CN207881923U - A kind of laser display system and its white balance detection device - Google Patents
A kind of laser display system and its white balance detection device Download PDFInfo
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- CN207881923U CN207881923U CN201820218363.6U CN201820218363U CN207881923U CN 207881923 U CN207881923 U CN 207881923U CN 201820218363 U CN201820218363 U CN 201820218363U CN 207881923 U CN207881923 U CN 207881923U
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Abstract
This application discloses a kind of white balance detection devices of laser display system, including the Fresnel fly's-eye lens and photosensitive sensor being sequentially arranged in light path；Wherein, Fresnel fly's-eye lens is used for incident light beam to be detected into line convergence and shimming；Photosensitive sensor is used to receiving and detecting the light beam to be detected after concentrated and shimming, and generates detection signal, to realize white balance detection according to the rgb value of detection signal acquisition light beam to be detected.The application efficiently realizes the convergence for treating detection light beam and shimming using Fresnel fly's-eye lens, avoid the use of light siphunculus etc. in the prior art, so as to effectively simplify the structure of white balance detection device, and white balance detection reduces the installation requirement of photosensitive sensor, in order to the installation and debugging of component, user experience is improved.Disclosed herein as well is a kind of laser display systems, equally have above-mentioned advantageous effect.
Description
Technical field
This application involves technical field of laser display, more particularly to a kind of laser display system and its white balance detection dress
It sets.
Background technology
In color science field, white is the light that is reflected into human eye in fact due to red (R), green (G), three kinds of blue (B)
Coloured light ratio is identical and is formed by vision response with certain brightness；White balance is exactly to describe R, G, B three primary colours in image
An index of the accuracy of white is generated after mixing.
In order to avoid image shows partially blue or partially red etc. photochromic under different colour temperature environment, laser display system is general
It is also required to adjust white balance by detecting.White balance structure of the detecting device in the prior art is generally complex, this be because
For it, in order to enable photosensitive sensor be accurately received R, G, B component after abundant mixed light, uniformly light to be detected is provided with
Light convergent component and shimming element.And the shimming element that it is used, such as common light siphunculus or optical tunnel etc., not only cost compared with
Height, and inconvenient installation and debugging, high requirement is proposed to the space layout of laser display system internal component.
It can be seen that white balance detection device that is simple in structure using which kind of, being easily installed debugging, is people in the art
The important technological problems solved required for member.
Utility model content
The application's is designed to provide a kind of laser display system simple in structure and its white balance detection device, so as to
In installation and debugging.
In order to solve the above technical problems, the application provides a kind of white balance detection device of laser display system, including according to
Secondary Fresnel fly's-eye lens and photosensitive sensor in light path；Wherein,
The Fresnel fly's-eye lens is used for incident light beam to be detected into line convergence and shimming；
The photosensitive sensor is used to receiving and detecting the light beam to be detected after concentrated and shimming, and generates detection
Signal, to realize white balance detection according to the rgb value of light beam to be detected described in the detection signal acquisition.
Optionally, the number of the Fresnel fly's-eye lens and the photosensitive sensor is one；The photosensitive sensor
For color sensor.
Optionally, the white balance detection device includes three Fresnel fly's-eye lenses and three light sensors
Device；Further include feux rouges filter plate, green light filter plate, blue light filter plate and three optical glass sheets；Wherein,
First optical glass sheet is filtered for the light beam to be detected to be reflexed to the feux rouges filter plate, with
Just retain feux rouges；The feux rouges after the first Fresnel fly's-eye lens is concentrated and shimming by entering first light sensor
Device, to generate first detection signal；
Second optical glass sheet is filtered for the light beam to be detected to be reflexed to the green light filter plate, with
Just retain green light；The green light after the second Fresnel fly's-eye lens is concentrated and shimming by entering second light sensor
Device, to generate the second detection signal；
The third optical glass sheet is filtered for the light beam to be detected to be reflexed to the blue light filter plate, with
Just retain blue light；The blue light after the third Fresnel fly's-eye lens is concentrated and shimming by entering the third light sensor
Device detects signal to generate third.
Optionally, first photosensitive sensor, second photosensitive sensor and the third photosensitive sensor are
Photodiode.
Optionally, further include the spectroscope in the display light path of the laser display system；The spectroscope is used for
Light beam in the display light path is reflexed into first optical glass sheet, second optics as the light beam to be detected
Sheet glass and the third optical glass sheet.
Optionally, spectroscopical minute surface is coated with anti-reflection film.
Optionally, first optical glass sheet, second optical glass sheet and the third optical glass sheet be successively
In the main optical path of the light beam to be detected；The transmitted light of first optical glass sheet is incident to second optical glass
The transmitted light of piece, second optical glass sheet is incident to the third optical glass sheet.
Optionally, the spectroscope shows that light path is in the position relationship of 45° angle with described；First optical glass sheet,
Second optical glass sheet and the third optical glass sheet are in the position of 45° angle with the main optical path of the light beam to be detected
Relationship.
Present invention also provides a kind of laser display systems, including the white of any laser display system as described above is put down
Weigh detection device.
The white balance detection device of laser display system provided herein includes the Fresnel being sequentially arranged in light path
Fly's-eye lens and photosensitive sensor；Wherein, the Fresnel fly's-eye lens be used for incident light beam to be detected into line convergence and
Shimming；The photosensitive sensor is used to receiving and detecting the light beam to be detected after concentrated and shimming, and generates detection letter
Number, to realize white balance detection according to the rgb value of light beam to be detected described in the detection signal acquisition.
As it can be seen that compared with the prior art, in the white balance detection device of laser display system provided herein, utilizing
Fresnel fly's-eye lens efficiently realizes the convergence for treating detection light beam and shimming, avoids making for light siphunculus etc. in the prior art
With so as to effectively simplify the structure of white balance detection device, and white balance detection being made to photosensitive sensor
Installation requirement reduces, and in order to the installation and debugging of component, improves user experience.Laser display system provided herein
Including above-mentioned white balance detection device, equally there is above-mentioned advantageous effect.
Description of the drawings
In order to illustrate more clearly of the technical solution in the prior art and the embodiment of the present application, below will to the prior art and
Attached drawing to be used is needed to make brief introduction in the embodiment of the present application description.Certainly, the attached drawing in relation to the embodiment of the present application below
A part of the embodiment in only the application of description is not paying creativeness to those skilled in the art
Under the premise of labour, other attached drawings can also be obtained according to the attached drawing of offer, the other accompanying drawings obtained also belong to the application
Protection domain.
A kind of structure diagram of the white balance detection device for laser display system that Fig. 1 is provided by the embodiment of the present application；
A kind of index path of the white balance detection device for laser display system that Fig. 2 is provided by the embodiment of the present application；
The index path of the white balance detection device for another laser display system that Fig. 3 is provided by the embodiment of the present application.
Specific implementation mode
The core of the application is to provide a kind of laser display system simple in structure and its white balance detection device, so as to
In installation and debugging.
In order to which technical solutions in the embodiments of the present application is more clearly and completely described, below in conjunction with this Shen
Attached drawing that please be in embodiment, technical solutions in the embodiments of the present application are introduced.Obviously, described embodiment is only
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Referring to FIG. 1, a kind of white balance detection device for laser display system that Fig. 1 is provided by the embodiment of the present application
Structure diagram, main includes the Fresnel fly's-eye lens 1 and photosensitive sensor 2 being sequentially arranged in light path；Wherein,
Fresnel fly's-eye lens 1 is used for incident light beam to be detected into line convergence and shimming；
Photosensitive sensor 2 is used to receiving and detecting the light beam to be detected after concentrated and shimming, and generates detection signal, with
Just it is detected according to the RGB Numerical Implementation white balances of detection signal acquisition light beam to be detected.
Laser display is typically that will be shown after tricolor laser mixed light using red, green, blue tricolor laser as light source
's.The light mixng proportion of three primary colours light is different, and saturation degree, colour temperature of obtained picture etc. are also different, therefore, it is quite necessary to right
Three primary colours light is detected respectively, to adjust light source according to three primary colours light testing result, improves image quality, which is
It is detected for described white balance.
Optical element used in white balance detection device provided herein is Fresnel fly's-eye lens, utilizes phenanthrene
Nie Er fly's-eye lenses can also carry out even light while carrying out light convergence, to ensure in 2 detection range of photosensitive sensor
Detection light be all uniform.The accuracy and reliability of detected rgb value on the one hand can be ensured as a result,；Another party
Face but also photosensitive sensor 2 installation site can in detection range unrestricted choice, greatly facilitate the installation of device
With debugging.
Specifically, Fresnel fly's-eye lens is a kind of compound lens that two sides optical characteristics is inconsistent, and one side is luxuriant and rich with fragrance alunite
That lens, are equivalent to an efficient convergent lens；And another side is fly's-eye lens.
The minute surface imprinting of Fresnel Lenses ascending concentric circles one by one, and taken away optics material as much as possible
Material, and the curvature of retention surface, thus the thickness of minute surface is relatively thin compared to common convex lens, but act on identical.Its line
Reason is designed according to the interference of light, relative sensitivity and receiving angle requirement.When using common convex lens, it may appear that
Dimmed, the fuzzy phenomenon in corner, this is because the refraction of light only occurs in the interface of medium, convex lens sheet is thicker, and light is in glass
The part that glass cathetus is propagated can make light attenuation.Fresnel Lenses eliminates the part of straightline propagation, only retains and rolls over
The curved surface penetrated also reaches identical spotlight effect while saving lot of materials.And fly's-eye lens is by a series of lenslets
Combine the double lens array formed.The uniform treatment to light beam may be implemented using double fly eye lens array.
Therefore, Fresnel fly's-eye lens can be realized to light beam using Fresnel Lenses face into while line convergence, be gone back
Dodging can be carried out using fly's-eye lens face, can effectively simplify the structure of white balance detection device, consequently facilitating installation
And debugging.
As it can be seen that in the white balance detection device for the laser display system that the embodiment of the present application is provided, it is multiple using Fresnel
Eyelens 1 efficiently realizes the convergence for treating detection light beam and shimming, so as to effectively simplify white balance detection device
Structure so that white balance, which detects, reduces the installation requirement of photosensitive sensor 2, in order to the installation and debugging of component, improves
User experience.
The white balance detection device of laser display system provided herein, on the basis of the above embodiments：
Referring to FIG. 2, a kind of white balance detection device for laser display system that Fig. 2 is provided by the embodiment of the present application
Index path；As a kind of preferred embodiment, the number of Fresnel fly's-eye lens 1 and photosensitive sensor 2 is one；Light sensor
Device 2 is color sensor.
Specifically, it as shown in Fig. 2, light beam to be detected is assembled by Fresnel fly's-eye lens 1 with after shimming, is evenly distributed on
In one limited detectable region.Within the scope of detectable region, there are one color sensors as photosensitive sensor for setting
2。
Color sensor, also known as color sensor, it has been internally integrated RGB detection modules, can be with detection and analysis target
The RGB signal component values and intensity of reflected light accurately control the color of finished product to verify correct component and assembling, answered extensively
For producing detection field.In the application, color sensor can be utilized to obtain the rgb value of light to be detected, to realize white balance
Detection.As it can be seen that the structure very simple of white balance detection device shown in Fig. 2.Further, since saturating through Fresnel fly's-eye lens 1
Light after penetrating is by effective shimming, so color sensor is within the scope of detectable region received by any position
Light is substantially the same, therefore color sensor can detect any position in range and install at this, that is, reduces pair
The installation requirement of photosensitive sensor 2 so that the installation and debugging of white balance detection device are easier.
Referring to FIG. 3, the white balance detection device for another laser display system that Fig. 3 is provided by the embodiment of the present application
Index path；As a kind of preferred embodiment, white balance detection device includes three Fresnel fly's-eye lenses and three photosensitive biographies
Sensor；Further include feux rouges filter plate 4, green light filter plate 5, blue light filter plate 6 and three optical glass sheets；Wherein,
First optical glass sheet 31 is filtered for light beam to be detected to be reflexed to feux rouges filter plate 4, red to retain
Light；Feux rouges after the first Fresnel fly's-eye lens 11 is concentrated and shimming by entering the first photosensitive sensor 21, to generate first
Detect signal；
Second optical glass sheet 32 is filtered for light beam to be detected to be reflexed to green light filter plate 5, green to retain
Light；Green light after the second Fresnel fly's-eye lens 12 is concentrated and shimming by entering the second photosensitive sensor 22, to generate second
Detect signal；
Third optical glass sheet 33 is filtered for light beam to be detected to be reflexed to blue light filter plate 6, to retain indigo plant
Light；Blue light after third Fresnel fly's-eye lens 13 is concentrated and shimming by entering third photosensitive sensor 23, to generate third
Detect signal.
As shown in figure 3, the white balance detection device that the embodiment of the present application is provided is respectively constituted by different components
Feux rouges detection module, green light detection module and blue light detection module, to be detected respectively to feux rouges, green light and blue light.
Due to needing to be detected respectively to three primary colours light, each detection module is required for rational light path design,
So as not to influence the normal detection of other two detection module.Specifically, in white balance detection device as shown in Figure 3, with
For feux rouges detection module, it includes the first optical glass sheet 31 successively along light path, the first Fresnel fly's-eye lens 11, red
Light filter plate 4 and the first photosensitive sensor 21.First optical glass sheet 31 by light reflection to be detected to feux rouges filter plate 4, by red
Light filter plate 4 filters the light of its all band, only feux rouges is allowed to penetrate.After filtered, only feux rouges is retained, and first
The feux rouges of reservation is converged to the first photosensitive sensor 21 by Fresnel fly's-eye lens 11 again, generates the first detection signal of feux rouges.
The light path design principle of green light detection module and blue light detection module is similar with feux rouges detection module, here just not
It repeats again.
It should be noted that in order to avoid the mutual influence of detection module, each detection module is in light to be detected
Main optical path on be provided with an optical glass sheet, to carry out the detection of this module using the reflected light of the optical glass sheet,
And the transmitted light of the optical glass sheet can continue the detection module by rear for detecting.
As a kind of preferred embodiment, the first photosensitive sensor 21, the second photosensitive sensor 22 and third photosensitive sensor
23 be photodiode.
Specifically, after have passed through being filtered of corresponding filter plate, each photosensitive sensor 2 can be selected as to this here
Common photodiode is with cost-effective in field.
Further include the spectroscope 7 in the display light path of laser display system as a kind of preferred embodiment；Spectroscope
7 for will show that the light beam in light path reflexes to the first optical glass sheet 31, the second optical glass sheet 32 as light beam to be detected
With third optical glass sheet 33.
Usually, in laser display system, in order to which extension shows that light is detected as light to be detected for white balance,
Spectroscope 7 can be arranged into the display light path of laser display system, so as to using the reflected light of spectroscope 7 as to be detected
Light.
As a kind of preferred embodiment, the minute surface of spectroscope 7 is coated with anti-reflection film.
Specifically, loss can be inevitably generated when through spectroscope 7 due to light, the embodiment of the present application
The white balance detection device provided can plate anti-reflection film in 7 minute surface of spectroscope, to ensure loss caused by spectroscope 7
It minimizes so that influence of the loss to system output power also minimizes.
As a kind of preferred embodiment, the first optical glass sheet 31, the second optical glass sheet 32 and third optical glass sheet
33 are sequentially arranged in the main optical path of light beam to be detected；The transmitted light of first optical glass sheet 31 is incident to the second optical glass sheet
32, the transmitted light of the second optical glass sheet 32 is incident to third optical glass sheet 33.
It specifically, as shown in figure 3, can installation settings in an orderly manner between three detection modules.White balance shown in Fig. 3
In detection device, along the main optical path of light to be detected, the first optical glass sheet 31,32 and of the second optical glass sheet have been set gradually
Third optical glass sheet 33.Since the incident light of the optical glass sheet positioned at light path rear is its front adjacent optical sheet glass
Transmitted light, and optical glass sheet itself is that have certain reflectivity and refractive index, therefore, the arrangement position of each optical glass sheet
The gross energy for the light for entering each filter plate will be influenced by setting.Therefore, those skilled in the art should be according to modules
The installation site of optical glass sheet, synthesis consider each detection signal.Certainly, the application is to each optical glass sheet
Sequence of positions is not defined, and those skilled in the art can be voluntarily arranged according to practical situations.
As a kind of preferred embodiment, spectroscope 7 and the position relationship that display light path is in 45° angle；First optical glass sheet
31, the second optical glass sheet 32 and third optical glass sheet 33 are in the position relationship of 45° angle with the main optical path of light beam to be detected.
Specifically, in index path as shown in Figure 3, spectroscope 7 is arranged in the angle position for pressing from both sides 45° angle with display light path
It sets so that the reflected light of spectroscope 7 is emitted along perpendicular to the direction of display light path.Thus correspondingly, it is located at 7 reflected light of spectroscope
Each optical glass sheet in light path can also be arranged in the angle position for pressing from both sides 45° angle with the main optical path of light to be detected so that each
The reflected light of a optical glass sheet is along the direction outgoing for being parallel to display light path, in order to the optical device in each detection module
Installation.
Certainly, those skilled in the art can also be according to the practical application scene voluntarily devices such as adjusted design spectroscope 7
Setting angle and position, this embodiment of the present application is not limited thereto.
Present invention also provides a kind of laser display systems, including the laser display system that any embodiment as above is introduced
White balance detection device.
The specific implementation mode of laser display system provided herein and laser display system as described above
White balance detection device can correspond reference, just repeat no more here.
Each embodiment is described by the way of progressive in the application, the highlights of each of the examples are with other realities
Apply the difference of example, just to refer each other for identical similar portion between each embodiment.For system disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is referring to method part illustration
.
It should be noted that in present specification, the relational terms of such as " first " and " second " etc are used merely to
One entity is either operated and is distinguished with another entity or operation, without necessarily requiring or implying these entities or
There are any actual relationship or orders between person's operation.In addition, the terms "include", "comprise" or its any other
Variant is intended to non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only
Including those elements, but also include other elements that are not explicitly listed, or further includes for this process, method, object
Product or the intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...",
It is not precluded in the process, method, article or apparatus that includes the element that there is also other identical elements.
Technical solution provided herein is described in detail above.Specific case used herein is to this Shen
Principle and embodiment please is expounded, and the explanation of above example is only intended to help to understand that its core of the application is thought
Think.It should be pointed out that for those skilled in the art, under the premise of not departing from the application principle, may be used also
With to the application, some improvement and modification can also be carried out, these improvement and modification are also fallen into the application scope of the claims.
Claims (9)
1. a kind of white balance detection device of laser display system, which is characterized in that including the Fresnel being sequentially arranged in light path
Fly's-eye lens and photosensitive sensor；Wherein,
The Fresnel fly's-eye lens is used for incident light beam to be detected into line convergence and shimming；
The photosensitive sensor is used to receiving and detecting the light beam to be detected after concentrated and shimming, and generates detection letter
Number, to realize white balance detection according to the rgb value of light beam to be detected described in the detection signal acquisition.
2. white balance detection device according to claim 1, which is characterized in that the Fresnel fly's-eye lens and the light
The number of dependent sensor is one；The photosensitive sensor is color sensor.
3. white balance detection device according to claim 1, which is characterized in that the white balance detection device includes three
The Fresnel fly's-eye lens and three photosensitive sensors；Further include feux rouges filter plate, green light filter plate, blue light filter plate
And three optical glass sheets；Wherein,
First optical glass sheet is filtered for the light beam to be detected to be reflexed to the feux rouges filter plate, to protect
Stay feux rouges；The feux rouges by entering first photosensitive sensor after the first Fresnel fly's-eye lens is concentrated and shimming,
To generate first detection signal；
Second optical glass sheet is filtered for the light beam to be detected to be reflexed to the green light filter plate, to protect
Stay green light；The green light by entering second photosensitive sensor after the second Fresnel fly's-eye lens is concentrated and shimming,
To generate the second detection signal；
The third optical glass sheet is filtered for the light beam to be detected to be reflexed to the blue light filter plate, to protect
Stay blue light；The blue light by entering the third photosensitive sensor after the third Fresnel fly's-eye lens is concentrated and shimming,
Signal is detected to generate third.
4. white balance detection device according to claim 3, which is characterized in that first photosensitive sensor, described
Two photosensitive sensors and the third photosensitive sensor are photodiode.
5. white balance detection device according to claim 3, which is characterized in that further include being set to the laser display system
Display light path in spectroscope；The spectroscope is used for the light beam in the display light path is anti-as the light beam to be detected
It is incident upon first optical glass sheet, second optical glass sheet and the third optical glass sheet.
6. white balance detection device according to claim 5, which is characterized in that spectroscopical minute surface is coated with anti-reflection
Film.
7. white balance detection device according to claim 5, which is characterized in that first optical glass sheet, described
Two optical glass sheets and the third optical glass sheet are sequentially arranged in the main optical path of the light beam to be detected；First optics
The transmitted light of sheet glass is incident to second optical glass sheet, and the transmitted light of second optical glass sheet is incident to described
Three optical glass sheets.
8. white balance detection device according to claim 7, which is characterized in that the spectroscope is in the display light path
The position relationship of 45° angle；First optical glass sheet, second optical glass sheet and the third optical glass sheet with
The main optical path of the light beam to be detected is in the position relationship of 45° angle.
9. a kind of laser display system, which is characterized in that including such as claim 1 to 8 any one of them laser display system
White balance detection device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108254159A (en) * | 2018-02-07 | 2018-07-06 | 北京镭创高科光电科技有限公司 | A kind of white balance detection device of laser display system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108254159A (en) * | 2018-02-07 | 2018-07-06 | 北京镭创高科光电科技有限公司 | A kind of white balance detection device of laser display system |
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Address after: Room 401, room 402, building 1, Zone C, industrial square, science and Technology City, 588 Wutaishan Road, high tech Zone, Suzhou City, Jiangsu Province, 215000 Patentee after: Jiangsu radium Technology Co.,Ltd. Address before: 100176 Room 301, 3rd floor, building 28, yard 18, Kechuang 13th Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee before: BEIJING LITRONICS OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |