JP2000036211A - Light scattering lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control freely the hue, tone and color transparency with respect to the light scattering on the irradiated surface of a dispersed liquid crystal shutter by variably and correlatively controlling the light irradiation and the diffusing liquid crystal shutter. SOLUTION: A correlation with a light irradiation part housing 2 wherein a filter 5 having three color wave lengths such as red, blue and green is installed in a turret-like form in a white light source 8 and a synchronous rotation position sensor 7 is so installed in a turret 6 as to be rotated is so performed by a synchronous control part 3 to control the opening-closing and transmittance of a dispersed liquid crystal shutter 1 so as to provide a desired illumination color when a light ray correlated with the rotation position sensor 7 is irradiated that an illumination color can freely be provided. For instance, if the liquid crystal is closed synchronously only with the red light irradiation, the liquid crystal surface scatters red light while blue and green light rays are passed, so that red scattered light is left. In addition, the tone of the light, scattering color and arbitrary color light scattering including transparency can freely be provided by controlling the closing time of the dispersed liquid crystal shutter 1 and the control voltage of the scattering liquid crystal.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention synchronizes a liquid crystal shutter with light radiated in a plurality of light beams having different wavelengths, such as red, blue, and green, in a time-series manner, and scatters light in the liquid crystal shutter for how long when irradiating any light color. In this way, it is possible to obtain a light blocking effect that has a transparent color, a white color, and a freely scattered illumination color from transparent to transparent.In addition, the control of the transmittance by changing the control voltage of the dispersed liquid crystal and the opening and closing time of the shutter It is possible to change even the color density by the control means and obtain a transparent light scattering illumination color.

As shown in FIG. 1, for example, a white light source is provided with a color filter of red, blue, green or the like in a turret shape, and a rotation position sensor is provided in the turret to rotate the light irradiation section and the rotation position sensor. The synchronization control unit that controls the opening and closing of the dispersed liquid crystal shutter and the transmittance so that the desired illumination color is obtained when the light beam is emitted are correlated so that the illumination color can be freely obtained. When the liquid crystal is closed, the liquid crystal surface is scattered red, and the blue and green rays are transmitted and only the red scattered light remains.In addition, by controlling the closing time of the dispersed liquid crystal shutter and the control voltage of the dispersed liquid crystal. Light scattering color density and light scattering of any color can be freely obtained including transparency.

FIG. 2 shows an embodiment in which a plurality of light sources having different wavelengths are used as light sources of a light irradiation unit and irradiation is performed in a time series while being electrically switched.

FIG. 3 shows an example in which a beam irradiating device is used and a large light scattering illuminating device for a remote area is used. The arrangement relationship between the irradiating section and the dispersed liquid crystal shutter is effective as long as it is illuminated even if it is remotely located. Also, the dispersed liquid crystal shutter is currently about 1 m wide and 20 m long, etc. It is sold by Nippon Sheet Glass Co., Ltd. under the trade name "um" in a sandal structure. By using these, a beam irradiation device that irradiates light beams with different wavelengths, such as RGB, in chronological order can be used to create a very large remote area. It can be widely used for color lighting.

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention when a light irradiation unit is a turret.

FIG. 2 is an embodiment of the present invention in a case where the light irradiation unit is a plurality of light sources.

FIG. 3 is an embodiment of the present invention when the light irradiating unit is a beam light source.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Dispersion liquid-crystal shutter 2 Light irradiation part housing 3 Synchronous control part 4 Turret rotation motor 5 Red, blue, green three-color wavelength filter 6 Turret 7 Synchronous rotation position sensor 8 Light source 9 Transmittance variable knob 10 Wavelength filter red irradiation time Variable knob for dispersion liquid crystal control correlated to 11 Variable knob for dispersion liquid crystal control correlated to the irradiation time of blue wavelength filter 12 Variable knob for dispersion liquid crystal control correlated to the irradiation time of blue wavelength filter 13 Turret wavelength filter red irradiation timing 14 Turret Irradiation timing of wavelength filter blue 15 Turret wavelength filter Green irradiation timing 16 Turret wavelength filter Synchronized signal of irradiation time of red, blue and green 17 Dispersion liquid crystal shutter control signal adjusted and controlled to a desired value 18 Beam irradiation lens 19 light source Power supply to

Claims (2)

[Claims] 1. A light irradiator for irradiating light beams having different wavelengths such as RGB in a time series, and a dispersed liquid crystal functioning to transmit, scatter, and vary the transmittance of the light beams in correlation with the irradiated light. A shutter section, a synchronization control section for variably controlling the light irradiation section and the dispersion liquid crystal shutter section, and irradiating light of the dispersion liquid crystal shutter surface irradiated by variably controlling the light irradiation and the dispersion liquid crystal shutter in correlation with each other. Light scattering illuminator that makes it possible to adjust hue, density and color transparency for scattering. 2. A synchronization control unit that automatically controls by an external signal such as an external storage device, a sequencer, or a sound or an ambient lighting atmosphere to vary the toning and the color transparency of light scattering on the dispersed liquid crystal shutter surface. 2. The light scattering illumination device according to claim 1, wherein