CN2651062Y - Wing mirror for eliminating influence on human eye by strong light reflection in real time - Google Patents

Abstract

The utility model provides a rearview mirror, in particular to a rearview mirror which is formed by a photoelectric imaging device and can eliminate the effect of the strong light reflection on human eyes in real-time. The utility model comprises a light source auto-orientation system and a partial shading mirror system. Wherein, the light source auto-orientation system comprises a mini-camera lens which can get monochrome image recording, while the partial shading mirror system comprises an LCD screen and a plane mirror fixed together with the LCD screen; photoelectric signals are transmitted between the two systems by a circuit board. With the change of liquid crystal opticity affected by the applied voltage, when the strong light irradiates the rearview mirror or the reflector, an image signal acquired by the mini-camera forms opaque spots corresponding to the strong light spots on the LCD screen after the left and right and monochrome turning processing, therefore attenuates the brightness of the light source directly entering the human eyes in real-time and selectively and ensures that the driver can see the surrounding and back of the vehicle in the strong light.

Description

The back mirror of the influence that a kind of real-time elimination emergency light reflex causes human eye

Technical field

The utility model relates to a kind of back mirror, and the particularly a kind of back mirror that can eliminate the influence that emergency light reflex causes human eye in real time that is made of the photoelectronic imaging device can be directly installed on the automobile vehicle such as (especially roadlice and motor bikes) and use.

Background technology

At present, back mirror that uses for chaufeur on the vehicle such as automobile or motor bike or light deflector generally all are with common minute surface making, and chaufeur utilizes them can observe the particularly situation of other vehicle of rear and peripheral scenery at any time.Yet, when there is the intense light source of direct irradiation backsight or light deflector in the back (as the headlight of other vehicle), the dazzling radiance of seeing in the mirror of a slice often, chaufeur not only can not be discerned the scenery of back, and is difficult to observe the scenery in the place ahead.This all is disadvantageous to chaufeur and safety traffic on every side.

As everyone knows, as to being positioned over two liquid crystal between the orthogonal polaroid, promptly LCD applies voltage, and the optical activity of liquid crystal can be influenced by this, and this LCD can become opaque from original transparent.According to this principle, this case contriver once proposed Australian patent application Prov.No.8738 in 1993, this application has been utilized camera and image liquid crystal display principle design a kind of anti-high light direct projection glasses.These glasses mainly obtain picture signal by camera, show on the liquid crystal display before being positioned over human eye after the electronic image processing.This device utilizes the optical activity characteristics of liquid crystal, and promptly light source is strong more, and the corresponding with it image spot on liquid crystal display is just dark more, realizes the effect of the brightness of decay due south intense light source thus.

Chinese patent application CN1083933A discloses a kind of electronic glasses that utilizes the liquid crystal matrix sheet to make eyeglass.This invention is divided into several unit with each eyeglass, judge by the solid state image sensor that is combined with convex lens and the orientation of intense light source under the control of control circuit, to make any one unit deepening of eyeglass, promptly produce grazing point, reach selective purpose of covering light.

The characteristic that above-mentioned two open files have all utilized the optical activity of liquid crystal to change under the external voltage effect, and it is for people to use all to be designed to the profile of glasses.But because the liquid crystal display eyeglass is too near apart from human eye, human eye can not can be seen the image on the liquid crystal display at a distance again clearly when seeing scenery clearly, therefore, is difficult to obtain the shadowed layer effect of expection in practice.For the latter, its architectural feature is fully not open, and the public can't be known the mode of its realization.

Summary of the invention

Task of the present utility model provides the back mirror of the influence that a kind of real-time elimination emergency light reflex causes human eye.

The utility model is achieved in that it mainly is made up of light source self-orientation and local shading mirror plane system, wherein the light source automatic position system comprises a minisize pick-up head that can obtain monochrome image recording, shadowed layer minute surface system then constitutes by a liquid crystal display (LCD) screen with plane mirror that this LCDs is fixed together, between two systems by circuit card light conducting electric signal.The action principle of this light deflector be the picture signal that obtains by camera through about and form negative-appearing image on the liquid crystal display of black and white upset before being placed on a plane mirror after handling.Overlapping fully by regulate the scenery that the camera coverage can make chaufeur see from backsight or light deflector with the negative-appearing image of the same scene of LCD screen demonstration.In addition, can make the utility model at no high light from behind during direct projection by certain threshold value is set, its LCD is transparent fully, and is therefore identical with the light deflector function with common back mirror; When meeting intense light source and be radiated on the light deflector, since employed camera to light intensity position and strong and weak identification and on LCD, form with the corresponding opaque spot of hot spot, the utility model can be in real time and the brightness of the direct incident human eye light source of decaying selectively, and chaufeur just almost be can't see the hot spot of back like this.Thereby make chaufeur can under the situation that the high light direct projection is arranged, still can observe vehicle back and scenery on every side.

Description of drawings

Fig. 1 is the utility model applicating example: the roadlice of night running is subjected to the irradiation of the front lamp of vehicle that travels later, and at this moment the car driver still uses conventional light deflector, and the vision of chaufeur will be had a strong impact on.

Fig. 2 is the utility model principle of work scheme drawing;

Fig. 3 is the utility model structural representation;

Fig. 4 is a side diagrammatic sketch of the present utility model;

Fig. 5 is the utility model minute surface partial structure figure.

The specific embodiment

Extremely shown in Figure 5 as Fig. 2, the utility model mainly is made up of light source self-orientation and local shading mirror plane system, wherein the light source automatic position system comprises a minisize pick-up head 1 that can obtain monochrome image recording, and inside is equipped with lead and is fixed on the connection hose 12 that can regulate camera orientation on the hold-down arm 3; Shadowed layer minute surface system is then by constitute the photosignal that conducts between cameras and LCD by the circuit card that is positioned at plane mirror 21 back 23 that is fixed in the mirror holder 2 between above-mentioned two systems with the mirror holder 2 of hold-down arm flexible connection and LCDs 21 and plane mirror 21 that is fixed on this LCDs back that is fixed in the mirror holder 2.Wherein then carrying out circuit by lead 24 as shown in Figure 5 between circuit card and LCD screen is connected.

Principle of work of the present utility model is with reference to shown in Figure 3: the light that intense light source 5 penetrates is found a view through camera 1, optical signal transmission is to the circuit module that is installed on the circuit card 23, relevant scenery is shown as a blackening point 24 through black and white upset back on liquid crystal display 21, enter human eye 4 then, so just eliminated the influence of 5 pairs of human eyes of intense light source; On the other hand, because the optical activity of LCD, the less scenery of intense light source ambient light illumination is changed then not imaging on liquid crystal display by camera through photosignal, is transparent thereby make the LCD screen with respect to the part of these scenery.Be that these scenery can directly enter human eye and masking phenomenon can not take place by back mirror or light deflector.

When reality is used, can adopt conventional approach is that LCD is provided with certain light intensity threshold value (and adjustable), processing method by electronic signal makes scenery not on liquid crystal display the imaging of all brightness less than this threshold value, making LCDs partly is that fully transparent (so method is a techniques well known with respect to these scenery, thereby do not repeat them here), promptly the utility model is identical with conventional back mirror or light deflector function.

Circuit card of the present utility model can be selected: the one, adopt existing product on the market, and the camera of promptly exportable simulation video signal and the image LCD screen device that can import the simulation video signal need be replaced the illuminating layer of LCD back like this with plane mirror; The 2nd, with charge-coupled device (the Charge Coupled Device in the digital camera commonly used, CCD) or complementary metal oxide semiconductor (Complementary Metal-Oxide Semi-conductor, CMOS) directly and the special-purpose driver module that is installed in the light deflector back of LCD (this module also is installed in 23 position, it is similar to be furnished with the pick up camera of LCD on its design and the market) be connected, and be converted to digital signal after not needing video signal is converted to analog signal.Equally, the illuminating layer of LCD screen back will be replaced by plane mirror.

Except that camera and electronic circuit, conventional back mirror or the light deflector installed on the basic and present vehicle of the profile of whole device are identical, and can regulate backsight or reflective mirror orientation according to the needs of oneself by chaufeur, to obtain suitable visual range.The orientation of minisize pick-up head and image pickup scope also can be regulated separately.In actual use, the user can regulate the orientation of mirror, suitably regulates the direction of camera again, makes the blackening point that forms on the liquid crystal image read-out just in time with in backsight or the light deflector see corresponding intense light source location overlap.

The utility model also can be installed in two sides of automobile, and profile is identical with common backsight or light deflector, and driving power directly obtains from the dc battery jar in the automobile with normal power cord.

Claims (6)

1. back mirror of eliminating in real time the influence that emergency light reflex causes human eye, it is characterized in that this back mirror comprises light source self-orientation and local shading mirror plane system, wherein the light source automatic position system comprises a minisize pick-up head (1) that can obtain monochrome image recording, shadowed layer minute surface system then includes LCDs (21), passes through the photosignal between circuit card (23) conduction camera and LCDs between above-mentioned two systems.

2. back mirror according to claim 1 is characterized in that the connection hose (12) that described camera (1) is equipped with lead by inside and can regulates camera orientation is fixed on the hold-down arm (3).

3. back mirror according to claim 1 is characterized in that described shadowed layer minute surface system also comprises a plane mirror (22) that is fixed on LCDs (21) back, and both are confined by mirror holder (2) jointly.

4. back mirror according to claim 1 is characterized in that described circuit card (23) is arranged in plane mirror (22) back and is fixed on mirror holder (2).

5. according to claim 1 or 4 described back mirrors, it is characterized in that carrying out circuit by lead (24) between described circuit card (23) and LCDs (21) is connected.

6. according to claim 2,3 or 4 described back mirrors, it is characterized in that described mirror holder (2) and hold-down arm (3) flexibly connect.

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