KR20130002961A - Apparatus for displaying color-change by menas of polarization - Google Patents

Abstract

PURPOSE: A color changing device using polarization is provided to show the change of a color by a polarization unit exposed to the outside. CONSTITUTION: A color changing device(1000a) has a case(4). A first polarization unit(10) is installed in the case. A double refraction medium(20) is arranged on the rear of the first polarization unit in the case. A second polarization unit(30) is arranged in the rear of the double refraction medium in the case. A part of the first polarization unit, the double refraction medium and the second polarization unit is rotatably installed in the case and the rest is fixed to the case.

Description

Apparatus for displaying color-change by menas of polarization

The present invention relates to a color changing apparatus using polarization, and more particularly, to a color changing apparatus displaying a color change using polarization and birefringence. The color changing apparatus according to the present invention can be applied to various indicators, advertisements, signs, outdoor decorations of buildings, interiors or decorations.

Polarization phenomenon means that the direction of the electric and magnetic fields is constant in any plane perpendicular to the traveling direction as light passes through the polarizer. A typical example of such a polarization phenomenon is that when two polarizers are arranged so that their polarization directions are perpendicular to each other and light is transmitted, there is no transmission of light.

The polarization phenomenon may be used to have polarization in a predetermined direction with respect to light, or the polarized light may be passed through a birefringent medium such as a birefringent film to have different polarization directions according to wavelengths.

In connection with representing a change in color using polarization, LCDs can be considered. In essence, LCD displays the light by applying the voltage to the liquid crystal between two polarizers and adjusting the polarization direction of the light to determine whether the light is transmitted. The color appears depends on the color of the color filter or backlight light source. do.

The present inventors have invented a color change device using polarized light which can be variously applied for indicators, advertisements, signs, outdoor decorations of buildings, interiors or decorations by displaying a change in color through driving of polarizing means or birefringence medium.

An object of the present invention is to provide a color change device using polarized light that can be used as an indicator, advertising, signage, outdoor decoration of the building, interior or decoration by displaying the change of color through the driving of the polarizing means or the birefringent medium.

It is also an object of the present invention to provide a color changing device that creates a new aesthetic by showing darker portions except for the portion where the color change is made while the change of color is exposed.

An object of the present invention, in another aspect, to provide an indicator that the change in color is exposed to the outside in accordance with the movement of the indicator means in the indicator (indicator) indicating the value, such as instrument panel or clock.

It is further an object of the present invention to provide an indicator that creates a new aesthetic by showing a dark part except for a part where a color change is made while the color change is seen by the movement of the indicating means.

In another aspect, it is an object of the present invention to provide a color changing device in which the polarization means and the birefringence medium rotate as one or are changed in color by their constant velocity motion.

On the other hand, the present invention is to provide a color changing device that changes color depending on the position of the eye of the viewer.

The first invention of the patent application is a case; First polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the first polarizing means in the case; Second polarization means disposed behind the birefringent medium in the case; Wherein the first polarization means, the birefringence medium, and the second polarization means are one or any two or both of which are rotatably installed in the case, and the other is fixedly installed when only a portion thereof is rotatably installed; The first polarizing means, the birefringent medium and the second polarizing means rotate relative to each other by driving all or a part of the first polarizing means, the birefringent medium and the second polarizing means rotatably installed. It comprises a drive mechanism to; When the first polarization means, the birefringence medium and the second polarization means rotate relative to each other according to the driving of the driving mechanism, a change in color is seen through the first polarization means exposed to the outside of the case. The present invention provides a color changing device using polarized light.

According to the present invention, the rotation of the first polarization means, the birefringence medium and the second polarization means relative to each other by the drive mechanism is a relative rotation of the first polarization means and the birefringence medium and the first When the polarizing means is stopped; Here, the relative rotation of the first polarizing means and the birefringent medium includes a case in which any one of them is stopped and the other one rotates, and when both of them rotate, the rotation speed is different, the birefringence When the medium and the second polarization means make a relative rotation and the first polarization means is stopped; Here, the relative rotation of the birefringent medium and the second polarizing means includes a case in which any one of them is stopped and the other rotates, and when both of them rotate, the rotation speed is different. When the first polarizing means and the second polarizing means make a relative rotation and the birefringence medium is stopped; Here, the relative rotation of the first polarizing means and the second polarizing means includes a case in which any one of them is stopped and the other rotates, and all of them to rotate the rotation speed is different, The first polarization means, the birefringence medium and the second polarization means all rotate, and their rotation speeds are all different from each other; When the first polarization means and the birefringence medium rotate together and the second polarization means is stopped; Here, when the first polarization means and the birefringence medium is rotated together, they include the case where they rotate at constant speed and the first polarization means and the birefringence medium are combined with each other to rotate integrally, the birefringence medium And the second polarization means rotate together and the first polarization means is stopped; Here, when the birefringence medium and the second polarization means are rotated together, they include a case where they rotate at constant speed and a case where the birefringence medium and the second polarization means are combined with each other and integrally rotated. When the polarization means and the second polarization means rotate together and the birefringence medium is stopped; Here, the case where the first polarization means and the second polarization means are rotated together includes a case where they rotate at a constant speed and a case where the first polarization means and the second polarization means are connected to each other and integrally rotated. Wherein the first polarization means or the birefringence medium or the second polarization means are stopped when they are fixedly installed and stopped in the case, and they are rotatably installed in the case and the drive mechanism It includes a case where it is stopped by not driven by.

According to the first invention of the present patent application, the first polarization means is adjacent to each other made of a plurality of zones of different polarization direction, or the birefringence medium adjacent to each other a plurality of zones having different birefringence characteristics It may be made of, or having a birefringence characteristic that is not uniform over the whole or a part, or the second polarization means is adjacent to each other may be composed of a plurality of zones having different polarization directions.

According to the first invention of the present patent application, the color changing device using the polarized light can be used for indicators, advertisements, signs, outdoor decoration of the building, interior or decoration.

The second invention of this patent application is the case; First polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the first polarizing means in the case; Second polarization means disposed behind the birefringent medium in the case; Here, the first polarizing means and the second polarizing means are fixedly installed in the case, the birefringence medium is rotatably installed in the case, both the first polarizing means and the second polarizing means are linearly polarized Means, or both circularly polarizing means including linearly polarizing means and a retardation plate. If the first polarizing means and the second polarizing means are linearly polarizing means, the polarization directions have a difference between 80 ° and 100 °, and preferably have a difference of 90 °. And the second polarization means is circular polarization means, one of which is left circular polarization means and the other is right circular polarization means, and the phase difference of each retardation plate included in these two circular polarization means is 4 minutes at each quarter wavelength. It has a value between the minus 10% of the wavelength and the quarter wave plus 10% of the quarter wave, and preferably the quarter wave. It comprises a drive mechanism for rotating the birefringent medium; When the birefringence medium is rotated according to the driving of the driving mechanism, the color change of the birefringence medium is visible while the remaining portions except the birefringence medium are dark through the first polarizing means. Provide a device.

According to the second invention of the present patent application, a plurality of the birefringence medium is disposed sequentially and they are preferably made to rotate relative to each other by the drive mechanism.

According to the second invention of the present patent application, the birefringence medium, all or part thereof adjacent to each other may be composed of a plurality of zones having different birefringence characteristics or may have non-uniform birefringence characteristics over the whole or part. .

According to the second invention of the present patent application, the color changing device is an indicator indicating and displaying a specific value, and the birefringence medium may form an indication means for indicating a specific value.

According to the second invention of the present patent application, the color changing device is a watch, and the plurality of birefringence media may form a watch needle of the watch.

The third invention of the patent application is a case; Polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the polarizing means in the case; A reflection member disposed behind the birefringence medium in the case; Here, the polarizing means and the birefringence medium is installed in the case one or both of which is rotatable, when one is rotatably installed the other is fixed; And a driving mechanism for driving all or part of the polarization means and the birefringence medium rotatably installed to drive the polarization means and the birefringence medium to rotate relatively to each other; Here, the relative rotation of the polarizing means and the birefringent medium includes a case in which any one of them is stopped and the other is rotated, and all of them are rotated, the rotation speed is different, the polarization means or The stopping of the birefringence medium includes the case where they are fixedly installed in the case and stopped, and when they are rotatably installed in the case and are not driven by the driving mechanism; According to the driving mechanism when the polarizing means and the birefringent medium makes a relative rotation with each other provides a color change device using polarized light characterized in that the change in color is seen through the polarizing means exposed to the outside of the case.

According to the third invention of the present patent application, the polarizing means is adjacent to each other made of a plurality of zones of different polarization direction, or the birefringence medium is adjacent to each other made of a plurality of zones with different birefringence characteristics It may have a birefringence characteristic or non-uniformity in whole or in part.

According to the third invention of the present patent application, the color changing device using the polarized light can be used for indicators, advertisements, signs, outdoor decoration, interior or decoration of buildings.

The fourth invention of the present patent application is the case; Circular polarization means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the polarizing means in the case; A reflection member disposed behind the birefringence medium in the case; Here, the circularly polarized means is fixedly installed in the case, the birefringent medium is rotatably installed in the case, the birefringent medium comprises a drive mechanism for rotating; When the birefringence medium rotates according to the driving of the driving mechanism, the remaining portion except for the birefringence medium is dark through the circularly polarized means, and the change in color due to the rotation of the birefringence medium is visible. Provide color changing device.

According to the fourth invention of the present patent application, a plurality of birefringent media are sequentially arranged and they can achieve relative rotation with each other by the driving mechanism.

According to the fourth invention of the present patent application, the birefringence medium adjacent to each other may be composed of a plurality of zones having different birefringence characteristics or may have non-uniform birefringence characteristics over the whole or part.

A fifth invention of the present patent application includes a case; Indicating means installed in the case and exposed to the outside, the value indicating the value; First polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the first polarizing means; Second polarization means disposed behind the birefringent medium; Wherein the first polarization means, the birefringence medium, and the second polarization means are one or any two or both of which are rotatably installed in the case, and the other is fixedly installed when only a portion thereof is rotatably installed; The first polarizing means, the birefringence medium and the second polarizing means are driven by driving all or part of the first polarizing means, the birefringent medium, and the second polarizing means rotatably in conjunction with the indicating means. It comprises a drive mechanism for making the rotation relative to each other in conjunction with the movement of the indicating means; According to the movement of the indicator means provides an indicator using polarization, characterized in that the change in color is seen through the first polarization means exposed to the outside of the case.

According to the fifth invention of the present patent application, the first polarization means is adjacent to each other is composed of a plurality of zones having different polarization directions, or the birefringence medium is adjacent to each other a plurality of zones having different birefringence characteristics It may be made of, or having a birefringence characteristic that is not uniform over the whole or part, or the second polarization means is adjacent to each other may be composed of a plurality of zones different in polarization direction.

According to the fifth invention of the present patent application, a front surface of the case may be formed with a display unit for displaying the value indicated.

According to the fifth invention of the present patent application, a cavity may be formed on the front surface of the case to expose the first polarization means.

The sixth invention of the present patent application includes a case; Indicating means installed in the case and exposed to the outside, the value indicating the value; Polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the polarizing means; A reflection member disposed behind the birefringence medium; Wherein the polarizing means and the birefringence medium are rotatably installed in one or both of the polarization means, and the other is fixedly installed when only a part thereof is rotatably installed; Driving all or part of the polarizing means and the birefringent medium rotatably installed in conjunction with the indicating means to rotate the polarizing means and the birefringent medium in conjunction with the movement of the indicating means to make a relatively rotation with each other Including a drive mechanism; According to the movement of the indicating means provides an indicator using polarization, characterized in that the change in color is seen through the polarizing means exposed to the outside of the case.

According to the sixth invention of the present patent application, the polarizing means is composed of a plurality of zones having mutually different polarization directions, or adjacent to each other, or the birefringence medium is composed of a plurality of zones having different birefringence characteristics. It may have a birefringence characteristic or non-uniformity in whole or in part.

According to the sixth invention of the present patent application, the front of the case may be formed with a display unit for displaying the value indicated.

According to the sixth invention of the present patent application, a cavity may be formed on the front surface of the case to expose the polarization means.

The seventh invention of the present patent application includes a case; Indicating means installed in the case and indicating a value as being exposed to the outside of the case; Wherein the indicating means has polarizing means, and the polarizing means of the indicating means constitutes the first polarizing means; A birefringent medium disposed behind the first polarizing means in the case; Second polarization means disposed behind the birefringent medium in the case; It comprises a drive mechanism for driving the indicating means; When the indicating means is driven by the driving mechanism, the first polarization means of the indicator means that the change in color is provided according to the drive provides an indicator using polarization.

According to the seventh invention of the present patent application, the first polarization means is adjacent to each other is composed of a plurality of zones of different polarization direction, or the birefringence medium is adjacent to each other a plurality of zones having different birefringence characteristics It may be made of, or having a birefringence characteristic that is not uniform over the whole or a part, or the second polarization means is adjacent to each other may be composed of a plurality of zones having different polarization directions.

According to the seventh invention of the present patent application, the front of the case may be formed with a display unit for displaying the value indicated.

According to the seventh invention of the present patent application, a cavity may be formed on the front surface of the case to expose the first polarization means.

An eighth invention of the present patent application includes a case; Indicating means installed in the case and indicating a value as being exposed to the outside of the case; Here, the indicating means has a polarizing means, and the birefringent medium disposed behind the polarizing means in the case; A reflection member disposed behind the birefringence medium in the case; It comprises a drive mechanism for driving the indicating means; When the indicator means is driven in accordance with the drive of the drive mechanism provides a indicator using polarization, characterized in that the change in color is seen in the polarizing means of the indicator means according to the drive.

According to the eighth invention of the present patent application, the polarization means is composed of a plurality of zones having mutually different polarization directions, or the birefringence medium is composed of a plurality of zones having different birefringence characteristics. It may have a birefringence characteristic or non-uniformity in whole or in part.

According to the eighth invention of the present patent application, the front of the case may be formed with a display unit for displaying the value indicated.

According to the eighth invention of the present patent application, a cavity may be formed on the front surface of the case to expose the indicating means.

A ninth invention of the present patent application includes a case; Indicating means installed in the case and indicating a value as being exposed to the outside of the case; Wherein the indicating means has a polarizing means and a birefringent medium attached to the rear surface of the polarizing means, and the polarizing means of the indicating means constitutes the first polarizing means; Second polarizing means disposed behind the indicating means in the case; It comprises a drive mechanism for driving the indicating means; When the indicating means is driven by the driving mechanism, the first polarization means of the indicator means that the change in color is provided according to the drive provides an indicator using polarization.

According to the ninth invention of the present patent application, the first polarization means is adjacent to each other is composed of a plurality of zones of different polarization directions, or the birefringence medium is adjacent to each other a plurality of zones having different birefringence characteristics It may be made of, or having a birefringence characteristic that is not uniform over the whole or part, or the second polarization means is adjacent to each other may be composed of a plurality of zones having different polarization directions.

According to the ninth invention of the present patent application, the front of the case may be formed with a display unit for displaying the value indicated.

According to the ninth invention of the present patent application, a cavity may be formed on the front surface of the case to expose the first polarization means.

The tenth invention of the present patent application is the case; First polarizing means installed to be exposed to the case; Indicating means for indicating a value as disposed behind the first polarizing means in the case and being exposed to the outside through the first polarizing means; Wherein the indicating means has a birefringent medium; Second polarizing means disposed behind the indicating means in the case; It comprises a drive mechanism for driving the indicating means; When the indicator means is driven in accordance with the drive of the drive mechanism provides a indicator using polarization, characterized in that the change in color is seen through the first polarization means exposed to the case in accordance with the drive.

According to the tenth invention of the present patent application, a plurality of the instructing means are arranged in sequence and they can achieve relative rotation with each other by the driving mechanism.

According to the tenth invention of the present patent application, the birefringence medium adjacent to each other may be composed of a plurality of zones having different birefringence characteristics or may have non-uniform birefringence characteristics over the whole or part.

According to the tenth invention of the present patent application, the birefringence medium adjacent to each other may be composed of a plurality of zones having different birefringence characteristics or may have non-uniform birefringence characteristics over the whole or part.

According to the tenth invention of the present patent application, the first polarizing means and the second polarizing means are both linear polarizing means, or both are circular polarizing means comprising a linear polarizing means and a phase difference plate. If the first polarizing means and the second polarizing means are linearly polarizing means, the polarization directions have a difference between 80 ° and 100 °, and preferably have a difference of 90 °. And the second polarizing means are circularly polarizing means, one of which is left circularly polarizing means and the other is right circularly polarizing means, and the phase difference of each phase difference plate included in these two circularly polarizing means is 4 minutes at each quarter wavelength. It can have a value between the minus 10% of the wavelength and the quarter wave plus 10% of the quarter wave, and preferably the quarter wave. have.

The eleventh invention of the present patent application includes a case; First polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the first polarizing means in the case; Second polarization means disposed behind the birefringent medium in the case; Wherein the first polarization means, the birefringence medium and the second polarization means are all rotatably installed in the case; And a driving mechanism for rotating both the first polarization means, the birefringence medium, and the second polarization means at constant speed; When the first polarizing means, the birefringent medium and the second polarizing means rotate at a constant speed according to the driving of the drive mechanism, the change in color is seen through the first polarizing means exposed to the outside of the case. Provides a color change device using polarization.

The twelfth invention of the present patent application includes a case; First polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the first polarizing means in the case; Second polarization means disposed behind the birefringent medium in the case; Here, the first polarizing means, the birefringent medium and the second polarizing means are all rotatably coupled to each other in the case; And a driving mechanism for rotating the integrally coupled first polarizing means, the birefringent medium, and the second polarizing means; When the first polarization means, the birefringence medium and the second polarization means are integrally rotated according to the driving of the driving mechanism, a change in color is seen through the first polarization means exposed to the outside of the case. Provides a color change device using polarization.

The thirteenth invention of this patent application relates to a case; Polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the polarizing means in the case; A reflection member disposed behind the birefringence medium in the case; Here, both the polarizing means and the birefringent medium is rotatably installed, and comprises a drive mechanism for rotating the polarizing means and the birefringent medium at a constant speed; When the polarization means and the birefringent medium is rotated at a constant speed in accordance with the drive of the drive mechanism provides a color change device using polarized light characterized in that the change in color is seen through the polarizing means exposed to the outside of the case.

Fourteenth invention of the present patent application includes a case; Polarizing means installed in the case and exposed to the outside of the case; A birefringent medium disposed behind the polarizing means in the case; A reflection member disposed behind the birefringence medium in the case; Here, the polarizing means and the birefringence medium is integrally coupled and rotatably installed, the polarizing means and the birefringence medium comprises a driving mechanism for rotating the integrally coupled polarization means and the birefringence medium; When the polarization means and the birefringence medium is integrally rotated in accordance with the drive of the drive mechanism provides a color change device using polarized light, characterized in that the change in color is seen through the polarizing means exposed to the outside of the case.

The fifteenth invention of the present patent application has a birefringence characterized in that a birefringent medium is attached to a transparent medium having no birefringence, or a birefringent medium is inserted between the transparent medium having no birefringence. Provide the medium.

The present invention provides a color changing apparatus in which the polarization means and the birefringence medium rotate relative to each other according to the driving of the driving mechanism, and thus the color change is visible through the polarization means exposed to the outside.

Such a color changing device according to the present invention, on the one hand, the other parts except for this part in the gown that the color change is made dark to create a new aesthetics such as a strong color change can be produced and attention, etc. It can be greatly increased.

The present invention also provides an indicator in which a change in color is displayed according to the movement of the indicating means, whereby the movement of the indicating means can be recognized in accordance with the change in color.

Such an indicator according to the present invention creates a new aesthetic, such as the color change is strongly produced except for the part where the color change is made while producing the color change according to the movement of the indicating means, and greatly increases the attention. It can be increased.

Furthermore, according to the color changing device or the indicator according to the present invention, the polarization means or the birefringence medium forms zones with different polarization directions or different birefringence characteristics, so that these zones overlap with each other or with these zones. As a result, color change and shape or shape change can be produced.

On the other hand, in the color changing apparatus or indicator according to the present invention, the birefringence medium may be used in which the birefringence characteristics are not uniform at all or throughout, and in this case, the color appears different according to the non-uniform birefringence characteristics and the change is also made. Will be different.

On the other hand, according to the present invention, the polarizing means and the birefringent medium is provided as a color change device that is rotated as a single body or they change color by the constant velocity movement.

On the other hand, according to the present invention, the color is changed by changing the position of the viewer in accordance with the present invention provides a color changing device.

Figure 1a is a view showing an example of the color changing apparatus according to the present invention using the linear polarizing means;
1B is a view showing an example of a color changing device according to the present invention using circular polarization means;
2 shows an example in which the first polarizing means, the birefringence medium, and the second polarizing means are all rotatably installed in the case and all of them are connected to the driving mechanism and relatively rotated with each other in the color changing apparatus according to the present invention. drawing;
3 is a view showing an example of a color changing apparatus using the polarizing means, the birefringence medium and the reflection member of the present invention;
4 is a view showing a case in which the first polarization means are adjacent to each other in the color changing apparatus according to the present invention, which is composed of a plurality of zones having different polarization directions and used as a signboard;
5 shows that the first polarization means, the birefringence medium, or the second polarization means are adjacent to each other in the color changing apparatus according to the present invention, and are composed of a plurality of zones having different polarization directions or different birefringence characteristics. A view showing a case where the medium and the second polarization means make a change in shape or shape along with a change in color depending on the area of these areas or when the areas overlap with each other while making a relative rotation with each other;
6 shows that the first polarizing means, the birefringence medium or the second polarizing means are adjacent to each other in the color changing apparatus according to the present invention, and each of the first and second polarizing means is composed of a plurality of zones having different polarization directions or different birefringence characteristics. Forming a picture, the first polarizing means, the birefringence medium and the second polarizing means are made to rotate relative to each other, these areas show the case of the color change in accordance with the shape or the picture as the movement overlaps each other ;
Figures 7a, 7b and 8 show the case applied to the watch as an example of the indicator according to the invention;
9A, 9B, 10A and 10B show a case where an example of an indicator according to the present invention is applied to an input device such as a speaker volume;
11 is a view showing a case in which the birefringent medium is rotated as an indication means in the indicator according to the present invention to produce a change in color, except for the portion where the change in color is made dark;
FIG. 12 is a view illustrating a case in which the hands of the birefringent medium having the birefringence medium do not overlap or overlap with each other in the example of FIG. 11;
Figure 13 is adjacent to each other in the color changing apparatus according to the present invention is a plurality of birefringent medium having a plurality of zones having different birefringence characteristics are sequentially arranged, these sequentially arranged birefringent media are made to rotate relative to each other According to the situation where these zones overlap with each other, while showing a change in color, shape, or form, except for the portion where the color change is made;
14 is a view showing a case in which the peripheral portion is dark while the circular polarization means, the birefringence medium and the reflection member are arranged in accordance with the rotation of the birefringence medium is produced according to the present invention;
15 is a view showing an example of a constant velocity rotating mechanism in which the polarization means and the birefringence medium rotate at constant speed to change color according to the present invention; And,
FIG. 16 is a view showing a case in which a birefringent medium is formed by attaching a birefringent medium to a birefringent transparent medium or between a birefringent transparent medium and a birefringent medium.

Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

1A and 1B are diagrams showing an example of color changing apparatuses 1000a and 1000b according to the present invention.

First, referring to FIG. 1A, the color changing apparatus 1000a has a case 4, and the first polarizing means 10 is installed in the case 4, and is rearward of the first polarizing means 10. The birefringence medium 20 is disposed therein, and the second polarization means 30 is disposed behind the birefringence medium 20.

The polarization means applied in the inventions disclosed throughout this specification includes both linear polarization means and circular polarization means. That is, as will be described later, the arrangement constituting the most essential configuration in the inventions disclosed throughout the specification consists of the first polarizing means 10-birefringent medium 20-the second polarizing means 30 or The polarizing means 10-birefringence medium 20-reflecting member 80 may be divided into cases, in which case the first polarization means 10-birefringence medium 20-the second polarization means 30 In this case, the first polarizing means 10 and the second polarizing means 30 are both linearly polarizing means or both circularly polarizing means.

The circularly polarized means may be formed by combining the linearly polarized means 10L and 30L and the phase difference (phase delay) plates 10P and 30P. In this case, the first polarized means 10 comprising the circularly polarized means is a linearly polarized means ( The phase difference plate 10P is coupled to the rear surface of 10L, and the second polarization means 30 formed of circular polarization means is a phase difference plate 30P coupled to the front surface of the linear polarization means 30L.

In addition, when the polarizing means 10-birefringent medium 20-reflecting member 80 is arranged, the polarizing means 10 may be linearly polarizing means or circularly polarizing means. In this case, the polarization means 10 formed of circular polarization means is formed by coupling the phase difference plate 10P to the rear surface of the linear polarization means 10L. (On the other hand, in this case, except for the birefringence medium 20, the darkening characteristic is shown. See FIG. 14 and related technology.)

However, the color changing apparatus 1000a shows a case where linear polarization means is applied. That is, the first polarization means 10 and the second polarization means 30 are both linear polarization means. The first and second polarization means 10 and 30 may be, for example, a polarizing film, a polarizing filter, a polarizing plate, or the like.

In addition, the birefringence medium 20 is to birefringent light, and having a birefringence, an elongated plastic film such as OPP film, PET film, cellophane film, plastic plate, etc. may be used, and the birefringence film specially prepared for birefringence This can be used.

As a birefringent medium, a birefringent plate, a birefringent lens, or the like may be used.

Meanwhile, the birefringent medium 20 according to the present invention has a birefringent medium such as a birefringent film on a transparent medium 20G, such as a glass plate or an acrylic plate, which has little or no birefringence, as shown in FIG. 20F) is attached. In this case, as shown in FIG. 16C, the birefringent medium 20F may be attached to a part of the transparent medium 20G without being attached to the entire surface of the transparent medium 20G.

Or, as shown in Figure 16 (b), the birefringent medium 20 according to the present invention, such as birefringent film between the transparent medium (20G1) (20G2), such as a glass plate or an acrylic plate with little or no birefringence It includes a birefringent medium 20F is inserted. In this case, as shown in FIG. 16D, the birefringent medium 20F does not necessarily need to be inserted with respect to the entire surface of the transparent medium 20G1 or 20G2, and occupies a part. It may be inserted to

A cavity 44 is formed on the front surface of the case 4 so that the first polarization means 10 is exposed to the outside through the cavity 44.

Although not shown, a window made of a material such as glass may be installed in the cavity 44 of the front surface of the case 4.

According to the present invention, the first polarizing means 10, the birefringent medium 20 and the second polarizing means 30 is any one or any two or both of which is rotatably installed in the case (4), If some are rotatably installed, others are fixedly installed. At this time, the rotatable one may be fixed because it does not receive power transmission.

In the color changing apparatus 1000a, the birefringent medium 20 installed behind the first polarization means 10 that is exposed through the cavity 44 on the front of the case 4 and is seen from the outside is rotatably installed. In other words, the first polarizing means 10 and the second polarizing means 30 are fixedly installed.

According to the present invention, the first polarization means 10 by driving all or part of the first polarization means 10, the birefringence medium 20 and the second polarization means 30 is rotatably installed. ) And a drive mechanism 50 for driving the birefringence medium 20 and the second polarization means 30 to rotate relative to each other.

In the case of the color changing apparatus 1000a, a birefringent medium 20 is rotatably installed and a driving mechanism 50 for driving the color refraction medium 20 is provided. The driving mechanism 50 includes a motor 55 and the motor 55. ) And a belt 54 connecting the birefringence medium 20.

Accordingly, the birefringent medium 20 is rotated by the power of the motor 55 and the first polarizing means 10 and the second polarizing means 30 are stopped, and the first polarizing means 10 is stopped. ) And the birefringence medium 20 and the second polarization means 30 are relatively rotated with each other.

According to the present invention, the light starting from the rear of the second polarization means 30 toward the outside is polarized through the second polarization means 30, while again passing through the birefringence medium 20 Each polarization direction is different for each wavelength, and light having a different polarization direction for each wavelength enters the first polarization means 10. The first polarization direction is performed for light having a different polarization direction for each wavelength entering the first polarization means. The wavelength perpendicular to the polarization direction of the polarization means 10 does not pass through the first polarization means 10, and in the case of other wavelengths, all or part of the wavelength is passed according to the polarization direction. The polarized means 30 appears in a mixture of colors according to the wavelength passed through the color is exposed to the outside through the cavity 44.

In addition, even when the light flows inward from the outside and then exits again, the light flows in through the above process and then goes back in through the same process as above when the light enters the inside through the reflection or reflection and scattering process. The first polarization means 30 is a mixture of colors according to the wavelength passed through the same color is visible through the cavity 44 is the same.

In this situation, according to the present invention, the first polarization means 10, the birefringence medium 20, and the second polarization means 30 are rotated relatively by the driving mechanism 50. And the polarization direction of the first polarization means 10, the direction of the birefringence medium 20, or the second polarization means in relation to the first polarization means 10, the birefringence medium 20, and the second polarization means 30. The change in polarization direction of the light source 30 causes a change in the color of light visible through the first polarization means 10, and the change in color is exposed through the cavity 44 of the front surface of the case 4. It is visible through the first polarization means (10).

According to the present invention, the first polarization means 10, the birefringence medium 20, and the second polarization means 30 are relatively rotated by each other by the driving mechanism 50, including the following seven cases.

First, the polarization direction of the first polarization means 10 and the birefringence medium 20 makes relative rotation with each other, and the second polarization means 30 is stopped. This case includes the case where one of the first polarizing means 10 or the birefringence medium 20 is stopped and the other rotates, and both are rotated but their rotation speeds are different.

Second, the first polarization means 10 is stopped and the birefringence medium 20 and the second polarization means 30 are relatively rotated with each other. This case also includes a case where one of the birefringent medium 20 and the second polarization means 30 is stopped and the other rotates, and a case in which both rotate, but the rotation speed is different.

Third, the birefringence medium 20 stops and the first polarization means 10 and the second polarization means 30 rotate relative to each other. This case also includes a case in which one of the first polarizing means 10 and the second polarizing means 30 is stopped and the other rotates, and a case in which both rotate and the rotation speeds are different.

Fourth, the first polarizing means 10, the birefringent medium 20 and the second polarizing means 30 are all rotated and the rotation speed between them has a difference.

Fifth, the first polarization means 10 and the birefringence medium 20 is rotated together and the second polarization means 30 is stopped.

When the first polarization means 10 and the birefringent medium 20 is rotated together, they include a case where they are combined to rotate as a single body and they rotate at a constant speed. When the first polarization means 10 and the birefringence medium 20 are integrally rotated, the birefringence film 20 is attached to the rear surface of the polarizing film 10.

Sixth, the first polarization means 10 is stopped and the birefringence medium 20 and the second polarization means 30 are rotated together.

When the birefringence medium 20 and the second polarization means 30 are rotated together, they include a case where they are combined to rotate as one body and when they rotate at a constant speed. When the birefringence medium 20 and the second polarization means 30 are combined and rotated integrally, for example, the polarization film 30 is attached to the rear surface of the birefringence film 20.

Seventh, the birefringence medium 20 is stationary and the first polarization means 10 and the second polarization means 30 rotate together. When the first polarization means 10 and the second polarization means 30 are rotated together, they include a case where they are connected and rotate as one body, and when they rotate at a constant speed. For example, the first polarization means 10 and the second polarization means 30 may be connected to each other and rotate as one body, or may be rotated at constant speed by receiving power from a motor.

In these seven cases, the stopping of the first polarizing means 10 or the birefringent medium 20 or the second polarizing means 30 is the case where they are fixedly installed in the case 4 and stopped. It includes a case that is rotatably installed in the case 4 and connected to the drive mechanism 50 but stopped because power is not transmitted from the drive mechanism 50.

The driving mechanism 50 is related to rotating the first polarization means 10, the birefringence medium 20 and the second polarization means 30 relative to each other, and FIG. 2 shows the first polarization means 10 and Both the birefringent medium 20 and the second polarization means 30 are rotatably installed in the case 4, and both of them are driven by the driving mechanism 50 to rotate relative to each other.

In this case, the first polarization means 10, the birefringence medium 20 and the second polarization means 30, which are rotatably installed in the case 4, and are sequentially arranged, are composed of gears on the outer circumference thereof. The connecting gears 11, 21, 31 are engaged with each other, and the power transmission gears 51, 52, 53 are respectively engaged with the shaft 58, and the shaft 58 is a motor 55. ) Is connected to the belt 54 and receives power.

The gear ratio of the first polarizing means 10, the connecting gear 11 and the power transmission gear 51, the gear ratio of the birefringence medium 20, the connecting gear 21 and the power transmission gear 52 The gear ratios of the second polarizing means 30, the connecting gear 31, and the power transmission gear 53 are all different. Accordingly, the first polarizing means 10, the birefringence medium 20, and the second polarizing means are different. All 30 make relative rotations at different speeds.

As an example other than the example of FIG. 2, a method of controlling the rotational speed of each motor while driving each of the first polarizing means 10, the birefringent medium 20, and the second polarizing means 30 by a separate motor may be used. have.

According to various methods known in the field of power transmission in addition to the above examples, the first polarizing means 10 and the birefringent medium 20 and the second polarized light are exhibited by the ordinary creative ability of those skilled in the art. It is possible to rotate the means 30 relative to one another.

On the other hand, according to the present invention, it is very preferable that a light source (not shown) is installed behind the second polarization means 30.

In this case, it is preferable that the light source forms a surface light source to emit uniform light over the entire area. For example, the light source may be provided with an LED or a cold cathode fluorescent lamp (CCFL), and a light guide plate may be installed in front of the light source.

When the light source is installed in the rear of the second polarization means 30 as described above, the change in color is seen through the first polarization means 10 exposed to the outside by the light of the light source, so that the change in color can be clearly recognized. It is preferable to change the color even in dark places or at night.

As such, when the second polarization means 30 installs a light source at the rear, the light from the light source is polarized through the second polarization means 30, and the polarized light passes through the birefringence medium 20. While the polarization direction is different for each wavelength, the light having a different polarization direction for each wavelength enters the first polarization means 10. Among the light having different polarization directions for each wavelength entering the first polarization means, The wavelength perpendicular to the polarization direction of the first polarization means 10 does not pass through the first polarization means 30, and in the case of other wavelengths, all or part of the wavelength is passed according to the polarization direction, The light passing through the first polarization means 30 is a mixture of colors according to the wavelength of the light passing through the first polarization means 10 exposed to the outside through the cavity 44. Look outward .

In this situation, the first polarization means 10, the birefringence medium 20, and the second polarization means 30 are rotated relative to each other by the driving mechanism 50. The polarization direction of the first polarization means 10, the direction of the birefringence medium 20, or the second polarization means 30 in the relationship between the polarization means 10, the birefringence medium 20, and the second polarization means 30. A change in the polarization direction occurs to cause a change in color due to the light passing through the first polarization means, and the change in color is exposed through the cavity 44 on the front of the case 4. Is seen through).

In addition, a reflecting member (not shown) such as a mirror or an aluminum plate may be installed at the rear of the second polarizing means 30. In this case, the change of color is seen through the first polarization means 10 exposed to the outside by the reflected light.

That is, when a reflecting member such as a mirror or an aluminum plate is installed at the rear of the second polarizing means 30, the color of light that is introduced from the outside, reflected from the reflecting member, and passes through the first polarizing plate again is as described above. When the first polarization means 10, the birefringence medium 20 and the second polarization means 30 are relatively rotated by the driving mechanism 50, these first polarization means 10, the first polarization means 20, The polarization direction of the first polarization means 10, the direction of the birefringence medium 20, or the second polarization means 30 in the relationship between the polarization means 10, the birefringence medium 20, and the second polarization means 30. The polarization direction is changed to cause a change in color due to the light passing through the first polarization means, so that the first polarization means 10 is exposed through the cavity 44 on the front of the case 4. It will be seen through.

As described above, the polarization means applied in the present invention includes both linear polarization means and circular polarization means, and FIG. 1B shows a color changing apparatus 1000b to which the circular polarization means is applied. Except for the case where circular polarization means is applied to 10 and the second polarization means 30, the rest of the configuration is the same as the color changing apparatus 1000a described with reference to FIG. 1A.

That is, in the color changing apparatus 1000b, both the first polarization means 10 and the second polarization means 30 are circular polarization means, and the first polarization means 10 is a phase difference plate on the rear surface of the linear polarization means 10L. 10P is coupled to form a circular polarization means, and the second polarization means 30 is a phase polarizer 30P coupled to the front surface of the linear polarization means 30L to form circular polarization means. It is the same as the color changing apparatus 1000a described for reference.

In this case, according to the same operation principle as that of the color changing apparatus 1000a, the color changing apparatus 1000b also operates to expose the first polarization means exposed to the outside of the case 4 according to the driving of the driving mechanism 50. Through 10, the change of color is displayed.

3 shows another example 2000 of the color changing apparatus according to the present invention.

The color changing apparatus 2000 has a polarization means 10 is installed in the case 4, the birefringence medium 20 is disposed behind the reflection device such as a mirror or an aluminum plate at the rear of the birefringence medium 20 The member 80 is provided.

According to the present invention, either or both of the polarizing means 10 and the birefringence medium 20 are rotatably installed in the case 4, and the other is fixedly installed if one is rotatably installed. In this embodiment, the polarizing means 10 is fixedly installed and the birefringent medium 20 is rotatably installed.

In addition, a driving mechanism 50 is provided, and the driving mechanism 50 drives all or part of the polarization means 10 and the birefringence medium 20 so as to be rotatable, thereby driving the polarization means 10 and the birefringence medium. Let 20 be rotated relative to each other.

As such, when the polarization means 10 and the birefringence medium 20 are relatively rotated with each other, any one of them rotates and the other stops or all of them rotate, but their rotation speeds are different. do.

Meanwhile, the polarization means 10 and the birefringence medium 20 are stopped when they are fixedly installed and stopped in the case 4 and are rotatably installed but are not driven by the driving mechanism 50. do.

According to the color changing apparatus 2000 according to the present embodiment, the polarization means 10 is fixedly installed and the birefringence medium 20 is rotatably installed, and the birefringence medium 20 is the motor 55 and the belt. Rotation is achieved by the drive mechanism 50 comprising 54.

In addition, a cavity 44 is formed on the front surface of the case 4 through which the first polarization means 10 is exposed to the outside.

The light polarized through the polarization means 10 passes through the birefringence medium 20 and the polarization directions are different for each wavelength. Thus, the light having the different polarization directions for each wavelength is reflected by the reflecting member 80 and then again. The polarization direction is changed again for each wavelength while passing through the birefringent medium 20, and then the polarization direction is not passed through the polarization means 10 while passing through the birefringence medium 20 again. In the case of those of the wavelength of all or part of the pass according to the polarization direction, the polarized means 10 will appear a mixture of colors according to the wavelength passed.

In this situation, the polarization means 10 or the birefringence medium 20 are rotated relative to each other, so that the polarization direction of the polarization means 10 or the birefringence direction of the birefringence medium 20 are relatively different from each other. The light that is generated and reflected by the light is caused to change color, and the change of color is visible through the polarization means 10 exposed to the outside of the case 40.

On the other hand, the polarizing means 10 is preferably a linear polarizing means, but as described above does not exclude the circular polarizing means combined with the phase difference plate on the back of the linear polarizing means. If the polarization means 10 is formed of a circular polarization means, the remaining portions except for the birefringence medium 20 can be obtained dark effect, which will be described later with reference to FIG.

The polarization means 10 and 30 applied to the inventions disclosed throughout the present specification may be formed of a plurality of zones having different polarization directions, respectively, adjacent to each other, and the birefringence medium 20 also adjacent to each other may be birefringent. It may consist of multiple zones with different characteristics.

In the color changing apparatuses 1000a and 1000b of FIGS. 1A and 1B, when the first polarization means 10 is adjacent to each other, the first polarization means 10 includes a plurality of zones having different polarization directions. Different colors may appear for each zone, and color changes occur for each zone of the first polarization means 10 according to the driving of the driving mechanism 50.

In this case, one zone or a plurality of zones may collectively form a specific shape (such as an animal, an insect, or a character), or a change in color may appear in the shape or shape.

If the birefringence medium 20 is adjacent to each other when a plurality of zones having different birefringence characteristics are formed, it may be seen that different colors appear in each zone of the birefringence medium 20 through the first polarizing means 10, As the birefringence medium 20 rotates according to the driving of the driving mechanism 50, and thus, each of the zones also rotates, it is seen that color change occurs for each zone. In this case, one zone or a plurality of zones may collectively form a specific shape (such as an animal, an insect, or a character), or a change in color may appear in the shape or shape.

This is the same as the case where the second polarization means 30 is adjacent to each other when made up of a plurality of zones having different polarization directions.

The first polarizing means 10 and the birefringence medium 20 are all adjacent to each other to form a plurality of zones having different polarization directions or different birefringence characteristics, or the birefringence medium 20 and the second polarization means 30. All of which are adjacent to each other form a plurality of zones having different birefringence characteristics or different polarization directions, or those of which the first and second polarizing means 10 and the second polarizing means 30 are all adjacent to each other are different from each other. Or the first polarizing means 10, the birefringent medium 20, and the second polarizing means 30 are adjacent to each other to form a plurality of zones having different polarization directions or different birefringence characteristics. In these cases, these zones overlap each other as they rotate, forming a shape or shape according to the overlapping situation, and the shape or shape is accompanied by a change in color according to the driving of the driving mechanism 50. It constitutes a change.

In the color changing apparatus 2000 of FIG. 3, the polarizing means 10 may be formed of a plurality of zones having mutually different polarization directions, and the plurality of birefringent media 20 also adjacent to each other may have different birefringence characteristics. It may consist of two zones. In addition, both of the polarizing means 10 and the birefringence medium 20 can form a zone.

The birefringence characteristic refers to a characteristic in which birefringence is made differently such as the angle of refraction (speed of light in the medium) of each refracted light incident upon the birefringence medium and the distance in which the light is birefringed in the birefringence medium. By using different media itself (for example, when materials are different such as cellophane and OPP), the birefringence characteristics may be different, or even the same birefringence media may have different thicknesses, or the number of overlaps of birefringence media such as birefringence films may be overlapped. The birefringence characteristics can be varied by varying the number of layers, such as 1, 2 or 3, or by arranging them in different directions (for example, horizontally or diagonally).

FIG. 4 illustrates that the first polarizing means 10 is adjacent to each other with respect to the color changing apparatus 1000a of FIG. 1A, and is formed as a billboard 1000 ′ composed of a plurality of zones 101 to 107 having different polarization directions. Seems to be the case.

In this case, all of the zones 101 to 106 are spaced apart and all of them are adjacent to the underlying zone 107, and all of the zones of 101 to 106 have different polarization directions from the zone 107. As a result, the mutually adjacent ones have different polarization directions. However, these 101 to 106 zones may be the same or different polarization direction.

On the other hand, in the present embodiment, the letters (dream projector) are displayed in the areas 101 to 106 of the polarizing means 10, respectively.

In this case, different polarization directions appear in different colors, and when the birefringence medium 20 rotates according to the driving of the driving mechanism 50, the change in color is seen for each zone in which the polarization directions are different. If the polarization directions from these zones 101 to 107 are all different, then these zones 101 to 107 can all exhibit different colors and produce different color variations. (In some cases, the same color may appear in areas 101 to 107 with different polarization directions, but the same color variations can be produced in these areas.)

In this case, the color of the letters is changed for a plurality of areas of the first polarization means 10 exposed to the outside can be used as a billboard.

Meanwhile, a light source such as a surface light source or a reflective member such as a mirror or an aluminum plate may be disposed behind the second polarization means 30.

5 shows that the first and second polarization means 10 and 30 and the birefringence medium 20 are adjacent to each other with respect to the color changing apparatus 1000 of FIG. 1A to have different polarization directions or birefringence characteristics. A color changing device 1000 " consisting of a number of other zones is shown.

The first polarization means 10 consists of five zones 101, 102, 104, 106 and 108, and the birefringence medium is divided into four zones 201, 202, 203 and 204. The second polarization means 30 consists of two zones 301 and 302.

In this case, when the driving mechanism 50 is not driven, these areas overlap and form a shape according to the overlapping situation. When the driving mechanism 50 is driven, the first polarization means 10 and the birefringence medium ( 20) and the second polarization means 30 are made to rotate relative to each other, to produce a change in shape or form with a change in color depending on the area of these areas or when these areas overlap each other.

FIG. 6 shows that the first and second polarizing means 10 and 30 and the birefringence medium 20 are adjacent to each other in the color changing apparatus 1000a of FIG. In this case, each section forms a shape or picture.

Referring to FIG. 6A, the first polarization means 10 is composed of two zones 10a and 10b, in which the zone 10b is shaped like a mountain and thus the zone 10a becomes a background. have. The birefringence medium 20 is composed of a circular zone 20a that represents the moon and a zone 20b that forms the base. In addition, the second polarization means 30 is composed of two zones (30a) (30b), the zone (30b) is in the shape of a stream.

These zones overlap, and as shown in FIG. 6 (b), the mountain 10b is visible, and the moon 20a is floating on the left side of the mountain 10b and the interior 30b flows in the lower right. These zones 10b, 20a, 30b will have different colors.

In this situation, if the driving mechanism 50 adjusts the rotation angle of the motor 55 to perform reverse rotation to adjust the rotation direction and range of the birefringence medium 20, the moon 20a is raised and floated and different colors for each zone. This change can be produced.

Meanwhile, a light source such as a surface light source, or a reflective member such as a mirror or an aluminum plate may be installed behind the second polarization means 30.

As such, the present invention may be utilized as a signboard, for example, as described with reference to FIG. 4, and may also be used for decoration or interior, as described with reference to FIGS. 5 and 6.

In the drawings of the present specification, the rotating members (for example, the birefringent medium 20, which is a birefringent plate in FIG. 6) have a circular shape, which is only an exemplary case, and it is apparent that the rotating members may have various shapes. something to do.

On the other hand, in the inventions disclosed throughout the present specification, the birefringence medium 20 is made of a plastic plate and the like, the stress distribution is changed according to the molding process, such that the uniform birefringence characteristics throughout the birefringence medium 20 According to the non-uniform birefringence characteristic, the color seen through the first polarization means 10 is different depending on the non-uniformity of the birefringence characteristic of the birefringence medium, and this difference may form a shape. In this case, the driving mechanism According to the driving of 50, various color changes and shape changes can be produced. Such non-uniform birefringent properties may span the entire birefringent medium and in some other cases.

The present invention also provides an indicator in which a change in color is exposed to the outside according to the movement of the indicating means. An indicator refers to indicating a value by indicating through a indicating means, for example, an instrument panel or a clock.

According to the present invention as described above, since the color change occurs in accordance with the movement of the indicating means in the indicator, it is possible to increase the recognition and attention to the change of the indication value with a new aesthetic.

7A, 7B, and 8 show clocks 3000a, 3000b, and 3000 ', respectively, as examples of indicators indicating output values. In this case, the indicating means for indicating the time is indicated by the hands of the clock. do.

First, referring to FIG. 7A, the watch 3000a has a case 4, and a birefringence medium 20 is installed in the case 4 in the form of a plate, and the birefringence medium 20 is a watch needle of the watch. It becomes a returning background board, and numbers, letters or symbols representing time are displayed on the front side to form a display unit. However, this marking is not necessary.

The birefringent medium 20 is exposed to the outside through the cavity 44 of the case 4.

The birefringent medium 20 serving as the display portion is provided with clock hands 5, 5 'as an indicating means, and the first polarizing means 10a1 and 10a2 are provided on each of the clock hands 5, 5'. Each is installed. For example, the hands 5, 5 'have cavities S1 and S2, and the first polarizing means 10a1 and 10a2 in the form of a polarizing film are formed on the respective cavities S1 and S2. (On the other hand, according to the present invention, the hands of the hands 5, 5 'are formed by molding a birefringent plate or a birefringent material, or attaching a birefringent medium to all or a part of the transparent member. Of course, it can be produced by inserting.)

In addition, a second polarization means 30 is disposed behind the birefringent medium 20, which is the display unit.

According to the present invention, there is provided a drive mechanism 50 for driving the indicating means, in this embodiment the drive mechanism 50 is a watch needle drive of a conventional watch for driving the hands 5 and 5 '. Device 59.

Accordingly, when the hands 5, 5 'are moved by the hands 5, the polarization means 10a1 and 10a2 installed in the hands 5, 5' are changed. That is, a change in color is produced as the indicating means 5, 5 'move.

Meanwhile, in the case of the watch 3000a, a light source may be installed at the rear of the second polarization means 30, or a reflection member may be installed.

In the case of the clock 3000a, the first polarizing means 10a1, 10a2, the birefringent medium 20, and the second polarizing means 30 are each or any two or all of which are adjacent to each other in the polarization direction. It may be formed of multiple zones with different or different birefringence properties.

FIG. 7B shows the watch 3000b having a reflection member such as a mirror or an aluminum plate installed behind the birefringence medium 20 as compared to the watch 3000a of FIG. 7A.

Also in this case, a change in color is produced through the first polarization means 10a1 and 10a2 as the hands of the clock hands 5 and 5 'move. This is based on the same principle as that described for the color changing apparatus 2000 with reference to FIG.

The watch 3000 ′ of FIG. 8 has a case 4, and the case 4 is provided with a plate-shaped polarizing means 30, and the polarizing means 30 is a background plate on which the clock hands of the watch rotate. In addition, time and the like may be displayed on the front surface of the display unit, and the polarizing plate 30 may be exposed to the outside through the cavity 44 of the case 4.

The polarizing means 30 is provided with clock hands 5, 5 'as indicating means, and each of the clock hands 5, 5' has polarizing means 10a1 and 10a2 exposed to the outside. It has a birefringent medium (20a1) (20a2) attached to the rear surface of the polarizing means (10a1) (10a2). The polarization means 10a1 and 10a2 of the hands 5 and 5 'form a first polarization means and the plate-shaped polarization means 30 constitutes a second polarization means.

For example, the hands 5, 5 'have cavities S1 and S2, and the birefringent medium 20a1 and 20a2 in the form of a birefringent film are attached to each of the cavities S1 and S2. First polarizing means 10a1 and 10a2 in the form of a polarizing film are attached to the front surface thereof.

The watch needle driving device 59 of a conventional watch that drives the hands 5 and 5 'drives the hands 5 and 5' which are the indicating means as the drive mechanism 50. As shown in FIG.

Accordingly, when the hands 5, 5 'are moved by the hands 59, the color of the first polarization means 10a1 and 10a2 installed in the hands 5, 5' changes. appear. In other words, the color change is produced while indicating the time as the indicating means 5, 5 'is rotated.

Also, in the case of the watch 3000 ', the first polarizing means 10a1 and 10a2, the birefringent medium 20a1 and 20a2, and the second polarizing means 30 are each or any two or all of them. Adjacent ones may be formed of a plurality of zones having different polarization directions or different birefringence characteristics, and a light source may be installed at the rear of the second polarization means 30, or the second polarization means 30 may be The rear side may be provided with a reflective member.

9A, 9B, and 10A and 10B show examples of indicators 4000a, 4000b, 4000'a, and 4000'b indicating input values, respectively.

There may be various examples in which an indicator indicating the input value is applied. For example, in an audio system, the volume of the speaker may be adjusted (when the volume of the speaker is indicated by turning the dial) or in a vehicle. There may be a case of adjusting the degree of cooling of the air conditioner (adjusting the degree of cooling by adjusting the lever moving in the horizontal direction in the left and right direction).

In this case, according to the present invention, the color is changed while the volume size is indicated as the dial is rotated, and the color is changed while the degree of cooling is indicated as the lever is moved in the transverse direction.

Referring to FIG. 9A, the indicator 4000a has a case 4, and the front surface of the case 4 forms a display unit 60 by displaying numerals or letters or symbols indicating values to be indicated by the indicating means. In the display unit 60, a cavity 44 is formed around the dial 558. As shown in FIG. On the other hand, the display of numbers, letters or symbols indicating values to be indicated by the indicating means on the front of the case 4 is not necessary.

A first polarization means 10 is disposed in the case 4, a birefringence medium 20 is disposed behind the first polarization means 10, and a second polarization means behind the birefringence medium 30. 30 is disposed.

According to the present invention, the first polarizing means 10, the birefringent medium 20 and the second polarizing means 30, any one or any two or all of them are rotatably installed in the case (4) , If some are rotatably installed, others are fixedly installed.

According to the present embodiment, the birefringent medium 20 is rotatably installed, and the first polarizing means 10 and the second polarizing means 30 are fixedly installed.

According to the invention, the indicator 4000a has an indicating means 85 for indicating a value.

According to the present invention, the indicator 4000a is also interlocked with the indicating means 85 and rotates among the first polarizing means 10, the birefringent medium 20, and the second polarizing means 30. The first polarizing means 10, the birefringent medium 20, and the second polarizing means 30 are linked to each other in connection with the movement of the indicating means 85 so as to be connected to all or a part of them that are possibly installed. It has a drive mechanism 50 to achieve the rotation.

In the present embodiment, a dial 558 is provided in which a groove 85 is formed to make an indication, and the dial 558 is connected to the birefringent medium 20 rotatably installed through the connecting shaft 5551. The dial 558 is connected with an input sensing device 90 that accepts an input value. For example, the input sensing device 90 may be formed of a variable resistance circuit for adjusting the volume of the speaker.

In this case, the groove 85 of the dial 558 forms the indicating means, and the dial 558 and the connecting shaft 5551 form the driving mechanism 50.

Accordingly, when the dial 558 is rotated, the indicating means 85 moves in conjunction with the rotation of the dial 558, and the birefringent medium 20 is fixedly installed and stopped by interlocking with the movement of the indicating means 85. 10) and the second polarization means 30 is rotated so that the first polarization means 10, the birefringence medium 20 and the second polarization means 30 are relatively rotated with each other.

As a result, a change in color according to the movement of the indicating means 85 is shown through the first polarizing means 10 exposed through the cavity 44 of the front surface of the case 4.

FIG. 9B shows that a reflecting member such as a mirror or an aluminum plate is installed 4000b at the rear of the birefringent medium 20 as compared with the indicator 4000a of FIG. 9A.

Also in this case, the change of the color is produced through the first polarizing means 10 exposed to the cavity 44 of the front surface of the case 4 by the indicating means 85 moving in accordance with the movement of the dial 558. . This is based on the same principle as that described for the color changing apparatus 2000 with reference to FIG.

In the above-described indicator 4000a, the first polarizing means 10, the birefringence medium 20, and the second polarizing means 30 are relatively rotated with each other, including seven cases. Same as the case described in device 1000a.

10A and 10B show other examples 4000'a and 4000'b of indicators indicating input values.

First, referring to FIG. 10A, the indicator 4000'a has a case 4, and a front surface of the case 4 is displayed with a number, a letter or a symbol indicating a value to be indicated by the indicating means. 60 is formed, and the display portion 60 is formed with a cavity 44 surrounding a part of the circumference of the dial 558. On the other hand, the display of numbers, letters or symbols indicating values to be indicated by the indicating means on the front of the case 4 is not necessary.

In the case 4, the indicating means 85 is rotatably installed, and the indicating means 85 has polarization means. For example, the indicating means 85 has a cavity (not shown) so that the polarizing means may be installed in the cavity.

In the present embodiment, the indicating means 85 consists of polarizing means 10. For example, the polarizing plate 10 is processed to form the indicating means 85.

According to the present invention, as described above, the polarizing means 10 of the indicating means 85 forms the first polarizing means.

The birefringence medium 20 and the second polarization means 30 are sequentially fixed to the rear of the first polarization means 10.

In this embodiment, a dial 558 is provided, which dial 558 is connected via a connecting shaft 5551 with an indicating means 85 having a first polarization means 10 and also with an input sensing device 90. Connected with

Accordingly, when the dial 558 is rotated, the indicating means 85 having the first polarizing means 10 moves in conjunction with the rotation of the dial 558 to make an indication, thereby changing the color of the cavity 44 of the front surface of the case 4. It appears through the first polarizing means 10 which is the indicating means exposed through.

FIG. 10B shows that the reflection member such as a mirror or an aluminum plate is installed at the rear of the birefringence medium 20 as compared with the indicator 4000'a of FIG. 10A.

Also in this case, the change of the color is produced through the first polarizing means 10 exposed to the cavity 44 of the front surface of the case 4 by the indicating means 85 moving in accordance with the movement of the dial 558. . This is based on the same principle as that described for the color changing apparatus 2000 with reference to FIG.

9A to 10B, a light source may be installed at the rear of the second polarization means 30 in the indicators 4000a, 4000b, 4000'a, and 4000'b of FIG. 10b, or a reflective member may be installed. have.

Meanwhile, in the indicators 4000a and 4000'a of FIGS. 9A and 10A, the first polarizing means 10, the birefringence medium 20, and the second polarizing means 30, respectively, or two or all of them are adjacent to each other. It may be composed of a plurality of zones having different polarization directions or adjacent ones with different birefringence characteristics. In addition, the birefringence medium 20 in these may not be uniform throughout or part of the birefringence characteristics.

In addition, in the indicators 4000b and 4000'b of FIGS. 9B and 10B, the polarization means 10 may be adjacent to each other, and may include a plurality of zones having different polarization directions, or the birefringence medium 20 may be mutually adjacent. Adjacent to may consist of a plurality of zones having different birefringence properties. In addition, the birefringence medium 20 in these may not be uniform throughout or part of the birefringence characteristics.

According to the present invention, while the color change is made, the remaining portion except for this portion may provide a dark color changing device or indicator. In this case, the change in color is more prominent, which raises the attention and creates a new aesthetic.

11 illustrates a case where the watch 5000 is applied as an indicator.

The watch 5000 has a case 4, and the case 4 is provided with a plate-shaped polarizing means 30, the polarizing means 30 is a background plate on which the clock hands of the clock rotates, Time and the like may be displayed on the front surface of the display unit.

The cavity 44 of the case 4 is provided with polarizing means 10 in the form of a polarizing plate to form a window. The polarizing means 10 constituting the window constitutes a first polarizing means, and the polarizing means 30 serving as a background plate on which the clock hand rotates forms a second polarizing means.

Meanwhile, time may be displayed on the first polarizing means 10 forming a window in place of the second polarizing means 30 which is the background plate.

Between the first polarizing means 10 and the second polarizing means 30, clock hands 5, 5 'are provided as indicating means, and each of these hands 5, 5' is a birefringent medium. 20a1 and 20a2. For example, the hands 5, 5 'have cavities S1 and S2, and the birefringent medium 20a1 and 20a2 in the form of a birefringent film are attached to each of the cavities S1 and S2. do.

The watch needle driving device 59 of a conventional watch that drives the hands 5 and 5 'drives the hands 5 and 5' which are the indicating means as the drive mechanism 50. As shown in FIG.

Accordingly, when the hands 5, 5 'are moved by the hands 59, the birefringent medium 20a1, 20a2 of the hands 5, 5' is rotated and the window is opened. The color of the birefringent medium 20a1 or 20a2 is changed in the first polarizing means 10. In other words, the color change is produced while indicating the time as the indicating means 5, 5 'is rotated.

In this case, as shown in FIG. 12, as the clock hands 5 and 5 'overlap or do not overlap, the portion where the color change is made changes.

For example, as shown in FIG. 12A, the birefringence medium region 20a3 overlaps the small hands 5 as the small hands 5 overlap the large hands 5 ′ at 12 o'clock. In the case of the overlapped birefringent medium region 20a3, the birefringence characteristic is changed due to the overlapping, and the color thereof will be seen. On the other hand, in the portion where the small clock hands 5 do not overlap in the large clock hands 5 ', the color according to the characteristics of the original birefringent medium 20a1 is seen.

As shown in FIG. 12B, when the time indicates 1 o'clock, birefringent regions 20a3 overlapped in some regions are formed, and as shown in FIG. 12, birefringences different in the three regions 20a1, 20a2, and 20a3 are shown. You will see the color according to the characteristics.

When the time indicates 3 o'clock as shown in FIG. 12C, the hands 5 and 5 ′ do not overlap, and accordingly, the birefringent medium 20 a 1 of each of the hands 5 and 5 ′ is inherently overlapped. The color according to the birefringence property of 20a2 will be seen in each.

As the birefringence medium 20 is sequentially arranged in a plurality of indicators and rotated relatively by the driving mechanism 50 as described above, the area where the change of color occurs as they overlap or not overlap is changed. It will be able to produce a more colorful change of color. If each of these multiple birefringent media consists of multiple zones with different birefringence properties, more diverse effects can be achieved.

Meanwhile, according to the present invention, as described above, both the first polarizing means 10 and the second polarizing means 30 may be linearly polarizing means or both circularly polarizing means.

If both of the first polarizing means 10 and the second polarizing means 30 are linear polarizing means, their polarization directions have a difference between 80 ° and 100 ° to each other, preferably, a difference of 90 °. It is good to have.

On the other hand, if the first polarizing means and the second polarizing means are circularly polarized means, one of the two is the left circularly polarized means and the other is the right circularly polarized means, the phase difference of each phase difference plate included in these two circularly polarized means is It has a value between the quarter wave minus 10% of the quarter wave and the quarter wave plus the quarter wave 10%, preferably 4 minutes. It is recommended to have a value of 1 wavelength of. (Accordingly, the sum of the phase differences due to the two phase difference plates included in these two circularly polarizing means is equal to the value obtained by subtracting 10% of the half wavelength and adding 10% of the half wave to the half wave. , Preferably has a half wavelength value.)

In this case, the amount of light passing through is small or absent except for two hands 5 and 5 'having two birefringent media 20a1 and 20a2. That is, for the clock hands 5 and 5 'where the change of color is made, other parts except for this part become dark or black.

Therefore, the hands of the birefringence characteristics change as the hands of the hands (5) and (5 ') change, but various color changes are shown according to the characteristics, but the hands do not change color. Except for (5) and (5 '), the other parts are dark or black, increasing attention to color changes and creating new aesthetics.

On the other hand, in this case, a reflecting member such as a light source, a mirror, or an aluminum plate may be provided at the rear of the second polarizing means 30. In particular, when the light source is provided, the peripheral part is dark or black in the center of the clock hand (5). Only the portion of the birefringent medium 20a1 and 20a2 of 5 'has a color and the light is left to form a unique aesthetic.

FIG. 13 shows an example 6000 of a color changing device that produces a change in color in the dark of the periphery.

According to the color changing device 600, the first polarization means 10 is installed in the cavity 44 of the case 4 as a kind of window, and the relative rotation between each other by the drive mechanism 50 at the rear thereof. The birefringent medium 20a, 20b constituting the sequential birefringence medium 20a, 20b is sequentially arranged, and the second polarization means 30 is installed at the rear thereof.

In this embodiment, the birefringent medium 20a, 20b sequentially disposed is connected to the motors 55, 55 'and the belts 54, 54', respectively, to achieve relative rotation. These motors 55, 55 ′ and belts 54, 54 ′ form a drive mechanism 50.

The birefringence medium 20a is composed of two zones 20a1 and 20a2 having different birefringence characteristics, and the birefringence medium 20b is composed of two zones 20b1 and 20b2 having different birefringence characteristics.

Accordingly, when the birefringent medium 20b rotates according to the driving of the driving mechanism 50, the areas 20a1, 20a2, 20b1 and 20b2 of the birefringent medium 20a and 20b overlap each other. Depending on the birefringence, different areas are formed, and the shape of overlapping areas changes as the rotation rotates, and various colors are made and changed according to the overlapping areas.

On the other hand, in such a case, if both of the first polarizing means 10 and the second polarizing means 30 are linear polarizing means, their polarization directions have a difference between 80 ° and 100 ° to each other, preferably Or 90 °, or, if the first polarization means and the second polarization means are circular polarization means, one of them is left circular polarization means and the other is right circular polarization means. The phase difference of each retardation plate included in is equal to the value of the quarter wave minus 10% of the quarter wave and the quarter wave plus 10% of the quarter wave. When having a value between and preferably having a value of a quarter wavelength, the remaining portions except for the birefringent medium (20a, 20b) is dark or black.

Therefore, as the birefringence medium 20a and 20b are relatively rotated, the areas of the birefringence characteristics change with overlapping or non-overlapping, and various color changes are shown depending on the characteristics, but the remaining portions are dark or black. As a result, attention to the change of color is increased and a new aesthetic is created.

On the other hand, in such a case, a reflecting member such as a light source, a mirror, or an aluminum plate may be provided at the rear of the second polarizing means 30. Particularly, in the case where the light source is provided, the remaining portions are dark or black in birefringent medium ( Only the portions 20a) and 20b have colors and light is left to form a unique aesthetic.

FIG. 14 shows a color changing apparatus 7000 where the circular polarization means, the birefringence medium, and the reflection member are arranged, except for the portion where the color change is made while the color is produced by the rotation of the birefringence medium.

In the cavity 44 of the front surface of the case 4, a polarizing means 10 is provided as a window, and a birefringent medium 20 which is rotated by a driving mechanism is installed behind the mirror 4, and is mirrored behind the birefringent medium 20. Or a reflective member 80 such as aluminum is installed.

In this case, the first polarization means 10 is a circular polarization means (left circular polarization or right circular polarization means) is a phase wave plate (10P) of 1/4 wavelength plate is coupled to the rear surface of the linear polarization means (10L).

In this case, the light passing through the first polarization means 10, which is the circular polarization means, is immediately reflected by the reflective member 80 at the periphery of the birefringence medium 20 and then reflected. The left and right sides change (in other words, the left circular polarization becomes the right circular polarization and the right circular polarization becomes the left circular polarization), resulting in a half-wave difference, and the light reflected and passed through the retardation plate is polarized by the original linear polarization means. Linear polarization perpendicular to the direction results in no light passing.

Accordingly, in the part of the birefringent medium 20, the color change occurs, except for this part, the remaining part is dark or black.

In the above-described embodiment according to the invention, different colors may appear depending on the position of the eye of the viewer, which means that the first polarizing means 10, the birefringence medium 20 and the first The path of the light passing through the two polarizing means 30 to reach the eyes of the user may occur in different cases. Therefore, even if the driving mechanism 50 is not driven, a color change can be seen as the viewer changes the position.

On the other hand, according to the present invention, the first polarizing means 10, the birefringent medium 20 and the second polarizing means 30 for the color changing apparatuses 1000a and 1000b as shown in Figs. 1A and 1B. When rotating at a constant speed, even if the position of the viewer's eyes does not change, relatively, the first polarizing means 10, the birefringent medium 20 and the second polarizing means 30 passes through the user's eyes The path of light to be reached is different, and you can feel the change of color without changing the position of the viewer's eyes unless you see it from the center. In this case, the first polarization means 10, the birefringence medium 20 and the second polarization means 30 may be attached to each other to rotate integrally, as shown in FIG. May be rotated.

FIG. 15 shows that the first polarizing means 10, the birefringent medium 20, and the second polarizing means 30 are all rotatably installed in the case 4, all of which are driven by the driving mechanism 50 and rotated at constant speed. Seems to be.

In this case, the first polarization means 10, the birefringence medium 20 and the second polarization means 30, which are rotatably installed in the case 4, and are sequentially arranged, are composed of gears on the outer circumference thereof. The connecting gears 11, 21, 31 are engaged.

Each connecting gear 11, 21, 31 is mounted on a common shaft 48, which is connected to the motor 55 and the belt 54 to receive power.

The gear ratio of these first polarization means 10 and the connecting gear 11, the gear ratio of the birefringent medium 20 and the connecting gear 21, the second polarization means 30 and the connecting gear 31 Are all the same, and accordingly, the first polarizing means 10, the birefringent medium 20 and the second polarizing means 30 are all rotated at a constant speed,

In addition, as shown in FIG. 3, in the case of the color changing apparatus 2000 including the polarizing means 10, the birefringent medium 20, and the reflective member 80, the polarization means 10 and the birefringent medium 20 are uniformly rotated. Even if the position of the eye of the viewer is not changed by rotating the color, the color may change according to the rotation.

As described above, the present invention provides a color changing apparatus in which the polarization means and the birefringence medium are relatively rotated with each other according to the driving of the driving mechanism, and thus the color change is visible through the polarization means exposed to the outside.

Such a color changing device according to the present invention, on the one hand, can create a new aesthetic because the peripheral portion can produce a change of color in the dark, and can greatly increase the attention.

The present invention also provides an indicator in which a change in color is displayed according to the movement of the indicating means, whereby the movement of the indicating means can be recognized in accordance with the change in color.

Such an indicator according to the present invention can produce a change in color according to the movement of the indicator means in the dark portion of the periphery can create a new aesthetic and greatly increase the attention.

Furthermore, according to the color changing apparatus or the indicator according to the present invention, in the polarization means or the birefringence medium, different polarization directions or different birefringence characteristics are formed to form regions of these colors or depending on the situation where these regions overlap each other. You can produce change and change in shape or form.

On the other hand, in the color changing apparatus or indicator according to the present invention, the birefringence medium may be used in which the birefringence characteristics are not uniform at all or throughout, and in this case, the color appears different according to the non-uniform birefringence characteristics and the change is also made. Will be different.

On the other hand, according to the present invention, by changing the rotation speed of the polarizing means and the birefringent medium at a constant speed or integrally, it is possible to produce a change in color.

The color changing apparatus according to the present invention can be applied to various indicators, advertisements, signs, outdoor decorations of buildings, interiors or decorations.

It will be appreciated that this has been achieved the object of the present invention. The present invention has been described with reference to the embodiments, but is not limited thereto. The scope of the present invention is defined by the following claims.

4: case
10: first polarization means
20: birefringence medium
30: second polarization means
50: drive mechanism

Claims (45)

(a) the case;
(b) first polarizing means installed in the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the first polarizing means in the case;
(d) second polarization means disposed behind the birefringent medium in the case; Wherein the first polarization means, the birefringence medium, and the second polarization means are one or any two or both of which are rotatably installed in the case, and the other is fixedly installed when only a portion thereof is rotatably installed;
(e) driving all or part of the first polarizing means, the birefringent medium and the second polarizing means rotatably, so that the first polarizing means, the birefringent medium and the second polarizing means are relatively to each other; It comprises a drive mechanism to achieve rotation;
(f) When the first polarization means, the birefringence medium, and the second polarization means rotate relative to each other according to the driving of the driving mechanism, the change of color is made through the first polarization means exposed to the outside of the case. Color changing device using polarization, characterized in that visible. The method of claim 1,
The rotation of the first polarizing means, the birefringence medium and the second polarizing means relatively by the driving mechanism
(a) the first polarization means and the birefringence medium make a relative rotation and the second polarization means is stopped; Here, the relative rotation of the first polarizing means and the birefringent medium includes a case in which any one of them is stopped and the other rotates, and all of them to rotate, the rotation speed is different,
(b) the birefringence medium and the second polarization means make a relative rotation and the first polarization means is stopped; Here, the relative rotation of the birefringent medium and the second polarizing means includes a case in which one of them is stopped and the other rotates, and all of them to rotate, the rotation speed is different,
(c) the first polarizing means and the second polarizing means make a relative rotation and the birefringence medium is stopped; Here, the relative rotation of the first polarizing means and the second polarizing means includes a case in which any one of them is stopped and the other rotates, and all of them to rotate the rotation speed is different,
(d) the first polarizing means, the birefringence medium and the second polarizing means all rotate, and their rotation speeds are all different from each other;
(e) the first polarization means and the birefringence medium rotate together and the second polarization means is stopped; Here, the case where the first polarization means and the birefringence medium is rotated together includes a case where they rotate at a constant speed and a case where the first polarization means and the birefringence medium are rotated integrally with each other,
(f) the birefringence medium and the second polarization means rotate together and the first polarization means is stopped; Here, the case where the birefringence medium and the second polarization means are rotated together includes a case where they rotate at a constant speed and a case where the birefringence medium and the second polarization means are combined with each other to rotate integrally,
(g) the first polarization means and the second polarization means rotate together and the birefringence medium is stopped; Here, the case where the first polarization means and the second polarization means are rotated together includes a case where they rotate at a constant speed and a case where the first polarization means and the second polarization means are connected to each other and integrally rotated. ,, Where:
(h) The stopping of the first polarizing means or the birefringent medium or the second polarizing means is when they are fixedly installed and stopped in the case, and they are rotatably installed in the case and are not driven by the driving mechanism. Color change device using polarized light, characterized in that it comprises a stop. The method of claim 1,
The first polarization means is adjacent to each other is composed of a plurality of zones of different polarization direction, or the birefringence medium is adjacent to each other is composed of a plurality of zones having different birefringence characteristics or is not uniform over the whole or part The non-birefringent characteristics, or the second polarization means adjacent to each other is a color changing device using polarization, characterized in that consisting of a plurality of zones different in polarization direction. The method according to any one of claims 1 to 3,
The color changing device using the polarization is a color changing device using polarization, characterized in that used for indicators, advertisements, signs, outdoor decoration of the building, interior or decoration. (a) the case;
(b) first polarizing means installed in the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the first polarizing means in the case;
(d) second polarization means disposed behind the birefringent medium in the case; Here, the first polarizing means and the second polarizing means are fixedly installed in the case, the birefringence medium is rotatably installed in the case, both the first polarizing means and the second polarizing means are linearly polarized Means, or both circularly polarizing means including linearly polarizing means and a retardation plate. If the first polarizing means and the second polarizing means are linearly polarizing means, the polarization directions have a difference between 80 ° and 100 °, and preferably have a difference of 90 °. And the second polarizing means are circularly polarizing means, one of which is left circularly polarizing means and the other is right circularly polarizing means, and the phase difference of each phase difference plate included in these two circularly polarizing means is 4 minutes at each quarter wavelength. It has a value between the minus 10% of the wavelength and the quarter wave plus 10% of the quarter wave, and preferably the quarter wave.
(e) comprising a drive mechanism for rotating the birefringence medium;
(f) when the birefringence medium rotates according to the driving of the driving mechanism, the remaining portion except for the birefringence medium is dark through the first polarization means, and the color change due to the rotation of the birefringence medium is seen. Color changing device using polarized light. The method of claim 5,
The birefringence medium is a plurality of sequential arrangement is a color change device using polarized light, characterized in that the relative rotation between each other by the drive mechanism. The method according to claim 5 or 6,
The birefringence medium is a color change device using a polarized light, characterized in that all or part of the adjacent birefringence medium is composed of a plurality of zones having different birefringence characteristics or non-uniform birefringence characteristics over the whole or part. The method of claim 5,
The color changing device is an indicator for indicating and indicating a specific value, wherein the birefringence medium is a color conversion device using polarization, characterized in that the indicating means for indicating a specific value. The method according to claim 6,
The color changing device is a watch, and the plurality of birefringent medium is a color conversion device using polarization, characterized in that forming the watch hands of the watch. (a) the case;
(b) polarizing means installed on the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the polarizing means in the case;
(d) a reflecting member disposed behind the birefringent medium in the case; Here, the polarizing means and the birefringence medium is installed in the case one or both of which is rotatable, when one is rotatably installed the other is fixed;
(e) a driving mechanism for driving all or part of the polarization means and the birefringence medium rotatably installed to drive the polarization means and the birefringence medium to rotate relative to each other; Here, the relative rotation of the polarizing means and the birefringent medium includes a case in which any one of them is stopped and the other is rotated, and all of them are rotated, the rotation speed is different, the polarization means or The stopping of the birefringence medium includes the case where they are fixedly installed in the case and stopped, and when they are rotatably installed in the case and are not driven by the driving mechanism;
(f) a color change device using polarized light according to the driving mechanism, when the polarization means and the birefringence medium make relative rotation with each other, the change in color is seen through the polarization means exposed to the outside of the case. The method of claim 10,
The polarizing means is adjacent to each other is composed of a plurality of zones with different polarization directions, or the birefringence medium is adjacent to each other is composed of a plurality of zones having different birefringence characteristics, or birefringence is not uniform over the whole or part Color changing device using polarization characterized in that it has a characteristic. The method according to claim 10 or 11,
The color changing device using the polarization is a color changing device using polarization, characterized in that used for indicators, advertisements, signs, outdoor decoration of the building, interior or decoration. (a) the case;
(b) circularly polarized means installed in the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the polarizing means in the case;
(d) a reflecting member disposed behind the birefringent medium in the case; Here, the circularly polarized means is fixedly installed in the case, the birefringence medium is rotatably installed in the case,
(e) comprising a drive mechanism for rotating the birefringence medium;
(f) when the birefringence medium rotates according to the driving of the driving mechanism, the remaining portion except for the birefringence medium is dark through the circular polarization means, and the color change is shown by the rotation of the birefringence medium. Color changing device using polarization. The method of claim 13,
The birefringence medium is a plurality of sequential arrangement is a color change device using polarized light, characterized in that the relative rotation between each other by the drive mechanism. The method according to claim 13 or 14,
The birefringence medium is a color change device using a polarized light, characterized in that adjacent to each other is composed of a plurality of areas having different birefringence characteristics or non-uniform birefringence characteristics over the whole or part. (a) the case;
(b) an indication unit installed in the case and exposed to the outside and indicating a value;
(c) first polarizing means installed in the case and exposed to the outside of the case;
(d) a birefringent medium disposed behind the first polarizing means;
(e) second polarization means disposed behind the birefringent medium; Wherein the first polarization means, the birefringence medium, and the second polarization means are one or any two or both of which are rotatably installed in the case, and the other is fixedly installed when only a portion thereof is rotatably installed;
(f) driving all or part of the first polarization means, the birefringence medium, and the second polarization means rotatably in conjunction with the indicating means to drive the first polarization means, the birefringence medium and the second polarization means; It comprises a drive mechanism for rotating the polarization means relative to each other in conjunction with the movement of the indicating means;
(g) Indicator using polarization, characterized in that the change in color is seen through the first polarizing means exposed to the outside of the case in accordance with the movement of the indicating means. 17. The method of claim 16,
The first polarization means is adjacent to each other is composed of a plurality of zones of different polarization direction, or the birefringence medium is adjacent to each other is composed of a plurality of zones having different birefringence characteristics or is not uniform over the whole or part Indicator having a birefringence characteristic, or the second polarization means adjacent to each other is composed of a plurality of zones of different polarization direction. 18. The method according to claim 16 or 17,
An indicator using polarization, characterized in that the front surface of the case is formed with a display unit for displaying the value indicated. 18. The method according to claim 16 or 17,
An indicator using polarization, characterized in that the front surface of the case is formed with a cavity to expose the first polarization means. (a) the case;
(b) an indication unit installed in the case and exposed to the outside and indicating a value;
(c) polarizing means installed in the case and exposed to the outside of the case;
(d) a birefringent medium disposed behind the polarizing means;
(e) a reflection member disposed behind the birefringence medium; Wherein the polarizing means and the birefringence medium are rotatably installed in one or both of the polarization means, and the other is fixedly installed when only a part thereof is rotatably installed;
(f) driving all or part of the polarizing means and the birefringent medium rotatably installed in conjunction with the indicating means to rotate the polarizing means and the birefringent medium relative to the movement of the indicating means relative to each other; It comprises a drive mechanism to achieve;
(g) Indicator using polarization, characterized in that the change in color is seen through the polarizing means exposed to the outside of the case in accordance with the movement of the indicating means. 21. The method of claim 20,
The polarizing means is adjacent to each other is composed of a plurality of zones with different polarization directions, or the birefringence medium is adjacent to each other is composed of a plurality of zones having different birefringence characteristics, or birefringence is not uniform over the whole or part Indicator using polarization characterized by having a characteristic. 22. The method according to claim 20 or 21,
An indicator using polarization, characterized in that the front surface of the case is formed with a display unit for displaying the value indicated. 22. The method according to claim 20 or 21,
An indicator using polarization on the front surface of the case characterized in that the cavity portion is exposed to the polarization means is formed. (a) the case;
(b) indicating means installed in the case and indicating a value as being exposed to the outside of the case; Wherein the indicating means has polarizing means, and the polarizing means of the indicating means constitutes the first polarizing means;
(c) a birefringent medium disposed behind the first polarizing means in the case;
(d) second polarization means disposed behind the birefringent medium in the case;
(e) comprising a drive mechanism for driving the indicating means;
and (f) an indicator using polarization when the indication means is driven in accordance with the drive mechanism, a change in color is seen at the first polarization means of the indication means in response to the drive. 25. The method of claim 24,
The first polarization means is adjacent to each other is composed of a plurality of zones of different polarization direction, or the birefringence medium is adjacent to each other is composed of a plurality of zones having different birefringence characteristics or is not uniform over the whole or part Indicator having a birefringence characteristic, or the second polarization means adjacent to each other is composed of a plurality of zones of different polarization direction. The method of claim 24 or 25,
An indicator using polarization, characterized in that the front surface of the case is formed with a display unit for displaying the value indicated. The method of claim 24 or 25,
An indicator using polarization, characterized in that the front surface of the case is formed with a cavity to expose the first polarization means. (a) the case;
(b) indicating means installed in the case and indicating a value as being exposed to the outside of the case; Here, the indicating means has a polarizing means,
(c) a birefringent medium disposed behind the polarizing means in the case;
(d) a reflecting member disposed behind the birefringent medium in the case;
(e) comprising a drive mechanism for driving the indicating means;
(f) The indicator using polarized light, characterized in that a change in color is seen in the polarizing means of the indicating means when the indicating means is driven by the driving mechanism. 29. The method of claim 28,
The polarizing means is adjacent to each other is composed of a plurality of zones with different polarization directions, or the birefringence medium is adjacent to each other is composed of a plurality of zones having different birefringence characteristics, or birefringence is not uniform over the whole or part Indicator using polarization characterized by having a characteristic. 29. The method of claim 28,
An indicator using polarization, characterized in that the front surface of the case is formed with a display unit for displaying the value indicated. 29. The method of claim 28,
An indicator using polarization, characterized in that the front surface of the case is formed with a cavity to expose the indicator means. (a) the case;
(b) indicating means installed in the case and indicating a value as being exposed to the outside of the case; Wherein the indicating means has a polarizing means and a birefringent medium attached to the rear surface of the polarizing means, and the polarizing means of the indicating means constitutes the first polarizing means;
(c) second polarization means disposed behind the indicating means in the case;
(e) comprising a drive mechanism for driving the indicating means;
and (f) an indicator using polarization when the indication means is driven in accordance with the drive mechanism, a change in color is seen at the first polarization means of the indication means in response to the drive. 33. The method of claim 32,
The first polarization means is adjacent to each other is composed of a plurality of zones of different polarization direction, or the birefringence medium is adjacent to each other is composed of a plurality of zones having different birefringence characteristics or is not uniform over the whole or part Indicator having a birefringence characteristic, or the second polarization means adjacent to each other is composed of a plurality of zones of different polarization direction. 34. The method according to claim 32 or 33,
An indicator using polarization, characterized in that the front surface of the case is formed with a display unit for displaying the value indicated. 34. The method according to claim 32 or 33,
An indicator using polarization, characterized in that the front surface of the case is formed with a cavity to expose the first polarization means. (a) the case;
(b) first polarizing means installed to be exposed to the case;
(c) indicating means for indicating a value as disposed behind the first polarizing means in the case and being exposed to the outside through the first polarizing means; Wherein the indicating means has a birefringent medium;
(d) second polarization means disposed behind the indicating means in the case;
(e) comprising a drive mechanism for driving the indicating means;
and (f) an indicator using polarization when the indication means is driven in accordance with the driving mechanism, the change of color is seen through the first polarization means exposed to the case according to the driving. 37. The method of claim 36,
The indicator means is a plurality of indicators are arranged in sequence and they are relative to each other by the drive mechanism to use the polarization indicator. 37. The method of claim 36,
The birefringence medium is a color change device using a polarized light, characterized in that adjacent to each other is composed of a plurality of areas having different birefringence characteristics or non-uniform birefringence characteristics over the whole or part. 39. The method of claim 37,
The birefringence medium is a color change device using a polarized light, characterized in that adjacent to each other is composed of a plurality of areas having different birefringence characteristics or non-uniform birefringence characteristics over the whole or part. The method according to any one of claims 36 to 39,
The first polarizing means and the second polarizing means are both linearly polarizing means or both circularly polarizing means including linearly polarizing means and a phase difference plate. If the first polarizing means and the second polarizing means are linearly polarizing means, the polarization directions have a difference between 80 ° and 100 °, and preferably have a difference of 90 °. And the second polarizing means are circularly polarizing means, one of which is left circularly polarizing means and the other is right circularly polarizing means, and the phase difference of each phase difference plate included in these two circularly polarizing means is 4 minutes at each quarter wavelength. It should have a value between the minus 10% of the wavelength and the quarter wave plus the 10% of the quarter wave, and preferably the quarter wave. Indicator using polarization characterized by the above-mentioned. (a) the case;
(b) first polarizing means installed in the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the first polarizing means in the case;
(d) second polarization means disposed behind the birefringent medium in the case; Wherein the first polarization means, the birefringence medium and the second polarization means are all rotatably installed in the case;
(e) a driving mechanism for rotating both the first polarization means, the birefringence medium, and the second polarization means at constant speed;
(f) When the first polarization means, the birefringence medium, and the second polarization means rotate at constant speed according to the driving of the driving mechanism, a change in color is seen through the first polarization means exposed to the outside of the case. Color changing device using the polarization characterized in that. (a) the case;
(b) first polarizing means installed in the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the first polarizing means in the case;
(d) second polarization means disposed behind the birefringent medium in the case; Here, the first polarizing means, the birefringent medium and the second polarizing means are all rotatably coupled to each other in the case;
(e) a driving mechanism for rotating the first polarization means, the birefringence medium, and the second polarization means, which are integrally coupled;
(f) When the first polarization means, the birefringence medium, and the second polarization means are integrally rotated according to the driving of the driving mechanism, a change in color is seen through the first polarization means exposed to the outside of the case. Color changing device using the polarization characterized in that. (a) the case;
(b) polarizing means installed on the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the polarizing means in the case;
(d) a reflecting member disposed behind the birefringent medium in the case; Here, the polarizing means and the birefringence medium are both rotatably installed,
(e) a driving mechanism for rotating the polarizing means and the birefringence medium at a constant speed;
(f) a color change device using polarized light as the polarization means and the birefringence medium rotate at constant speed according to the driving of the driving mechanism, wherein a change in color is seen through the polarization means exposed to the outside of the case. (a) the case;
(b) polarizing means installed on the case and exposed to the outside of the case;
(c) a birefringent medium disposed behind the polarizing means in the case;
(d) a reflecting member disposed behind the birefringent medium in the case; Here, the polarizing means and the birefringence medium is integrally coupled and rotatably installed,
(e) comprising a driving mechanism for rotating the birefringence medium and the polarizing means coupled integrally;
(f) Color change device using polarization, characterized in that the change in color is seen through the polarization means exposed to the outside of the case when the polarizing means and the birefringent medium is integrally rotated in accordance with the drive of the drive mechanism. A birefringent medium characterized by having a birefringent medium attached to a transparent medium having no birefringence or having a birefringent medium inserted between the transparent medium having no birefringence.

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