JPS6180114A - Artificial light source device - Google Patents

Abstract

PURPOSE:To introduce efficiently released light into a photoconductor cable and other photoconductor by forming the photodetecting end face of the photoconductor cable into a recessed face inclined relative to the optical axis and forming a filter film which reflects the specific light component to the recessed face. CONSTITUTION:The parallel rays from an artificial light source 1 are emitted from a photoconductor rod 3 and is introduced into the photoconductor cable 3. The photodetecting end 4a thereof is the concave face slightly inclined relative to the optical axis. The visible light is transmitted through the filter film 5 formed on the end face 4a and is introduced into the cable 4. UV and IR rays are reflected by said film and are introduced into the photoconductor 6 after the rays are condensed. The separation of the specific light component and the efficient introduction of only the light component having good quality into the cable 4 are thus made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to an artificial light source device, and more specifically, it converts light from a light source lamp into a flat f7 beam using a parabolic reflector or the like, Relating to an artificial light source device in which this parallel light beam is once introduced into a light guide rond, the output light from the light guide rond is introduced into a light guide cable, and the output light from the light guide cable is used as a light source, In particular, the light-receiving end of the optical conductor cable is inclined with respect to the traveling direction of light, and a filter film is provided on the light-receiving end surface to transmit a predetermined light component and reflect another predetermined light component. In an artificial light source device in which light components are separated by a filter film, the light receiving end of the light guide cable is formed into a concave surface so that the parallel light beams can be efficiently introduced into the light guide cable.

−■ In general, it is possible to use light bulbs to illuminate any location, but lighting in explosive atmospheres, lighting underwater, etc. has the risk of explosion or electrical leakage, so these Electrical equipment used in these locations had to be explosion-proof or waterproof. However, Tora's explosion-proof type,
Waterproof equipment is large, heavy, and expensive.
Moreover, it could not be completely explosion-proof or waterproof. In addition, the applicant has previously proposed a photosynthetic reaction device for cultivating chlorella, etc., a plant promotion cultivation device in a carbon dioxide-containing atmosphere, etc., but these devices do not allow the photosynthetic reaction to take place. It requires light, and its light source does not include heat or ultraviolet rays.

Furthermore, a large number of small point light sources are required. In order to obtain such a light source, the applicant first introduced sunlight focused by a lens into a light guide cable consisting of a large number of optical fibers, and then installed a chlorella culture device through the light guide cable. Alternatively, various proposals have been made regarding the use of the light emitted from the optical fiber as a point light source by guiding it to a photosynthesis reaction device such as a plant promoting cultivation device. However, if the photosynthetic reaction device is made to perform photosynthetic reactions even at night, artificial light can be used instead of sunlight as a light source for large trees. It is necessary to introduce the light into a light guide cable and guide it to the photosynthesis reaction device through the light guide cable, and to switch between a sunlight source and an artificial light source, and
In some cases, it is necessary to use light from both of these light sources in combination.

FIG. 2 is a diagram showing an example of an artificial light source device previously proposed by the present applicant. In the figure, 1 is an artificial light source lamp, and 2 is a device for converting the light from the artificial light source lamp 1 into parallel light and reflecting it. For example, a parabolic reflecting mirror 3, a light guide rod 3 for receiving parallel light beams from the reflecting mirror 2, and a light guide cable 4 consisting of a large number of optical fibers 41+42+... as shown in the figure. First, the light from the artificial light source lamp 1 is made into parallel light beams by a reflecting mirror 2, and the parallel light beams are once introduced into a light guide rod 3, and then introduced into a light guide cable 11 via the light guide rod 3. When the light from the artificial light source lamp l is introduced into the light guide cable through the light guide rod, the light guide rod cuts out heat rays and ultraviolet rays from the light from the artificial light source.
- and moreover, light can be efficiently introduced into the optical conductor cable.

Figure 3 is a lecture drawing for explaining another example of the artificial light source device proposed earlier by the applicant. It has the same reference number as . Therefore, in this example, the optical conductor cable 4
The light-receiving end of the light is slightly inclined with respect to the direction of light propagation.
Further, a filter film, for example, a gold vapor deposited film 5, which transmits visible light and reflects ultraviolet rays, is provided on this inclined surface. Therefore, among the parallel light beams from the light guide rod 3, ultraviolet rays and infrared rays are reflected by the filter film 5 and taken out.
Only visible light is introduced into the light guide cable 4. In this example, the light-receiving end of the optical conductor cable 4 is provided with a slight inclination with respect to the traveling direction of the light, but if it were not inclined, the ultraviolet rays reflected by the filter film 5 would be This time, the light travels back through the light guide rod 3 toward the light source lamp, is reflected again, and advances toward the light guide cable, and this process is repeated, eventually resulting in a large amount of ultraviolet and infrared rays being introduced into the light guide cable. However, if the light-receiving end of the optical conductor cable 4 is inclined with respect to the traveling direction of the light as in this example, the light reflected from the inclined surface will not travel back toward the light source. . Note that the ultraviolet rays extracted as described above may be discarded as is, but in some cases, it may be introduced into another light guide 6 and used for the desired use. be.

The present invention has been made for the purpose of efficiently introducing light emitted from a light guide 3 into a light guide cable 4 and/or a light guide 6 in an artificial light source device such as a double light source device. It is.

-M-Ichisei Figure 1 is a configuration diagram for explaining one embodiment of the present invention. The same reference numbers as in FIG. 3 are provided. Therefore, in the present invention.

The light-receiving end of the light guide cable 4 is formed into a concave surface 4a as shown, so that the light emitted from the light guide 3 is diffused after being introduced into the light guide cable 4, and is diffused into the light guide 6. Since the light is introduced into the light guide cable 4 and the light guide 6 in a focused manner, the light can be introduced into the light guide cable 4 and the light guide 6 efficiently.

Although an example of separating ultraviolet and infrared components from an artificial light source has been described above, the present invention is not limited to the above embodiments. For example, in the breeding, cultivation, testing, etc. of germ-free animals or plants, it is required that humans etc. do not enter the germ-free room. Since the light source lamp can be placed outside the sterile room, there is no need to enter the sterile room even if the light source lamp breaks, which is convenient. Therefore, when growing and cultivating such sterile animals and plants, the necessary light components and unnecessary or harmful light components differ depending on the animals and plants being raised or cultivated. It is best to select a filter according to the object, and also use a light source lamp with light components suitable for the object.

As is clear from the above description, according to the present invention, specific light components, such as ultraviolet light components, are effectively separated from light from an artificial light source lamp, and higher quality light components, such as only visible light, are separated. can be efficiently introduced into optical conductor cables,
Moreover, one separated light component can be effectively introduced into the light guide.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram for explaining one embodiment of the present invention,
FIGS. 2 and 3 are t+'l diagrams for explaining an example of an artificial light source device previously proposed by the applicant. - 1...artificial light source, 2...parabolic reflector, 3...
Light guide rod, 4...-light guide cable, 4a... light receiving end, 5... filter, 6... light guide cable. 1 Figure 3

Claims (3)

[Claims] (1) a light source lamp, a reflecting mirror that reflects the light from the light source lamp as parallel rays, and a light guide rod whose light-receiving end face is arranged to face the reflecting mirror and into which the parallel rays are introduced; , a light guide cable having a light receiving end surface disposed on the light emitting end surface side of the light guide rod opposite to the light emitting end surface; In an artificial light source device that has a filter that transmits only a predetermined light component and reflects other predetermined light components, and uses the output light of the light guide cable as a light source, the light receiving end of the light guide cable is formed to have a concave surface. An artificial light source device characterized by: (2) The artificial light source device according to claim (1), wherein the filter is a gold vapor-deposited film. (3) A light-receiving end of the light guide through which the reflected light beam from the light guide cable is introduced is disposed in the reflection direction of the other predetermined light component.
The artificial light source device according to item 1) or item (2).