JP2022047246A - Illumination device, glass art work, and illumination system - Google Patents

Abstract

To provide an illumination device, a glass art work and an illumination system that are capable of emitting, as illumination light, light in a complex irradiation pattern caused by a caustic phenomenon.SOLUTION: An illumination device comprises: a light source unit with a function of emitting directional light; and an optical unit comprising one or more optical bodies made of amorphous material. When the optical unit is irradiated with the light emitted from the light source unit, illumination light is emitted which is light having a caustic phenomenon.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to luminaires and glass art works, in particular to luminaires, glass art works and lighting systems utilizing caustics.

Lighting devices used in hotel lobbies, restaurants, cafes, home living rooms, etc. have the main purpose of providing brightness and softness to the illuminated space. Another purpose of the lighting device is to create a space such as splendor and luxury by fusing its own existence and the lighting light, such as a chandelier. Apart from such luminaires, indirect lighting may be used to add comfort, relaxation or artistic elements to the space.

However, most of the lighting so far has a monotonous light distribution pattern (luminous intensity distribution with respect to the space to which the light is emitted, also called a spatial distribution of light), which is not diverse and lacks artistic elements. There was a problem. Here, the "diversity" of the illumination pattern of the illumination light may be read as the complexity of the irradiation pattern by the illumination light or the complexity of the pattern of light and shadow drawn by the illumination light in the surrounding space.

The luminaire described in Patent Document 1 is an example of a luminaire that emits colored light having fluctuations rather than uniform brightness.

Japanese Unexamined Patent Publication No. 2009-140897

In Japan, there is a culture that favors shade as well as light, which has been expressed by the word "Yinrei San", but the lighting fixtures described in Patent Document 1 try to actively use such an idea. It's not lighting. For example, the luminaire described in Patent Document 1 uses a mineral as a luminaire, and the light acted by the mineral can express only an unspecified fine inspiration, and is generated by a caustic phenomenon. It is difficult to create complex and diverse irradiation patterns. In addition, minerals have individual differences in their outer shape and impurities contained in them, and therefore their optical action also differs depending on the solid, so they are not suitable for mass-produced factory products due to poor reproducibility and unstable quality. There is also a problem.

In view of the above-mentioned problems, it is an object of the present disclosure to provide a lighting device, a glass art work, and a lighting system capable of emitting light having a complicated irradiation pattern such as that caused by a caustic phenomenon as illumination light. Furthermore, the present disclosure is intended to stably provide such lighting devices, glass art works and lighting systems.

The lighting device according to the present disclosure includes a light source unit having a function of emitting light having directivity, and an optical unit composed of one or a plurality of optical bodies made of an amorphous material, and the light source unit. When the optical unit is irradiated with the light emitted from the optical unit, the light having a coastal phenomenon is emitted as illumination light.

The glass art work according to the present disclosure is composed of a glass art unit composed of a combination of a plurality of glass parts, and when the glass art unit is irradiated with directional light, light having a coastal phenomenon is emitted. It is characterized by doing.

The lighting system according to the present disclosure is characterized by including the above-mentioned glass art work and a light source unit having a function of emitting light having directivity.

According to the present disclosure, it is possible to provide a lighting device, a glass art work, and a lighting system capable of emitting light having a complicated irradiation pattern as caused by a caustic phenomenon as illumination light. Further, according to the present disclosure, such lighting devices, glass art works and lighting systems can be provided with stable quality.

It is explanatory drawing which shows the structural example of the glass art work 10 which concerns on Embodiment 1 and the optical unit 1 included in it. It is a side view of the lighting system 100 which concerns on Example 1. FIG. It is explanatory drawing which shows the state at the time of lighting of the lighting system 100 which concerns on Example 1. FIG. It is a front view which shows the other example of the lighting system 100 which concerns on Example 1. FIG. It is a top view of the lighting system 100 which concerns on Example 2. FIG. It is a top view which shows the example of the lighting apparatus 200 which concerns on Embodiment 2. FIG. It is a top view which shows the other example of the lighting apparatus 200 which concerns on Embodiment 2. FIG.

In the lighting device, glass art work, and lighting system according to the present disclosure, the various and complicated effects of light and shade of the caustics phenomenon are positively utilized as the lighting light. Light incident on a glass containing liquid or a metal with high reflectance repeats complicated reflection and refraction, creating a unique light pattern or streak on the surface of surrounding objects. This phenomenon is called caustics or caustics phenomenon. These include complex water surface patterns created by the reflection and refraction of parallel rays such as the sun's rays when they enter a glass of water, and patterns that appear on the bottom of a cup. This phenomenon is considered to be an example of concretely realizing the "Yin-Sui Rei San", which loves the shade as well as the light, and also thinks that the various patterns and colors created by them are beautiful. In the present disclosure, a method for specifically realizing such a caustics phenomenon in a lighting device is shown. To create a caustic phenomenon, a light source and one that intricately refracts and reflects the light emitted from the light source are required. In each of the embodiments shown below, the light source unit 2 or the light source unit 21 is in charge of the former role, and the optical unit 1 or the optical unit 22 is in charge of the latter role.

Embodiment 1.
FIG. 1 is an explanatory diagram showing a configuration example of a glass art work according to the first embodiment and an optical unit included therein. 1 (a) and 1 (b) show examples of the glass art work 10 according to the first embodiment, respectively, and FIG. 1 (c) shows the glass art shown in FIGS. 1 (a) and 1 (b), respectively. An example of an optical body 11 constituting the optical unit 1 included in the work 10 is shown.

As shown in FIGS. 1 (a) and 1 (b), the glass art work 10 includes an optical unit 1. The glass art work 10 is used as a lighting device or a lighting system, for example, by being combined with a light source unit 2 described later. The glass art work 10 may be provided in a form that does not include the light source unit 2 on the premise that the light source unit 2 described later is separately prepared, or the light source unit 2 whose positional relationship is adjusted in advance may be provided. It may be provided as one of the components of the included lighting system 100.

When light is incident, the optical unit 1 refracts and reflects the incident light. At this time, the optical unit 1 imparts a caustics effect to the incident light. That is, the optical unit 1 converts the incident light into light having a caustics phenomenon and emits it by refracting and / or reflecting the incident light.

The optical unit 1 is composed of an optical body 11 made of an amorphous material such as glass. Further, as the material of the optical body 11, for example, an amorphous resin material such as polycarbonate or acrylic can be used in addition to glass. The material of the optical body 11 may be a crystalline resin material, and is not particularly limited as long as it is a member capable of exhibiting the actions of reflection and refraction with respect to incident light. However, from the viewpoint of ease of processing, the material of the optical unit 11 is preferably an amorphous material. Further, the optical unit 1 may be configured by combining one or a plurality of such optical bodies 11. In other words, the number of optical bodies 11 constituting the optical unit 1 may be one or a plurality.

The optical unit 1 shown in FIG. 1 adopts ikebana, which is a traditional Japanese art, as the basic concept of its modeling. That is, a plurality of optical bodies 11 are combined to create an optical unit 1 having a shape like an ikebana. By adopting such an optical unit 1, we have realized lighting that combines the traditional Japanese beauty of "In Praise of Shadows" and "Ikehana" (here, both the main body of the fixture and the illumination light). This makes it possible for people to feel the beauty of Japan. In the following example, the optical unit 1 may be referred to as a "glass art unit 1", and the optical body 11 constituting the optical unit 1 may be referred to as a "glass art component 11".

For the production of the individual optical body 11, for example, mold shaping, which is one method of producing glass crafts such as chandeliers, can be used. More specifically, the molten glass material is poured into a mold having a shape such as a polygon or a star, and the surface has various curved shapes by taking it out and stretching or twisting it before it cools sufficiently. Moreover, optical bodies having various outer shapes similar to various flowers may be created. It is also possible to apply such a mold shaping method to a thermosetting resin or the like to create optical bodies having various outer shapes. By preparing glass art parts 11 of various shapes (see 11a to 11f in FIG. 1 (c), etc.) in advance, various shapes can be obtained according to the same principle as when constructing an ikebana work by combining various flowers. Glass art unit 1 can be constructed.

For example, the glass art unit 1A shown in FIG. 1 (a) is configured by combining the glass art component 11c, the glass art component 11d, and the glass art component 11e shown in FIG. 1 (c). Further, for example, the glass art unit 1B shown in FIG. 1 (b) is configured by combining the glass art component 11a, the glass art component 11b, and the glass art component 11f shown in FIG. 1 (c).

As described above, the glass art work 10 can include the light source unit 2. Ideally, it is preferable to use a light source that produces parallel rays in order to cause the caustics phenomenon. Many traditional luminaires use point or line light sources to produce synchrotron radiation, which is effective in achieving uniform brightness, but with light and shade, such as caustics. Not suitable for creating various combinations.

The light source unit 2 is not particularly limited as long as it can irradiate light having directivity instead of light spreading radially. The light source unit 2 is preferably a light source capable of irradiating light that is substantially parallel when viewed from at least one direction (for example, light that has a spread in the horizontal direction but is substantially parallel in the vertical direction). For example, the light source unit 2 uses a highly directional downlight / spotlight having a narrow light distribution characteristic and brightly illuminating a specific place, a module used for an automobile headlight, or the like as a light source for producing parallel light rays. May be good. In recent years, headlight modules using LEDs (Light Emitting Diodes) as light sources have been used, and they are rapidly becoming popular because they are smaller and have higher illuminance than conventional headlight modules. is doing. The headlight module using an LED includes, for example, the headlight device described in Japanese Patent Application Laid-Open No. 2020-032803 or an LED unit included therein, and it is possible to use them. In addition to using the LED light source, the light source unit 2 may use a laser light source. Further, the light emitted from the light source unit 2 is not limited to parallel light rays, and may be light having a certain spread such as a light source used for indirect lighting.

Hereinafter, some configuration examples when the glass art work 10 of the present embodiment is used as the lighting system 100 will be described.

<Example 1>
FIG. 2 is a block diagram of the lighting system 100 according to Example 1. In this example, a light source for indirect lighting on the wall surface 3 is used as the light source unit 2 of the lighting system 100. Specifically, the light source unit 2 is installed toward the wall surface 3 as a predetermined irradiation surface, and the glass art work 10 is installed between the wall surface 3 and the light source unit 2. At this time, the light source unit 2 and the glass art work 10 are installed so that the light from the light source unit 2 is incident on the surface of at least a part of the glass art unit 1 of the glass art work 10. In this way, the lighting system 100 using the glass art work 10 is configured. In the glass art work 10, the glass art unit 1 may be fixed to the pedestal 4 as shown in the figure.

In such an arrangement, when the light L1 from the light source unit 2 irradiates the glass art unit 1, the complex light and shadow created by the caustics phenomenon expressed by the various surface shapes of the glass art unit 1. The irradiation pattern including the above is projected on the wall surface 3. FIG. 3 is an explanatory diagram showing a state when the lighting system 100 according to Example 1 is lit. Note that FIG. 3 shows only a part of the refraction and reflection action on the light incident on the glass art unit 1, for example, the light emitted by repeatedly refracting and reflecting in the glass art unit 1 and the glass. Not all of the complex optical paths are described, such as light that has passed through the art unit 1, is reflected by the wall surface 3, is incident on the glass art unit 1 again, and is refracted or reflected.

In this way, a lighting space is realized in which a complex irradiation pattern having a complex and diverse combination of beautiful light and shade is created by the illumination light, as opposed to the conventional monotonous irradiation pattern of indirect lighting. To. Here, in the illumination light that creates an irradiation pattern projected on the wall surface 3 as the irradiation surface, the light L1 from the light source unit 2 is applied to the glass art unit 1 and is refracted or reflected by the optical body 11 or both. Not only the light but also the light that reaches the irradiation surface directly from the light source unit 2 may be included. Further, a plurality of light source units 2 and a plurality of glass art units 1 can be used depending on the size of the wall surface 3. As a result, it is possible to replace the indirect lighting on the entire wall surface 3. FIG. 4 is a front view showing an example of a glass art work 10 having a plurality of glass art units 1 and a lighting system 100. In FIG. 4, the light source unit 2 is not shown.

<Example 2>
FIG. 5 is a top view of the lighting system 100 according to Example 2. In this example, one or more glass art units 1 are installed on a pedestal 4 such as a circular table.

Here, with respect to the direction of the glass art unit 1, the direction of the upper surface (+ Y direction in the figure), which is the surface on which the glass art unit 1 is placed when viewed from the center of the pedestal 4, is upward, and the opposite direction is the bottom surface. The direction (-Y direction) is called the downward direction, and the direction orthogonal to the vertical direction (X direction) is called the side surface direction. In this example, the glass art unit 1 is irradiated with light by using one or a plurality of light source units 2 from the side surface direction. At this time, the light source unit 2 may be provided on the peripheral region of the side surface or the upper surface of the pedestal 4 or the surrounding ceiling or floor, and may irradiate the glass art unit 1 with light from a direction intersecting the vertical direction. ..

In this way, lighting having a complex light and shadow effect created by the caustics phenomenon on the pedestal 4, more specifically, lighting having an irradiation pattern having such an effect can be emitted as illumination light. The equipment is realized. By installing the lighting system 100 of this example at the entrance of a hotel or a garden, for example, it is possible to create a new space.

As described above, according to the present embodiment, the complex weaving of light and shade is performed by utilizing the caustics phenomenon, which can be said to be a concrete example of "Yin-Hairei San", which loves the shadow at the same time as the light that is the basis of Japanese culture. Lighting can be created and provided. That is, the invention according to the present disclosure irradiates the optical unit 1 having various surface shapes with the light emitted from the light source unit 2, unlike the conventional lighting for the purpose of generating uniform illuminance. This creates the diverse and complex light and shade of the caustics phenomenon and further the caustics phenomenon, and utilizes them as illuminance light. In Examples 1 and 2, the caustics phenomenon is directed toward a predetermined irradiation surface such as a wall, floor, ceiling or the upper surface of the pedestal 4 of the space where the glass art work 10 is installed, or a target space such as a space around the pedestal 4. (More specifically, light having a light distribution pattern including various and complicated light and shadows produced by caustics phenomenon) is used as illumination light.

Such lighting realizes a function that heals and energizes people who are often tired of busy and stressful daily life, and at the same time, a function that conventional lighting does not have. The effectiveness of Examples 1 and 2 described above has been confirmed by psychological experiments, and the details will be announced separately by the present inventors as "Psychological Experiment Evaluation of Art Lighting Combining LED and Glass Art". ..

Embodiment 2.
FIG. 6 is a configuration diagram showing a configuration example of the lighting device according to the present embodiment. The lighting device 200 shown in FIG. 6 includes a light source unit 21 and an optical unit 22.

The light source unit 21 emits, for example, parallel rays or light substantially parallel when viewed from at least one direction. The light emitted from the light source unit 21 is not limited to parallel rays in a strict sense, and may not be light having no directivity such as scattered light or light emitted radially. In other words, the light source unit 21 may be any light source capable of emitting light having directivity. Here, the higher the directivity, the more preferable. That is, it is more preferable that the spreading angle of the light emitted from the light source unit 21 is small. The light source unit 21 may be, for example, the above-mentioned light source unit 2.

The optical unit 22 has a curved surface shape on its surface. The optical unit 22 may be, for example, a refracting member having a curved surface shape having a different curvature depending on the region. The material of the optical unit 22 is, for example, an amorphous material. For example, as the material of the optical unit 22, in addition to glass, an amorphous resin material such as polycarbonate or acrylic can be used. The material of the optical unit 22 may be a crystalline resin material, and is not particularly limited as long as it is a member capable of exhibiting the actions of reflection and refraction with respect to incident light. The optical unit 22 incidents the light L21 from the light source unit 21, gives the incident light a caustic effect, and emits the light. The optical unit 22 may be, for example, a polyhedron that gives a one-stage or multi-stage condensing action to the incident light L21, which is different for each region. In FIG. 6, the emitted light emitted from the optical unit 22 is shown as L22. The light distribution pattern of the emitted light L22 is a peculiar pattern that is not uniform due to the caustics phenomenon, and thereby it is possible to create a non-uniform light-dark pattern or gradation as shown by P21 in the figure. The optical unit 22 may be, for example, the above-mentioned optical body 11 (glass art component 11) or the optical unit 1. The lighting device 200 may include a plurality of optical units 22, and in that case, one optical unit 1 may be configured by the plurality of optical units 22, or a plurality of optical units 1 may be configured. You may.

Further, as shown in FIG. 7, the lighting device 200 may further include a moving unit 23. The moving unit 23 changes the positional relationship between the light source unit 21 and the optical unit 22 over time. The moving unit 23 may change the distance between the light source unit 21 and the optical unit 22. Further, the moving unit 23 may change the angle of the light source unit 21 with respect to the optical unit 22. As a result, any one of the position, direction and intensity of the light from the light source unit 21 irradiated to the optical unit 22 or a combination thereof is changed with time.

The moving unit 23 may be, for example, a moving mechanism that translates the light source unit 21 or the optical unit 22, or may be a rotating mechanism that rotates the light source unit 21 or the optical unit 22 along a certain rotation axis. However, it may be a combination thereof. As an example, when the pedestal 4 on which the optical unit 22 is installed is a turntable that rotates about the center thereof, it may be a drive device or the like that rotates the turntable. In that case, the light source unit 21 may be fixed to a non-rotating region (for example, a peripheral portion) on the pedestal 4, or may be separately provided.

As described above, according to the present embodiment, as in the first embodiment, the caustics effect can be given to the light from the light source unit 21, and the emitted light has a unique pattern of light and darkness that is not uniform. You can create a gradation. When a person visually recognizes such emitted light, the comfort of the person is improved and the mind is healed. Further, in the present embodiment, since the amorphous material is used as the material of the optical body that gives the caustics effect to the light from the light source unit 21, it can be mass-produced industrially, and such an effect can be stably obtained. It is possible to provide lighting equipment and glass art works.

Furthermore, by using a light source with high directivity, the caustics effect is enhanced and a good high utility (healing effect) can be obtained. Further, by changing the irradiation pattern (light distribution pattern of the emitted light) with time, even higher utility can be obtained without getting bored.

100 Lighting system 10 Glass art work 1 Optical unit (glass art unit)
11 Optical body (glass art parts)
2 Light source unit 3 Wall surface 4 Pedestal 200 Lighting device 21 Light source unit 22 Optical unit 23 Moving unit

Claims (6)

A light source unit that has the function of emitting light with directivity,
It comprises an optical unit composed of one or more optics made of an amorphous material.
A lighting device characterized in that when the optical unit is irradiated with the light emitted from the light source unit, the light having a caustic phenomenon is emitted as illumination light. The lighting device according to claim 1, wherein the light source unit uses an LED or a laser as a light source. The lighting device according to claim 1 or 2, wherein the optical body has one or more curved surface shapes on the surface. The lighting device according to any one of claims 1 to 3, wherein the optical body is a glass component formed by using mold shaping. It consists of a glass art unit made up of a combination of multiple glass parts.
A glass art work characterized by emitting light having a caustic phenomenon when the glass art unit is irradiated with light having directivity. The glass art work according to claim 5 and
A lighting system including a light source unit having a function of emitting light having directivity.

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