JPH08235917A - Illuminating lamp shade - Google Patents

Abstract

PURPOSE: To differentiate colors between diffracted light and transmitted light to satisfy a complemental relationship by pasting reflecting holograms to a transmitted light plate to forum a shade. CONSTITUTION: When a light source is lit, white light L is scattered in all direction and projected as direct light to downward illumination points. The light L illuminated to holograms 11 -13 is diffracted and reflected downward as green light L1 in the hologram 11 , as red light L2 in the hologram 12 and as blue light L3 in the hologram 13 , respectively, and, if not diffracted, transmitted outside a cover 3 as scattered light L'1 , L'2 , L'3 so that it can be visibly recognized in different colors from those of the downward diffracted light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp cover for indoor lighting, and more particularly to a lamp cover having a spherical light source such as an incandescent lamp as a light source.

[0002]

2. Description of the Related Art As a lamp cover for lighting, conventionally, it is formed of an opaque material that does not transmit light such as metal, or a transparent material that transmits almost all light such as transparent resin or glass. It is well known that a molded object made of an opaque material that diffuses and scatters light is used, but from the viewpoint of decorativeness, the above-mentioned stained glass with a pattern formed on the opaque material is slightly used. It's just that.

In the case of stained glass, the amount of light absorbed by the stained glass is large, and it is unavoidable that the outside of the stained glass becomes dark, and furthermore, the patterns, colors, etc., look the same from any angle. .

The present invention has been made in view of the above circumstances, and the amount of light absorbed by the cover is small, and the light diffracted by the cover and the light transmitted through the cover have a complementary color relationship for decoration. An object of the present invention is to provide a lighting cover that has a unique decorative effect that is visually recognized in different colors.

[0005]

SUMMARY OF THE INVENTION The present invention is a lamp cover for covering a light source for illumination, wherein the lamp cover comprises a hologram plate formed by attaching a reflection hologram to a light-transmitting plate. The cover may be divided and the stereoscopic image may be displayed.

[0006]

By using a hologram plate formed by adhering a reflection hologram to a translucent plate as a lamp cover for explaining the operation of the present invention with reference to FIG. 1, a spherical light source such as an incandescent lamp can be used. When the light is turned on, the light that does not illuminate the cover is used for illumination by the light of the color tone of the light source such as white light diverging to the outside such as below, but the light radiated to the cover is the condition at the time of exposure. As a result, light having substantially the same wavelength as the light source for exposure, for example, green light, is reflected, mixed with direct light from the light source, for example, white light, and diverged to the illuminated portion.

Further, the light which is applied to the hologram plate and is not diffracted, that is, the complementary color light of the diffracted light, for example, violet light is transmitted, and exhibits a unique decorative effect. In addition, if the object light is fixed during exposure and multiple exposure is performed by changing the incident angle of the reference light, it is possible to visually recognize colors with completely different color tones depending on the viewing angle, and to irradiate different objects with different object light. However, if the incident light of the reference light is changed and multiple exposure is performed, different stereoscopic images and the like can be visually recognized depending on the viewing angle.

Even when both the object light and the reference light are exposed by parallel light, different colors appear depending on the viewing angle.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. 1 and 2 show the first embodiment of the present invention.
6A and 6B are partial cross-sectional views showing a lamp cover in the second embodiment.

Embodiment 1 A case of a lamp cover for a floor stand will be illustrated with reference to FIG.

First, the hologram is divided into two by dividing a light from an argon laser light source that oscillates a green light having a wavelength of 528 nm into two by a light sensitive material such as a photopolymer having a size to be attached to the upper part of the cover by an optical system (not shown). Divergence light (focal length = 213.4 mm) with incident angles of 13.2 ° from below and 0 ° from horizontal direction,
Interference fringes are formed by irradiating parallel light of 60 ° from above and 0 ° from the horizontal direction, and then a normal development process is carried out to produce the first hologram ₁₁ which is then attached to the central portion of the cover. The hologram 1 ₂ of No. ₂ has a wavelength of 647n by a light sensitive material such as photopolymer by an optical system not shown.
The light from the krypton laser light source that oscillates the red color of m is divided into two, and the divergence light of which the incident angles are 30.0 ° from above and 0 ° from the horizontal direction (focal length = 1
89.8 mm), 60 ° from above, 0 ° from horizontal
To produce interference fringes, and then to perform a normal development process, the third hologram 1 ₃ is a photosensitive material such as a photopolymer having a size to be attached to the bottom of the cover.
The light from an argon laser light source that oscillates blue light having a wavelength of 488 nm is divided into two by an optical system (not shown),
Incident angles from different directions are 54.3 from above.
Divergence of 0 ° from the horizontal direction (focal length = 316.3
mm) and 60 ° from the top and 0 ° from the horizontal direction to irradiate parallel light to form interference fringes, and then perform normal development processing.

The first hologram 1 ₁ , the second hologram 1 ₂ , and the third hologram 1 ₃ thus obtained are attached to a transparent plate 2 such as a transparent plate glass, and the lamp cover 3 is attached. The luminaire 6 is manufactured by mounting it on a stand 5 together with a light source 4 such as an incandescent lamp.

When the light source of such a luminaire is turned on,
White light L diverges in all directions and illuminates downward as direct light.
The spot is irradiated. On the other hand, hologram 1₁1₂1₃To
The irradiated light L is the hologram 1₁Is the green light L₁age
And hologram 1₂Is red light L₂As hologram 1
₃Is the blue light L ₃As for each parallel light,
Light that is emitted but not diffracted is divergent.
L₁′ (Purple which is a complementary color of green), divergent light L₂’(Red
Complementary light blue), divergent light L₃’(Yellow, which is the complementary color of blue
(Color) transmitted to the outside of the cover 3 and
Can see different colors.

Embodiment 2 With reference to FIG. 2, an example of an illumination lamp cover suspended from a ceiling or the like for use will be described.

The hologram is obtained by first splitting light from an argon laser light source that oscillates a green light having a wavelength of 528 nm into two by a light-sensitive material such as a photopolymer having a size to be attached to a cover, from a different direction. Divergence light (focal length = 250 mm) with an incident angle of 0 ° from above and 0 ° from the horizontal direction, and 30 ° from above,
Forming interference fringes by irradiating parallel light of 0 ° from the horizontal direction,
Then, a normal development process is performed to produce the hologram 1.

The hologram 1 thus obtained is attached to a transparent plate 2 such as a transparent plate glass to prepare a lamp cover 3, which is attached to a lighting device 6 together with a light source 4 such as an incandescent lamp.

When the light source of such a lighting device is turned on,
The white light L diverges in all directions, and is radiated downward as direct light to the illuminated portion. On the other hand, the light L applied to the hologram 1 is green light L ₁ , L ₂ , and L ₃ , and parallel light is diffracted and reflected downward, but the light that is not diffracted is divergent light L ₁ ′, As divergent light L ₂ 'and divergent light L ₃ ',
In both cases, purple light, which is a complementary color of green, is transmitted to the outside of the cover 3.

The preferred examples have been described above, but the present invention is not limited to these, and various applications are possible. Regarding the hologram, in the embodiment, the explanation was made by exposing the whole of the individual hologram with a monochromatic color, but multiple exposure of a stereoscopic image etc. is possible, and the stereoscopic image can be visually recognized from the outside of the illumination cover. By changing the angle, you can make it impossible to see anything, and you can also record multiple stereoscopic images so that you can see different stereoscopic images depending on the viewing angle. A hologram may be subjected to multiple exposure of a stereoscopic image, but a reflective or transmissive hologram having a stereoscopic image recorded thereon may be attached to another photosensitive material in an overlapping manner. In addition to exposing with diverging light and parallel light, exposing with parallel light and parallel light allows different colors to appear depending on the viewing angle.

Further, the cover for illumination has been described in the embodiment with the structure in which the hologram is attached to the single plate glass. However, instead of the single plate glass, a transparent resin such as polycarbonate can be adopted and is not necessarily transparent. It may be an opaque plate or a translucent plate that transmits light. Further, the structure is not limited to a single transparent plate, and may be a laminated structure in which two plate glasses or the like are adhered with an interlayer film such as polyvinyl butyral.

Further, the shape of the cover may be a glove shape covering the whole, but it has a structure in which the lower side is opened, and the cover can be visually recognized from the area other than the illuminated portion without directly going through the light source. Such a structure is preferable because the decorative effect is further enhanced.

As a light source for illumination, a spherical light source such as an incandescent light bulb can be preferably used.

[0022]

The illumination cover of the present invention can reduce the absorption of light by the cover, so that the outside can be made relatively bright, and the diffracted light by the hologram and the transmitted light satisfy the complementary color relationship. Since it can be made to appear in different colors, it is possible to expect a unique decorative effect not found in conventional lighting covers.

Further, when the hologram is exposed by changing the angle of the reference light, or by using the hologram in which both the reference light and the object light are exposed by parallel light, it is possible to make the colors, images, etc. look different depending on the viewing angle. You can also

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a lamp cover according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing a lamp cover according to a second embodiment of the present invention.

[Explanation of symbols]

 1 Hologram 2 Light-transmitting plate 3 Lamp cover 4 Light source 6 Lighting equipment

Claims (1)

[Claims] 1. A lamp cover for covering a light source for illumination, wherein the lamp cover is constituted by a hologram plate formed by attaching a reflection hologram to a translucent plate. cover.