible to adjust only the irradiation light amount without changing the spectrum distribution even after fixing the spectrum distribution of the irradiation light.

  As described above, according to the present invention, the light amount adjusting member is arranged for each opening from which the emitted light of the first light source is extracted, and the emitted light amount adjustment of the spectrum-adjusted light is performed by the light amount adjusting member. When adjusting the balance according to the position of the emitted light from the light guide member to the object to be irradiated, only the amount of irradiation light is applied without changing the state of the optical system halfway until the light is incident on the light guide member for surface irradiation. Can be adjusted. That is, when irradiating the object with simulated sunlight, only the amount of irradiation light can be adjusted without changing the spectrum distribution even after fixing the spectrum distribution of the irradiation light.

It is a perspective view which shows typically the principal part structural example of the pseudo | simulation sunlight irradiation apparatus in Embodiment 1 of this invention. It is a longitudinal cross-sectional view which shows typically the principal part structural example of the simulated sunlight irradiation apparatus of FIG.

It is a perspective view which shows the xenon light source of FIG. 1, the reflection member in which this is accommodated, and the opening board of the front. (A) is a longitudinal cross-sectional view of the xenon light source, the reflecting member, the aperture plate, the light shielding member, and the tapered light guide member of FIG. 1, and (b) is a plan view showing the aperture of the aperture plate of FIG. (A) And (b) is a perspective view for demonstrating further about light quantity adjustment of the pseudo | simulation sunlight irradiation apparatus of this Embodiment 1. FIG. It is a top view of the pseudo | simulation sunlight irradiation apparatus of FIG. (A) is a figure which shows the illumination intensity with respect to the wavelength of a xenon lamp, (b) is a figure which shows the illumination intensity with respect to the wavelength of a halogen lamp. It is a perspective view which shows typically the principal part structural example of the simulated sunlight irradiation apparatus in Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows typically the principal part structural example of the simulated sunlight irradiation apparatus of FIG. (A) And (b) is a perspective view for demonstrating further about the light quantity adjustment of the pseudo | simulation sunlight irradiation apparatus of this Embodiment 2. FIG. It is a top view of the simulated sunlight irradiation apparatus of FIG. It is a longitudinal cross-sectional view which shows typically the example of a principal part structure of the conventional light irradiation apparatus, Comprising: A longitudinal section which shows the case where a lamp light source is accommodated in a reflection box and light is introduced into the light guide member from the opening part of a reflection box FIG.

  Below, while applying the light irradiation apparatus of this invention to a pseudo-sunlight irradiation apparatus, and this pseudo-sunlight irradiation apparatus when it applies to the inspection apparatus for solar cell panels, it demonstrates in detail, referring drawings. Explained. In addition, each thickness, length, etc. of the structural member in each figure are not limited to the structure to illustrate from a viewpoint on drawing preparation.

(Embodiment 1)
FIG. 1 is a perspective view schematically showing a configuration example of a main part of a simulated solar light irradiation apparatus according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view schematically showing an example of the configuration of the main part of the simulated solar light irradiation apparatus of FIG.

  1 and 2, the pseudo-sunlight irradiation device 1 according to the first embodiment includes a xenon light source 2 of a xenon lamp, a reflection member 3a having an inner surface that houses the xenon light source 2 and a front portion thereof. An opening plate 3b to be covered, and a tapered light guide member 4 that is a taper coupler that improves the directivity by taking in xenon light from an opening (not shown) of the opening plate 3b and propagating the light through the inside. The first light irradiating device 6 having an air mass filter 5 as a first optical filter (spectrum adjusting filter) that filters the xenon light from the tapered light guide member 4 to produce a pseudo-sunlight spectrum on the short wavelength side. Is provided. As described above, in the first light irradiation device 6, the emitted light from the xenon light source 2 is reflected and collected by the reflecting member 3a and emitted from the opening of the aperture plate 3b, and this xenon emitted light is called a taper coupler. It takes in from the lower end surface of the taper light guide member 4 and propagates through the inside to produce parallel light with high directivity, and emits xenon light with high directivity from the upper end surface of the taper light guide member 4 through the air mass filter 5. The xenon light from the air mass filter 5 corresponds to the spectrum on the short wavelength side of the pseudo-sunlight.

  Further, the simulated solar light irradiation device 1 includes a halogen light source 7 such as a halogen lamp, a reflection member 8 whose inner surface that accommodates the halogen light source 7 is a reflection surface, and halogen emission light reflected by the inner surface of the reflection member 8. The tapered light guide member 9 that improves the directivity by taking in from the lower end surface and propagating the inside, and the halogen emitted light from the end surface of the tapered light guide member 9 is filtered to form pseudo-sunlight on the long wavelength side. A second light irradiation device 11 having an air mass filter 10 as a second optical filter (spectrum adjustment filter) is provided. Thus, in the second light irradiation device 11, the emitted light of the halogen light source 7 is reflected by the reflecting member 8 and condensed and emitted, and this halogen emitted light is emitted from one end face of the tapered light guide member 9 called a tapered coupler. The light is taken in and propagated through the inside to produce parallel light with high directivity, and halogen output light with high directivity is emitted from the other end face of the tapered light guide member 9 through the air mass filter 10 for spectrum adjustment. The halogen light from the air mass filter 10 corresponds to the long wavelength side spectrum of pseudo-sunlight. Although the halogen light source 7 may be a single filament type, in order to increase power, here, the halogen light source 7 uses a two-filament type and uses a tapered light guide member 9 corresponding to each of two halogen lamps.

  Further, the pseudo-sunlight irradiation device 1 reflects the short wavelength xenon emission light from the air mass filter 5 for spectrum adjustment of the first light irradiation device 6 and also for spectrum adjustment of the second light irradiation device 11. Light mixing section such as a wavelength selection mirror (or wavelength mixing mirror) as a reflection / transmission means for obtaining pseudo-sunlight similar to sunlight by transmitting light having a long wavelength from the air mass filter 10 and transmitting it. 12 and pseudo-sunlight, which is diffused light from the light mixing unit 12, is taken from one end face and propagated through the inside thereof to uniformly distribute light L having high directivity to the irradiated object 13 such as a solar cell panel. A third light irradiation device 15 having a light guide member 14 for surface irradiation is provided. Moreover, as shown in FIG. 2, although the 3rd light irradiation apparatus 15 is arrange | positioned at right and left, light guide members 14 contact | abut each other's end surface.

  FIG. 3 is a perspective view showing the xenon light source 2 of FIG. 1, the reflecting member 3a in which it is accommodated, and the opening plate 3b in front of it. 4A is a longitudinal sectional view of the xenon light source 2, the reflecting member 3a, the aperture plate 3b, the light shielding member 32, and the tapered light guide member 4 in FIG. 1, and FIG. 4B is an aperture portion of the aperture plate 3b in FIG. 4 is a plan view showing a light shielding member 32. FIG.

  As shown in FIGS. 3, 4 (a), and 4 (b), a reflecting member 3 a for reflecting and collecting the light emitted from the xenon light source 2, and an opening as an opening member in front of the reflecting direction. The plate 3b is provided in a curved shape, and a plurality of openings 31 are formed at predetermined intervals on the opening plate 3b. Xenon light having good directivity is extracted from the opening 31 and is incident on the lower end surface of the tapered light guide member 4 that is a tapered coupler. When the opening size of the opening 31 is increased, a larger amount of irradiation light can be incident on the lower end surface of the tapered light guide member 4. Further, the reflection member is arranged such that a line-shaped (strip-shaped) light-shielding member 32 having a predetermined width d overlaps a part of the opening 31 between the opening 31 of the opening plate 3b and the reflecting member 3a. It is spanned between the opposite sides of 3a and fixed. As described above, the light shielding member 32 can be attached to the reflecting member 3a. When the light shielding member 32 is attached between the opening 31 of the aperture plate 3b and the reflecting member 3a, the light shielding amount is reduced. The amount of irradiation light can be incident on the lower end surface of the tapered light guide member 4. In this case, the light shielding member 32 is used in a direction perpendicular to the longitudinal direction (lateral direction) of the opening 31 and in the vertical direction (both horizontal and oblique directions are not preferable) as shown in FIG. Further, since it is on the xenon light source 2 side, even if the light shielding member 32 is used, the temperature characteristics are not so badly affected. When the amount of light extracted using the light shielding member 32 is reduced, the amount of extracted light can be reduced according to the width dimension d of the light shielding member 32. In this way, by changing the width dimension d of the light shielding member 32, the amount of light extracted from the xenon light source 2 can be adjusted. The light shielding member 32 is a light amount adjusting member, and each wavelength band can be adjusted evenly by using a blackened metal having no wavelength dependency. Further, if the light is adjusted after the light exits from the tapered light guide member 4 by light shielding, or if the light amount adjustment member is inserted to adjust the light amount immediately after exiting the air mass filter 5 for spectrum adjustment, the state of the spectrum is changed. Therefore, it is desirable that the position of the light shielding member 32 be arranged between the reflection member 3a and the position having the least influence on the spectrum and directivity, that is, the opening plate 3b in front of the reflection member 3a.

  Thereby, when adjusting the balance of the amount of light emitted from the light guide members 14 and 14 for surface irradiation, which will be described later, only the light amount is obtained without changing the state of the optical system on the way for the light to enter the light guide member 14. Can be changed. That is, even after fixing the spectrum distribution of the artificial sunlight, the amount of light emitted from the light guide members 14 and 14 can be adjusted without changing the spectrum distribution of the artificial sunlight.

  Here, the light amount adjustment will be further described.

  The xenon light source 2 and the halogen light source 7 and the light guide member 14 are in a one-to-one correspondence, and the xenon light source 2 and the halogen light source 7 are exchanged with each other and the current flowing through the lamp is adjusted. In addition, the amount of light output from the light guide member 14 can be individually and accurately controlled by controlling the amount of light emitted from the halogen light source 7. Similarly, the air mass filter 5, the air mass filter 10 and the light guide member 14 are made to correspond one-to-one, and the air mass filter 5 and the air mass filter 10 are replaced with air mass filters having different light transmittances. By controlling the amount of incident light, the amount of light output from the light guide member 14 can be individually and accurately controlled.

  As described above, the xenon light source 2 and the halogen light source 7 and the light guide member 14 are made to correspond one-to-one, and the air mass filter 5, the air mass filter 10 and the light guide member 14 are made to correspond one-to-one. As described above, the illuminance applied to the irradiated surface can be adjusted without much time compared to the case where the illuminance emitted from the lamp light source is uniformly adjusted over the entire surface by irradiating the irradiated object with a large number of mirrors. It is possible to adjust the illuminance with high accuracy with respect to the irradiation surface of the irradiation object 13, and uniform illuminance with respect to the irradiation surface of the irradiation object 13 can be obtained.

  Next, either one of the first light irradiation device 6 and the second light irradiation device 11 is used, or another one of the light irradiation devices is used, and the lamp light source and the light guide member 14 are in a one-to-one correspondence. In addition, when the air mass filter and the light guide member 14 are in a one-to-one correspondence, the amount of light can be adjusted more easily because the number of light irradiation devices is one. This is shown in FIGS. 5 (a) and 5 (b).

  FIG. 5A and FIG. 5B are perspective views for explaining light amount adjustment of the simulated solar light irradiation device 1 of the first embodiment. 5 (a) and 5 (b), the first light irradiation device 6 and the light mixing unit 12 (wavelength selection mirror) of FIG. 1 are not shown. In the description using FIG. 5A and FIG. 5B only for the light amount adjustment, the first light irradiation device 6 and the light mixing unit 12 (wavelength selection mirror) may be omitted. Similarly, the lamp light source and the reflecting member can have various structures.

  As shown in FIG. 5 (a), each light guide member 14 and the light source lamp 2C are made to correspond one-to-one, and the output light amount from the light source lamp 2C is individually controlled by exchanging the lamps or adjusting the current. be able to. In this case, of course, the amount of light incident on each light guide member 14 can be adjusted by replacing the air mass filter 10C (spectrum adjusting filter) with a different light transmittance.

  Further, as shown in FIG. 5 (b), the light guide members 14 are not divided into a batch irradiation type like the light source lamp 2D, and the light guide members 14 and the air mass filters 10D are made to correspond one-to-one. Alternatively, only the air mass filter 10D (spectrum adjustment filter) may be replaced to control each filter transmittance individually, or a correction filter for the transmittance control may be used as an air mass filter 10D (spectrum adjustment filter). The light quantity incident on the light guide member 14 can also be suppressed and adjusted by adding a light transmission filter separately.

  Instead of the halogen light source 2C and the reflecting member 3C in FIG. 5A, the xenon light source 2, the reflecting member 3a, and the aperture plate 3b in FIG. 2 may be used. Further, a xenon light source, a reflecting member, and an aperture plate may be used instead of the halogen light source 2D and the reflecting member 3D in FIG. Also in this case, as described above, a linear (strip-shaped) light shielding member 32 with a predetermined width d is attached between the opening 31 of the opening plate 3b and the reflecting member, thereby controlling the amount of irradiation and taper. The light can be incident on the lower end surface of the light guide member 4.

  Further, although the light amount decreases particularly at both ends in the case of a long light source as shown in FIG. 5B, as a specific example of the light amount adjustment, the light amount at both ends is increased to make the irradiation light amount uniform over the entire irradiation surface. explain. In this case, either one of the first light irradiation device 6 and the second light irradiation device 11 is used, or another one of the light irradiation devices is used in the case of FIGS. 5A and 5B. Although it is applicable also here, the case of the simulated sunlight irradiation apparatus 1 of FIG. 1 is demonstrated.

  FIG. 6 is a plan view of the simulated solar light irradiation device 1 of FIG.

  The set of the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 is provided as one unit, two sets on the left and right sides, and eight sets are provided in the front-rear direction. As shown in the plan view of FIG. 6, the irradiation light quantity at both ends is set to be smaller than the irradiation light quantity at the other central part side. 13 is increased here so that the amount of light irradiated to 13 becomes uniform. Here, both the light amounts of xenon light and halogen light are increased at both ends, but only halogen light is described. At both ends in the front-rear direction, the halogen light source 7 can be used with a slightly larger output halogen light source 7A.

  The pseudo-sunlight irradiating device 1 includes a halogen light source 7A having a higher output light amount than the halogen light source 7 on both ends in the front-rear direction, a reflecting member 8A having an inner surface that accommodates the halogen light source 7A, and a reflection member. The tapered light guide member 9 that improves the directivity by taking in the halogen emitted light reflected by the inner surface of the member 8A from one end face and propagating the inside, and the halogen emitted light from the other end face of the tapered light guide member 9 There is provided a second light irradiation device 11A having an air mass filter 10 as a second optical filter that performs filtering to produce pseudo-sunlight on the long wavelength side. In this case, the reflecting member 8A, the tapered light guide member 9, and the air mass filter 10 are adapted to the output light amount of the halogen light source 7A, and the reflecting members 8, 8A are the same as long as they are adapted to the output light amount. Also good.

  Further, in the simulated solar light irradiation device 1 of the first embodiment, the set of the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 is unitized and arranged in two right and left sets. For example, 8 sets (one set of 2 units on the left and right; 16 units in total) are arranged in the front-rear direction, but at least the unit has an output light quantity so that the irradiation intensity (light quantity) can be adjusted. By making it possible to replace different lamps or air mass filters 5 (spectrum adjusting filters) having different light transmittances, it is possible to individually adjust the irradiation intensity (light quantity) incident on the light guide member 14. A light source having a different output light quantity may be exchanged by providing a mounting portion (including common) of the halogen light source 7 and the halogen light source 7A having a higher output light quantity than the above.

  Next, as a specific example of the light amount adjustment, a case where the amount of light other than the both ends is reduced to make the amount of irradiated light uniform over the entire irradiated surface will be further described. This specific example is particularly effective in the embodiment of FIG.

  A tapered light guide member that reduces the amount of irradiation light by attaching a light shielding member 32 in a line shape (strip shape) with a predetermined width d between the opening portion 31 of the opening plate 3b and the reflection member at both ends in the front-rear direction. 4 can be made incident on the lower end surface. Thereby, the irradiation light quantity of the center part other than the both end sides can be reduced more than the irradiation light quantity of both end sides, and the irradiation light quantity to the irradiated object 13 can be made uniform on the whole irradiation surface.

  Next, the unitization in which the irradiation area can be changed will be described.

  As shown in FIG. 1, the simulated solar light irradiation apparatus 1 of Embodiment 1 includes two sets of left and right sets of the first light irradiation apparatus 6, the second light irradiation apparatus 11, and the third light irradiation apparatus 15. In the first embodiment, these two sets are arranged side by side with 8 sets (16 units) in the front-rear direction. A set of the first light irradiation device 6, the second light irradiation device 11 and the third light irradiation device 15 can be unitized and manufactured with high accuracy, and the first light irradiation device 6 and the second light irradiation device 11 can be manufactured. And the unit of the 3rd light irradiation apparatus 15 is combined, and it can be set as the magnitude | size of the irradiation surface of the pseudo-sunlight corresponding to the solar cell panel of a desired magnitude | size. Therefore, the left and right two sets of the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 are not limited to 8 sets (16 units) in the front-rear direction. As a result, it is possible to form a unit as an optical system whose irradiation area can be changed. In this case, in the first light irradiation device 6, the xenon light source 2, the reflecting member 3a, and the aperture plate 3b are of a collective irradiation type, and therefore, these are used in common. The xenon light source 2, the reflecting member 3 a, and the aperture plate 3 b can be provided for each tapered light guide member 4.

  Thus, when the set of the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 is unitized as one unit, variation in irradiation intensity of the irradiation surface of one unit is suppressed with high accuracy. Even when a single irradiation surface (unitized unitized) can be combined to make a large irradiation surface, the desired irradiation intensity (light quantity) can be combined and a uniform desired light intensity can be suppressed over the entire large irradiation surface. It can be set as irradiation intensity (light quantity). In short, it is difficult to make the irradiation intensity of a large-area irradiation surface uniform with high accuracy, but if the large-area irradiation surface is divided into multiple parts and the irradiation intensity of the small-area irradiation surface is made uniform with high precision, By simply combining them, the irradiation intensity (light quantity) of the irradiation surface with a large area can be made uniform with high accuracy.

  Accordingly, if the set of the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 is taken as one unit and the irradiation intensity (light quantity) of one unit is manufactured with high accuracy, the solar cell panel The light intensity adjustment of the irradiation intensity (light intensity), which has been conventionally performed over time, can be made unnecessary by simply assembling it according to the size. That is, conventionally, according to the size of the solar cell panel, the irradiation intensity inspection device provided with the reference imaging cell at each important point measures which part of the entire irradiation area of the large area has low irradiation intensity. However, although it is necessary to adjust the irradiation intensity so as to increase the irradiation intensity in the portion where the irradiation intensity is low, it can also be made unnecessary. Further, it is not necessary to adjust the irradiation intensity during regular maintenance. If a unitized light irradiation device is manufactured with high accuracy and no variation, irradiation intensity adjustment is unnecessary and the maintenance is excellent. Conventionally, it took time to adjust the irradiation intensity (light amount adjustment) of the entire irradiation surface.

  Next, a solar cell panel inspection apparatus capable of precisely inspecting the quality of the power generation amount obtained by uniformly irradiating the solar cell panel with simulated sunlight will be described.

  FIG. 7A shows the illuminance with respect to the wavelength of the xenon lamp, and FIG. 7B shows the illuminance with respect to the wavelength of the halogen lamp.

  As shown in FIG. 7A, the emitted light from the xenon lamp has a heat ray component that contributes to the temperature rise, which is less than that of halogen light, and has a spectrum on the short wavelength side of sunlight, and the emitted light from the halogen lamp is As shown in FIG. 7B, there are many heat ray components that contribute to the temperature rise, and the solar light has a long wavelength spectrum. By mixing the emitted lights of the xenon lamp and the halogen lamp through the light mixing unit 12, pseudo-sunlight similar to sunlight can be obtained. The simulated sunlight is guided from the light mixing unit 12 such as a wavelength selection mirror (or wavelength mixing mirror) into the light guide members 14 and 14, and the simulated sunlight is propagated to the irradiated object 13 (solar cell panel). On the other hand, it is possible to uniformly irradiate light with high directivity.

  Thereby, the quality test of the irradiated object 13 (for example, a solar cell panel) is performed by detecting whether or not the solar cell panel as the irradiated object 13 has a power generation amount that exceeds a specified level by the power generation amount detection device. be able to. A solar cell panel inspection device can be obtained by the simulated solar light irradiation device 1 and the power generation amount detection device.

  As described above, according to the first embodiment, the light shielding member 32 as the light amount adjusting member is disposed between the opening 31 of the opening plate 3b as the opening member and the reflecting member 3a, and according to the width size of the light shielding member 32. Therefore, when adjusting the balance of the emitted light from the light guide member 14 for surface irradiation to the irradiated object 13 in order to adjust the amount of emitted light of the spectrum-adjusted light, the light is applied to the light guide member 14 for surface irradiation. Without changing the state of the optical system in the middle of making the light incident, only the amount of light before entering the optical system can be adjusted to adjust only the amount of light applied to the object 13. That is, when irradiating the object 13 with simulated sunlight, only the amount of irradiation light can be adjusted without changing the spectrum distribution even after the spectrum distribution of the irradiation light is fixed.

(Embodiment 2)
In the first embodiment, the case where the third light irradiation devices 15 are arranged on the left and right sides and the light guide members 14 are in contact with each other's end surfaces has been described. However, in the second embodiment, the left and right light guide members 14 are arranged. The case where the right and left 3rd light irradiation apparatuses 15 of the said Embodiment 1 are integrated is demonstrated because they became united.

  That is, in Embodiment 1 described above, as the simulated solar light irradiation device 1, the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 are unitized as one set, and one set is unitized. Two units that are arranged opposite each other in the left-right direction and abut the other end surfaces of the third light guide members 14, 14 of the third light irradiation device 15 are arranged in the front-rear direction according to the size of the irradiated object 13. In the second embodiment, the left side where the first light irradiation device 6, the second light irradiation device 11, and the light mixing unit 12 are respectively disposed as a pseudo-sunlight irradiation device 1 </ b> A described later has been described. Between the set and the right set in which the first light irradiation device 6, the second light irradiation device 11, and the light mixing unit 12 are respectively arranged, the mixed light from the left light mixing unit 12 is taken in from one end face and the inside Propagate A fourth light guide that takes in the mixed light from the right-side light mixing unit 12 from the other end surface and propagates it through the inside thereof to uniformly irradiate the irradiated object 13 with light having high directivity from the flat surface. A case will be described in which the member 14A is provided and unitized as a set, and a plurality of unitized sets are arranged in the front-rear direction according to the size of the irradiated object.

  FIG. 8 is a perspective view schematically showing a configuration example of a main part of the simulated solar light irradiation apparatus according to the second embodiment of the present invention. FIG. 9 is a longitudinal cross-sectional view schematically showing an example of the configuration of the main part of the simulated solar light irradiation apparatus of FIG. In FIGS. 8 and 9, the same reference numerals are given to the structural members that have the same operational effects as the structural members of FIGS. 1 and 2.

  8 and 9, the simulated solar light irradiation device 1A according to the second embodiment has the same configuration as the first light irradiation device 6 and the second light irradiation device 11 (or 11A) according to the first embodiment. The difference is that the left first light irradiation device 6 and the second light irradiation device 11 (or 11A) and the right first light irradiation device 6 and the second light irradiation device 11 (or 11A) are used as one unit. Yes. Moreover, it replaces with the structure of the 3rd light irradiation apparatus 15 of the said Embodiment 1, and uses 15A of 4th light irradiation apparatuses. In short, the simulated sunlight irradiation apparatus 1A according to the second embodiment uses the light guide member 14A in which the left and right light guide members 14 according to the first embodiment are integrated. This is different from the case of 1. Accordingly, the fourth light irradiation device 15A in which the left and right third light irradiation devices 15 are integrated is used.

  The fourth light irradiation device 15A reflects short wavelength xenon emission light from the air mass filter 5 for spectrum adjustment of the left first light irradiation device 6 and also adjusts the spectrum of the second light irradiation device 11 on the left side. The left side of a wavelength selection mirror (or wavelength mixing mirror) or the like as a reflection / transmission means for transmitting pseudo-sunlight similar to sunlight by transmitting long-wavelength halogen emission light from the air mass filter 10 for use The light mixing unit 12 and the right wavelength xenon emission light from the air mass filter 5 for spectrum adjustment of the first light irradiation device 6 on the right side are reflected, and the air mass for spectrum adjustment of the second light irradiation device 11 on the right side is reflected. As reflection / transmission means for obtaining pseudo-sunlight similar to sunlight by mixing light by transmitting the long-wavelength halogen emission light from the filter 10 The right-side light mixing unit 12 such as a wavelength selection mirror (or wavelength mixing mirror) and the pseudo-sunlight that is diffused light from the left-side light mixing unit 12 are taken in from one end surface and propagated through the inside, and the right-side light The pseudo-sunlight that is diffused light from the mixing unit 12 is taken in from the other end surface and propagated inside, and the surface of the irradiated object 13 such as a solar cell panel is uniformly irradiated with light L having high directivity. A light guide member 14A is provided. In this case, in the fourth light irradiation device 15A, the light guide member 14A is integrated.

  Since the light guide member 14A is not divided into two like the light guide members 14 and 14 of the first embodiment, there is no reflection at the end face between them, so that light can be used efficiently. Further, in the case of the piano keyboard system as in the first embodiment, the spectrum is adversely affected if a reflecting mirror is used when reflecting on the other end face. On the other hand, the light guide member 14A does not need to be divided into left and right like the light guide members 14 and 14 of the first embodiment, so that light adjustment at the center end face is eliminated, and the spectral characteristics are good. Can be made. When the area of the light guide member 14A is large, it is a crow. Therefore, it is difficult to manufacture the light guide member 14A in manufacturing.

  Also in this case, as in the case of the first embodiment, as shown in FIGS. 4A and 4B, the reflection member 3a for reflecting the emitted light from the xenon light source 2 and the reflection front side are provided. In addition, a light shielding member 32 as a light amount adjusting member for adjusting the emitted light amount of the spectrum-adjusted light is provided between the aperture plate 3b as the opening member in which the opening portion 31 for extracting the emitted light of the xenon light source 2 is formed. It has been. The light shielding member 32 is stretched over the opposite side of the reflecting member 3a and fixed. The amount of emitted light is adjusted according to the width size of the light shielding member 32. The light shielding member 32 is a light shielding member obtained by blackening a metal having no wavelength dependency.

  Next, the unitization in which the irradiation area can be changed will be described.

  As shown in FIG. 8, the simulated solar light irradiation apparatus 1A according to the second embodiment includes the left and right first light irradiation apparatuses 6, the left and right second light irradiation apparatuses 11, and the fourth light irradiation apparatus 15A as one unit. The In the second embodiment, the one unit is provided in the front-rear direction so as to be arranged with no gaps in 8 sets. The left and right first light irradiation devices 6, the left and right second light irradiation devices 11 and the fourth light irradiation device 15A can be unitized and manufactured with high accuracy as one unit. The device 6, the left and right second light irradiating devices 11 and the fourth light irradiating device 15A are combined in the front-rear direction as one unit, and the size of the irradiation surface of the pseudo sunlight corresponding to the solar cell panel of a desired size is obtained. be able to. Therefore, one unit of the left and right first light irradiation devices 6, the left and right second light irradiation devices 11, and the fourth light irradiation device 15A is not limited to eight units in the front-rear direction. Thereby, it can be set as the unit which can change irradiation area freely. In this case as well, in the first light irradiation device 6, the xenon light source 2, the reflecting member 3a, and the aperture plate 3b are of a collective irradiation type, and these are used in common. The xenon light source 2, the reflecting member 3 a, and the aperture plate 3 b can be provided for each tapered light guide member 4.

  As described above, when the left and right first light irradiation devices 6, the left and right second light irradiation devices 11, and the fourth light irradiation device 15A are unitized as one unit, variation in irradiation intensity of the irradiation surface of one unit is suppressed. The desired irradiation intensity (light quantity) can be accurately obtained, and even when a unitized irradiation surface is combined into a large irradiation surface, variation in irradiation intensity is suppressed uniformly over the entire large irradiation surface. The desired irradiation intensity (light quantity) can be obtained. In short, it is difficult to make the irradiation intensity of a large-area irradiation surface uniform with high accuracy, but if the large-area irradiation surface is divided into multiple parts and the irradiation intensity of the small-area irradiation surface is made uniform with high precision, By simply combining them, the irradiation intensity (light quantity) of the irradiation surface with a large area can be made uniform with high accuracy.

  Accordingly, if the left and right first light irradiation devices 6, the left and right second light irradiation devices 11 and the fourth light irradiation device 15A are set as one unit and the irradiation intensity (light quantity) of one unit is manufactured with high accuracy, By simply assembling according to the size of the battery panel, it is possible to eliminate the need for light intensity adjustment of irradiation intensity (light intensity), which has been conventionally performed over time. That is, conventionally, according to the size of the solar cell panel, the irradiation intensity inspection device provided with the reference imaging cell at each important point measures which part of the entire irradiation area of the large area has low irradiation intensity. However, although it is necessary to adjust the irradiation intensity so as to increase the irradiation intensity in the portion where the irradiation intensity is low, it can also be made unnecessary. Further, it is not necessary to adjust the irradiation intensity during regular maintenance. If a unitized light irradiation device is manufactured with high accuracy and no variation, irradiation intensity adjustment is unnecessary and the maintenance is excellent. Conventionally, it took time to adjust the irradiation intensity (light amount adjustment) of the entire irradiation surface.

  Next, the irradiation intensity adjustment (light quantity adjustment) of the entire irradiation surface will be further described.

  By matching the xenon light source 2 and the halogen light source 7 on the left and right sides with the light guide member 14A on a one-to-one basis, replacing the xenon light source 2 and the halogen light source 7 with each other, and adjusting the current flowing through the lamp, By controlling the amount of light emitted from the xenon light source 2 and the halogen light source 7 on both the left and right sides, the amount of light output from the light guide member 14A can be individually and accurately controlled. Similarly, the left and right air mass filters 5 and 10 and the light guide member 14A are in a one-to-one correspondence, and the left and right air mass filters 5 and 10 are replaced with air mass filters having different light transmittances. By controlling the amount of light incident on the integrated light guide member 14A, the amount of light output from the integrated light guide member 14A can be individually and accurately controlled.

  In this manner, the xenon light source 2 and the halogen light source 7 on the left and right sides and the light guide member 14A are in a one-to-one correspondence, and the air mass filter 5, the air mass filter 10 and the light guide member 14A on the left and right sides are in a one-to-one relationship. Compared to the conventional method of adjusting the illuminance of the emitted light from the lamp light source to the irradiated object uniformly by the many mirrors over the entire surface as in the past, it takes time to adjust the illuminance on the irradiated surface. Therefore, it is possible to adjust the illuminance with high accuracy with respect to the irradiation surface of the irradiation object 13, and uniform illuminance with respect to the irradiation surface of the irradiation object 13 can be obtained.

  Next, using either one of the first light irradiation device 6 and the second light irradiation device 11 or another light irradiation device, a pair of lamp light sources on both the left and right sides and the light guide member 14A are paired. 1 and the air mass filters on both the left and right sides and the light guide member 14A are in a one-to-one correspondence, the light quantity adjustment is further facilitated by the amount of one light irradiation device. This is shown in FIGS. 10 (a) and 10 (b).

  As shown in FIG. 10 (a), the light guide member 14A and the light source lamps 2C on the left and right sides are in one-to-one correspondence, the lamps are exchanged, and the current is adjusted so that Can be controlled individually. In this case, of course, the amount of light incident on the light guide member 14A can be adjusted by replacing the air mass filter 10C (spectrum adjusting filter) with a different light transmittance.

  Further, as shown in FIG. 10B, the light guide member 14A is not divided into a batch irradiation type like the light source lamp 2D, and the light guide members 14 and the right and left air mass filters 10D are in a one-to-one relationship. Correspondingly, only the air mass filters 10D (spectrum adjustment filters) on both the left and right sides may be replaced and the filter transmittances on both the left and right sides may be controlled individually, or a correction filter for transmittance control may be used. By adding each light transmission filter separately from the air mass filter 10D (spectrum adjustment filter) on both sides, the light quantity incident on the light guide member 14A from both sides can be suppressed and adjusted.

  Instead of the halogen light source 2C and the reflecting member 3C in FIG. 10A, the xenon light source 2, the reflecting member 3a, and the aperture plate 3b in FIG. 2 may be used. Further, a xenon light source, a reflecting member 3a, and an aperture plate 3b may be used instead of the halogen light source 2D and the reflecting member 3D in FIG. Also in these cases, as described above, a linear (strip-shaped) light-shielding member 32 having a predetermined width d is attached to the reflecting member 3a, thereby controlling the amount of irradiation light on the lower end surface of the tapered light guide member 4. It can be made incident.

  Further, as a specific example of the light amount adjustment, a case where the light amount on both ends of the plan view is increased to make the irradiation light amount uniform over the entire irradiation surface will be further described. In this case, either one of the first light irradiation device 6 and the second light irradiation device 11 is used, or another one of the light irradiation devices is used in the case of FIGS. 11A and 11B. Although it is applicable also here, the case of the simulated sunlight irradiation apparatus 1 of FIG. 1 is demonstrated.

  FIG. 11 is a plan view of the simulated solar light irradiation apparatus 1A shown in FIG.

  The left and right first light irradiation devices 6, the left and right second light irradiation devices 11 and the middle fourth light irradiation device 15A are provided as one unit, and eight sets are provided in the front-rear direction. As shown in the plan view of FIG. 11, as shown in the plan view of FIG. 11, the amount of irradiation light at both ends is set to the other central portion side. Here, the irradiation light amount is increased so that the irradiation light amount to the irradiated object 13 becomes more uniform than the irradiation light amount. Here, both xenon light and halogen light are increased, but only halogen light will be described. At both ends in the front-rear direction, the halogen light source 7 can be used with a slightly larger output halogen light source 7A.

  The pseudo-sunlight irradiation device 1A includes a halogen light source 7A having a higher output light amount than the halogen light source 7 on both ends in the front-rear direction, a reflecting member 8A having an inner surface that accommodates the halogen light source 7A, and a reflection member. The tapered light guide member 9 that improves the directivity by taking in the halogen emitted light reflected by the inner surface of the member 8A from one end face and propagating the inside, and the halogen emitted light from the other end face of the tapered light guide member 9 It is set as the structure which provided 11A of 2nd left and right 2nd light irradiation apparatus which has the air mass filter 10 as a 2nd optical filter which filters and uses the long wavelength side pseudo sunlight. In this case, the reflecting member 8A, the tapered light guide member 9, and the air mass filter 10 are adapted to the output light amount of the halogen light source 7A, and the reflecting members 8, 8A are the same as long as they are adapted to the output light amount. Also good.

  In the simulated solar light irradiation device 1A of the second embodiment, the left and right second light irradiation devices 11 and the fourth light irradiation device 15A are unitized, and, for example, 8 units are arranged in the front-rear direction. However, at least the unit can replace the lamp with different output light quantity or the air mass filter 5 (spectrum adjustment filter) with different light transmittance so that the irradiation intensity (light quantity) can be adjusted. The irradiation intensity (light quantity) incident on 14A can be individually adjusted. A light source having a different output light quantity may be freely changed by providing a mounting portion between the halogen light source 7 and the halogen light source 7A having a higher output light quantity than the above.

  Next, as a specific example of the light amount adjustment, a case where the amount of light other than the both ends is reduced to make the amount of irradiated light uniform over the entire irradiated surface will be further described. This specific example is particularly effective in the form of FIG.

  A tapered light guide member that reduces the amount of irradiation light by attaching a light shielding member 32 in a line shape (strip shape) with a predetermined width d between the opening portion 31 of the opening plate 3b and the reflection member at both ends in the front-rear direction. 4 can be made incident on the lower end surface. Thereby, the irradiation light quantity of the center part other than the both end sides can be reduced more than the irradiation light quantity of both end sides, and the irradiation light quantity to the to-be-irradiated object 13 can be made uniform on the whole irradiation surface.

  As described above, according to the second embodiment, as in the first embodiment, the light shielding member 32 as the light amount adjusting member is disposed between the opening 31 of the opening plate 3b as the opening member and the reflecting member. When adjusting the balance according to the position of the emitted light from the surface irradiation light guide member 14 </ b> A to the irradiated object 13 in order to adjust the emitted light amount of the spectrum-adjusted light according to the width size of the light shielding member 32. Further, without changing the state of the intermediate optical system until the light is incident on the light guide member 14A for surface irradiation, only the light amount before entering the intermediate optical system is adjusted to irradiate the irradiated object 13 The amount of light can be adjusted. That is, when irradiating the object 13 with simulated sunlight, only the amount of irradiation light can be adjusted without changing the spectrum distribution even after the spectrum distribution of the irradiation light is fixed.

  Further, at least one light source (such as xenon light source 2 or halogen light source 7) and an optical filter as an optical element (such as air mass filter 5 or 10) and the light guide 14 or 14A have a one-to-one correspondence, and are for surface irradiation. Since the irradiation region of the light guide 14 or 14A corresponds to the partial irradiation surface (small irradiation surface) to the irradiated object 13, the amount of light incident on the surface irradiation light guide 14 or 14A is changed. By doing so, the illuminance adjustment of the partial irradiation surface (small irradiation surface) to the irradiation object 13 can be accurately performed. Specifically, by adjusting the output of each lamp as a light source or changing to an air filter having a different transmittance as an optical filter, the illuminance of a partial irradiation surface (small irradiation surface) to the irradiated object 13 Adjustment can be performed with high accuracy. Further, by increasing the light source output corresponding to the light guides 14 or 14A for surface irradiation at both ends in the front-rear direction, it is possible to prevent a decrease in illuminance at the end of the irradiation region of the irradiation surface to the irradiation target 13. Therefore, even if the irradiation surface to the irradiation object 13 becomes wide, it does not take time to adjust the illuminance of the irradiation surface to the irradiation object 13 as in the past, and the irradiation surface to the irradiation object 13 is not affected. Accurate and uniform illuminance can be obtained quickly.

  In addition, light of uniform illuminance is emitted from the light guides 14 and 14A by the pattern (scattering body) of the light guide members 14 and 14A to which pseudo sunlight obtained by spectrally adjusting and mixing xenon light and halogen light is incident. Although the irradiation surface which can irradiate, the irradiation surface irradiated to the solar cell panel as the to-be-irradiated object 13 is virtually divided | segmented into plurality, and each light guide member 14 and 14A is arrange | positioned corresponding to the divided | segmented small irradiation surface, respectively. Therefore, by adjusting only the amount of light emitted from the small irradiation surface to each of the light guide members 14 and 14A, it is possible to easily and reliably quickly and uniformly realize illuminance across the plurality of small irradiation surfaces. If the solar cell panel has a large area, by arranging a plurality of optical systems in accordance with it, irradiation light with uniform illuminance can be created quickly and easily even with a large area. In addition, when changing the lamp, even if there is uneven illuminance due to individual differences in the lamp, it is possible to obtain uniform irradiation light simply by adjusting the amount of light for each unitized optical system. No longer needed.

  Although not described in detail in the first and second embodiments, a light scattering member (pattern) is printed on the light guide members 14 and 14A, and light incident on the light guide members 14 and 14A is scattered. The surface of the solar cell panel as the irradiated object 13 is uniformly irradiated. The scatterers (patterns) of the light guide members 14 and 14A are printed with a pattern such that the illuminance is uniform over the entire irradiated surface. When uneven illuminance occurs on the left and right on the irradiation surface on which the solar cell panel is installed, the uneven illuminance can be easily and reliably adjusted by adjusting the output light quantity for each of the right and left light source optical systems (one unit). Can be reduced. When the light guides 14 and 14 of the left and right light source optical systems are integrated like the light guide 14A, when uneven illuminance occurs on the irradiation surface, the light guides 14A of the integrated light source optical system Therefore, it is difficult to partially adjust the illuminance on the irradiated surface by only adjusting the light amount, compared to the light guides 14 and 14 of the left and right light source optical systems. Further, if the left and right light guides 14 and 14 are integrated as the light guide 14A, uniform light is generated in a wider area, and even if the light enters from both ends of the light guide, uniform light is emitted. Since a printed pattern of a scatterer is required, it is difficult to design the printed pattern. Therefore, the integration of the left and right light guides 14 and 14 has a radiation area that does not hinder the creation of uniform light. There is a need to do. The left and right light guides 14 and 14 are easier to adjust the illuminance unevenness on the irradiated surface than those obtained by integrating them. Furthermore, if the solar cell panel is enlarged, not only a wide range of uniform light can be created by simply arranging a large number of optical systems of the present invention in parallel, but also the amount of light emitted from the light source optical system in each optical system can be adjusted. Even with a large area, the illuminance on the irradiation surface can be adjusted uniformly.

  Although not specifically described in the first embodiment, at least one light source (xenon lamp 2 or halogen lamp 7 or other lamp) having a different emission wavelength band in the simulated sunlight irradiation device 1 and at least one light source. An optical filter (air mass filter 5 or air mass filter 10, other air mass filter) serving as an optical element that gives a predetermined spectral distribution to light emitted from two light sources, and light emitted through the optical element are propagated. A plurality of optical systems each having a light guide 14 or 14A that irradiates the irradiated object 13 with a surface is provided, and at least one light source and optical element and light guide 14 or 14A correspond one-to-one. Incident light guide 14 or 14A by adjusting at least one of at least one light source and optical element That the amount of light, as individually adjustable for each optical system, and is irradiated to the whole irradiated surface of the irradiated object 13 by the light guide body 14 or 14A of the plurality of optical systems. Thereby, even if the irradiation surface becomes wide, the object of the present invention capable of obtaining a uniform and accurate illuminance on the irradiation surface without requiring time for adjusting the illuminance on the irradiation surface can be achieved. it can.

  In the first embodiment, as shown in FIG. 2, the optical system includes a first light source (xenon lamp 2) and light having enhanced directivity by taking light emitted from the first light source from one end surface. A first light guide member (tapered light guide member 4) that emits from the end surface and a first optical filter (air mass filter 5) that adjusts the spectrum of light emitted from the other end surface of the first light guide member. A light irradiating device 6, a second light source (halogen lamp 7), and a second light guide member (taper guide) that takes out light emitted from the second light source from one end face and emits light with enhanced directivity from the other end face. A second light irradiating device 11 having a light member 9) and a second optical filter for adjusting the spectrum of light emitted from the other end face of the second light guide member; Mixing the light from the two-light irradiation device 11 into sunlight The light mixing member 12 that obtains similar simulated sunlight, and the simulated sunlight from the light mixing member 12 is taken in from one end surface and propagated through the inside, and light having high directivity with respect to the irradiated object 13 is obtained from a flat surface. The case where the 3rd light irradiation apparatus 15 which has the 3rd light guide member (light guide member 14) which uniformly irradiates a surface was provided was demonstrated. The optical system is not limited to this, and as shown in FIG. 9, the optical system includes a first light source (xenon lamp 2) and a first optical filter (air mass) as the optical element that adjusts the spectrum of light emitted from the first light source. A first light irradiation device 6 having a filter 5), a second light source (halogen lamp 7), and a second optical filter (air mass filter 10) as an optical element for adjusting the spectrum of light emitted from the second light source. ), A light mixing member 12 that obtains pseudo sunlight similar to sunlight by mixing the light from the first light irradiation device 6 and the light from the second light irradiation device 11, A third light guide member 14 that takes in the pseudo-sunlight from the light mixing member 12 from one end surface and propagates the interior thereof to uniformly irradiate the irradiated object 13 with light having high directivity from a flat surface; 3rd light irradiation apparatus 1 which has Door may be provided. Here, compared with the case of the said Embodiment 1, there is only a 1st light guide member (taper light guide member 4) and a 2nd light guide member (taper light guide member 9).

  In the first embodiment, the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 are set as one unit, and the units are arranged to face each other in the left-right direction. A plurality of two units in which the other end surfaces of the third light guide member (light guide member 14) are in contact with each other are arranged in the front-rear direction according to the size of the irradiated object 13. On the other hand, in the said Embodiment 2, the left set which has arrange | positioned the 1st light irradiation apparatus 6, the 2nd light irradiation apparatus 11, and the light mixing part 12, the 1st light irradiation apparatus 6, the 2nd light irradiation apparatus 11, and The mixed light from the left light mixing unit 12 is taken in from one end face to propagate through the right side set where the light mixing unit 12 is arranged, and the mixed light from the right light mixing unit 12 is transmitted to the other end face. The fourth light guide member (light guide member 14A) is provided, which propagates the light from the inside and propagates the inside thereof to uniformly irradiate the irradiated object 13 with light having a high directivity from the flat surface. Depending on the size of the irradiated object 13, a plurality of one unit are arranged in the front-rear direction.

  Next, the optical system includes a first light source (xenon lamp 2 or halogen lamp 7 and other lamps) and light having enhanced directivity by taking light emitted from the first light source from one end surface. Light guide member (taper light guide member 4 or taper light guide member 9 or other taper light guide member) emitted from the light source, and an optical filter (air mass filter) for adjusting the spectrum of light emitted from the other end surface of the light guide member 5 or the air mass filter 10 and other air mass filters), and artificial sunlight similar to the sunlight from the light irradiation device is taken in from one end face and propagated through the inside thereof to be irradiated 13 In contrast, a light guide member 14 or 14a for surface irradiation that uniformly irradiates light with high directivity from a flat surface may be provided. This light guide member (taper light guide member 4 or taper light guide member 9, other taper light guide members) may not be used. That is, the optical system includes a first light source (xenon lamp 2 or halogen lamp 7 or other lamp) and an optical filter as an optical filter that adjusts the spectrum of light emitted from the first light source. The device and the surface irradiation guide that takes in the pseudo-sunlight similar to the sunlight from this light irradiation device from one end surface and propagates it inside the surface to uniformly irradiate the light from the flat surface to the object to be irradiated. An optical member may be provided.

  Also in the above case, as described above, the optical system having the light irradiation device and the light guide member for surface irradiation is set as one unit as in the first embodiment, and the units are arranged to face each other in the left-right direction. Thus, a plurality of two units in which the other end faces of the light guide member for surface irradiation are in contact with each other are arranged in the front-rear direction according to the size of the irradiated object 13. Further, as in the second embodiment, the light irradiation devices are arranged on the left and right sides, and the light from the left optical filter is taken in from one end face and propagated through the inside, and the light from the right optical filter is sent to the other end face. Is provided with a surface irradiation light guide member 14 or 14a for uniformly irradiating the irradiated object 13 with light from a flat surface. Depending on the size, a plurality of one unit may be arranged in the front-rear direction.

  Although not particularly described in the second embodiment, a line-shaped (strip-shaped) light-shielding member 32 with a predetermined width d is attached to the reflecting member 3a, or the opening 31 is provided, as in the first embodiment. By adjusting the size of itself, when adjusting the balance of the amount of light emitted from the light guide member 14A for surface irradiation, the state of the optical system in the middle for allowing light to enter the light guide member 14A from both sides is changed. Without changing it, only the amount of light can be changed. That is, even after the spectrum distribution of the pseudo sunlight is fixed, the amount of light emitted from the light guide member 14A can be adjusted without changing the spectrum distribution of the pseudo sunlight.

  In the first and second embodiments, a plurality of sets of the first light irradiation device 6, the second light irradiation device 11, and the third light irradiation device 15 or 15 </ b> A are provided, and the first tapered light guide members 4 are connected to each other. And the second taper light guide members 9 are arranged adjacent to each other, and a light shielding member is disposed between the adjacent first taper light guide members 4 and / or between the adjacent second taper light guide members 9. However, the present invention is not limited to this, and artificial sunlight from either one of the first light irradiation device 6 and the second light irradiation device 11 is taken in from one end face and the inside It is good also as a pseudo-sunlight irradiation apparatus which has the light guide member 14 or 14A for surface irradiation which propagates the light and uniformly irradiates light with high directivity with respect to the to-be-irradiated object 3 from a flat surface.

  As mentioned above, although this invention was illustrated using preferable Embodiment 1, 2 of this invention, this invention should not be limited and limited to this Embodiment 1,2. It is understood that the scope of the present invention should be construed only by the claims. It is understood that those skilled in the art can implement an equivalent range based on the description of the present invention and the common general technical knowledge, from the description of specific preferred embodiments 1 and 2 of the present invention. Patents, patent applications, and documents cited herein should be incorporated by reference in their entirety, as if the contents themselves were specifically described herein. Understood.

  The present invention relates to a light irradiating device for irradiating an object to be irradiated with highly directional light, and a pseudo sunlight irradiating device for irradiating an object to be irradiated with pseudo sunlight using the light irradiating device, In the field of the solar cell panel inspection apparatus that performs pass / fail determination by measuring the output characteristics of the solar battery panel using the simulated solar light irradiation device, a light amount adjusting member is arranged for each opening from which the emitted light of the first light source is extracted. Since the light emission adjustment of the spectrum-adjusted light is performed by the light quantity adjustment member, when adjusting the balance depending on the position of the outgoing light from the light guide member for surface irradiation to the irradiated object, Only the amount of irradiation light can be adjusted without changing the state of the optical system halfway until light is incident on the light guide member. That is, when irradiating the object with simulated sunlight, only the amount of irradiation light can be adjusted without changing the spectrum distribution even after fixing the spectrum distribution of the irradiation light.

DESCRIPTION OF SYMBOLS 1, 1A Pseudo sunlight irradiation apparatus 2 Xenon light source 3a Reflective member 3b Opening plate 31 Opening part 32 Light shielding member 4 Tapered light guide member 5 Air mass filter (1st optical filter; Spectrum adjustment filter)
6 First light irradiation device 7, 7A, 2C, 2D Halogen light source 8, 8A, 3C, 3D Reflective member 9, 9C, 9D Tapered light guide member 10, 10C, 10D Air mass filter (second optical filter; spectrum adjustment filter) )
11 2nd light irradiation apparatus 12 Light mixing part (wavelength selection mirror)
13 Object to be irradiated (solar cell panel)
14, 14A Light guide member 15 3rd light irradiation apparatus 15A 4th light irradiation apparatus

Claims (9)

  A first light source, a first reflecting member for reflecting the light emitted from the first light source, and an opening for taking out the light emitted from the light source are formed on the reflection front side of the first reflecting member. An opening member, a first light guide member that takes in light emitted from the opening of the opening member from one end face, and emits light with enhanced directivity from the other end face, and from the other end face of the first light guide member A first optical filter that adjusts the spectrum of the emitted light, and a light amount adjusting member is disposed for each opening, and the emitted light amount of the light whose spectrum is adjusted by the light amount adjusting member is adjusted. Irradiation device.   The light irradiation device according to claim 1, wherein the light amount adjustment member is disposed between an opening of the opening member and the reflection member.   The light amount adjusting member is a light shielding member having a predetermined width that is stretched over and fixed to the opposite side of the reflecting member, and the emitted light amount adjustment is performed according to a width size of the predetermined width. Light irradiation device.   The light irradiation apparatus according to claim 2, wherein the light amount adjustment member is a light shielding member obtained by blackening a metal having no wavelength dependency.   The artificial sunlight from the light irradiation device according to any one of claims 1 to 4 is taken in from one end surface and propagated in the inside thereof, so that light is irradiated from the flat surface to the irradiated object from the flat surface. A pseudo-sunlight irradiation device having a light member. A first light irradiation device which is the light irradiation device according to claim 1;
A second light source, a second reflecting member that reflects light emitted from the second light source, and light emitted from the second reflecting member from one end face to emit light having enhanced directivity from the other end face A second light irradiation device comprising: a second light guide member; and a second optical filter that adjusts a spectrum of light emitted from the other end surface of the second light guide member;
A light mixing member that obtains pseudo sunlight similar to sunlight by mixing light from the first light irradiation device and light from the second light irradiation device, and one end face of the pseudo sunlight from the light mixing member Pseudo-sunlight provided with a plurality of sets of third light irradiation devices each having a third light guide member that takes in light from the light source and propagates through the inside thereof to uniformly irradiate the irradiated object with light from a flat surface. Irradiation device.   The optical system having the first light irradiation device, the second light irradiation device, and the third light irradiation device is defined as one unit, and the one unit is disposed to face each other in the left-right direction, and the third light irradiation device The simulated solar light irradiation device according to claim 6, wherein a plurality of two units in which the other end surfaces of the third light guide member are in contact with each other are arranged in the front-rear direction according to the size of the irradiated object.   A left set in which the first light irradiation device, the second light irradiation device, and the light mixing unit are disposed, and a right set in which the first light irradiation device, the second light irradiation device, and the light mixing unit are disposed. In between, the mixed light from the left light mixing part is taken in from one end face and propagated in the inside, and the mixed light from the right light mixing part is taken in from the other end face and propagated through the inside to the irradiated object On the other hand, a fourth light guide member that uniformly irradiates light from a flat surface is provided in place of the third light guide member, and this unit is set as one unit, and the one unit is arranged back and forth according to the size of the irradiated object. The simulated solar light irradiation device according to claim 6, wherein a plurality of the solar light irradiation devices are arranged in a direction.   The inspection apparatus for solar cell panels which performs the quality determination by measuring the output characteristic of a solar cell panel using the simulated solar light irradiation apparatus in any one of Claims 5-8.