CN2290865Y

CN2290865Y - Light controlled colour changing electronic glasses

Info

Publication number: CN2290865Y
Application number: CN 97208445
Authority: CN
Inventors: 段小伍; 冯烽; 冯国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-28
Filing date: 1997-01-28
Publication date: 1998-09-09
Anticipated expiration: 2007-01-28

Abstract

The utility model relates to a light controlled colour changing electronic glasses. The utility model is composed of a glasses rack, LCD liquid crystal eyeglasses, a light control switch circuit and a cell. The light control switch circuit is installed on the glasses rack. The battery is a button small cell of 1.5V or 3V, a power supply converting circuit is arranged between the button cell and the light control switch circuit. The power supply converting circuit is composed of a square oscillator, voltage boosting circuits and a feedback voltage-stabilizing control circuit. The feedback voltage-stabilizing control circuit is arranged between the voltage boosting circuits. The utility model adopts the power supply converting circuit to convert the low voltage of the button cell to higher working voltage of the eyeglass; thereby, the utility model can be started with low voltage; thus, the volume of th cell is reduced.

Description

Light-operated variable color electronic glasses

The utility model is a kind of light-operated variable color electronic glasses.

In prior art; because the lens structure of electronic color-changing glasses uniqueness; make its effect of blocking high light and the protective effect of eyes all is better than existing coloured glass glasses and plated film glass glasses, therefore, it has demonstrated its vitality in numerous sunglassess.Existing electronic color-changing glasses are made up of spectacle frame, LCD liquid crystal lens, light-controlled switching circuit and battery, wherein the LCD liquid crystal lens is a kind of electronics eyeglass of passive type, it will could realize variable color under the effect of extra electric field, therefore, it must utilize light-controlled switching circuit to go to respond to high light and energized, just can finish the function of automatic color-changing under high light.Though existing electronic color-changing glasses all can be realized the function of automatic color-changing by different circuit structures, total problem is that the battery volume is big.This is because the variable color voltage of eyeglass generally is 3～9V, so must use button cell or macrocell more than two.Use just battery can't being loaded on the mirror holder of macrocell, though use being contained on the mirror holder of two button cells, make mirror holder too heaviness, weight increase the weight of, also influenced outward appearance appearance.This is one of key factor that influences this product promotion application.

The purpose of this utility model is in order to reduce the battery volume, to provide a kind of and can utilize low-voltage (1.5～3V) the light-operated variable color electronic glasses that start.

For achieving the above object, solution of the present utility model is as follows: it is made of mirror holder, LCD liquid crystal lens and the light-controlled switching circuit and the battery that are contained on the mirror holder, its key structure is: described battery is the button baby battery of one 1.5 or 3V, is provided with a power converting circuit and is used for the voltage transformation of button baby battery is become higher eyeglass operating voltage between button baby battery and light-controlled switching circuit; Described power converting circuit is made of square-wave oscillator, booster circuit and the feedback regulation control circuit that is located between booster circuit input, the output terminal.

By above-mentioned solution as can be seen, the utility model has adopted a power converting circuit that the low-voltage of button cell is transformed into higher eyeglass operating voltage, has realized the function that low-voltage starts, thereby has reduced the battery volume.Therefore, superiority of the present utility model is that the battery volume is little, is convenient to be installed on the mirror holder, for advantage has been created in the outward appearance appearance of this kind glasses.

Describe structure of the present utility model and principle of work in detail according to embodiment below.

Fig. 1, one-piece construction synoptic diagram of the present utility model.

Fig. 2, the eyeglass cross-sectional view.

Fig. 3, the schematic diagram of power converting circuit and light-controlled switching circuit.

Referring to Fig. 1, this is an outside drawing of the present utility model, and sequence number (1) is a mirror holder, and (2), (6) are the LCD liquid crystal lens.Described power converting circuit and light-controlled switching circuit are made integrated and are installed in the nose-bridge frame (3), and wherein (4) are power switches, and (5) are photosensitive tubes.Described button cell (7) is installed on the mirror holder.

Referring to Fig. 2, described LCD liquid crystal lens is made of sandwich construction, its central core (10) is the semiconductor liquid crystal material, its sealed glue (11) is enclosed in the centre of layer glass (12), (13), be provided with transparent electrode layer (14) and oriented layer (15) in the inboard of layer glass successively, be provided with the Polarizer (9) of layer of transparent at the outside surface of outside glass (12).Between two electrode layers (14) not during making alive, the liquid crystal molecule electric dipole moment of liquid crystal material inside forms orderly arrangement, this state of liquid crystal material and Polarizer (9) have formed the structure as window shutter, they only allow the light identical with own direction to pass through, and block the light different with own direction, therefore, under the not too strong situation of sunlight, do not power up it and also can do the sunglasses use, it can make light soft, and eye pupil is amplified.When adding voltage between two electrodes (14), the liquid crystal molecule electric dipole moment gets muddled in the liquid crystal material, forms scattering state, makes the original state of eyeglass become milky or black, so just can stop passing through of high light.

Referring to Fig. 3, described power converting circuit is by square-wave oscillator (16), and booster circuit (17) and feedback regulation control circuit (18) constitute.Described booster circuit is by the one-level voltage amplifier, commutation diode D ₁, charging capacitor C ₂, stabilivolt D ₂And the current-limiting resistance R of stabilivolt ₄Connect and compose.Described one-level voltage amplifier is by inductance L and triode Q ₁Be connected into.Described feedback regulation control circuit is by Sheffer stroke gate N ₃, N ₄With switching tube Q ₂And resistance R ₃Connect and compose, wherein Sheffer stroke gate N ₃, N ₄Constitute the gate circuit switch of one two end input, its input end joins as the output terminal of signal input part and square-wave oscillator, and another input end is connected on switching tube Q as control end ₂Collector; Described switching tube Q ₂And resistance R ₃Be connected into a transistor switching circuit, its base stage control end is connected on current-limiting resistance R ₄On.When circuit is connected, square-wave oscillator (16) starting of oscillation, at this moment, because resistance R ₄On voltage be zero, make switching tube Q ₂End, be equivalent to gate circuit switch N ₃, N ₄Control termination high level, make gate circuit switch N ₃, N ₄Be in open mode, then the square-wave signal of square-wave oscillator (16) output is input in the booster circuit by the gate circuit switch, and this signal is through triode Q in the booster circuit ₁Amplification, diode D ₁Rectification, again to capacitor C ₂Stabilivolt D is passed through in charging again ₂Voltage stabilizing, obtain the DC voltage (this voltage can be set) of a lifting at output terminal; If this output voltage surpasses setting value, resistance R ₄On voltage can make switching tube Q ₂At this moment conducting, is equivalent to gate circuit switch N ₃, N ₄Control end ground connection, make gate circuit switch place closed condition, then square-wave signal is by temporary interruption, when the booster circuit output terminal returns to setting value, the gate circuit switch is reopened again, and so forth, makes the voltage all-the-time stable of booster circuit output on setting value.Described light-controlled switching circuit is by optical sensor (19), gate circuit switch N ₅, Si Mite trigger circuit (20) and driving circuit constitute.Wherein optical sensor is by photodiode D ₃With current-limiting resistance R ₅Be connected into; The Si Mite trigger circuit can be made of a plurality of these schmitt trigger parallel connections; Driving circuit is by triode Q ₃, square-wave oscillator (22) and voltage amplifier U ₁Constitute.This driving circuit mainly is that the DC voltage of power converting circuit output is carried out power amplification, and in order to prolong the serviceable life of eyeglass, the required operating voltage of eyeglass is transformed into the square wave alternating voltage is added on eyeglass (2), (6).The course of work of this circuit is: after circuit is connected, and photosensitive tube D ₃Be not subjected to light or be subjected to low light level when irradiation and be in cut-off state, at this moment, gate circuit switch N ₅The input end of Si Mite trigger circuit is changed to high level, and then the Si Mite trigger circuit are output as zero, triode Q ₃End, the voltage of power converting circuit output is added less than square-wave oscillator (22) and voltage amplifier U ₁Power end makes them be in the state of quitting work, and then light-controlled switching circuit is output as zero, and eyeglass keeps primary colors; As photodiode D ₃When being subjected to strong illumination, conducting immediately, gate circuit switch N ₅The upset output low level, the Si Mite trigger circuit and then overturn and export high level, then triode Q thereupon ₃Conducting makes square-wave oscillator (22) and voltage amplifier U ₁Work is added in the square wave alternating voltage of exporting on the eyeglass, makes its variable color, thereby realizes the function of automatic color-changing.

Claims

1, a kind of light-operated variable color electronic glasses by mirror holder (1), LCD liquid crystal lens (2), (6) be contained in light-controlled switching circuit on the mirror holder and battery constitutes, is characterized in that:

A, described battery are the button baby batteries of one 1.5 or 3V, be provided with a power converting circuit and be used for the voltage transformation of button baby battery is become higher eyeglass operating voltage between button baby battery and light-controlled switching circuit;

B, described power converting circuit are by square-wave oscillator (16), booster circuit (17) and be located at the booster circuit input, and the feedback regulation control circuit (18) between the output terminal constitutes.

2, light-operated variable color electronic glasses as claimed in claim 1 is characterized in that: described light-controlled switching circuit is by optical sensor (19), gate circuit switch N ₅, Si Mite trigger circuit (20) and driving circuit constitute.