CN101592795B - Fully automatic electronic colour-changing spectacles - Google Patents
Fully automatic electronic colour-changing spectacles Download PDFInfo
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- CN101592795B CN101592795B CN2008101130242A CN200810113024A CN101592795B CN 101592795 B CN101592795 B CN 101592795B CN 2008101130242 A CN2008101130242 A CN 2008101130242A CN 200810113024 A CN200810113024 A CN 200810113024A CN 101592795 B CN101592795 B CN 101592795B
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Abstract
The invention relates to fully automatic electronic colour-changing spectacles, belonging to the technical field of electronic colour-changing spectacles. The fully automatic electronic colour-changing spectacles are characterized in that the fully automatic electronic colour-changing spectacles comprise spectacle frames, liquid crystal lenses, a solar battery, a printing circuit board, a back cover, a CPU chip and interior cavities, wherein the interior cavities are positioned in the nose pads of the spectacle frames and are arranged among the solar battery, the back cover, a left spectacle frame and a right spectacle frame, and the liquid crystal lenses are arranged in the left spectacle frame and the right spectacle frame. The liquid crystal lenses adopt forward TN-liquid crystals. If the output voltage of the solar battery is smaller than the work threshold voltage of the CPU chip, the CPU chip is in a resting state and does not output a control voltage signal. If the output voltage of the solar battery is larger than the work threshold voltage of the CPU chip, the two output ends of the CPU chip respectively output control voltage signals with the same output frequency and dutyfactor, the voltage amplitude of the control voltage signals is in direct proportion to the work voltage of the CPU chip, the phase difference of the control voltage signals and the CPU chip is 180 degrees so that the transmittance rate of the liquid crystals is reduced; the stronger the outside light is and the higher the voltage added on the CPU chip is and the larger the control voltage amplitude on the liquid crystals is; thereby, the transmittance rate of the liquid crystals is lower, and the purpose of automatic adjustment is realized.
Description
Technical field
The present invention relates to a kind of electronically controlled liquid crystal glasses, these glasses can be regulated the transmissivity of eyeglass automatically according to ambient light, when ambient light illumination uprises, and the transmitance step-down, during ambient light illumination step-down, transmitance uprises.Its unique distinction is, the eyeglass transmissivity can be in real time change with the electric signal of control, and the control electric signal changes with the difference of ambient light, thus these glasses can be in real time with the variation of ambient light illumination the adjusting illuminance that enters human eye automatically.
Background technology
For protecting eyes not to be subjected to the stimulation of extraneous high light, wearing the color-changing solar mirror is one of preventive measure that adopt usually, and traditional light-sensitive glasses adopt photochromics to make eyeglass, utilize light to the characteristic of variable color to regulate the eyeglass transmitance.But existing light-sensitive glasses are when running into the surrounding environment light sudden change, as in the inlet chamber and tunnel etc., and transmitance that can not very fast automatic adjusting eyeglass.Cause sight line to weaken, the environment around not seeing.
The light-sensitive sunglasses of light sensitive characteristic are usually operated at the ultraviolet light wave band, are having under the sunlight that contains ultraviolet light, and photochemical reaction takes place in its eyeglass, make the eyeglass transmitance descend the eyeglass deepening.As color-changing solar mirror of Transition brand etc.
The variable color time of photosensitive colour-changing sunglasses is generally several seconds to tens seconds scope; And fading time is slightly long, generally the scope to dozens of minutes in a few minutes.Regulate with people's pupil and to change the needed time with adaptating lighting and compare, its response time is oversize.The demand that can not adapt to human eye.And, filtering under the sunlight of ultraviolet quilt, the chemical reaction of variable color can not take place, therefore behind windshield, although sunlight is dazzling, glasses just can not deepening.
Another kind of sun light-sensitive glasses utilize liquid crystal to make eyeglass by adding its transmitance of electric control in the prior art, and the sun light-sensitive glasses made from this technology generally all comprise the bigger electronic circuit of volume, and Circuits System has a lot of electronic components, need to consume very big electric current.These electronic circuits comprise analogue-to-digital converters exclusive disjunction amplifier, square-wave generator light intensity sensing element etc.The control system energy consumption of these electronic glasses is bigger,, thus this type of liquid crystal glasses generally also contain battery, switch and etc., and the essential periodic replacement of battery has not only increased the use cost of glasses but also has strengthened volume.Restricted the feasibility of this type of electronic glasses as the product for civilian use, this also is one of major reason of not seeing so far the commodity listing.
Summary of the invention
The purpose of this invention is to solve existing slow problem of photosensitive colour-changing sunglasses response time.The response time of expectation and the expansion time of human eye pupil coupling, the response time is moderate, can not be too fast, can not be too slow; Transformation period the eyeglass scintillation can occur too soon, can not change with extraneous light intensity in real time again too slowly.The moderate response time can in time be adjusted the eyeglass shading value, adapts to the variation of illuminance, and protection wearer eye pupil need not sharply be expanded and be shunk.
Light-sensitive glasses among the present invention respond at visible light wave range, and are basic identical with the reaction to spectrum of human eye.This can automatically adjust to different spectral response according to human eye with regard to having guaranteed eyeglass, and its centre wavelength is 550nm.
The purpose of this invention is at the liquid crystal sunglasses technology, reduces volume, reduce cost, and attenuating is to the consumption of electric current.The volume of control die set should be enough little, makes in its mirror holder that can be placed on sunglasses.The current drain of control die set should be little to can be with a small pieces solar cell for supplying power, little of making this glasses outward appearance almost not have different with general glasses outward appearance.
The invention is characterized in:
Contain: spectacle frame, liquid crystal lens, solar cell, printed circuit board (PCB), digital integrated chip, bonnet, and inner chamber, wherein:
Spectacle frame, this spectacle frame is made up of left and right picture frame and the nose holder that connects described left and right picture frame, and wherein, described picture frame is a sandwich-type;
Liquid crystal lens, constitute by left and right two eyeglasses, each eyeglass adopts positivity TN-liquid crystal, described each eyeglass has a pair of pin, be in two relative lip-deep electrodes with described eyeglass respectively and be connected, the transmitance of described liquid crystal lens in visible-range is relevant with control voltage on being added in described a pair of pin: when control voltage surpassed the control voltage threshold of setting but is lower than the setting maximal value of described control voltage, transmitance descended, control voltage is high more, and then transmitance is low more;
Solar cell is a sequence of being made up of a plurality of amorphous silicon class batteries, and this sequence is embedded on the lateral frame of described nose holder; The input signal of this solar cell is a sunshine, and output is the control voltage signal;
Bonnet, this bonnet are embedded on the inner frame of the close human body bridge of the nose of described nose holder hermetically;
Inner chamber is opened in described nose holder, is formed in the space that described solar cell, bonnet and left and right picture frame be combined into;
Printed circuit board (PCB) in described inner chamber, is close to the inboard of solar cell;
The numeral integrated chip, frame is on described printed circuit board (PCB), the voltage input end of this numeral integrated chip links to each other with the voltage output end of solar cell by described printed circuit board (PCB), the control voltage output end of this numeral integrated chip links to each other with two pins of two eyeglasses by described printed circuit board (PCB), is used for applying control voltage to liquid crystal lens;
Described digital integrated chip is controlled the transmitance of described liquid crystal lens according to the following steps:
Step (1), when the voltage that makes the output terminal of this solar cell be applied to described digital integrated chip input end when the suffered solar energy of solar cell is lower than the operating threshold threshold voltage that described digital integrated chip sets, then should be in dormant state by the numeral integrated chip, not have control signal output; This moment, the transmitance of liquid crystal lens arrived its maximal value.
Step (2), when the voltage that is enough to make the output terminal of this solar cell to be applied to the input end of described digital integrated chip when the suffered solar energy of solar cell surpasses the operating threshold threshold voltage of this numeral integrated chip, two control voltage signal output ends that then should the numeral integrated chip are the input voltage of output amplitude direct ratio and integrated circuit (IC) chip separately, frequency identical the also identical control voltage of dutycycle, but phase phasic difference 180 degree, at this moment the transmitance of liquid crystal lens descends with the increase of control voltage, ambient light illumination is strong more, control voltage is big more, and the eyeglass transmitance is just low more.
Electrical connection between a pair of pin of described printed circuit board (PCB) and eyeglass is to realize by a connector that passes the hole of a described left side or right picture frame.
Advantage of the present invention is: reduce energy resource consumption, volume is little, and cost is low.Specifically,
Need not external battery, only can drive with a solar cell that is embedded in the spectacle frame.
Need not switch, the transmitance of liquid crystal lens is self-regulating according to the light intensity in the external world.
Need not special light activated element, as photometry elements such as photodiodes, described solar cell has been taken into account photometry and the double action that control energy is provided.
The transmitance of liquid crystal lens is continuously adjustable, rather than has only two or several gray shade scale adjustable.
Liquid crystal lens is a polarization, thereby has certain anti-dazzle effect
Its response speed is fast, and its reaction velocity can be regulated by software and hardware.
To the visible light spectrum sensitivity, do not need ultraviolet light to drive, under the sunlight of filtering ultraviolet wavelength, equally can work, as in the automobile etc.
Description of drawings
Fig. 1 is the equal proportion outside drawing of this sunglasses.Two liquid crystal lens 3 and solar cell 4 have been installed in the spectacle frame 1, and solar cell provides electric energy to electronic circuit system, and electronic circuit system then provides electric energy to the liquid crystal eyeglass again.
What Fig. 2 represented is the direction of profile line.
Fig. 3 wants local place of amplifying among Fig. 2.
Fig. 4 is the sectional view of this sunglasses nose holder part.Spectacle frame 1 comprises the inner chamber 9 of built-in electronic element, solar cell 4 is positioned at the front surface of sunglasses, be connected with printed circuit board (PCB) 5, cpu chip 6 and other electron component are welded on the printed circuit board (PCB) 5, liquid crystal lens 3 is connected with printed circuit board (PCB) 5 by the connector 7 that passes hole 10, hole 10 may seal to prevent that water from entering inner chamber, and bonnet 8 is with bore seal.
Fig. 5 is one of theory diagram of CPU control.Solar cell 4 is converted to current potential with light, and MCU11 provides electric energy for cpu chip, and current potential also is an electric signal, serves as the input signal of MCU11.When current potential was enough high, MCU11 provided signal controlling liquid crystal lens 3, used the components and parts 12 of a stored energy, and the buffering liquid crystal lens " is opened " difference between " pass " state.
Fig. 6 be CPU control the way circuit theory diagram two.Solar cell 4 serves as power supply and sensor, and the components and parts 12 of storage power connect solar cell 4, static electronic component 13, reach cpu chip MCU11.In order to dispose cpu chip MCU11, static electronic component 13 is connected with the VSS pin with RST, VCC on the cpu chip MCU11.Liquid crystal lens 3 is connected with the output pin of cpu chip MCU11.
Fig. 7 is the process flow diagram of desirable model machine control program.When incident light illumination is higher than specific initial value, cpu chip MCU11 starts, and produces two signals and arrives its output pin, based on a particular time interval, switches between "on" and "off".
The electric signal at the different nodes of Fig. 8 display system place.Shown the dc signal from solar cell in the chart on top, the electric signal that sends when solar cell is enough high, and cpu chip MCU11 is activated and produces two square waves, and two square waves are the out-phase square wave under certain phase shift.The the 2nd and the 3rd waveform showed the output pin 1 and 2 of cpu chip MCU11.The waveform demonstration composite signal of bottom is controlled liquid crystal lens 3.
Fig. 9 shows that the transmitance of liquid crystal lens 3 under different input voltages changes.As shown in the figure, transmitance begins to descend after having crossed starting potential.
Figure 10 shows the short-circuit current and the open-circuit voltage of solar cell 4.The short-circuit current that solar cell produces, along with the illuminance on the solar cell increases and linear growth, simultaneously as shown in figure 10, after being higher than some initial values, the open-circuit voltage curve of solar cell rises more slow.
Figure 11 is sunshine luminous energy and output brightness curve figure.
Embodiment:
This invention is an electronic installation that is used as glasses, is made up of a control die set and liquid crystal lens.LCD panel is to be made of several layers, and outermost layer is a polaroid, is followed successively by glass or plastics conductive film layer ITO, PI oriented layer, liquid crystal layer.For the both sides, center become symmetrical structure, apply the alternating voltage of certain amplitude with the liquid crystal layer on two ITO conductive film layers, the transmittance of total will reduce with the rising of voltage signal.The transmitance of this liquid crystal lens determines that control die set comprises a solar cell, the cpu chip of the alternating signal of an exportable variable-magnitude and several other static electronic component by the voltage amplitude of control die set output.
The control system that plays the master control effect in sunglasses is an analog to digital mixed electronic system.The purpose of control system is to be ac signal with transform light energy, the transmitance of this ac signal control liquid crystal lens, and its system energy consumption is very little, and solar cell had both served as sensor, provided electric energy to whole electronic system again.
Control system comprises a solar cell, a cpu chip, several static electronic components, and liquid crystal lens.Cpu chip and other electron component serve as the stationary singnal generator.Signal outputs to two output pins by cpu chip, applies the voltage of enough operations on to cpu chip, and two control ends can be exported alternating signal, and this signal is added in the LCD panel two ends, has changed the transmitance of LCD panel.With alive increase, light transmission rate descends.The voltage that applies on cpu chip is less than threshold voltage, and entire chip is not worked, and the control voltage that is added on the eyeglass is zero, and at this moment the transmitance of eyeglass is maximum.
The operable electric energy of electronic circuit system is limited, and being is provided by solar cell and the energy that is stored in the static electronic component.Capacitor is used to storage power in the entire timing circulation, imposes on the ratio that electric energy may increase or reduce on the cpu chip thereby reduce.If solar cell has enough electric capacity, it also is possible rejecting capacitor from electronic circuit system.Cpu chip has been selected the product of Texas Instruments company for use, and product type is MSP430F2001, and any other cpu chip also can be used as substitute products certainly, and the selection of cpu chip is based on low-energy-consumption and size.Additional resistor and capacitor are used to dispose MSP430F2001.According to the difference of cpu chip, electronic circuit system also can have different designs.
The voltage difference that applies on cpu chip, promptly the voltage difference between reference ground voltage output pin and supply voltage output pin directly obtains from solar cell.Cpu chip does not use the sampled signal of analogue-to-digital converters or other any way.The output pin duty of cpu chip is similar to change-over switch: output pin before was will " closing " of " opening ", and output pin before was will " opening " of " pass ".Do not adopt the signal sampling exclusive disjunction most important to the power consumption that reduces cpu chip.
When being applied to voltage on the cpu chip even as big as starting it, cpu chip produces two signals.First signal on first output pin, along with fixing sequential, alternate between the reference ground voltage of cpu chip and supply voltage; Second signal on second output pin, along with fixing sequential, alternate between the reference ground voltage of cpu chip and supply voltage, under fixing differing with first signal out-phase.When being applied to undertension on the cpu chip to start it, cpu chip is exported with reference on ground voltage to two output pin.
Cpu chip outputs to two ac voltage signals on the output pin, is added on two pins of at least one liquid crystal lens.Any other eyeglass, if its transmitance is the function that applies voltage, this eyeglass also may become the substitute of liquid crystal lens.Each pin of liquid crystal lens is connected with the interior transparent conductive film layer of liquid crystal lens.Desirable model machine uses two STN-Huang/green type liquid crystal lens, is of a size of about 1000 square millimeters, certainly, the TN type, STN-ash type, the liquid crystal lens of FSTN type or other type also may become suitable substitute products.The current drain of liquid crystal lens depends on its size, and the size of liquid crystal lens depends on the size of solar cell, so the incident optical energy that receives on the transmitance of liquid crystal lens and the solar cell is complementary.。
Be applied in the consumption that the program on the cpu chip is designed to lower electric current, whenever the sampled signal that it has avoided using on analogue-to-digital converters or any other meaning all is set to park mode when cpu chip needn't start.Avoid using analogue-to-digital converters and in the time need not starting, close cpu chip, most important to the current drain that lowers total system.
The eyeglass of this sunglasses that this paper set forth, the transmitance of its light changes and difference according to the visible light that is radiated on the sunglasses.The time that transmitance changes is set between 0.1 second to 30 seconds.The transmitance level of light changes between mxm. and minimum gently constantly, and the scope of high permeability is between 25% to 85%, and the scope of minimum transmitance is between 0.5% to 50%.
The photosensitive colour-changing sunglasses is ultraviolet lights to the response peak of different spectrum, and when wearing the photosensitive colour-changing sunglasses in automobile, windshield has partly filtered out incident light spectrum medium ultraviolet light, thereby sunglasses can not deepening.Sunglasses responding to visible light among the present invention, to the response peak of spectrum in wavelength 450 nanometers between 700 nanometers, therefore, any enough bright visible light can start liquid crystal lens, for example, the non-crystal silicon solar cell that uses among the present invention is exactly a scope at visible light to the peak of spectral response.
The desirable model machine of this invention is by a solar cell module, electronic circuit system, and the liquid crystal lens that is installed in the spectacle frame is formed.The solar cell module is to adopt amorphous silicon class battery, forms a sequence by 4 to 8 independent batteries, and the size of module approximately is 10 millimeters long, 5 mm wides.The solar cell of any other type all may become suitable substitute, yet the size of solar cell may need to adjust smallerly or more greatly, thereby obtains same output electric energy.
The voltage that starts liquid crystal lens should be higher than the voltage that starts cpu chip, and this point is extremely important, and LCD panel never starts to and continues to be between the low transmission scope, can guarantee that just the transmitance variation is smooth state.Positivity type LCD panel is applicable to the sunglasses of this invention.
Cpu chip is welded on the printed circuit board (PCB), and the pin on the cpu chip is connected with bigger electrical bonding pads on the circuit board by fine rule.Pad on the circuit board is set up circuit with the pin on the liquid crystal lens and is connected, and perhaps directly welds, and perhaps is welded on pin respectively by electric wire, also can adopt other connected mode, and the pad on the circuit board is preferably adjacent with the pin of liquid crystal lens.Each liquid crystal lens has two pins, and each pin is connected with the electrode of two inside surfaces that are positioned at liquid crystal lens glass.When applying voltage on to pin, between two electrodes of liquid crystal lens, can form an electric field intensity, the bipolar moment of liquid crystal molecule has been reversed in the existence of electric field, make itself and electric field reversed arrangement, stop liquid crystal molecule to remove to reverse polarized light, thereby reduce the transmitance of light by being attached to polaroid on the liquid crystal lens by liquid crystal lens.
Claims (10)
1. fully automatic electronic colour-changing spectacles is characterized in that, contains: spectacle frame, and liquid crystal lens, solar cell, printed circuit board (PCB), cpu chip, bonnet, and inner chamber, wherein:
Spectacle frame, this spectacle frame is made up of left and right picture frame and the nose holder that connects described left and right picture frame, and wherein, described picture frame is a sandwich-type;
Liquid crystal lens, constitute by left and right two eyeglasses, each eyeglass adopts positivity TN-liquid crystal, described each eyeglass has a pair of pin, two relative with being in described eyeglass respectively lip-deep electrodes are connected, and the transmitance of described liquid crystal lens in visible-range is relevant with control voltage on being added in described a pair of pin: when control voltage surpassed the control voltage threshold of setting but is lower than the setting maximal value of described control voltage, transmitance descended, control voltage is high more, and then transmitance is low more;
Solar cell is a sequence of being made up of a plurality of amorphous silicon class batteries, and this sequence is embedded on the lateral frame of described nose holder; The input signal of this solar cell is a sunshine, and output is the control voltage signal;
Bonnet, this bonnet are embedded on the inner frame of the close human body bridge of the nose of described nose holder hermetically;
Inner chamber is opened in described nose holder, is formed in the space that described solar cell, bonnet and left and right picture frame be combined into;
Printed circuit board (PCB) in described inner chamber, is close to the inboard of solar cell;
Cpu chip, frame is on described printed circuit board (PCB), the voltage input end of this cpu chip links to each other with the voltage output end of solar cell by described printed circuit board (PCB), the control voltage output end of this cpu chip links to each other with two pins of described two eyeglasses by described printed circuit board (PCB), is used for applying control voltage to liquid crystal lens;
Described cpu chip is controlled the transmitance of described liquid crystal lens according to the following steps:
Step (1), when the voltage that makes the output terminal of this solar cell be applied to described cpu chip input end when the suffered solar energy of solar cell is lower than the operating threshold threshold voltage that described cpu chip sets, then this cpu chip is in dormant state, does not control voltage output;
Step (2), when the voltage that is enough to make the output terminal of this solar cell to be applied to the input end of described cpu chip when the suffered solar energy of solar cell surpasses the operating threshold threshold voltage of this cpu chip, then two of this cpu chip control voltage signal output ends separately output amplitude be proportional to first operating voltage, the frequency of integrated circuit (IC) chip identical the second also identical operating voltage of dutycycle, but phase phasic difference 180 degree, and both subtract each other back formation control voltage.
2. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that, the electrical connection between a pair of pin of described printed circuit board (PCB) and eyeglass is to realize by a connector that passes the hole of a described left side or right picture frame.
3. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that, at storage capacitor in parallel of the output terminal to the cpu chip power supply of described solar cell.
4. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that, the input end of described cpu chip has inserted the bleeder circuit of a capacitance-resistance series connection.
5. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that, described liquid crystal lens is the yellowish green or grey type liquid crystal lens of STN-.
6. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that, described bonnet is the part of mirror holder.
7. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that the input of described solar cell is visible light only.
8. fully automatic electronic colour-changing spectacles according to claim 7 is characterized in that, described wavelength of visible light in 400 nanometers between 700 nanometers.
9. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that, transmitance changes the time of response between 0.06 second to 30 seconds.
10. fully automatic electronic colour-changing spectacles according to claim 1 is characterized in that, the difference of the phase place described in the step (2) is set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101130242A CN101592795B (en) | 2008-05-27 | 2008-05-27 | Fully automatic electronic colour-changing spectacles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101130242A CN101592795B (en) | 2008-05-27 | 2008-05-27 | Fully automatic electronic colour-changing spectacles |
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| CN101592795A CN101592795A (en) | 2009-12-02 |
| CN101592795B true CN101592795B (en) | 2010-12-01 |
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| CN102551953B (en) * | 2012-03-08 | 2013-11-20 | 厦门高科防静电装备有限公司 | Automatic light-transforming blinkers for welding operation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2129938Y (en) * | 1992-08-19 | 1993-04-14 | 黄秉全 | Electronic colour changing glasses |
| CN2207591Y (en) * | 1994-07-12 | 1995-09-13 | 庄庆荣 | Electronic light variable glasses |
| CN2241351Y (en) * | 1995-11-20 | 1996-11-27 | 张新仓 | Electronic liquid crystal photochromic glasses |
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2008
- 2008-05-27 CN CN2008101130242A patent/CN101592795B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2129938Y (en) * | 1992-08-19 | 1993-04-14 | 黄秉全 | Electronic colour changing glasses |
| CN2207591Y (en) * | 1994-07-12 | 1995-09-13 | 庄庆荣 | Electronic light variable glasses |
| CN2241351Y (en) * | 1995-11-20 | 1996-11-27 | 张新仓 | Electronic liquid crystal photochromic glasses |
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