CN110621106A - Control method for adaptively adjusting brightness, chromaticity and color temperature of lamp source - Google Patents
Control method for adaptively adjusting brightness, chromaticity and color temperature of lamp source Download PDFInfo
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- CN110621106A CN110621106A CN201910985015.0A CN201910985015A CN110621106A CN 110621106 A CN110621106 A CN 110621106A CN 201910985015 A CN201910985015 A CN 201910985015A CN 110621106 A CN110621106 A CN 110621106A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention relates to a control method for adaptively adjusting brightness, chromaticity and color temperature of a lamp source. The method comprises the following steps: initializing a first system; setting initial current gains of the red, green and white lamps respectively, and acquiring a spectrum curve of each lamp bead by a spectrometer to obtain chromaticity, brightness and color temperature; thirdly, according to the spectral curve of the white lamp, selecting a corresponding optical filter to be placed in front of the white lamp; acquiring chromaticity, brightness and color temperature values of a red lamp, a green lamp and a white lamp passing through an optical filter; fifthly, setting the brightness, chromaticity and color temperature values of the mixed light, and obtaining the theoretical adjustment value of the red light, the green light and the white light according to the algorithm that the color rendering index of the LED light is improved and approaches to the natural spectrum; sixthly, setting current gain; red light, green light and white light chromaticity, brightness and color temperature passing through the optical filter under the current gain are collected; and (ii) judging abs ((Y)r'‑Yr t)/Yr t)≤Δe&&abs((Yg'‑Yg t)/Yg t)≤Δe&&abs((Yw'‑Yw t)/Yw t) Delta e is less than or equal to; if the decision of the self-checking is negative, returning to the step sixteenth; if yes, the current gain meets the requirement ir+Δir、ig+Δig、iw+Δiw。
Description
Technical Field
The invention relates to the technical field of LEDs, in particular to a control method for adaptively adjusting brightness, chromaticity and color temperature of a lamp source.
Background
In recent years, with the development of LED technology, LEDs have become possible as illumination light sources, but light sources have strict requirements on color rendering index in illumination lamps. Unfortunately, the market of the LED illuminating lamp is still in a relatively chaotic state, and the color rendering indexes of all the people are uneven. In addition, the blue light of the LED is proved to threaten the eye health, and related ophthalmic diseases are easily induced, so that the LED lighting lamp becomes a limiting problem for popularization and application of LED lighting products.
The color rendering index is the degree to which an object, when illuminated with a certain light source and with a standard light source (typically, sunlight is used as the standard light source), will revert to its intrinsic color. It can be simply understood as color difference, the lower the color rendering index, the larger the color difference. The higher the color rendering index is, the better the ability to recognize colors is. However, most of the existing fluorescent lamps and poor-quality LED light sources have color rendering indexes concentrated around 70, that is, about 30% of the original color of the object is lost, and the long-term life and study in such lighting environment inevitably leads to the decrease and decline of color discrimination capability, and the situations of weak color, poor color discrimination capability, and the like.
The current white light LED technology mainly adopts a manufacturing process of coating a blue light chip with fluorescent powder, and follows the light emitting principle of a fluorescent lamp tube to a certain extent. In addition, the spectrum of the white light has a remarkable blue light spectrum peak between 400nm and 500 nm. However, blue light in this band has the potential to damage the retina.
In summary, the prior art has the following disadvantages:
the prior art has higher cost by adjusting the coating material.
The coating material is adjusted, so that the coating material is easily influenced by temperature in the use process.
The color rendering index of R9 and the like is improved by increasing red powder, and the cost is high.
By means of the scheme of adding the red, green and blue lamp beads, interference of blue light cannot be effectively reduced, and meanwhile, the effect of improving the color rendering index can be achieved by adjusting the luminance and the chromaticity of light at will.
CN201020648895.7 discloses a small LED endoscope illumination light source, which aims at the technical problems existing as endoscope illumination white light LED, mainly the light energy of the white light LED has strong energy in the blue light range of 400-480nm, so that the color temperature is generally above 7000K, and the requirement of the general endoscope on the color temperature of the light source is 6000 +/-500K, and the problem of supplementing the light energy in the yellow-green range is solved, thereby providing a portable, long-life and low-cost endoscope cold light source, and simultaneously, the color temperature of the light source can be adjusted according to the requirement to realize the small LED endoscope illumination light source of the multi-color temperature illumination. The technical scheme is as follows: the light source of the small LED endoscope illumination light source adopts a method of combining a white light LED and a red-green LED, and the brightness and the chromaticity of light are adjusted through a control circuit, so that the illumination of the light source with multiple color temperatures is realized; the power supply is connected with the control circuit after passing through the power switch, the brightness adjusting switch and the chroma adjusting switch are input to the control circuit, and the control circuit outputs the light source; the light source is a combination of white light and traffic lights; the white light LED is positioned at the center of a circle, red and green LED lamps are arranged on the circumference, and the red and green LED lamps are arranged at intervals and are symmetrically distributed with the same color LED light source. The disadvantage is that the energy ratio of blue light is reduced by only increasing red and green, but the harm of blue light is not weakened, that is, other technologies are not adopted to reduce blue light, and how to effectively improve the color rendering index is not mentioned.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a practical situation that the adjustment of current has little influence on the chromaticity value and the color temperature value of a single light source, so that only the influence on the brightness is considered, although the adjustment of the current of the monochromatic light source can change the chromaticity and the color temperature of the monochromatic light source, the change of the current of the monochromatic light source can be ignored, but the brightness, the chromaticity and the color temperature of the mixed color light can be changed remarkably after the current of each monochromatic light source is changed; in order to adjust and obtain the set brightness, chromaticity and color temperature, the current of the red, green and white lamps needs to be changed, the current of each light source is respectively adjusted according to the brightness, chromaticity and color temperature of the red, green and white lamps to realize the mixing of any proportion, and the natural light is approached as far as possible, so that the color rendering index approaches 100 to improve the control method of the self-adaptive adjustment of the brightness, chromaticity and color temperature of the LED red, green and white lamps. The invention solves another technical problem that different color temperatures can be preset by respectively controlling the currents of the red, green and white lamps through each control circuit under the configuration of software according to actual needs, and meanwhile, different color temperature control switching can be completed.
The technical scheme of the invention is that the control method for adaptively adjusting the brightness, the chromaticity and the color temperature of the lamp source is characterized by comprising the following steps:
starting and initializing a system;
two initial current gains i of red, green and white lamps are respectively arrangedr、ig、iwThe spectrometer collects the spectrum curve of each lamp bead to obtain the chromaticity, brightness and color temperature values of the lamp beads;
thirdly, selecting a corresponding optical filter to be placed in front of the white light according to the acquired spectrum curve of the white light;
the chromaticity, brightness and color temperature value x of the red lamp, the green lamp and the white lamp passing through the optical filter are collectedr、yr、Yr、Cr、xg、yg、Yg、Cg、xw、yw、Yw、Cw；
Fifthly, setting the brightness, the chromaticity and the color temperature value of the mixed light, calculating according to an algorithm for improving the color rendering index of the LED light to approach the natural spectrum according to the proportion of the red light, the green light and the white light to obtain a theoretical adjustment value of the red light, the green light and the white light,
Yr t＝ar×Yr；Yg t＝ag×Yg；Yw t＝aw×Yw；
sixthly, setting current gain to be ir+Δir、ig+Δig、iw+Δiw；
Anlunge collects chromaticity, brightness and color temperature values x of red lamp, green lamp and white lamp passing through optical filter under current gainr'、yr'、Yr'、Cr'、xg'、yg'、Yg'、Cg'、xw'、yw'、Yw'、Cw'；
And (ii) judging abs ((Y)r'-Yr t)/Yr t)≤Δe&&abs((Yg'-Yg t)/Yg t)≤Δe&&abs((Yw'-Yw t)/Yw t)≤Δe；
If the decision of the self-checking is negative, returning to the step sixteenth;
if yes, the current gain ir+Δir、ig+Δig、iw+ΔiwThe requirements are met;
in the formula: x and Y respectively represent colorimetric values, Y represents a brightness value, and C represents a color temperature value; alpha represents a proportional value to which the theoretical brightness is adjusted; r represents a red light; g represents green light; w represents a white lamp; abs represents the absolute value of the mathematical calculation.
Preferably, the method comprises the following steps: sixthly, adjusting the current gain to be i + delta i when Y' -YtΔ i is positive when < 0, when Y' -YtΔ i is negative > 0.
Preferably, the method comprises the following steps: the calculation formula of the color temperature value is as follows:
te＝(x-0.332)/(y-0.1858) (3)
ct＝5514.31-437*te*te*te+3601*te*te-6831*te (4)
in the formula, x and y respectively represent colorimetric values, ct represents a current color temperature value, and te represents an intermediate calculation process value;
formula three and formula four show that the current proportion of each single-color LED lamp is changed, the chromatic value after color mixing is changed, and the color temperature after color mixing is changed through the change of the chromatic value.
Preferably, the method comprises the following steps: the main control chip of the control circuit controls the current of the red, green and white lamps respectively through each control module under the configuration of software.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a filter arranged in front of a white lamp for filtering partial blue light.
The invention can respectively adjust the current of each light source according to the brightness, the chromaticity and the color temperature of the red light, the green light and the white light to realize the mixing of any proportion, and approach to natural light as much as possible, so that the color rendering index approaches to 100.
The main control chip can respectively control the currents of the red, green and white lamps to preset different color temperatures through the control circuits under the configuration of software, and meanwhile, different color temperature control switching can be completed.
Drawings
FIG. 1 is an exploded view of an LED lamp according to the present invention;
FIG. 2 is a schematic view of the structural assembly of the LED lamp of the present invention;
FIG. 3 is a schematic view of the structural assembly cross section of the LED lamp of the present invention;
FIG. 4 is a block circuit diagram of the lighthead control board of the present invention;
FIG. 5 is a schematic diagram of an optical filter assembly according to the present invention;
FIG. 6 is a schematic diagram of the optical filter assembly of the present invention;
FIG. 7 is a graph of the spectrum of a white LED according to the present invention;
FIG. 8 is a control flow chart of adaptively adjusting brightness, chromaticity and color temperature of the LED red, green and white lamps according to the present invention.
Description of the main component symbols:
LED lamp holder 1, LED control panel 2 and optical filter 3
LED lamp 4 white lamp 41 green lamp 42
Red lamp 43 diffusion board 5 lamp body 6
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings:
referring to fig. 1 to 3, the LED lamp 4 for improving color rendering index includes a housing 6, a control board 2 of the LED lamp holder 1, a white lamp 41 mounted on the control board 2, a green lamp 42 and a red lamp 43 separately mounted on two sides of the white lamp 41 are sequentially disposed in the housing 6, an optical filter 3 for filtering a part of blue light is disposed in front of the white lamp 41, and a scattering plate 5 covering an effective area of the LED lamp 4 is disposed in front of the optical filter 3. The filter 3 may be provided as a band pass filter or a cut filter.
Referring to fig. 1 to 4, the light source for improving color rendering index and the method for changing color temperature of the light source includes the following steps:
in the first step, after the white lamp 41 in the white lamp 41, the green lamp 42 and the red lamp 43 filters the peak of blue light through the optical filter 3, the white lamp 41 and the red lamp 43 and the green lamp 42 realize color mixing through the scattering plate 5 to form single color mixing light;
the control panel 2 adjusts the current proportion based on the original brightness, chromaticity and color temperature of the red lamp 43, the green lamp 42 and the white lamp 41 to achieve the purpose of adjusting the mixed color spectrum.
In this embodiment, the method for adjusting the current of each LED lamp 4 includes adjusting the current of the LED lamp 4 to change the brightness, chromaticity, and color temperature of the current LED lamp 4, that is, obtaining the brightness, chromaticity, and color temperature of the current LED lamp 4 by an optical instrument, and adjusting the current of the white lamp 41, the green lamp 42, and the red lamp 43 before leaving the factory to adaptively adjust the brightness, chromaticity, and color temperature ratios of the white lamp 41, the green lamp 42, and the red lamp 43, thereby achieving the brightness, chromaticity, and color temperature of the target mixed light.
In this embodiment, target brightness values, chromatic values, and color temperature values after various color mixtures may be preset, and the calculation formula of the color temperature is:
te＝(x-0.332)/(y-0.1858)
ct＝5514.31-437*te*te*te+3601*te*te-6831*te
in the formula, x and y respectively represent colorimetric values, ct represents a current color temperature value, and te represents an intermediate calculation process value;
the current proportion of each single-color LED lamp 4 is changed, the chromatic value after color mixing is changed, and the color temperature after color mixing is changed through the change of the chromatic value; the color temperature can be configured as desired.
Referring to fig. 4, under the configuration of software, the main control chip of the present invention controls the currents of the red light, the green light, and the white light through the control modules, respectively, so as to change the brightness value, the chromatic value, and the color temperature value after the light mixing. Meanwhile, various color temperatures can be preset according to actual needs, and the color temperature can be selected at will during actual use.
Referring to fig. 5 to 7, a common white light spectrum curve, such as the spectrum of the white light shown in fig. 7, has an obvious blue light spectrum peak between 400nm and 500nm, the bandpass filter or the cut-off filter shown in fig. 5 and 6 may be used to filter the blue light peak, and according to the center wavelength and the half-wave width of the peak of the blue light spectrum of the current white light, the bandpass filter having a difference of less than or equal to 5nm from the center wavelength and a half-wave width of the peak of the blue light spectrum, or the cut-off filter having a cut-off wavelength of 400nm and a total transmission wavelength of 500nm may be selected.
Referring to fig. 8, the method for adaptively adjusting the brightness, chromaticity, and color temperature of the red, green, and white light of the LED lamp includes the following steps:
starting and initializing a system;
two initial current gains i of red, green and white lamps are respectively arrangedr、ig、iwThe spectrometer collects the spectrum curve of each lamp bead to obtain the chromaticity, brightness and color temperature values of the lamp beads;
thirdly, selecting a corresponding optical filter to be placed in front of the white light according to the acquired spectrum curve of the white light;
the chromaticity, brightness and color temperature value x of the red lamp, the green lamp and the white lamp passing through the optical filter are collectedr、yr、Yr、Cr、xg、yg、Yg、Cg、xw、yw、Yw、Cw；
Fifthly, setting the brightness, the chromaticity and the color temperature value of the mixed light, calculating according to an algorithm for improving the color rendering index of the LED light to approach the natural spectrum according to the proportion of the red light, the green light and the white light to obtain a theoretical adjustment value of the red light, the green light and the white light,
Yr t＝ar×Yr；Yg t＝ag×Yg；Yw t＝aw×Yw；
sixthly, setting current gain to be ir+Δir、ig+Δig、iw+Δiw；
Anlunge collects chromaticity, brightness and color temperature values x of red lamp, green lamp and white lamp passing through optical filter under current gainr'、yr'、Yr'、Cr'、xg'、yg'、Yg'、Cg'、xw'、yw'、Yw'、Cw'；
And (ii) judging abs ((Y)r'-Yr t)/Yr t)≤Δe&&abs((Yg-Yg t)/Yg t)≤Δe&&abs((Yw'-Yw t)/Yw t)≤Δe；
If the decision of the self-checking is negative, returning to the step sixteenth;
if yes, the current gain ir+Δir、ig+Δig、iw+ΔiwThe requirements are met;
in the formula: x and Y respectively represent colorimetric values, Y represents a brightness value, and C represents a color temperature value; alpha represents a proportional value to which the theoretical brightness is adjusted; r represents a red light; g represents green light; w represents a white lamp; abs represents the absolute value of the mathematical calculation.
In this embodiment, the current gain described in step sixteenth is adjusted to be i + Δ i when Y' -YtΔ i is positive when < 0, when Y' -YtΔ i is negative > 0.
In the embodiment, the color temperature value calculation formula is as follows:
te＝(x-0.332)/(y-0.1858) (3)
ct＝5514.31-437*te*te*te+3601*te*te-6831*te (4)
in the formula, x and y respectively represent colorimetric values, ct represents a current color temperature value, and te represents an intermediate calculation process value;
formula three and formula four show that the current proportion of each single-color LED lamp is changed, the chromatic value after color mixing is changed, and the color temperature after color mixing is changed through the change of the chromatic value.
Referring to fig. 1 to 8, the algorithm for increasing the color rendering index of the LED lamp to approximate the natural spectrum includes:
in order to adjust and obtain the set brightness, chromaticity and color temperature, the current magnitude of the red light, the green light and the white light needs to be changed, and the following is a brightness adjustment algorithm:
wherein:
respectively are proportional values to which the brightness should be adjusted at the current;
in the formula: by XT、YT、ZTIndicating a target tristimulus value, X, of a mixed-color LEDr、Yr、ZrIndicating the current tristimulus value, X, of the red-light LEDg、Yg、ZgIndicating the current tristimulus value, X, of the green LEDw、Yw、ZwIndicating the current tristimulus value, x, of a white-light LEDT、yTIndicating the current color coordinate, x, of the mixed-color LEDr、yrRepresenting the current color coordinate, x, of the red LEDg、ygRepresenting the current color coordinate, x, of the green LEDw、ywRepresenting the current color coordinates of the white light LED;
the proportion of the current brightness which should be adjusted can be obtained through sorting:
the proportion of the current brightness to be adjusted, namely a, can be obtained through the formula (2)r×Yr，ag×Yg，aw×YwThe brightness values to which the theories of the chromaticity, the brightness and the color temperature of the target mixed color are adjusted are respectively the brightness values to which the theories of the red lamp, the green lamp and the white lamp are adjusted; at the moment, the current is adjusted by adopting a trial and error method, a spectrometer is adopted to collect a brightness value, the brightness value obtained after the current is adjusted is compared with the brightness value calculated by the algorithm, if not, the current value is continuously adjusted, and the spectrometer is repeated to collect the brightness valueAnd performing a comparison process, and performing successive approximation to make the finally adjusted brightness of the current gain consistent with the brightness value to which the theory should be adjusted.
In this embodiment, the formula for calculating the color temperature is as follows:
te＝(x-0.332)/(y-0.1858) (3)
ct＝5514.31-437*te*te*te+3601*te*te-6831*te (4)
in the formula: x and y respectively represent colorimetric values, ct represents a current color temperature value, and te represents an intermediate calculation process value;
the method comprises the steps of firstly, changing the current proportion of each single-color LED lamp, changing the chromatic value after color mixing, and changing the color temperature after color mixing; therefore, different color temperatures can be preset according to requirements.
The above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (4)
1. A control method for adaptively adjusting brightness, chromaticity and color temperature of a lamp source is characterized by comprising the following steps:
starting and initializing a system;
two initial current gains i of red, green and white lamps are respectively arrangedr、ig、iwThe spectrometer collects the spectrum curve of each lamp bead to obtain the chromaticity, brightness and color temperature values of the lamp beads;
thirdly, selecting a corresponding optical filter to be placed in front of the white light according to the acquired spectrum curve of the white light;
the chromaticity, brightness and color temperature value x of the red lamp, the green lamp and the white lamp passing through the optical filter are collectedr、yr、Yr、Cr、xg、yg、Yg、Cg、xw、yw、Yw、Cw；
Fifthly, setting the brightness, the chromaticity and the color temperature value of the mixed light, calculating according to an algorithm for improving the color rendering index of the LED light to approach the natural spectrum according to the proportion of the red light, the green light and the white light to obtain a theoretical adjustment value of the red light, the green light and the white light,
Yr t＝ar×Yr；Yg t＝ag×Yg；Yw t＝aw×Yw；
sixthly, setting current gain to be ir+Δir、ig+Δig、iw+Δiw；
Anlunge collects chromaticity, brightness and color temperature values x of red lamp, green lamp and white lamp passing through optical filter under current gainr'、yr'、Yr'、Cr'、xg'、yg'、Yg'、Cg'、xw'、yw'、Yw'、Cw'；
And (ii) judging abs ((Y)r'-Yr t)/Yr t)≤Δe&&abs((Yg'-Yg t)/Yg t)≤Δe&&abs((Yw'-Yw t)/Yw t)≤Δe；
If the decision of the self-checking is negative, returning to the step sixteenth;
if yes, the current gain ir+Δir、ig+Δig、iw+ΔiwThe requirements are met;
in the formula: x and Y respectively represent colorimetric values, Y represents a brightness value, and C represents a color temperature value; alpha represents a proportional value to which the theoretical brightness is adjusted; r represents a red light; g represents green light; w represents a white lamp; abs represents the absolute value of the mathematical calculation.
2. The control method for adaptively adjusting brightness, chromaticity and color temperature of the red, green and white LEDs according to claim 1, wherein the current gain is adjusted by i + Δ i when Y' -YtΔ i is positive when < 0, when Y' -YtΔ i is negative > 0.
3. The control method for adaptively adjusting the brightness, the chromaticity and the color temperature of the red, green and white LED lamps according to claim 1 is characterized in that the calculation formula of the color temperature value is as follows:
te＝(x-0.332)/(y-0.1858) (3)
ct＝5514.31-437*te*te*te+3601*te*te-6831*te (4)
in the formula, x and y respectively represent colorimetric values, ct represents a current color temperature value, and te represents an intermediate calculation process value;
formula three and formula four show that the current proportion of each single-color LED lamp is changed, the chromatic value after color mixing is changed, and the color temperature after color mixing is changed through the change of the chromatic value.
4. The control method for adaptively adjusting the brightness, the chromaticity and the color temperature of the red, the green and the white LED lamps according to claim 1, wherein a main control chip of the control circuit controls the current of the red, the green and the white LED lamps through each control module under the configuration of software.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740613A (en) * | 2022-05-12 | 2022-07-12 | 南京工业职业技术大学 | Holographic vision enhanced aiming display device and display method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201421183A (en) * | 2012-11-28 | 2014-06-01 | Univ Nat Taiwan Science Tech | Illumination apparatus and method for optimal vision |
| CN103925533A (en) * | 2014-04-29 | 2014-07-16 | 上海亚明照明有限公司 | Light distribution method for infant eye protection light source and infant eye protection lamp with adjustable light |
| CN106455224A (en) * | 2016-10-28 | 2017-02-22 | 浙江大学城市学院 | Adaptive auxiliary light source light emission generation device and auxiliary light source regulation method |
| US9651632B1 (en) * | 2013-08-20 | 2017-05-16 | Ketra, Inc. | Illumination device and temperature calibration method |
| US20180324473A1 (en) * | 2017-05-08 | 2018-11-08 | DISH Technologies L.L.C. | Systems and methods for facilitating seamless flow content splicing |
-
2019
- 2019-10-16 CN CN201910985015.0A patent/CN110621106B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201421183A (en) * | 2012-11-28 | 2014-06-01 | Univ Nat Taiwan Science Tech | Illumination apparatus and method for optimal vision |
| US9651632B1 (en) * | 2013-08-20 | 2017-05-16 | Ketra, Inc. | Illumination device and temperature calibration method |
| CN103925533A (en) * | 2014-04-29 | 2014-07-16 | 上海亚明照明有限公司 | Light distribution method for infant eye protection light source and infant eye protection lamp with adjustable light |
| CN106455224A (en) * | 2016-10-28 | 2017-02-22 | 浙江大学城市学院 | Adaptive auxiliary light source light emission generation device and auxiliary light source regulation method |
| US20180324473A1 (en) * | 2017-05-08 | 2018-11-08 | DISH Technologies L.L.C. | Systems and methods for facilitating seamless flow content splicing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740613A (en) * | 2022-05-12 | 2022-07-12 | 南京工业职业技术大学 | Holographic vision enhanced aiming display device and display method |
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