CN109856894A - The aobvious LED movies-making lamp of height and its color temperature adjusting method - Google Patents
The aobvious LED movies-making lamp of height and its color temperature adjusting method Download PDFInfo
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- CN109856894A CN109856894A CN201910267242.XA CN201910267242A CN109856894A CN 109856894 A CN109856894 A CN 109856894A CN 201910267242 A CN201910267242 A CN 201910267242A CN 109856894 A CN109856894 A CN 109856894A
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- 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
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- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The invention discloses a kind of high aobvious LED movies-making lamp and its color temperature adjusting methods, belong to video display lamp technical field, specifically include setting reference color temperature value；It is blended into the light of five kinds of white, red, green, blue, amber colors；When acquisition color temperature value minimum and when color temperature value maximum, the value of the color range degree of five kinds of light in light mixing；And the linear relation of colour temperature and color range degree is obtained according to linear interpolation method；Any colour temperature is finally selected, and obtains according to linear relation the theoretical value of the color range degree of white light under the colour temperature；The luminous color range angle value of LED lamp bead is adjusted to theoretical value, obtains light mixing；It realizes smooth light modulation of the colour temperature in setting range value, and accomplishes that colour rendering index is greater than 90%；Movies-making is fully met, aobvious refer to of the height of relay requires.
Description
Technical field
The present invention relates to video display lamp technical field, specially a kind of high aobvious LED movies-making lamp and its color temperature adjusting method.
Background technique
Traditional high-power movies-making lamp is mostly with ceramic gold-halogen lamp, based on tungsten halogen lamp, fixed colour temperature 3200k or
5600k is non-adjustable, and part dual source lighting fixture can switch in 3200k room light and 5600k daylight；Occur in industry in the past 10 years
LED movies-making lamps and lanterns, but be all fixed colour temperature 3200k or 5600k or single color, or in two kinds of colors of 3200k, 5600k
Switch or adjust step by step colour temperature between temperature, essence still using two kinds of white light sources of 3200k and 5600k and is dimmed, nothing
The variation and wider array of colour temperature of method realization color.
Summary of the invention
Shortcoming present in view of the above technology, the height that the present invention provides a kind of ultra-wide colour temperature section show LED video display and clap
Lamp is taken the photograph, using a variety of LED lamp beads, on the basis of white light, by being mixed into other coloured light, by software algorithm, Serial regulation is every
The mixed proportion of a coloured light and white brightness realizes colour temperature from the smooth light modulation between 2200-15000k.
To achieve the above object, the present invention provides a kind of color temperature adjusting method of high aobvious LED movies-making lamp, including
Set reference color temperature value；
It is mixed into the light of five kinds of white, red, green, blue, amber colors；When acquisition color temperature value minimum and when color temperature value maximum, light mixing
In five kinds of light color range degree value；And the linear relation of colour temperature and color range degree is obtained according to linear interpolation method；
Any colour temperature is selected, and obtains according to linear relation the theoretical value of the color range degree of white light under the colour temperature；It adjusts
The luminous color range angle value of LED lamp bead obtains light mixing to theoretical value.
Wherein, also need to obtain the luminous intensity parameter area of five kinds of LED light before the light for being mixed into five kinds of colors.
Wherein, when acquisition color temperature value minimum and when color temperature value maximum, in light mixing when the value of the color range degree of five kinds of light, with white light
For basic color, then the intensity of four kinds of red, green, blue, amber color of light is adjusted separately, so that colour temperature reaches minimum value or maximum
Value.
Wherein, when colour temperature reaches minimum value or maximum value, the color of light mixing shows index and is greater than 90%.
Wherein, adjust red, green, blue, four kinds of color of light of amber intensity when, if colour temperature be higher than target colour temperature, increase indigo plant
Or the intensity of amber light；Either reduce red or green intensity.
Wherein, adjust red, green, blue, four kinds of color of light of amber intensity when, if colour temperature be lower than target colour temperature, reduce indigo plant
Or the intensity of amber light；Either increase red or green intensity.
Wherein, it obtains respectively after lowest color temperature value CT1 and highest color temperature value CT2, five kinds of white, red, green, blue, amber face
The first data group and the second data group of the color range degree composition of the light of color；Wherein the first data group are as follows: (W1, R1, G1, B1, A1),
Second data are as follows: (W2, R2, G2, B2, A2).
Wherein, when obtaining the linear relation of colour temperature and color range degree according to linear interpolation method, coefficient sets are first obtained:
When obtaining any color temperature CT3 again, white,
Red, green, blue, five kinds of colors of amber light color range angle value composition third data group are as follows:
(W3,R3,G3,B3,A3)；Wherein,
Wherein, when adjusting color range angle value to the theoretical value that LED lamp bead shines, the light pearl of five kinds of colors is passed through by adjusting
Power adjusts LED lamp bead luminous intensity, changes the theoretical value of the color range degree of every kind of lamp bead.
To achieve the goals above, the present invention also provides a kind of high aobvious LED movies-making lamps for described in perform claim
Color temperature adjusting method.
The beneficial effects of the present invention are: the present invention includes first setting reference color temperature value；It is blended into white, red, green, blue, amber
The light of five kinds of colors；When acquisition color temperature value minimum and when color temperature value maximum, the value of the color range degree of five kinds of light in light mixing；And according to line
Property interpolation method obtains the linear relation of colour temperature and color range degree；Any colour temperature is selected, and the colour temperature is obtained according to linear relation
The theoretical value of the color range degree of lower white light；The luminous color range angle value of LED lamp bead is adjusted to theoretical value, obtains light mixing；Realize colour temperature
Smooth light modulation in setting range value, and accomplish that colour rendering index is greater than 90%；Movies-making is fully met, the height of relay is aobvious to be referred to
It is required that.
Detailed description of the invention
Fig. 1 is overall flow figure of the invention；
Fig. 2 is interpolation method flow chart of the invention.
Specific embodiment
In order to more clearly state the present invention, the present invention is further described with reference to the accompanying drawing.
Referring to Fig. 1, a kind of color temperature adjusting method of high aobvious LED movies-making lamp, first setting reference color temperature value；It mixes again
Enter the light of five kinds of white, red, green, blue, amber colors；When obtaining color temperature value minimum and when color temperature value maximum, five kinds of light in light mixing
The value of color range degree；And the linear relation of colour temperature and color range degree is obtained according to linear interpolation method；Finally select any colour temperature, and root
The theoretical value of the color range degree of white light under the colour temperature is obtained according to linear relation；Adjust the luminous color range angle value famous dictum of LED lamp bead
By value, light mixing is obtained.
In the present embodiment, also need to obtain the luminous intensity parameter of five kinds of LED light before the light for being mixed into five kinds of colors
Range；It is specifically that the parameter of the LED light of acquisition is the color range value of LED light brightness；The color range value of the brightness of five kinds of lamp beads is
0—255；Wherein, the color of each color lamp bead can choose before selection LED light light modulation according to the range requirement of colour temperature
Rank value LED lamp bead in certain a certain range, wherein the meaning of color range degree is the ratio of current color range value and maximum color range value 255,
Multiplied by 100% value arrived.
In the prior art, red, green, blue is the three primary colors of light；Three kinds of light proportionally mix available any face
The light of color；For example, it is desired to which the color range value of red light is 255 when pure red smooth, the color range value army of green light and blue light is 0；
When needing white light, the red, green, blue that color range value is 255 is mixed；When needing black, three kinds of red, green, blue
The color range value of light is all 0；Red, green, blue, white, amber in the present embodiment are issued by the LED lamp bead of respective light source respectively, wherein
5 kinds of color lamp beads be actually sent out light and theoretical value it is mixed go out light between there are colo(u)r bias；If this is resulted in directly according to theory
Value goes to mix colours, and subsequent color can be made to generate deviation；So various colors when needing to measure maximum colour temperature and minimum colour temperature
Practical color range value, guarantee subsequent adjustment colour temperature when accuracy.
In the present embodiment, when obtaining color temperature value minimum and when color temperature value maximum, the color range degree of five kinds of light in light mixing
It is basic color with white light, then adjust separately the intensity of four kinds of red, green, blue, amber color of light when value, so that colour temperature reaches minimum
Value or maximum value；In the present embodiment, white light is basic color, and RGB on basic color for adjusting colour temperature, amber use
In complementary color；Wherein, when colour temperature reaches minimum value or maximum value, the color of light mixing shows index and is greater than 90%；In adjustment process, adjust
Whole red, green, blue, four kinds of color of light of amber intensity when, if colour temperature is higher than target colour temperature, increase blue or amber light strong
Degree；Either reduce red or green intensity；If colour temperature is lower than target colour temperature, reduce blue or amber light strong
Degree；Either increase red or green intensity；When adjusting the light intensity of four kinds of colors；In adjustment, guarantee color temperature value not
Become, change the intensity of four kinds of red, green, blue, amber color of light one by one, until color shows index and is greater than 90%.
It is greater than under conditions of 90% referring to Fig. 2, obtaining color respectively and showing index, lowest color temperature value CT1 and highest color temperature value
When CT2, white, red, green, blue, five kinds of colors of amber light color range degree composition the first data group and the second data group；Wherein
One data group are as follows: (W1, R1, G1, B1, A1), the second data are as follows: (W2, R2, G2, B2, A2)；Color is obtained according to linear interpolation method
When the linear relation of mild color range degree, coefficient sets are first obtained:
When obtaining any color temperature CT3 again, white, red, green, blue, five kinds of colors of amber light color range angle value composition third data group
Are as follows:
(W3,R3,G3,B3,A3)；Wherein,
Finally, adjusting the luminous color range angle value of LED lamp bead to theoretical value, specifically, passing through five kinds of colors by adjusting
The power of light pearl adjusts LED lamp bead luminous intensity, changes the value of the color range degree of every kind of lamp bead.
In the present embodiment, the range of colour temperature is 2200k -15000K；When colour temperature 2200K, the light mixing of video display lamp is just as morning
On the light of the sun that has just risen, after colour temperature is higher than 6500K, light mixing is partially blue, just as the light scene in the world of ice and snow；White
On the basis of the aobvious finger Ra80 of light, by being mixed into other coloured light, the mixed proportion of Serial regulation each coloured light and white brightness is realized
Colour temperature is average from realizing between the smooth light modulation between 2200-15000k, special the most frequently used shooting colour temperature section of 3200k-5600k
Aobvious to refer to Ra95 or more, part colour temperature reaches Ra97.
In the present embodiment, five kinds of white, amber, red, green and blue lamp beads are the lamp bead of the XBD model of CREE brand；Its
In, white light lamp bead is warm white, and colour temperature 3000K, for display index greater than 80, the value range of lumen is 67.2-107lm；It is amber
The emission wavelength of lamp bead is 593.6nm -596nm, and lumen range value is 56.8-73.9lm；The emission wavelength of red lamp bead is
620nm -630nm, lumen range value are 51.7-73.9lm；The emission wavelength of green lamp bead is 520nm -535nm, lumen model
Enclosing value is 87.4-114lm；The emission wavelength of blue lamp bead is 465nm -485nm, lumen 30.6-39.8lm；It is wherein entire
In video display lamp, the quantity of white lamp bead is 72, and amber lamp bead quantity is 6, and red lamp bead quantity is 12, green lamp bead
It is 24, blue lamp bead quantity is 18；Specifically,
In the present embodiment, when colour temperature is 2200K, the first data group is (56.8%, 100%, 0,0,100%), and aobvious
Show that index is Ra96；When colour temperature is 15000K, the second data group is (33.3%, 0,100%, 96.1%, 0) and display index is
Ra90；Existing video display lamp usually shows that index is R82-R87；Light source is known as colour rendering to the coloration ability of object, is to pass through
Compared with object appearance color under the reference of same colour temperature or reference light source, wherein reference light source refers to incandescent lamp or draws light；Such as
Fruit will correctly show the light source that the original color of substance need to use colour rendering index (Ra) high, and numerical value is close to 100, and colour rendering is most
It is good；The light mixing obtained using this interpolation algorithm smooth adjustment colour temperature shows index close to Ra100, and color developing effect is substantially better than existing
Technology.
In the present embodiment, coefficient sets:
W3=56.8*10^-2-1.84*10^-5* (CT3-2200)；
R3=100*10^-2-7.8*10^-5* (CT3-2200)；
G3=0*10^-2+7.8*10^-5* (CT3-2200)；
B3=0*10^-2+7.5*10^-5* (CT3-2200)；
A3=100*10^-2-7.8*10^-5* (CT3-2200)；
The value for taking CT3 is 5200K, obtains W3=51.28%, R3=76.6%, G3=23.4%；B3=22.5%；A3
=76.6%；The product of W3 and 255 is white light theory color range value, similarly the color range value of other available lamp beads in 4；Control
The color range value of each lamp bead obtains the light mixing of 5200K colour temperature, and shows that index is Ra93.
In the present embodiment, a kind of high aobvious LED movies-making lamp is also provided, for executing above-mentioned color temperature adjusting method；
Realize the light output of full-color and high aobvious finger；And for example exploded using independent development circuit and software realization, flame, lightning,
Warning lamp, contextual model built in party etc. may be implemented three in conjunction with the key control panel and wireless and wire remote control devices on lamps and lanterns
Kind lamps and lanterns control mode；By DMX512 agreement, it can realize that more lamps are synchronous and deploy to ensure effective monitoring and control of illegal activities with external console.
Present invention has an advantage that
1, reference color temperature value is first set；It is blended into the light of five kinds of white, red, green, blue, amber colors；It is minimum to obtain color temperature value
When and when color temperature value maximum, the value of the color range degree of five kinds of light in light mixing；And colour temperature and color range degree are obtained according to linear interpolation method
Linear relation；Any colour temperature is selected, and obtains according to linear relation the theoretical value of the color range degree of white light under the colour temperature；It adjusts
The luminous color range angle value of LED lamp bead is saved to theoretical value, obtains light mixing；Realize smooth light modulation of the colour temperature in setting range value；
2, when dimming, white light is basic color, and RGB is amber to be used for complementary color for adjusting colour temperature on basic color；Its
In, when colour temperature reaches minimum value or maximum value, the color of light mixing shows index and is greater than 90%；Movies-making is fully met, relay
Aobvious refer to of height requires.
Disclosed above is only several specific embodiments of the invention, but the present invention is not limited to this, any ability
What the technical staff in domain can think variation should all fall into protection scope of the present invention.
Claims (10)
1. a kind of color temperature adjusting method of high aobvious LED movies-making lamp, which is characterized in that including
Set reference color temperature value；
It is mixed into the light of five kinds of white, red, green, blue, amber colors；When acquisition color temperature value minimum and when color temperature value maximum, five in light mixing
The value of the color range degree of kind light；And the linear relation of colour temperature and color range degree is obtained according to linear interpolation method；
Any colour temperature is selected, and obtains according to linear relation the theoretical value of the color range degree of white light under the colour temperature；Adjust LED light
The luminous color range angle value of pearl obtains light mixing to theoretical value.
2. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 1, which is characterized in that be mixed into five
Also need to obtain the luminous intensity parameter area of five kinds of LED light before the light of kind color.
3. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 1, which is characterized in that obtain colour temperature
It is basic color with white light, then adjust separately in light mixing when the value of the color range degree of five kinds of light when value is minimum and when color temperature value maximum
The intensity of four kinds of red, green, blue, amber color of light, so that colour temperature reaches minimum value or maximum value.
4. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 3, which is characterized in that colour temperature reaches
When minimum value or maximum value, the color of light mixing shows index and is greater than 90%.
5. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 3, which is characterized in that adjustment is red,
When green, blue, four kinds of color of light of amber intensity, if colour temperature is higher than target colour temperature, increase blue or amber light intensity；Or
Person reduces red or green intensity.
6. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 5, which is characterized in that adjustment is red,
When green, blue, four kinds of color of light of amber intensity, if colour temperature is lower than target colour temperature, blue or amber light intensity is reduced；Or
Person increases red or green intensity.
7. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 1, which is characterized in that obtain respectively
After lowest color temperature value CT1 and highest color temperature value CT2, white, red, green, blue, five kinds of colors of amber light color range degree composition the
One data group and the second data group；Wherein the first data group are as follows: (W1, R1, G1, B1, A1), the second data are as follows: (W2, R2, G2,
B2、A2)。
8. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 7, which is characterized in that according to linear
When interpolation method obtains the linear relation of colour temperature and color range degree, coefficient sets are first obtained:
When obtaining any color temperature CT3 again, white, red, green,
The third data group of the color range angle value composition of blue, five kinds of colors of amber light are as follows:
(W3,R3,G3,B3,A3)；Wherein,
9. the color temperature adjusting method of high aobvious LED movies-making lamp according to claim 1, which is characterized in that adjust LED light
When color range angle value to the theoretical value that pearl shines, LED lamp bead is adjusted by the power of the light pearl of five kinds of colors by adjusting and is shone
Intensity changes the theoretical value of the color range degree of every kind of lamp bead.
10. a kind of high aobvious LED movies-making lamp, which is characterized in that require colour temperature described in 1-9 any one for perform claim
Adjusting method.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110553178A (en) * | 2019-08-30 | 2019-12-10 | 东莞锐视光电科技有限公司 | Device capable of adjusting and outputting wide color temperature and high color rendering index light |
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