JP2006285285A - Beam parallelizing apparatus and observing artificial rainbow generating apparatus with same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive beam parallelizing apparatus capable of parallelizing beams from a normal light source such as a lamp and having simple structure and to provide an observing artificial rainbow generating apparatus capable of obtaining high illuminance and faithfully reproducing a rainbow to be generated in the natural world by using the beam parallelizing apparatus. <P>SOLUTION: The beam parallelizing apparatus 10 constituted of a panel having many small-diameter light guide holes straightly connected to the front and the rear surfaces and formed so that axial directions may be parallel with each other is used. The observing artificial rainbow generating apparatus comprises a light source 7 consisting of a plurality of lamps 8, the beam parallelizing apparatus 10 for parallelizing beams from the light source 7 and a mist screen device 4 for receiving the parallelized beams and forming a mist screen 3 by spraying water to form an artificial rainbow. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a light collimating device for collimating light rays from a light source composed of a plurality of lamps and a device for generating an artificial rainbow for observation.

  As shown in FIG. 6, the conventional artificial rainbow generator 31 for observation comprises a light source 32 composed of a monocytic lamp and a mist droplet screen device 33. The mist droplet screen device generates mist droplets downward from a nozzle group 34. The mist droplets are ejected to form a mist droplet screen 35. The mist droplets ejected from the nozzle group 34 are received by the water tank 36, and returned to the nozzle group 34 by the water pipe 38 provided with a pump 37 in the middle to be circulated. When the light from the light source 32 is applied to the fog screen 35, an artificial rainbow is reproduced on the fog screen 35.

  However, in the conventional apparatus described above, since the light source 32 is a single-ball lamp, a high illuminance cannot be obtained even if the single-ball lamp has a large capacity, so that a clear rainbow cannot be reproduced.

  In addition, the light from the light source 32 is not a parallel light beam such as actual sunlight, but is radiated from the light source in a radial manner, so that the rainbow secondary rainbow generated in the natural world or the darkened portion between the rainbow and the secondary rainbow, etc. Cannot be reproduced faithfully, and the change in the appearance of the rainbow when the observer moves is unnatural.

  Furthermore, the light that has passed through the mist droplet screen 35 is reflected on a wall or the like behind the screen to brighten the background of the artificial rainbow, which makes it difficult to observe the artificial rainbow.

  By the way, an apparatus for obtaining parallel rays from a light source such as a lamp includes an optical device using a lens or the like. However, it requires a large number of lenses, has a complicated structure, is expensive, and is an artificial rainbow generator for observation. It is difficult to adopt as a light source. If an inexpensive beam collimating device having a simple structure can be obtained, it can be applied not only to an artificial rainbow generator for observation but also to future environmental testing devices.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an observational artificial rainbow generator capable of obtaining high illuminance and faithfully reproducing a rainbow generated in the natural world.

  Another object of the present invention is to provide a light collimating device that can collimate light from a normal light source such as a lamp and has a simple structure and is inexpensive.

  In order to achieve the above object, the light collimating device according to the present invention comprises a panel having a large number of small-diameter light guide holes which are linearly connected to the front and rear surfaces and formed so that the axial directions are parallel to each other. The configuration is as follows.

  The beam collimating device according to the present invention comprises a panel formed by bundling a number of narrow cylindrical tubes having both ends opened so as to be parallel to each other, and guides the holes of the cylindrical members. The structure is a hole, and the diameter of the light guide hole is 1/100 or less of the thickness of the panel.

  An artificial rainbow generator for observation according to the present invention includes a light source composed of a plurality of lamps, a light collimating device for collimating light rays from the light source, and an artificial rainbow by receiving the collimated light rays. Therefore, the apparatus has a configuration including a mist-drop screen device that forms a mist-drop screen by spraying water.

  Further, the beam collimating device is configured to include a panel having a large number of small-diameter light guide holes which are linearly connected to the front and rear surfaces and formed so that the axial directions thereof are parallel to each other.

Furthermore, a reflection suppression panel is provided behind the fog droplet screen to absorb and absorb the light that has passed through the fog droplet screen. The reflection suppression panel communicates linearly with the front and rear surfaces, and the axial directions are parallel to each other. In this configuration, the panel has a large number of small-diameter light guide holes.
Further, a heat exhaust mechanism is provided above the light source.

  As described above, according to the first to third aspects of the present invention, a low-cost beam collimating device can be realized with a simple structure without using an expensive optical device using a lens or the like.

  According to the fourth to seventh aspects of the present invention, by using the light collimating device, an artificial rainbow can be generated using parallel light rays that approximate the actual sunlight, and an artificial rainbow close to the natural rainbow is obtained. Therefore, the sub-rainbow that can be seen in the natural world and the dark part between the rainbow and the secondary rainbow can be faithfully reproduced, and the change in the appearance of the rainbow when the observer moves is also natural. It can be reproduced in the same way as the rainbow.

  Furthermore, since the light source is composed of a plurality of lamps, high illuminance can be obtained and a clear rainbow can be observed.

  In addition, since the light that has passed through the fog screen is absorbed by the reflection suppressing panel and hardly reflected toward the viewer, the artificial rainbow can be more easily observed.

Embodiments of the beam collimation device and the observation artificial rainbow generator according to the present invention will be described below based on the specific examples shown in FIGS.
As shown in FIGS. 1 and 2, the artificial rainbow generator for observation 1 of the present embodiment includes a light source device 2 that emits light necessary to make an artificial rainbow, and actually generates an artificial rainbow by receiving this light. It comprises a mist droplet screen device 4 for producing a mist droplet screen 3, and both devices 2 and 4 are arranged with an observation space 5 through which an observer passes.

  The light source 7 of the light source device 2 has a plurality of lamps 8 and 8 arranged on a substantially vertical plane. The vertical and horizontal dimensions of the light source 7 are substantially the same as the size of the rainbow to be generated. When a 1 m rainbow is to be generated, the vertical dimension H (see FIG. 1) and lateral dimension W (see FIG. 2) of the light source 7 are about 1 m each.

  A light collimating device 10 that is substantially parallel to the light source 7 is provided on the front surface of the casing 9 that surrounds the light source 7. The light collimating device 10 communicates linearly with the front and rear surfaces, and the axial directions are parallel to each other. As shown in FIG. 3, a plurality of narrow cylindrical tubular bodies 11 having both ends opened are connected to each other as shown in FIG. They are bundled so as to be parallel and configured in a panel shape, and the hole of the tubular body is used as the light guide hole. The hole diameter R of the tubular body 11 is 1 / th of the thickness of the panel, that is, the length L of the tubular body. 100 or less is desirable.

  The tubular body 11 has, for example, a straw-like shape with a circular cross section, and the inner wall and edge of the tubular body have a low lightness color such as black, so that the reflection of light is minimized. .

  Further, an exhaust heat mechanism 12 for exhausting heat from the light source 7 to the outside of the casing 9 is provided above the light source 7, and this exhaust heat mechanism is constituted by an exhaust duct 13 and an exhaust fan 14. is there.

  The light source device 2 is mounted on a support frame 16 with casters 15 and is movable, so that the distance from the fog screen device 4 can be adjusted.

  The mist droplet screen device 4 includes a nozzle group 17 in which a large number of nozzles for spraying water are arranged in a horizontal direction, and the mist droplet screen 3 is substantially parallel to the light beam collimating device 10 of the light source device 2 described above. The number and height of the nozzles constituting the nozzle group 17 are set so that the size of the mist droplet screen 3 is larger than the vertical and horizontal dimensions of the light source 7.

  Below the mist screen 3, that is, below the nozzle group 17, a water tank 18 for receiving the sprayed water is provided, and the other end of the water pipe 19 having one end connected to this water tank is connected to the pump 20. To the nozzle group 17.

  Further, a reflection suppression panel 21 is erected behind the mist droplet screen 3, and the reflection suppression panel 21 is open at both ends as in the light collimation device 10 of the light source device 2 described above as shown in FIG. A large number of narrow cylindrical tubular bodies 22 are bundled so as to be parallel to each other and configured in a panel shape, and the holes of the tubular tubular bodies 22 are used as light guide holes, and the outer periphery is surrounded by a frame body 23. is there.

  The inner wall and the edge of the cylindrical body 22 are also low in lightness color such as black like the cylindrical body 11 of the beam collimating device 10 so that the reflection of light is minimized.

  Both the mist droplet screen device 4 and the reflection suppression panel 21 are supported by a frame erected on the base 24.

Next, the operation of the beam collimating device and the observation artificial rainbow generator configured as described above will be described.
In the light source device 2, the light from each of the lamps 8, 8 constituting the light source 7 spreads radially and includes many oblique light beams, but the oblique light beams pass through the light collimating device 10. The light after being repeatedly attenuated and absorbed by the inner wall of the light guide hole of the cylindrical body 11 and thus passed through the light collimating device is light having a very high proportion of light rays parallel to each other, that is, sunlight. Near light is obtained.

  On the other hand, in the mist droplet screen device 4, the mist droplets sprayed from the nozzle group 17 form the mist droplet screen 3, and the mist droplets fall and are received by the water tank 18, and pass through the water pipe 19 by the pump 20. It is sent again to the nozzle group 17 and circulates.

  The parallel light from the light source device 2 is applied to the mist droplet screen 3, and the artificial rainbow 25 is generated as shown in FIG. 5 by the prism action of the fine mist droplets constituting the mist droplet screen 3. The artificial rainbow 25 can be observed on the mist droplet screen 3 within a range in which the angle θ formed by the traveling direction of the light beam and the line of sight 26 of the observer is 40 degrees to 42 degrees.

  Further, the auxiliary rainbow 27 around the artificial rainbow 25 and the dark part between the artificial rainbow 25 and the auxiliary rainbow 27 can be observed in the same manner as in the natural world, and the observer can change his / her position. It can also be observed that the size and thickness of the artificial rainbow 25 change in the same way as in the natural world.

  The light that has not been reflected by the mist droplets and has passed through the mist droplet screen 3 reaches the reflection suppression panel 21 behind the screen, and is repeatedly reflected on the wall inside the light guide hole of the cylindrical body 22 constituting the reflection suppression panel 21. Attenuated and absorbed. Thereby, reflection of light is suppressed and the artificial rainbow 25 can be observed more clearly.

  In the above-described embodiment, the beam collimating device 10 and the reflection suppressing panel 21 are configured in a panel shape by bundling a large number of thin cylindrical tubular bodies 11 and 22 opened at both ends so as to be parallel to each other. Although the holes of the tubular bodies 11 and 22 are used as light guide holes, a panel having a lattice shape in the cross section or a honeycomb structure panel having a hexagonal lattice shape in the cross section may be used.

  In the above-described embodiment, the mist droplet screen device 4 and the reflection suppressing panel 21 are provided on one base 24. However, the mist droplet screen device 4 and the reflection suppressing panel 21 may be supported by individual bases, or may be moved by attaching casters to the base. Sometimes it is possible.

1 is a schematic overall view showing an embodiment of an artificial rainbow generator for observation according to the present invention. The schematic plan view which shows the Example of the artificial rainbow generator for observation which concerns on this invention. The partially expanded perspective view which shows the structure of a beam collimation apparatus. The partial expansion perspective view which shows the structure of a reflection suppression panel. The figure which shows the artificial rainbow produced | generated by the apparatus of FIG. The schematic whole figure which shows an example of the conventional artificial rainbow generator for observation.

Explanation of symbols

1 Artificial Rainbow Generator 2 Light Source Device
3 Fog screen 4 Fog screen device
5 Observation space 7 Light source
DESCRIPTION OF SYMBOLS 8 Lamp 9 Casing 10 Beam collimating device 11 Cylindrical body 12 Heat exhaust mechanism 13 Exhaust duct 14 Exhaust fan 15 Caster 16 Support frame 17 Nozzle group 18 Water tank 19 Water pipe 20 Pump 21 Reflection suppression panel 22 Cylindrical body 23 Frame 24 Base 25 Artificial rainbow 26 Observer's line of sight 27 Secondary rainbow

Claims (7)

  A beam collimating device comprising a panel having a large number of small-diameter light-guiding holes that are linearly connected to the front and rear surfaces and formed so that their axial directions are parallel to each other.   A beam collimating device comprising a panel formed by bundling a plurality of thin cylindrical tubular bodies having both ends opened so as to be parallel to each other, wherein the holes of the tubular bodies serve as light guide holes.   The light collimating apparatus according to claim 1 or 2, wherein the diameter of the light guide hole is set to 1/100 or less of the thickness of the panel.   A light source consisting of a plurality of lamps, a light collimating device for collimating the light from this light source, and spraying water to produce an artificial rainbow upon receiving the collimated light to form a fog screen An artificial rainbow generator for observation comprising a fog screen device.   5. The observation artificial rainbow according to claim 4, wherein the beam collimating device includes a panel having a large number of small-diameter light-guiding holes that are linearly connected to the front and rear surfaces and have axial directions parallel to each other. Generator.   A reflection suppression panel is provided behind the mist droplet screen to absorb and absorb the light that has passed through the mist droplet screen. The reflection suppression panel communicates linearly with the front and rear surfaces so that the axial directions are parallel to each other. The observation artificial rainbow generator according to claim 4, comprising a panel having a large number of small-diameter light guide holes formed in the observation panel. The artificial rainbow generator for observation according to claim 4, wherein a heat exhaust mechanism is provided above the light source.

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