JP2008181064A - Electronic sunglass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic sunglasses capable of making liquid crystal structures perform displaying of the colors matched with a user's liking, such as liking of an individual person, a location and fashion. <P>SOLUTION: The electronic sunglasses 1 using a pair of the liquid crystal structures 2A, 2A laminated with liquid crystals for RGB beforehand image a subject having a color desired by the user, and subject the imaging light obtained by the imaging to color separation to three primary color light, then subject the light to photoelectric conversion to create three primary color signals in a color signal creation section 5. Thereafter, calculation is performed in a correction table calculation section 61 by using a correction table in which the parameter set in a parameter setting section 63 in order to previously perform a conversion to create the three primary color correction signal from the three primary color signals and the three primary color signals created in the color signal creating section 5 are associated to obtain a correction signal for each color. A driving voltage to be supplied to a transparent electrode for each color of the liquid crystal structure 2A is created in a driving voltage supply section 62 from the correction signal for each color. Then, the transmittance or reflectivity of the liquid crystals for each color complying with the driving voltage is changed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic sunglasses for coloring a color in accordance with a user's preference such as personal preference, place, and fashion.

Sunglasses of various colors are commercially available, and by selecting from these, personal fashion with sunglasses that suits the user's preference such as personal preference, location, fashion, etc. was achieved.
Some sunglasses use liquid crystals for the lens and change the light transmittance of the liquid crystals to change the color shade of incident light of a single color. .
FIG. 9 is a perspective view showing a conventional electronic sunglasses described in Patent Document 1. In FIG.

  As shown in FIG. 9, a conventional electronic sunglasses 100 includes a spectacle body frame portion 102 having a pair of lens holding portions 101, 101 and a pair of ear hooks integrally attached to both ends of the spectacle body frame portion 102. Frame parts 103 and 103, a solar cell 104 attached to the upper part of the spectacle body frame part 102, and a pair of lens holding parts 101 and 101. The voltage generated by the solar cell 104 converts the incident light into a single color. A pair of liquid crystal structures 101A and 101A whose transmittance changes with respect to each other, and a voltage generated in the solar cell 104 is supplied to the pair of liquid crystal structures 101A and 101A, so that the pair of liquid crystal structures 101A and 101A By changing the transmittance of 101A and changing the amount of light transmitted through the pair of liquid crystal structures 101A and 101A, the user's preference is met. So there was a thing.

Not only such electronic sunglasses 100 but also sunglasses using ordinary photochromic, there are some which increase or decrease the transmittance with respect to incident light of a single color.
JP-A-6-43406

  However, in the sunglasses as described above, only the transmittance of incident light of a single color is changed, and there is no sunglasses that can be changed into various colors according to the user's preference such as personal preference, place, and fashion.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and an object of the present invention is to provide an electronic sunglasses capable of displaying various colors in accordance with user preferences such as personal preference, place, and fashion. It is.

In order to solve the above problems, the invention according to the claims of the present application has the following configuration.
That is,
An eyeglass body frame having a pair of lens holding parts, a pair of ear hooking frame parts provided at both ends of the eyeglass body frame, and a pair of red transparent electrodes attached to the pair of lens holding parts on the substrate A liquid crystal structure in which a liquid crystal for red sandwiched between a pair of transparent electrodes for green, a liquid crystal for green sandwiched between a pair of transparent electrodes for green, and a liquid crystal for blue sandwiched between a pair of transparent electrodes for blue are respectively laminated. In this case, a subject having a color desired by the user is imaged in advance, and the imaging light obtained by imaging is color-separated into three primary color lights, and then photoelectrically converted to generate a three primary color signal. A color signal generation unit including an optical lens, a color filter, and a photoelectric conversion unit, and a three-primary-color correction signal from the three-primary-color signal in advance before the subject is prepared according to a user's request by a user operation A parameter setting unit for setting parameters for performing conversion, and a correction table for obtaining the three primary color correction signals from the parameters and the three primary color signals, and performing an operation using the correction table A correction table calculation unit for generating the three primary color correction signals from the three primary color signals generated by the color signal generation unit, and the three primary color correction signals generated by the correction table calculation unit for each color of the liquid crystal structure An electric circuit unit for supplying a driving voltage to the electrode for driving as a driving voltage is provided integrally with the spectacle body frame or the ear hooking frame unit, and the liquid crystal structure is connected to each transparent electrode for each color. The electronic sensor is characterized in that the transmittance or reflectance of each color light is changed in accordance with whether or not the drive voltage is supplied or the voltage level between the color electrodes. Glass.

According to the electronic sunglasses of the present invention, a subject having a color desired by the user is imaged in advance, and the imaging light obtained by imaging is color-separated into three primary color lights, and then photoelectrically converted to obtain the three primary color signals. A color signal generation unit configured to include a condenser lens, a color filter, and a photoelectric conversion unit, and the three primary color signals in advance before the subject is prepared according to a user's request by a user operation. A parameter setting unit for setting a parameter for performing conversion for generating a three primary color correction signal, and a correction table for obtaining the three primary color correction signal from the parameter and the three primary color signal. A correction table calculation unit that performs the calculation used to generate the three primary color correction signals from the three primary color signals generated by the color signal generation unit, and the correction table calculation unit generates the three primary color correction signals. An electric circuit unit for supplying a primary color correction signal as a driving voltage to each color electrode of the liquid crystal structure is provided integrally with the spectacle body frame or the ear hooking frame unit, and the liquid crystal structure The body is configured to change the transmittance or reflectance of each color light according to the presence or absence of the supply of the drive voltage to each of the color transparent electrodes or the voltage level between the color electrodes. Based on the obtained color signal, the liquid crystal structure displays the color according to the user's preference such as personal preference, place, fashion, etc. by causing the liquid crystal structure to display the color according to the user's preference. Can be done.

Below, the electronic sunglasses which concern on embodiment of this invention are demonstrated using FIGS.
FIG. 1 is a perspective view showing an appearance of an electronic sunglasses according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing the configuration of the liquid crystal structure.
FIG. 3 is a diagram for explaining the light transmission and light reflection characteristics of the cholesteric liquid crystal.
FIG. 4 is a diagram showing the light transmittance of the cholesteric liquid crystal.
FIG. 5 is a diagram showing the reflected light distribution characteristics of the liquid crystal for each color.
FIG. 6 is a block diagram illustrating the color signal generation unit.
FIG. 7 is a block diagram illustrating the correction signal generation unit.
FIG. 8 shows a correction table.

  As shown in FIG. 1, an electronic sunglasses 1 according to an embodiment of the present invention includes a pair of eyeglass body frames 3 having a pair of lens holding portions 2, 2 and a pair of eyeglass body frames 3 attached to both side portions. The pair of liquid crystal structures 2A and 2A attached to the frame portions 4 and 4 for the ears, the pair of lens holding portions 2 and 2 of the spectacle body frame portion 3, and the reflected light emitted from the subject to the three primary colors. After the separation, calculation is performed by using a correction table having a relationship between each color signal obtained by photoelectric conversion and a parameter set in advance by the parameter setting unit 63 by the user, and each color correction signal is obtained. An electric circuit unit M that generates and supplies a drive voltage to the transparent electrodes for each color of the pair of liquid crystal structures 2A and 2A based on the correction signals for each color.

The electric circuit unit M is provided in the upper center portion of the spectacle body frame unit 3 and includes a condenser lens, a color filter, a photoelectric conversion unit, and an A / D converter, and is subject to color correction. A color signal generator 5 that generates three primary color signals by separating the imaging light from the subject 50 (FIG. 6) into each color light, and is formed at the upper end of the spectacle body frame unit 3 and is generated by the color signal generator 5. A correction signal generation unit 6 that generates a correction signal for each color from the three primary color signals and supplies the correction signal for each color to the transparent electrodes for each color of the pair of liquid crystal structures 2A and 2A; The switch SW 7 is attached to the upper end so as to be adjacent to the correction signal generation unit 6 and transfers the three primary color signals generated by the color signal generation unit 5 to the correction signal generation unit 6.
Although the color signal generation unit 5 and the correction signal generation unit 6 are provided in the spectacle body frame unit 3, they may be provided separately for the ear hooking frame units 4 and 4 depending on the frame design. .

Below, the detail of each structure part is demonstrated using drawing.
First, the liquid crystal structure 2A will be described with reference to FIG.
As shown in FIG. 2, in the liquid crystal structure 2A, an antireflection film 21 is formed on the lower surface of the glass substrate 22, and a red transparent electrode 23 is formed on the upper surface. Further, in the liquid crystal structure 2A, a holding member 24 is formed so as to surround the display area of the red transparent electrode (R color transparent electrode) 23, and the red transparent electrode 26 is formed on the holding member 24. Has been. A red liquid crystal (R color liquid crystal) 25 for reflecting and transmitting red light is sealed in a gap between the red transparent electrode 23 and the red transparent electrode 26.

On the red transparent electrode 26, a glass substrate 27 and a green transparent electrode (G color transparent electrode) 28 are sequentially formed. A holding member 29 is formed so as to surround the display area of the green transparent electrode 28, and a green transparent electrode 31 is formed on the holding member 29.
In the gap between the green transparent electrode 28 and the green transparent electrode 31, a green liquid crystal (G color liquid crystal) 30 for reflecting and transmitting green light is enclosed.

As described above, a glass substrate 32 and a blue transparent electrode (B color transparent electrode) 33 are sequentially formed on the green transparent electrode 31. A holding member 34 is formed so as to surround the display area of the blue transparent electrode 34, and a blue transparent electrode 36 is formed on the holding member 34.
In the gap between the blue transparent electrode 34 and the blue transparent electrode 36, a blue liquid crystal (B color liquid crystal) 35 for reflecting and transmitting blue light is enclosed.
On the blue transparent electrode 36, a glass substrate 37 and an antireflection film 38 are sequentially laminated.

The red liquid crystal 25 reflects red light when no voltage is applied between the red transparent electrodes 23 and 26 and transmits other color light, and when a voltage is applied, the voltage level of the red liquid crystal 25 is reflected. The ratio of transmitting red light changes according to the above, and other color lights are transmitted.
The green liquid crystal 30 and the blue liquid crystal 35 have the same action as that of the red liquid crystal.

Here, wavelength characteristics of the cholesteric liquid crystal used for the red liquid crystal 25, the green liquid crystal 30, and the blue liquid crystal 35 will be described with reference to FIGS.
As shown in FIG. 3, the cholesteric liquid crystal has a liquid crystal molecule having a helical structure, and color light (for example, R (red), G) included in incident light (visible light: wavelength range 450 nm to 750 nm) when no voltage is applied. The average refractive index and the helical pitch are selected so as to reflect the color light having the same wavelength as (green) and B (blue)) and transmit the remaining light.
When light is incident on the cholesteric liquid crystal, the wavelength λo of the light reflected by the cholesteric liquid crystal has an average refractive index of cholesteric liquid crystal nch and a helical pitch p,
λo = nch × p (1)
It is represented by

Then, as shown in FIG. 4, when a voltage having a magnitude that aligns liquid crystal molecules in a certain direction is supplied to the spiral liquid crystal, the incident light is not reflected but is all transmitted light.
When no voltage is applied to the liquid crystals for each color, the R color liquid crystal 25, the G color liquid crystal 30, and the B color liquid crystal 35 have the R, G, B reflected light spectral characteristics shown in FIG. 1) nch and p in the equation are selected. The ratio of the reflected light to the incident light is controlled by the level of the voltage applied to the R color liquid crystal 25, the G color liquid crystal 30, and the B color liquid crystal 35.
The cholesteric liquid crystal can extract incident light as reflected light having a predetermined polarization plane with the liquid crystal for each color, so that a polarizing plate is unnecessary.

Next, the color signal generation unit 5 will be described with reference to FIG.
As shown in FIG. 6, the color signal generation unit 5 collects the reflected light 50 a reflected by the subject 50 when the subject 50 is irradiated with incident light, and the collecting lens 51 collects the reflected light 50 a. A color filter 52 that transmits the emitted light and separates into R (red), G (green), and B (blue) color light having the reflected light spectral characteristics of R, G, and B shown in FIG. Each color light separated by the color filter 52 is received and photoelectrically converted to generate a color signal corresponding to each color light, and a photoelectric conversion unit 53 including light receiving elements PDr, PDg, and PDb, and a photoelectric conversion unit 53. The A / D converter 54 converts the color signal corresponding to each color light into the digital color signals Vr, Vg, Vb.

Next, the correction signal generation unit 6 will be described with reference to FIG.
As shown in FIG. 7, the correction signal generation unit 6 includes a storage unit 60 that stores the digital color signals Vr, Vg, and Vb generated by the color signal generation unit 5 when the Sw signal output from the switch SW7 is ON. The digital color signals Vr, Vg, Vb stored in the storage unit 60 are read when the Sw signal is OFF, the digital color signals Vr, Vg, Vb are corrected, and the liquid crystal structure 2A is displayed in the color desired by the user. And a correction table calculation unit 61 having a correction table for generating correction signals for each color to be displayed.

  Further, the correction signal generation unit 6 includes a drive voltage supply unit 62 that supplies a drive voltage for each color to the transparent electrode for each color of the liquid crystal structure 2A based on the correction signal for each color generated by the correction table calculation unit 61. Before the subject 50 is prepared according to the user's request by the user operation, conversion for generating the above-described correction signals for each color from the digital color signals Vr, Vg, and Vb generated in advance by the color signal generation unit 5 is performed. And a parameter setting unit 63 for setting parameters for the purpose.

Next, the correction table calculation unit 61 will be described with reference to FIG.
The correction table calculation unit 61 has a correction table shown in FIG.
This correction table corrects each color based on the digital signals Vr, Vg, Vb generated by the color signal generator 5 and the parameters Tr0, Tg0, Tg1, Tb1, Tr2, Tb2 set by the parameter setting unit 63. It is a table for producing | generating a signal.
In the figure, R0 to R3, G0 to G3, B0 to B3 are correction signals for each color, and Tr0, Tg0, Tg1, Tb1, Tr2, and Tb2 are parameters set by the user.

Further, the correction table shown in FIG. 8 shows the correction signals for each color generated when Vr>Vg> Vb, Vg>Vb> Vr, Vb>Vr> Vg, and Vr = Vg = Vb.
In FIG. 8, when Vr>Vg> Vb, Vb is the minimum level, when Vg>Vb> Vr, Vr is the minimum level, and when Vb>Vr> Vg, Vg is the minimum level. Yes. If the parameters and the digital color signal are known, a correction signal for each color can be obtained by performing an operation using this correction table.

Next, the operation will be described.
First, as described above, parameters are set in advance according to the use location of the user and the user's preference.
Next, when the color of the liquid crystal structure 2A of the electronic sunglasses 1 shown in FIG. 1 is to be changed, the color signal generator 5 shown in FIG. 6 is directed to the subject 50 having a color corresponding to the color to be changed. At the same time, the subject 50 is irradiated with illumination light (not shown).
The color signal generation unit 5 condenses the reflected light 50a reflected by the subject 50 on the color filter 52 by the condenser lens 51, and then color-separates it into R, G, B color light, and a light receiving element corresponding to each color light Each color signal is generated by photoelectric conversion with PDr, PDg, and PDb. Thereafter, the color signal generation unit 5 converts the color signals generated by the light receiving elements PDr, PDg, and PDb into digital signals by the A / D converter 54 and outputs the digital color signals Vr, Vg, and Vb.

  Next, the switch SW7 is pressed to turn on the Sw signal, and the digital color signals Vr, Vg, Vb output from the color signal generation unit 5 are stored in the storage unit 60 of the correction signal generation unit 6 shown in FIG.

  Next, the switch SW7 is released from the pressed state to return to the original state, and the Sw signal is turned OFF. Next, the digital color signals Vr, Vg, Vb stored in the storage unit 60 immediately before turning on the Sw signal are read, and the read digital color signals Vr, Vg, Vb and the parameter setting unit 63 are set in advance. Based on the parameters Tr0, Tg0, Tg1, Tb1, Tr2, Tb2, the liquid crystal structure 2A of the electronic sunglasses 1 is displayed according to the user's usage location and the user's favorite color using the correction table shown in FIG. The correction table calculation unit 61 corrects each color to generate a correction signal for each color. Next, based on the correction signal for each color generated by the correction table calculation unit 61, the drive voltage supply unit 62 applies the color transparent electrodes 23, 26, 28, 31, 33, and 36 of the liquid crystal structure 2A for each color. Supply drive voltage.

  That is, the driving voltage for R color is supplied to the transparent electrode 23 for R color and the transparent electrode 26 for R color, and the driving voltage for G color is supplied to the transparent electrode 28 for G color and the transparent electrode 31 for G color. The B color drive voltage is supplied to the B color transparent electrode 33 and the B color transparent electrode 36.

  As a result, in the liquid crystal for each color of the liquid crystal structure 2A, reflection and transmission according to the reflected light spectral characteristics are performed, and the color of the liquid crystal structure 2A changes, so that personal preference, place, fashion, etc. The electronic sunglasses 1 capable of color display according to the user's preference are obtained.

  Next, a specific example in the case of using the electronic sunglasses 1 according to the user's preference such as personal preference, place, and fashion will be described.

<When displaying shades of color according to personal preference>
First, parameters are set in advance according to the user's usage location and the user's preference. When it is desired to darken the color display of the liquid crystal structure 2A of the electronic sunglasses 1, each parameter set by the user is set in the range of 1.0 to 1.5, and the color display of the liquid crystal structure 2A of the electronic sunglasses 1 is changed. When it is desired to increase the darkness, each parameter is set in the range of 0.5 to 1.0. Next, the subject 50 is irradiated with illumination light in a state where the color signal generation unit 5 is directed to the subject 50 corresponding to the color to be changed.
Thereafter, the same procedure as the above operation is performed, and based on the correction signals for each color generated by the correction table calculation unit 61, the transparent electrodes 23, 26 for each color of the liquid crystal structure 2A from the drive voltage supply unit 62, A drive voltage for each color is supplied to 28, 31, 33, and 36, and grayscale display is performed on the liquid crystal structure 2 </ b> A of the electronic sunglasses 1.

<When the amount of transmitted light is adjusted to the location>
In the same manner as <in the case of displaying light and shaded colors according to personal preference>, parameters are set in advance according to the user's usage location and the user's preference. In the case where the color to be displayed in the liquid crystal structure 2A of the electronic sunglasses 1 is displayed and the other colors are not displayed and brightened, no driving voltage is applied to the transparent electrode of the liquid crystal to be displayed. This can be achieved by applying a large voltage to the transparent electrode of the liquid crystal that displays the color of the liquid crystal and setting the parameters so as to be transparent.

  As described above, according to the embodiment of the present invention, the electronic sunglasses 1 captures the subject 50 having the color desired by the user in advance, and the imaging light obtained by the imaging is colored into the three primary color lights. After the separation, the color signal generation unit 5 including the condenser lens 51, the color filter 52, and the photoelectric conversion unit 53 for photoelectrically generating the three primary color signals, and according to the user's request by the user operation Before the subject 50 is prepared, a parameter setting unit 63 that sets parameters Tr0, Tg0, Tg1, Tb1, Tr2, and Tb2 for performing conversion for generating three primary color correction signals from the three primary color signals in advance, and a parameter Tr0 , Tg 0, Tg 1, Tb 1, Tr 2, Tb 2 and the three primary color signals and a correction table for obtaining the three primary color correction signals. A correction table calculation unit 61 that generates a three primary color correction signal from the three primary color signals generated by the unit 5, and the three primary color correction signals generated by the correction table calculation unit 61 as transparent electrodes 23 for the respective colors of the liquid crystal structure 2A. 26, 28, 31, and 36 with a driving voltage supply unit 62 for supplying a driving voltage, the transmittance or reflectance of each color liquid crystal can be changed. It is possible to display various colors according to user preferences such as fashion.

In addition, if a portable battery or a solar battery (not shown) is built in the spectacle body frame unit 3, a driving voltage can be supplied from these batteries to the color signal generation unit 5 and the correction signal generation unit 6. The electronic sunglasses 1 can be instantly fashionable at the place of use.
In addition, when a driving voltage is applied to the cholesteric liquid crystal, the cholesteric liquid crystal maintains the state for several seconds even when the driving voltage is turned off, so that the color displayed on the liquid crystal structure 2A can be personally selected. It can be carried and carried in the color display state according to the user's preference such as location and fashion.

It is a perspective view which shows the electronic sunglasses which concern on embodiment of this invention. It is sectional drawing which shows the structure of a liquid crystal structure. It is a figure for demonstrating the light transmission and light reflection characteristic of a cholesteric liquid crystal. It is a figure explaining the light transmittance of a cholesteric liquid crystal. It is a figure which shows the reflected light distribution characteristic of the liquid crystal for each color. It is a block diagram which shows a color signal generation part. It is a block diagram which shows a correction signal generation part. It is a figure which shows a correction table. It is a figure which shows the conventional electronic sunglasses.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic sunglasses, 2 ... Lens holding part, 2A ... Liquid crystal structure, 3 ... Eyeglass main body frame part, 4 ... Frame part for ear hook, 5 ... Color signal generation part, 6 ... Correction signal generation part, 7 ... Switch SW 21 ... Antireflection film, 22, 37 ... Glass substrate, 23 ... Red transparent electrode, 24 ... Holding member, 25 ... Red liquid crystal, 26 ... Red transparent electrode, 27 ... Glass substrate, 28 ... Green transparent electrode , 29 ... Holding member, 30 ... Green liquid crystal, 31 ... Green transparent electrode, 32 ... Glass substrate, 33 ... Blue transparent electrode, 34 ... Holding member, 35 ... Blue liquid crystal, 36 ... Blue transparent electrode, 38 ... Antireflection film, 50 ... Subject, 50a ... Reflected light, 51 ... Condensing lens, 52 ... Color filter, 53 ... Photoelectric conversion unit, 54 ... A / D converter, 60 ... Storage unit, 61 ... Correction table calculation unit 62 ... Driving voltage supply unit, 63 ... Para. Over data setting unit

Claims (1)

A spectacle body frame having a pair of lens holding portions;
A pair of ear hook frames provided at both ends of the spectacle body frame;
The red liquid crystal is attached to the pair of lens holding portions and sandwiched between the pair of red transparent electrodes, the green liquid crystal sandwiched between the pair of green transparent electrodes, and the pair of blue transparent electrodes. A liquid crystal structure in which the blue liquid crystal is laminated,
A condenser lens for imaging a subject having a color desired by a user in advance, color-separating imaging light obtained by the imaging into three primary color lights, and photoelectrically converting the three primary color signals; A color signal generation unit including a color filter and a photoelectric conversion unit;
A parameter setting unit for setting parameters for performing conversion for generating three primary color correction signals from the three primary color signals in advance before the subject is prepared according to a user's request by a user operation;
A correction table for obtaining the three primary color correction signals from the parameters and the three primary color signals is provided, and an operation using the correction table is performed to calculate the three primary color signals from the three primary color signals generated by the color signal generation unit. A correction table calculation unit for generating three primary color correction signals;
An electric circuit unit for supplying the three primary color correction signals generated by the correction table calculation unit to each color electrode of the liquid crystal structure as a driving voltage; Provided integrally with the frame part for
The liquid crystal structure is configured to change the transmittance or reflectance of each color light according to the presence or absence of the supply of the driving voltage to each of the color transparent electrodes or the voltage level between the color electrodes. Electronic sunglasses.

Images