JPH09179041A - Color developing device by combination of optically anisotropic material and light source - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate chromatic light by arranging a third light transmissive plate of optical anisotropic material having, for example, an optical rotary power, etc., between two polarizing plates. SOLUTION: A color developing device or projecting device which generates various beautiful chromo-light by arranging an optical anisotropic material such as a polarizing plate 2, refraction plate, an optical rotary plate 3, etc., and utilizing physical phenomena such as deflection, refraction, interference, etc., in a path of a light beam emitted from a single or plural light sources 1. For example, on a display of a subway map, a projection screen 4 is made transparent, and a section sliced off a raw material of the polarizing plate 2 is sequentially stuck on in the direction in which the subway line is headed. And when a section is sliced off the raw material of the polarizing plate 2, the angle of deflection plane is slightly changed sequentially. Thus, when a power supply source is switched on, turning on the light source 1 to rotate a motor 6, the subway line part emits beautiful light in a fantastic color tone and changes in the color tone as if it is flowing, and expresses a feeling of flowing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display, a signboard, and other optical devices.

[0002]

2. Description of the Related Art Conventionally, in the field of displays, there have been devices for generating shadows by combining a plurality of polarizing plates and generating a feeling of fluidity by changing the positions and angles of the polarizing plates. However, this method could not generate colored light.

[0003]

SUMMARY OF THE INVENTION The present invention enables the generation of colored light, which was not possible with the conventional methods, but was not possible.

[0004]

In the present invention, for example, a third light-transmissive plate is arranged between two polarizing plates in the conventional method. Thus, the third plate is made of a material having optical anisotropy such as optical rotation (left-handedness or right-handedness),
The thickness is appropriately selected according to the wavelength of the light source used.
(For example, 1/4 lambda) By doing so, a unique and beautiful fantastic color light is generated due to the mutual angle of the two polarizing plates and the relative angle of the third plate.

[0005]

Most of the compounds whose molecular structure does not match their mirror image (asymmetrical) rotate left or right when light passes through it. This is called levorotatory or dextrorotatory, but many organic substances have optical rotatory properties, and Rochelle salt (Na, K compound of tartaric acid) is famous as the beginning of the discovery of this phenomenon. By the way, the rotation angle of Rochelle salt is about 30 degrees per 10 cm in yellow light. It is considered that specific color light is expressed by the interference of light due to the optical rotation phenomenon and the polarization phenomenon, but it is hard to say that all of them have been theoretically clarified yet, and the inventors are conducting research. However, we believe that the discovery of this phenomenon has considerable significance, and we are promoting research on its application to a wide range of industries.

[0006]

Embodiment An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a diagram showing the structure of an embodiment of a subway map display device according to the present invention. In the figure, 1 is a light source (daylight fluorescent lamp), 2 is a polarizing plate, 3 is a rotatory plate, 4 is a display projection surface, 5 is an outer box, 6 is a motor, and 7 is a rotating shaft. Faced to each other, the two polarizing plates and the three optical rotation plates are connected to the seven rotation shafts. Further, another polarizing plate is attached to the functional portion of the projection surface. The functional portion is a portion that has a special purpose such as color development of only that portion, or expressing a feeling of fluidity only in that portion so as to express it intensively. In the present embodiment, the subway line portion is the functional portion. The projection surface of this part is made transparent, and the pieces cut out from the raw material of the polarizing plate are sequentially attached thereto according to the traveling direction of the subway. Then, when the sliced piece is cut out from the raw material of the polarizing plate, the angle of its polarization plane is sequentially shifted little by little as shown in FIG. Thus, when the power is turned on, the light source is turned on, and the motor is rotated, the functional parts beautifully emit light in a fantastic color tone, and as the color tone sequentially changes, a fluid feeling is expressed. As the material for the optical rotator, a thin plate of polycarbonate resin processed anisotropically was used.

[0007]

EFFECTS OF THE INVENTION It is a revolutionary effect for the display technology that the use of the present invention can create a fantastic and beautiful colored light, and can change the color tone of the developed color and create a fluid feeling. There is.

[Brief description of the drawings]

FIG. 1 is a drawing showing an example of the configuration of an apparatus using the present invention.

FIG. 2 is a diagram illustrating how to cut the material removal of the polarizing plate used in the examples of the present invention.

[Explanation of symbols]

 1 Light source (daylight fluorescent lamp) 2 Polarizing plate 3 Optical rotation plate 4 Display (projection plate) 5 Case (outer box) 6 Motor 7 Rotation axis 8 Functional part

Claims (2)

[Claims] 1. An optical anisotropic substance such as a polarizing plate, a refraction plate, and an optical rotatory plate is arranged in a path through which a beam of light emitted from a single light source or a plurality of light sources passes, and physical properties such as polarization, refraction and interference are provided. A device that applies a phenomenon to generate or project various beautiful colored lights. 2. A polarizing plate, a refraction plate,
A technique or device for changing the relative angle of the optical rotatory plate or rotating one or more of them to change the colored light of the color or express a feeling of fluidity.