JPH05249406A - Method and device for collecting light - Google Patents

Abstract

PURPOSE:To provide a method and a device for collecting light capable of dividing and collecting a infrared ray being heat source used for heating, drying or the like, a ultraviolet ray used for sterelization, disinfection or the like, not to mentioned a visible ray used for lighting from a solor ray effectively. CONSTITUTION:The solor lay which is made incident on the inside of a case 1 is reflected so as to focus into a prescribed position by a parabolic surface reflecter 3 and a reflected ray is divided into the infrared ray (b), the visible ray (a) and the ultraviolet ray (c) by a main filter reflecter 4 or a filter reflecter respectively, and photodetecters 5 and 6 corresponding to the rays collect the rays. The solor ray is effectively used by dividing into the infrared ray (b), the visible ray (c) and the ultraviolet ray (c) from the irradiating solor ray and collecting the rays respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a daylighting method and apparatus capable of effectively taking in sunlight and utilizing it for various purposes.

[0002]

2. Description of the Related Art Conventionally, by utilizing chromatic aberration generated when condensing sunlight with a Fresnel lens, infrared rays, heat rays, and ultraviolet rays are cut off, and only visible rays are taken out to illuminate or use a daylighting device for sunbathing. The one shown in FIG. 4 is known.

When sunlight is passed through a Fresnel lens 20 having a predetermined unevenness on its surface, the condensing position is different due to its chromatic aberration, so that visible light rays a, infrared rays b,
Since the light is separated into the ultraviolet rays c and the like, the light receiving member 21 such as an optical fiber is used for gathering light, of which the focus is the visible light a.

[0004] However, the above-mentioned device is inefficient because it can not be used by extracting other sunlight components because it uses only visible light used for illumination etc. It was a thing.

Therefore, in the industry, not only visible rays used for illumination and the like among sunlight,
Infrared rays that are heat sources used for heating and drying, sterilization,
There has been a strong demand for the appearance of a daylighting device capable of effectively dividing and collecting ultraviolet rays used for disinfection and the like.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned needs, and reflects the sunlight taken into the frame body by a parabolic reflector so as to have a focus at a predetermined position. The reflected light is split into infrared rays, visible rays, and ultraviolet rays by the main filter reflector or the filter reflector, and the light receiver is made to correspond to each of these rays to be used for illumination from sunlight. It is possible to provide a daylighting method and device capable of effectively dividing and collecting not only visible light rays but also infrared rays which are heat sources used for heating and drying, and ultraviolet rays used for sterilization and disinfection. Has a purpose.

[0007]

The means of the present invention for achieving the above-mentioned object is to reflect the sunlight taken into the frame body by a parabolic reflector so as to have a focus at a predetermined position, The reflected light is split into infrared rays, visible rays and ultraviolet rays by the main filter reflector, and the infrared rays that have passed through the main filter reflector are collected by an infrared ray receiver at its focal point, and the reflected visible rays and ultraviolet rays are reflected. Was illuminated by a double photoreceptor at its focal point,
There is a lighting method.

Further, the sunlight is once reflected by the main filter reflector so that all the light is reflected through the filter reflector.
At the focal point, infrared rays, visible rays, and ultraviolet rays are collected by the respective light receiving bodies.

Further, the separated visible light and ultraviolet light are again separated by the filter reflector, and at the focal point thereof, the visible light receiver and the ultraviolet light receiver collect light.

Further, the structure adopted in the above method has a frame having openings on both sides, a transparent plate attached to one side opening of the frame to take in sunlight, and a frame of the frame. A parabolic reflector that is attached to the opening on the other side and reflects the light incident from the transparent plate to the transparent plate side; The main filter reflector that reflects the visible light and the ultraviolet light collected by the object surface reflector so as to be collected on the center of the other side of the opening side of the frame, and the transparent member of the frame. An infrared receiver provided outside the flexible plate to receive the infrared rays condensed by the parabolic reflector, and a visible light and an ultraviolet ray provided at the center of the opening on the other side of the frame. In the configuration of a daylighting device including a plurality of light receivers.

[0011]

The present invention configured as described above has the following operations. When sunlight is taken in through the opening on one side of the frame, the light passes through a transparent plate and enters the frame. Parabolic reflection attached to the opening on the other side of the frame. The light enters the body and is reflected and condensed again on the side of the transparent plate.

This light is collected by an infrared ray receiver provided outside the frame and used as a heat source for heating and drying.

The main filter reflector provided at the inner middle portion of the permeable plate allows visible rays and ultraviolet rays reflected from the parabolic reflector to pass through the opening on the other side of the frame. When the light is focused on the photoreceptor in the central part of the side, visible light that becomes a light source and sterilizes through the photoreceptor to the desired location.
It is possible to transmit ultraviolet rays that have a disinfecting effect.

Further, if a filter reflector is provided at the center of the side of the opening on the other side of the frame, visible light and ultraviolet light are separated and purified and taken out by the first and visible light receivers, respectively. These rays are used for.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, each embodiment of the lighting method and device according to the present invention will be described with reference to the drawings.

In FIGS. 1 to 3, A is a daylighting device, which takes in sunlight to make infrared rays b, visible rays a and ultraviolet rays c.
1 is divided into three parts, visible light a, infrared light b, and ultraviolet light c, and the light rays are effectively utilized according to their respective characteristics. In the above, the frame 1 is basically composed of the frame 1, the transparent plate 2, the parabolic reflector 3, the main filter reflector 4, the infrared light receiver 5, and the double light receiver 6.

In the second embodiment shown in FIG. 2, the frame 1, the transparent plate 2, the parabolic reflector 3, the main filter reflector 4, the infrared light receiver 5, and the filter reflector. It basically comprises a body 7, an ultraviolet light receiver 8 and a visible light light receiver 9.

Further, in the third embodiment shown in FIG. 3, the frame 1, the transparent plate 2, the parabolic reflector 3, the main filter reflector 4, the infrared receiver 5, and the primary filter. It basically comprises a reflector 7a, a secondary filter reflector 7b, an ultraviolet light receiver 8 and a visible light light receiver 9.

The frame 1 in the first embodiment is a cylinder made of metal such as aluminum or synthetic resin, or
It is formed in a rectangular tube, and the inside is hollow, and openings 10 and 11 are provided on one side and the other side thereof.

The permeable plate 2 is attached so as to close the opening 10 on one side of the frame 1 so as to take in sunlight from this, so that the light absorption loss is small and the incidence of ultraviolet rays b is small. Substrates such as quartz glass or various kinds of glass, metals, crystals, semiconductors, synthetic resins, etc. that do not block light are used.

The parabolic reflector 3 described above reflects the rays of light incident on the transparent plate 2 in parallel to the optical axis by the parabolic surface, and geometrically faces the transparent plate 2 side. The light is focused on the target focal point, and aluminum is vapor-deposited or coated on the surface.

The main filter reflector 4 is provided inside the transparent plate 2, that is, in the middle of the transparent plate 2 inside the frame 1, and the parabolic reflector 3 is provided.
The visible light a, the infrared light b, and the ultraviolet light c collected by are received.

The structure is such that vapor deposition is performed on the surface of the transparent plate 2 by a conventional method, that is, on the surface of the substrate of the transparent plate 2,
Dielectric film or metal film is vacuum-deposited to form a flat mirror surface in one or more layers, and the refractive index, thickness, and number of layers of the film are changed to utilize light interference / absorption. It transmits or reflects light in a specific wavelength range, for example, visible light a, infrared light b, ultraviolet light c, or the like.

Therefore, in the main filter reflector 4 used in the first and second embodiments, the infrared ray b having a long wavelength is transmitted and reaches the infrared light receiving body 5 which will be described later, and the visible ray having a shorter wavelength than the infrared ray b. a and ultraviolet rays c
Is for condensing light onto the central portion of the frame 1 on the side of the opening 11 on the other side, and the dielectric film and the metal film to be deposited effectively transmit infrared rays and reflect other light rays. Set to thickness.

The above-mentioned main filter reflector 4 is
The surface is not limited to a flat surface, and it may be a curved body having a convex surface or a concave surface depending on the change in the focal length of the reflected light. It may be attached by adhesion or the like.

The infrared light receiver 5 is provided outside the transparent plate 2, that is, outside the frame 1, and the infrared light b collected by the parabolic reflector 3 is reflected by the reflector. 4 is used, and an optical fiber or the like having excellent heat resistance is used, and the heat ray is applied to a heat absorber to be used as a heat source or used for artificial drying.

The multi-photoreceptor 6 has a predetermined opening 11 formed at the center of the other side of the frame 1 on the side of the opening 11, that is, at the center of the parabolic reflector 3. Department
The optical fiber made of quartz or the like, which is provided at 11 to receive the visible light a and the ultraviolet light c and has a small light absorption loss, is adopted in accordance with the focal position of these light beams.
It is provided inside or outside the frame 1.

Next, the operation of the first embodiment device will be described.

As shown in FIG. 1, when one side opening 10 of the frame 1 is made to face the sun and sunlight is taken in through this opening 10, the light passes through the transparent plate 2. Light is incident in parallel into the frame 1 without causing a loss of light absorption.

Then, the light incident on the parabolic reflector 3 attached to the opening 11 on the other side of the frame 1 is reflected again to the side of the transparent plate 2 according to its concave surface.

Then, of this light, the infrared rays b pass through the transparent plate 2 and also pass through the main filter reflector 4 composed of a dielectric film or a metal film layer deposited on the inner surface thereof. , Is focused on a geometrical focus outside the frame 1.

Therefore, the infrared rays are collected by the infrared light receiver 5 such as an optical fiber provided outside the frame 1 and used as a heat source for drying, heating, heating, or the like.

The visible light rays a and the ultraviolet rays c reflected from the parabolic reflector 3 are the main filter reflector 4
The light is reflected again without passing through, and is focused on the light receiving body 6 such as an optical fiber provided at the central portion on the side of the opening 11 on the other side of the frame 1 and corresponding to the geometric focus position.

The visible light incident on the light receiving body 6 such as an optical fiber is guided to a desired place in a room or the like to serve as a light source for illumination or a sun bath, and ultraviolet rays are used for a sterilization or disinfection facility.

In the second embodiment shown in FIG. 2, the visible light a and the ultraviolet light c divided in the first embodiment are further divided and used respectively. Of these, the frame 1
Since the transparent plate 2, the parabolic reflector 3, the main filter reflector 4, and the infrared light receiver 5 are substantially the same as those in the first embodiment, detailed description thereof will be omitted. ..

The filter reflector 7 described above is
Visible light rays a and ultraviolet rays c reflected by the main filter reflector 4 are further divided individually, and a dielectric film, a metal film or the like is vapor-deposited by a conventional method on the substrate surface to form a mirror surface or a mirror surface thereof. It is formed in a layer and reflects the ultraviolet rays c to the side of its geometrical focal point and is taken out by the ultraviolet ray receiver 8, while transmitting the visible light ray a and transmitting the visible light ray a at its focal point. Take out by.

The above-mentioned ultraviolet light receiving member 8 and visible light receiving member 9 use optical fibers. Since ultraviolet light c has a large light absorption loss, quartz is used, and visible light light a has a relatively small light absorption attenuation. Inexpensive materials such as synthetic resins can be used.

The light rays a and c taken out by the ultraviolet light receiving body 8 and the visible light receiving body 9 are used in accordance with their respective characteristics as in the first embodiment.

In the third embodiment shown in FIG. 3, all the sunlight reflected by the parabolic reflector 3 is reflected again by the main filter reflector 4 toward the other side opening 11 side of the frame 1. After that, the visible light a, the infrared light b, and the ultraviolet light c are divided into three on the side of the opening 11 on the other side. Of these, the frame 1, the transparent plate 2, the parabolic reflector 3, Also, since the infrared light receiving body 5, the ultraviolet light receiving body 8 and the visible light receiving body 9 used for daylighting are almost the same as those in the first embodiment, detailed description thereof will be omitted.

Then, the above-mentioned main filter reflector 4
Is used to reflect the total light of sunlight from the parabolic reflector 3. As described above, the aluminum vapor deposition film applied to the surface of the parabolic reflector makes it possible to reflect the total light.

Further, the above-mentioned primary filter reflector 7a
Is for dividing the infrared ray b reflected from the main filter reflector 4 into visible rays a and ultraviolet rays c into two parts. The substrate surface is provided with a dielectric film or a metal film, and the mirror surface thereof is formed into a single layer or multiple layers. It is formed at the center of the side of the opening 11 on the other side of the frame 1 and reflects the ultraviolet rays c to the side of its geometrical focus and takes them out by the ultraviolet ray receiver 8. , The visible light a and the infrared light b are transmitted and sent to the next secondary filter reflector 7b.

The secondary filter reflector 7b is arranged adjacent to the primary filter reflector 7a to separate visible light rays a and infrared rays b transmitted through the primary filter reflector 7a into a dielectric layer on the substrate surface. Apply a body film or metal film,
The visible light a is reflected to the side of its geometrical focus and is extracted by the visible light receiver 9, while the infrared light b is transmitted and is collected by the ultraviolet light receiver 8.
The respective light rays a, b, and c are used according to their individual characteristics as in the first embodiment described above.

[0043]

INDUSTRIAL APPLICABILITY As described above, the daylighting method and device of the present invention can separate infrared rays, visible rays, and further ultraviolet rays from the sunlight to be irradiated, and take them out respectively. It has a special effect that the light can be effectively divided and used.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of a daylighting method and device according to the present invention.

FIG. 2 is an explanatory diagram showing a second embodiment of a daylighting method and device according to the present invention.

FIG. 3 is an explanatory diagram showing a third embodiment of a daylighting method and device according to the present invention.

FIG. 4 is an explanatory diagram showing a conventional light collecting device.

[Explanation of symbols]

 1 Frame 2 Permeable Plate 3 Parabolic Reflector 4 Main Filter Reflector (Reflector in Fig. 3) 5 Infrared Receiver 6 Double Photoreceptor 7 Filter Reflector 7a Primary Filter Reflector 7b Secondary Filter Reflector 8 Ultraviolet light receiver 9 Visible light receiver a Visible light b Infrared c Ultraviolet light

Claims (6)

[Claims] 1. A parabolic reflector reflects sunlight taken into the frame body so that it has a focal point at a predetermined position, and the main filter reflector reflects the reflected light into infrared rays and visible rays and ultraviolet rays. Infrared rays that have been spectrally separated and have passed through the main filter reflector are collected by an infrared light receiver at a focal portion thereof, and the reflected visible light and ultraviolet rays are collected by a plurality of light receivers at a focal portion thereof. Method. 2. The parabolic reflector reflects sunlight taken into the frame body so that it has a focal point at a predetermined position, and the main filter reflector reflects the reflected light into infrared rays and visible rays and ultraviolet rays. Infrared rays that have been spectrally separated and have passed through the main filter reflector are collected by the infrared ray receiver at the focal point thereof, and the reflected visible rays and ultraviolet rays are passed through the filter reflector and at the focal point of the visible ray photoreceptor and ultraviolet rays. A daylighting method characterized in that the light is received by a light receiver. 3. The parabolic reflector reflects sunlight taken into the frame body so that it has a focal point at a predetermined position, and the main filter reflector reflects the reflected light to ultraviolet rays, visible rays, and infrared rays. Then, the reflected ultraviolet rays, visible rays, and infrared rays are collected through the primary and secondary filter reflectors at the focal point thereof by the ultraviolet ray receivers, visible ray photoreceptors, and infrared ray photoreceptors. How to illuminate. 4. A frame having openings on both sides, a permeable plate that is attached to an opening on one side of the frame to take in sunlight, and is attached to an opening on the other side of the frame, A parabolic reflector that reflects light incident from the transparent plate to the side of the transparent plate, and a parabolic reflector that is provided in an intermediate portion inside the transparent plate and is condensed by the parabolic reflector. Visible rays and ultraviolet rays, a main filter reflector that reflects so that the visible light and ultraviolet rays are condensed to the central portion of the opening side of the other side,
An infrared light receiver provided on the outside of the transparent plate in the frame to receive infrared light focused by the parabolic reflector;
A daylighting device, comprising: a double light-receiving body which is provided at a central portion of the frame on the side of the opening on the other side and receives the visible light and the ultraviolet light. 5. A frame having openings on both sides, a permeable plate that is attached to an opening on one side of the frame to take in sunlight, and is attached to an opening on the other side of the frame, A parabolic reflector that reflects light incident from the transparent plate to the side of the transparent plate, and a parabolic reflector that is provided in an intermediate portion inside the transparent plate and is condensed by the parabolic reflector. Visible rays and ultraviolet rays, a main filter reflector that reflects so that the visible light and ultraviolet rays are condensed to the central portion of the opening side of the other side,
An infrared receiver provided outside the permeable plate of the frame body to receive infrared rays collected by the parabolic reflector, and an infrared receiver provided at the center of the other side opening of the frame body. A filter reflector that separates ultraviolet rays and visible light, an ultraviolet light receiver that is provided on one side of the filter reflector to receive ultraviolet light, and a visible light receiver that receives the visible light that has passed through the filter reflector. And a lighting device. 6. A frame having openings on both sides, a permeable plate that is attached to an opening on one side of the frame to take in sunlight, and is attached to an opening on the other side of the frame, A parabolic reflector that reflects light incident from the transparent plate to the side of the transparent plate, and a parabolic reflector that is provided in an intermediate portion inside the transparent plate and is condensed by the parabolic reflector. Infrared rays, visible rays, and ultraviolet rays are reflected so that the main filter reflector reflects the infrared rays so that the infrared rays, the visible rays, and the ultraviolet rays are condensed to the central portion on the opening side on the other side in the frame, and the central portion on the opening side on the other side in the frame. A primary filter reflector that disperses the ultraviolet light, visible light, and infrared light, and an ultraviolet light receiver that receives the ultraviolet light provided corresponding to one side of the primary filter reflector, and is adjacent to the primary filter reflector. Visible through the primary filter reflector A secondary filter reflector that separates light rays and infrared rays, a visible light receiver that receives visible light provided corresponding to one side of the secondary filter reflector, and infrared rays that have passed through the secondary filter reflector. A daylighting device comprising an infrared ray receiving body for receiving the infrared ray receiving body.