CN111624833B - Optical interference device - Google Patents

Optical interference device Download PDF

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Publication number
CN111624833B
CN111624833B CN202010537983.8A CN202010537983A CN111624833B CN 111624833 B CN111624833 B CN 111624833B CN 202010537983 A CN202010537983 A CN 202010537983A CN 111624833 B CN111624833 B CN 111624833B
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China
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wavelengths
light sources
invisible light
driver
light source
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CN111624833A (en
Inventor
周腾飞
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/155—Coordinated control of two or more light sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The application belongs to the technical field of light sources and provides a light interference device. The embodiment of the application provides an optical interference device comprising a driver and at least two wavelengths of invisible light sources, so that the at least two wavelengths of invisible light sources comprise at least two wavelengths of near-infrared light sources, or at least two wavelengths of near-infrared light sources and at least one wavelength of near-ultraviolet light sources; the driver is electrically connected with the invisible light sources with at least two wavelengths respectively, the invisible light sources with at least two wavelengths are controlled to be alternately lightened in a preset period which is less than or equal to the single exposure time of the camera equipment so as to interfere the ambient light incident to the camera equipment, and at least two colored stripes with different chromaticities appear in the picture shot by the camera equipment under the condition of not being perceived by human bodies, so that the definition of the picture is reduced, the recovery difficulty of the picture is improved, and the aim of preventing the picture from being taken by a secret is fulfilled.

Description

Optical interference device
Technical Field
The application belongs to the technical field of light sources, and particularly relates to a light interference device.
Background
With the development of society and the improvement of living standard of people, various places and facilities for people to entertain, relax and travel, such as tourist attractions, hotels, public transport vehicles and the like, are continuously increased and improved. When people develop entertainment activities, shooting or recording is generally performed by using camera devices such as mobile phones, tablet computers and cameras so as to record and share activity experiences. However, people are also at risk of being candid by lawless persons when carrying out entertainment activities, and when the lawless persons carry out candid photographing by using miniature image pickup equipment such as a pinhole camera, the lawless persons are often difficult to perceive.
Disclosure of Invention
The application aims to provide an optical interference device and aims to solve the problem of how to prevent candid photographing.
The embodiment of the application provides an optical interference device, which comprises a driver and invisible light sources with at least two wavelengths;
the invisible light source with at least two wavelengths comprises a near infrared light source with at least two wavelengths, or a near infrared light source with at least two wavelengths and a near ultraviolet light source with at least one wavelength;
the driver is respectively electrically connected with the invisible light sources with at least two wavelengths and is used for controlling the invisible light sources with at least two wavelengths to be alternately lightened in a preset period so as to interfere the ambient light incident to the camera equipment;
wherein the preset period is less than or equal to a single exposure time of the image pickup apparatus.
In one embodiment, in one preset period, the lighting time lengths of the invisible light sources of at least two wavelengths are the same or not completely the same;
and/or the sum of the lighting time lengths of the invisible light sources with at least two wavelengths in one preset period is less than or equal to the preset period.
In one embodiment, the source of non-visible light of each wavelength comprises at least one non-visible light lamp;
all the invisible light lamps are regularly arranged into a two-dimensional array or a three-dimensional array, and each invisible light lamp is adjacent to at least one other invisible light lamp.
In one embodiment, the three-dimensional array is a hemispherical array or a spherical array.
In one embodiment, the optical interference apparatus further comprises a power interface and/or a battery electrically connected to the driver;
the power interface is used for supplying power to the driver when being connected with a power supply;
the battery is used to directly power the driver.
In one embodiment, the power interface comprises at least one of a mains power plug, a USB interface and a DC interface.
In one embodiment, the battery is a rechargeable battery, and the driver is further configured to charge the rechargeable battery when the power interface is connected to a power source.
In one embodiment, the optical interference apparatus further comprises at least one visible light source electrically connected to the driver;
the driver is also used for controlling at least one visible light source to be lightened when a power supply signal is switched on.
In one embodiment, the light interference device further comprises a bottom cover and a protective cover covering the bottom cover;
a cavity is formed between the bottom cover and the protective cover, and the driver and the invisible light source with at least two wavelengths are arranged on the bottom cover and located in the cavity.
In one embodiment, the optical disturbing means further comprises a switch connected to the driver;
the switch is used for triggering the driver to control the invisible light sources with at least two wavelengths to be alternately lightened in the preset period when the switch is turned on, and triggering the driver to control the invisible light sources with at least two wavelengths to be extinguished when the switch is turned off.
The embodiment of the application provides an optical interference device comprising a driver and at least two wavelengths of invisible light sources, so that the at least two wavelengths of invisible light sources comprise at least two wavelengths of near-infrared light sources, or at least two wavelengths of near-infrared light sources and at least one wavelength of near-ultraviolet light sources; the driver is electrically connected with the invisible light sources with at least two wavelengths respectively, the invisible light sources with at least two wavelengths are controlled to be alternately lightened in a preset period which is less than or equal to the single exposure time of the camera equipment so as to interfere the ambient light incident to the camera equipment, and at least two colored stripes with different chromaticities appear in the picture shot by the camera equipment under the condition of not being perceived by human bodies, so that the definition of the picture is reduced, the recovery difficulty of the picture is improved, and the aim of preventing the picture from being taken by a secret is fulfilled.
Drawings
Fig. 1 is a schematic view of a first structure of an optical interference apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating a second structure of an optical interference apparatus according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a first red stripe appearing in a picture taken by the image pickup apparatus according to the embodiment of the present application;
fig. 4 is a schematic diagram of a second red stripe appearing in a picture taken by the image pickup apparatus according to the embodiment of the present application;
fig. 5 is a schematic diagram of a third red stripe appearing in a picture taken by the image pickup apparatus according to the embodiment of the present application;
fig. 6 is a schematic diagram illustrating a comparison of pictures taken by front and rear image capturing apparatuses using a first structure of an optical interference device according to an embodiment of the present application;
fig. 7 is a schematic view of a first light source structure of an optical interference apparatus according to an embodiment of the present disclosure;
fig. 8 is a schematic view of a second light source structure of the optical interference apparatus according to the embodiment of the present application;
fig. 9 is a schematic diagram comparing pictures taken by front and rear image capturing apparatuses using an optical interference device with a second structure according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a third light source of the optical interference apparatus according to the embodiment of the present application;
fig. 11 is a schematic structural diagram of a third optical interference apparatus according to an embodiment of the present application;
fig. 12 is a schematic diagram illustrating a fourth structure of an optical interference apparatus according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a fifth optical interference apparatus according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The embodiment of the application provides an optical interference device, which can alternately emit near-infrared light with at least two wavelengths and also can alternately emit near-infrared light with at least two wavelengths and near-ultraviolet light with at least one wavelength, so as to cause interference to ambient light incident to an image pickup apparatus. Because the near-infrared light and the near-ultraviolet light both belong to invisible light and cannot be perceived by human eyes, and the near-infrared light does not cause the position irradiated by the near-infrared light of a human body to generate heat due to the same frequency resonance with the near-infrared light compared with the far-infrared light, the light interference device can enable colored stripes with different chromaticities to appear in a picture shot by the camera shooting equipment under the condition of not being perceived by the human body, thereby reducing the definition of the picture, improving the recovery difficulty of the picture and achieving the purpose of preventing the picture from being shot by theft. In addition, because the near infrared light has no radiation hazard to human bodies, the near ultraviolet light has smaller radiation hazard to human bodies than the far ultraviolet light, so that the light interference device also has the advantage of smaller radiation hazard when the light interference device alternately emits near infrared light with at least two wavelengths and near ultraviolet light with at least one wavelength. The light interference device can be integrated into a portable device, so that a user can carry the light interference device with the user, and the light interference device can be used for preventing candid photography at any time and any place.
As shown in fig. 1 or fig. 2, the optical interference device provided by the embodiment of the present application includes a driver 10 and at least two wavelengths of invisible light sources, respectively denoted as 21, 22, …, and 2M;
the invisible light sources 21-2M with at least two wavelengths comprise near infrared light sources with at least two wavelengths, or near infrared light sources with at least two wavelengths and near ultraviolet light sources with at least one wavelength;
the driver 10 is respectively electrically connected with the invisible light sources 21-2M with at least two wavelengths and is used for controlling the invisible light sources 21-2M with at least two wavelengths to be alternately lightened in a preset period so as to interfere ambient light incident to the camera equipment;
wherein the preset period is less than or equal to a single exposure time of the image pickup apparatus.
In application, all the invisible light sources can be near-infrared light sources, or one part can be near-infrared light sources and the other part can be near-ultraviolet light sources.
FIG. 1 shows that all invisible light sources 21-2M with at least two wavelengths are near infrared light sources, wherein M is more than or equal to 2 and is an integer.
FIG. 2 schematically illustrates at least two wavelengths of invisible light sources 21-2M including at least two wavelengths of near infrared light sources and at least one wavelength of near ultraviolet light sources; wherein M is not less than 3 and M is an integer.
In an application, all the invisible light sources can be connected to the driver in parallel or in a cascade manner. Fig. 1 and 2 exemplarily show that all invisible light sources are connected in parallel to the driver 10.
In application, the wavelengths of the at least two kinds of wavelength near-infrared light sources can be uniformly distributed or distributed at intervals in the near-infrared wavelength range of 780nm to 2526nm, for example, the wavelength ranges of the at least two kinds of wavelength near-infrared light sources can be respectively X1 to X2, X2 to X3, …, Xm to Xm +1, or respectively Y1 to Y2, Y3 to Y4, …, Ym +2 to Ym + 3; wherein, X is more than or equal to 780nm and less than or equal to X1 and more than or equal to X2 and more than or equal to X3 and less than or equal to Xm +1 and less than or equal to 2526nm, Y is more than or equal to 780nm and less than or equal to Y1 and more than or equal to Y2 and more than or equal to Y3 and more than or equal to Y4 and more than or equal to Ym +2 and more than or equal to Ym +3 and less than or equal to 2526nm, and m is an integer and more than or equal to 3. When the invisible light source with at least two wavelengths only comprises a near ultraviolet light source with one wavelength, the wavelength of the near ultraviolet light source can be any wavelength or wavelength range from 300nm to 400 nm. When the invisible light sources with at least two wavelengths include near ultraviolet light sources with at least two wavelengths, the wavelengths of the near ultraviolet light sources with at least two wavelengths can be uniformly distributed or distributed at intervals in the near ultraviolet wavelength range of 300nm to 400nm, for example, the wavelength ranges of the near ultraviolet light sources with at least two wavelengths can be respectively x1 to x2, x2 to x3, …, xn to xn +1, or y1 to y2, y3 to y4, …, yn +2 to yn + 3; wherein x1 is more than or equal to 300nm and more than x2 and more than x3 and more than or equal to xn +1 and more than or equal to 400nm, y1 is more than or equal to 300nm and more than y2 and more than y3 and more than y4 and more than yn +2 and more than yn +3 and more than or equal to 400nm, and n is an integer more than or equal to 3.
In application, based on the optical interference apparatus shown in fig. 1, the sequence of alternately lighting all the near-infrared light sources may be set according to actual needs, for example, when the near-infrared light sources with at least two wavelengths are controlled to be alternately lighted in the order from small to large or from large to small, a red stripe with gradually changed chromaticity may appear in a picture taken by the image pickup device. Based on the optical interference apparatus shown in fig. 2, the sequence of all the invisible light sources when being alternately lit can be set according to actual needs, for example, when all the near-infrared light sources are alternately lit first and then all the near-ultraviolet light sources are alternately lit, a red stripe and a purple stripe appear in a picture shot by the camera, and the red stripe is in front of the purple stripe, and the purple stripe is behind the purple stripe, otherwise, the purple stripe is in front of the red stripe, and the red stripe is behind the purple stripe; when all invisible light sources are alternatively lightened according to the sequence of lightening the near-infrared light source with one wavelength and then lightening the near-ultraviolet light source with one wavelength, red-purple alternate stripes can appear in a picture shot by the camera shooting equipment, and on the contrary, red-purple alternate stripes appear.
In application, all the invisible light sources are alternately lighted up once in a preset period, and the preset period should be set to be less than or equal to the single exposure time of the image pickup device, so that colored stripes with different chromaticities can appear in each frame of picture shot by the image pickup device. The shorter the preset period is, the higher the density of the colored stripes appearing in the picture is, i.e. the duration of the preset period is inversely proportional to the density of the colored stripes.
In one embodiment, the lighting time lengths of the invisible light sources of at least two wavelengths are the same or not completely the same within a preset period;
and/or the sum of the lighting time lengths of the invisible light sources with at least two wavelengths in one preset period is less than or equal to the preset period.
In application, the lighting time lengths of all the invisible light sources in a preset period can be set according to actual needs, as long as the sum of the lighting time lengths of all the invisible light sources is ensured to be less than or equal to the preset period. When the lighting time lengths of all invisible light sources are the same, the sizes of colored stripes appearing in the picture are the same; when the lighting time lengths of all the invisible light sources are not completely the same, the sizes of the colored stripes appearing in the picture are not completely the same, and the lighting time length of each invisible light source is in proportion to the size of the corresponding colored stripe. When the sum of the lighting time lengths of all the invisible light sources is smaller than the preset period, the picture also comprises a normal imaging area besides the colored stripes, and the time length difference between the preset period and the sum of the lighting time lengths of all the invisible light sources is in direct proportion to the size of the normal imaging area. When the sum of the lighting time lengths of all the invisible light sources is equal to the preset period, colored stripes appear in all the areas of the whole picture.
Based on the optical interference device shown in fig. 1, fig. 3 exemplarily shows a schematic diagram of red stripes (respectively labeled as 201, 202, …, and 20M) appearing in a picture captured by the image capturing apparatus when all the near-infrared light sources 21 to 2M are turned on at the same time, the sum of the turn-on durations of all the near-infrared light sources 21 to 2M is equal to a preset period, and the turn-on durations of all the near-infrared light sources are controlled to be alternately turned on according to a sequence of wavelengths from small to large; the abscissa represents time, the preset period is equal to T, the lighting time of each near-infrared light source is T, T is equal to mxt, and the near-infrared light sources 21 to 2M are sequentially lighted in time periods of 0 to T, T to 2T, …, and (M-1) T to T.
Based on the optical interference device shown in fig. 1, fig. 4 exemplarily shows a schematic diagram of red stripes (respectively labeled as 201, 202, …, and 20M) appearing in a picture captured by the image capturing apparatus when the lighting durations of all the near-infrared light sources 21 to 2M are different, the sum of the lighting durations of all the near-infrared light sources 21 to 2M is equal to a preset period, and the all the near-infrared light sources are controlled to be alternately lighted according to a sequence of wavelengths from small to large; wherein, the abscissa represents time, the preset period is exposure time is T, and the near infrared light sources 21-2M are sequentially 0-T1、t1～t2、…、tM-1～tMIs lighted up in a time interval, T ═ TM。
Based on the optical interference device shown in fig. 1, fig. 5 exemplarily shows a schematic diagram of red stripes (respectively labeled as 201, 202, …, and 20M) appearing in a picture photographed by a camera device when all the near-infrared light sources 21 to 2M are turned on at the same time, the sum of the turn-on durations of all the near-infrared light sources 21 to 2M is smaller than a preset period, and all the near-infrared light sources are controlled to be alternately turned on in a sequence of wavelengths from small to large; wherein, the abscissa represents time, the exposure time is T when the preset period is less than the preset period, and the near infrared light source 21-2M is sequentially 0-T1、t2～t3、…、tM1-1～tM1Is lighted up in a time interval, M1 is 2M-1, T > TM1。
In one embodiment, the at least two wavelengths of the invisible light source include a first near infrared light source and a second near infrared light source;
the lighting time of the first near-infrared light source is less than or equal to the lighting time of the second near-infrared light source;
and/or, within a preset period, the lighting time of the second near-infrared light source lags behind the extinguishing time of the first near-infrared light source (in this case, the sum of the lighting time of the first near-infrared light source and the lighting time of the second near-infrared light source is less than the preset period).
Based on the optical interference apparatus shown in fig. 1, fig. 6 is a schematic diagram exemplarily showing a comparison of pictures taken by front and rear image capturing apparatuses using the optical interference apparatus when the on time of the first near-infrared light source is equal to the on time of the second near-infrared light source and the on time of the second near-infrared light source lags behind the off time of the first near-infrared light source; the left image is a schematic view of a picture when the optical interference device is not used, the right image is a schematic view of a picture when the optical interference device is used, the red stripe corresponding to the first near-infrared light source is marked as 101, and the red stripe corresponding to the second near-infrared light source is marked as 102.
In one embodiment, each of said invisible light sources comprises at least one invisible light;
all the invisible light lamps are regularly arranged into a two-dimensional array or a three-dimensional array, and each invisible light lamp is adjacent to at least one other invisible light lamp.
In application, each invisible light source may include at least one invisible light lamp, and all the invisible light lamps are regularly arranged in a two-dimensional array or a three-dimensional array, so that the light interference device has a large light emitting area, and the invisible light can cover a lens of the image pickup apparatus as much as possible, thereby the light interference device has a good light interference effect. The two-dimensional array may specifically be a rectangular array, a circular array or any other regular polygonal array. The three-dimensional array can be a hemispherical array or a spherical array, and in order to reduce the number of the invisible light lamps and not influence the light emitting effect, the three-dimensional array is a hollow three-dimensional array, and only the invisible light lamps are arranged on the outermost layer of the array. Each invisible light lamp is adjacent to at least one other invisible light lamp, so that all kinds of invisible light sources are uniformly distributed, the invisible light of each wavelength emitted by the light interference device can uniformly cover the lens of the camera equipment, and colored stripes with different chromaticities and uniform distribution appear in the picture shot by the camera equipment.
In application, each invisible light source comprises all invisible light lamps which are connected in parallel and then connected with the driver, so that all invisible light lamps comprising each invisible light source can be simultaneously lightened or simultaneously lightened.
In one embodiment, the at least two wavelengths of the invisible light source include a first near infrared light source and a second near infrared light source;
the first near-infrared light source comprises at least one first near-infrared lamp, and the second near-infrared light source comprises at least one second near-infrared lamp;
all of the first near-infrared lamps and the second near-infrared lamps are regularly arranged in a two-dimensional array or a three-dimensional array, each of the first near-infrared lamps is adjacent to at least one of the second near-infrared lamps, and each of the second near-infrared lamps is adjacent to at least one of the first near-infrared lamps.
Based on the optical interference device shown in fig. 1, fig. 7 schematically shows a first light source structure of the optical interference device; wherein the plurality of first near-infrared lamps 11 and the plurality of second near-infrared lamps 12 are regularly arranged in a rectangular array, and the first near-infrared lamps 11 and the second near-infrared lamps 12 in the matrix array are alternately distributed in both the row direction and the column direction.
Based on the optical interference device shown in fig. 1, fig. 8 schematically illustrates a second light source structure of the optical interference device; wherein the plurality of first near-infrared lamps 11 and the plurality of second near-infrared lamps 12 are regularly arranged in a regular hexagonal array, and the first near-infrared lamps 11 and the second near-infrared lamps 12 in the matrix array are alternately distributed in both the row direction and the column direction.
In one embodiment, the at least two wavelengths of the invisible light source include a first near infrared light source, a second near infrared light source, and a near ultraviolet light source;
the first near-infrared light source comprises at least one first near-infrared lamp, the second near-infrared light source comprises at least one second near-infrared lamp, and the near-ultraviolet light source comprises at least one near-ultraviolet lamp;
all of said first near-infrared lamps, said second near-infrared lamps and said near-ultraviolet lamps are regularly arranged in a two-dimensional array or a three-dimensional array, each of said first near-infrared lamps being adjacent to at least one of said second near-infrared lamps and at least one of said near-ultraviolet lamps, each of said second near-infrared lamps being adjacent to at least one of said first near-infrared lamps and at least one of said near-ultraviolet lamps, each of said near-ultraviolet lamps being adjacent to at least one of said first near-infrared lamps and at least one of said second near-infrared lamps.
Based on the optical interference device shown in fig. 2, fig. 9 is a schematic diagram exemplarily showing a comparison of pictures taken by front and rear image capturing apparatuses using the optical interference device when the turn-on time of the first near-infrared light source, the turn-on time of the second near-infrared light source, and the turn-on time of the near-infrared light source are equal, the turn-on time of the near-ultraviolet light source lags behind the turn-off time of the first near-infrared light source, and the turn-on time of the second near-infrared light source lags behind the turn-off time of the near-ultraviolet light source; wherein, the left image is a schematic diagram of a picture when the optical interference device is not used, the right image is a schematic diagram of a picture when the optical interference device is used, the red stripe corresponding to the first near-infrared light source is marked as 101, the red stripe corresponding to the second near-infrared light source is marked as 102, and the purple stripe corresponding to the near-ultraviolet light source is marked as 103.
Based on the optical interference device shown in fig. 2, fig. 10 schematically shows a third light source structure of the optical interference device; wherein the plurality of first near-infrared lamps 11, the plurality of second near-infrared lamps 12 and the plurality of near-ultraviolet lamps 13 are regularly arranged in a rectangular array, and the first near-infrared lamps 11, the second near-infrared lamps 12 and the near-ultraviolet lamps 13 in the matrix array are alternately distributed in the row direction and the column direction.
In application, the driver outputs driving currents with preset frequency and sequentially lagging phase to each invisible light source in sequence to control each invisible light source to flicker, so that all the invisible light sources are lighted alternately, that is, the driving currents output to different visible light sources have the same frequency and have phase difference. By outputting driving currents with different duty ratios to different invisible light sources, the lighting time lengths of the different invisible light sources in a preset period can be different. The preset period is 1/preset frequency.
As shown in fig. 11, in an embodiment, the optical interference apparatus provided in the embodiment of the present application further includes a power interface 30 electrically connected to the driver 10;
the power interface 30 is used to supply power to the drive 10 when a power source is connected.
In an application, the power interface may include at least one of a mains power plug, a USB interface and a DC interface, and may also include other types of power interfaces. The mains supply power plug enables the optical interference device to be directly plugged into any mains supply power socket for electrifying and using; the USB interface enables the optical interference device to be connected with a charger, a personal computer, a notebook computer or a mobile phone with a reverse charging function so as to obtain electric energy; the DC interface enables the optical interference device to be connected to a mains power socket via a power adapter.
As shown in fig. 11, in an embodiment, the optical interference apparatus provided in the embodiment of the present application further includes a battery 40 electrically connected to the driver 10;
the battery 40 is used to directly power the drive 10.
In the application, the battery can be detachable battery, and when the battery power is not enough and the light interference device can not be supported to continue working, the battery can be detached and replaced.
In one embodiment, the battery is a rechargeable battery, and the driver is further configured to charge the rechargeable battery when the power interface is connected to a power source.
In application, the battery may also be a rechargeable battery, and when the battery is insufficient, the battery may be connected to a power source through the power interface to charge the rechargeable battery. The rechargeable battery may be provided as a removable or non-removable battery.
In one embodiment, the optical interference apparatus further comprises at least one visible light source electrically connected to the driver;
the driver is also used for controlling the at least one visible light source to be lightened when the power supply signal is switched on.
In an application, at least one visible light source, for example a white light source or any other colored light source, may also be provided in the light interference device. The light interference device can have other functions besides the function of preventing candid shooting, for example, when the visible light source is a white light source, the light interference device also has a lighting function and can be used as a lighting lamp or a flashlight; when the visible light source is an orange or yellow light source, the light interference device can also be used as an anti-collision warning lamp.
As shown in fig. 12, in an embodiment, the light interference device provided by the embodiment of the present application further includes a bottom cover 50 and a protection cover 60 covering the bottom cover 50;
a cavity is formed between the bottom cover 50 and the protective cover 60, and the driver 10 and all the near infrared light sources (20 in fig. 9) are disposed in the bottom cover 50 and located in the cavity.
In application, the shape of the bottom cover and the protective cover can be set according to actual needs, and should be as same as or similar to the arrangement structure of all the near infrared light sources as possible, so that the light interference device has the minimum volume. The protective cover can be made of any light-transmitting material such as glass, plastic and the like.
Fig. 12 is a schematic view schematically illustrating the structure of the light interference device when the bottom cover 50 is circular, all the near infrared light sources 20 are arranged and the protective cover 60 is hemispherical; wherein, the bottom of the bottom cover 50 is further provided with a mains supply plug 31.
As shown in fig. 13, in one embodiment, the optical interference apparatus provided by the embodiment of the present application further includes a switch 70 connected to the driver 10;
the switch 70 is used for triggering the driver 10 to control the at least two invisible light sources 21-2M to be alternately turned on in a preset period when the switch is turned on, and triggering the driver 10 to control the at least two invisible light sources 21-2M to be turned off when the switch is turned off.
In application, the switch can be a mechanical switch or a touch switch, and the mechanical switch can be a sliding switch, a toggle switch or a push switch and can be set according to actual needs. When the light interference device is provided with at least one visible light source, the switch can be specifically a three-gear switch, and the three gears are respectively used for triggering the driver to control all invisible light sources to be alternately lightened in a preset period, all invisible light sources to be extinguished, all visible light sources to be lightened and all visible light sources to be extinguished; the switch can be a four-gear switch, and the four gears are respectively used for triggering the driver to control all the near-infrared light sources to be alternately turned on in a preset period, all the invisible light sources to be turned off, all the visible light sources to be turned on and all the visible light sources to be turned off.
The embodiment of the application provides an optical interference device comprising a driver and at least two wavelengths of invisible light sources, so that the at least two wavelengths of invisible light sources comprise at least two wavelengths of near-infrared light sources, or at least two wavelengths of near-infrared light sources and at least one wavelength of near-ultraviolet light sources; the driver is respectively electrically connected with the invisible light sources with at least two wavelengths, the invisible light sources with at least two wavelengths are controlled to be alternately lightened in a preset period which is less than or equal to the single exposure time of the camera equipment so as to interfere the ambient light incident to the camera equipment, and at least two colored stripes with different chromaticities appear in the picture shot by the camera equipment under the condition of not being perceived by human bodies, so that the definition of the picture is reduced, the recovery difficulty of the picture is improved, and the aim of preventing the candid photograph is fulfilled; the light disrupting means also has the advantage of being less radiation-hazardous when the at least two wavelengths of non-visible light source comprise at least one near ultraviolet light source.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. An optical interference apparatus comprising a driver and a source of invisible light of at least three wavelengths;
the invisible light source with at least three wavelengths comprises a near infrared light source with at least two wavelengths and a near ultraviolet light source with at least one wavelength;
the driver is respectively electrically connected with the invisible light sources with at least three wavelengths and is used for controlling the invisible light sources with at least three wavelengths to be alternately lightened in a preset period so as to interfere the ambient light incident to the camera equipment;
the preset period is less than or equal to the single exposure time of the image pickup equipment; all the invisible light sources are lighted alternately in one time in the preset period.
2. The optical interference apparatus according to claim 1, wherein the illumination durations of the invisible light sources of at least three wavelengths in one of the preset periods are the same or not completely the same;
and/or the sum of the lighting time lengths of the invisible light sources with at least three wavelengths in one preset period is less than or equal to the preset period.
3. The optical interference device of claim 1 or 2, characterized in that said invisible light source of each wavelength comprises at least one invisible light lamp;
all the invisible light lamps are regularly arranged into a two-dimensional array or a three-dimensional array, and each invisible light lamp is adjacent to at least one other invisible light lamp.
4. The optical interference apparatus of claim 3 wherein the three-dimensional array is a hemispherical array or a spherical array.
5. The optical interference apparatus according to claim 1 or 2, further comprising a power interface and/or a battery electrically connected to the driver;
the power interface is used for supplying power to the driver when being connected with a power supply;
the battery is used to directly power the driver.
6. The optical perturbation device of claim 5 wherein the power interface comprises at least one of a mains power plug, a USB interface and a DC interface.
7. The optical perturbation device of claim 5 wherein the battery is a rechargeable battery and the driver is further configured to recharge the rechargeable battery when the power interface is connected to a power source.
8. The optical interference apparatus of claim 1 or 2, further comprising at least one visible light source electrically connected to said driver;
the driver is also used for controlling at least one visible light source to be lightened when a power supply signal is switched on.
9. The optical interference device according to claim 1 or 2, further comprising a bottom cover and a protection cover covering the bottom cover;
a cavity is formed between the bottom cover and the protective cover, and the driver and the invisible light source with at least three wavelengths are arranged on the bottom cover and located in the cavity.
10. The optical interference apparatus of claim 1 or 2, further comprising a switch connected to the driver;
the switch is used for triggering the driver to control the invisible light sources with at least three wavelengths to be alternately lightened in the preset period when the switch is turned on, and triggering the driver to control the invisible light sources with at least three wavelengths to be extinguished when the switch is turned off.
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CN204517959U (en) * 2015-02-05 2015-07-29 王瑞 Privacy protection device
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