CN106195656A - According to human eye state regulation colour temperature and the operation shadowless lamp of brightness - Google Patents
According to human eye state regulation colour temperature and the operation shadowless lamp of brightness Download PDFInfo
- Publication number
- CN106195656A CN106195656A CN201610552668.6A CN201610552668A CN106195656A CN 106195656 A CN106195656 A CN 106195656A CN 201610552668 A CN201610552668 A CN 201610552668A CN 106195656 A CN106195656 A CN 106195656A
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- led
- brightness
- colour temperature
- correction
- shadowless lamp
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Classifications
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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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/20—Lighting for medical use
- F21W2131/205—Lighting for medical use for operating theatres
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, including: LED group, is White LED light source including main LED, the first correction LED and the second correction LED, main LED, first correction LED is orange LED light source, and the second correction LED is blue led light source；Brightness and colour temperature adjusting module, brightness and colour temperature adjusting module electrically connect with LED group, brightness and colour temperature adjusting module include brightness regulating circuit and colour temperature regulation circuit, and colour temperature regulation circuit reaches to adjust thus the colour temperature of whole shadowless lamp for the colour mixture ratio adjusting main LED, the first correction LED and the second correction LED；Described brightness regulating circuit is for regulating the brightness of LED group；Image acquisition analyzes module, is used for obtaining doctor's face image and judging doctor's degree of fatigue, and concurrent information is to brightness and colour temperature adjusting module.The present invention can be automatically adjusted colour temperature and the brightness of shadowless lamp according to the degree of fatigue of doctor, with the demand of applicable doctor.
Description
Technical field
The present invention relates to a kind of according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, belong to shadowless lamp technology neck
Territory.
Background technology
For a long time, surgical operation uses Halogen light as illumination light source.Halogen light is used to be primarily present following several
Individual problem: 1, Halogen light can produce bigger heat；In order to eliminate the heat affecting that operating room is caused by Halogen light, need at Halogen light
On install additional optical filter absorb heat ray, add structure complexity and the Financial cost of shadowless lamp；2, the Halogen light life-span is shorter, its
The universal life-span was at about 2000 hours；3, the colour temperature of Halogen light is fixing, it is impossible to meet all operating requirements；Outside
Operative sites different in section's operation needs different colour temperatures, to reach the requirement that develops the color；4, cannot the tired shape of self adaptation doctor
State carries out automatic colour temperature and brightness regulation.The operating time of complicated operation is the longest, in the process due to the high intensity of doctor
The high concentration of work and attention is inevitably generated fatigue so that doctor's operant skill declines.If can be according to doctor's
Fatigue state suitably adjusts colour temperature and the brightness of shadowless lamp, it will obtain preferable effect.
Summary of the invention
The technical problem to be solved is: overcome the deficiencies in the prior art, it is provided that a kind of according to human eye state tune
Joint colour temperature and the operation shadowless lamp of brightness, suitably adjust colour temperature and the brightness of shadowless lamp according to the fatigue state of doctor, to obtain
Suitably perform the operation luminous environment.
In order to solve above-mentioned technical problem, the technical scheme is that, a kind of according to human eye state regulation colour temperature with bright
The operation shadowless lamp of degree, including:
LED group, is White LED light source including main LED, the first correction LED and the second correction LED, main LED, the first correction LED
For orange LED light source, the second correction LED is blue led light source；
Brightness and colour temperature adjusting module, brightness and colour temperature adjusting module electrically connect with LED group, brightness and colour temperature adjusting module bag
Including brightness regulating circuit and colour temperature regulation circuit, colour temperature regulation circuit is used for adjusting main LED, the first correction LED and the second correction
The colour mixture ratio of LED reaches to adjust thus the colour temperature of whole shadowless lamp；Described brightness regulating circuit is for regulating the bright of LED group
Degree；
Image acquisition analyzes module, is used for obtaining doctor's face image and judging doctor's degree of fatigue, concurrent information to brightness and
Colour temperature adjusting module, in order to automatically adjust brightness and colour temperature.
Further providing for a kind of image acquisition and analyze the concrete structure of module, described image acquisition is analyzed module and is included:
CCD or CMOS camera, be used for identifying face scope and judging human eye degree of fatigue by algorithm；
Pupil size judge module, when pupil diminishes, brightness and colour temperature adjusting module control to reduce the brightness of LED group, directly
Recovering normal size to pupil, when pupil becomes big, brightness and colour temperature adjusting module control to improve the brightness of LED group；
Eyes folding degree judge module, is considered an eyes closed when iris is capped area, thus judges more than 65%
The length of wink time and frequency of wink；
Frequency of wink judges, when frequency of wink step-down, it is believed that people occurs that fatigue, brightness and colour temperature adjusting module control to improve color
Temperature is with the state of applicable human eye.
Further, the colour temperature of described main LED is set in shadowless lamp lowest color temperature and in middle colour temperature between high color temperature,
The colour temperature of the first correction LED is in the one end near lowest color temperature, and the colour temperature of the second correction LED is in the one end near high color temperature.
Further provide for brightness and the concrete structure of colour temperature adjusting module, described brightness and colour temperature adjusting module and also include control
Device processed, described brightness regulating circuit and colour temperature regulation circuit are controlled by pulse-width signal by controller；Described control
Device processed is by a constant-current source and LED group brightness regulating circuit in series, in described LED group, and main LED, the first correction LED
Gate-controlled switch all it is in series with on the second correction LED place branch road；Controller produces the first pulse-width signal regulation constant-current source
The size of electric current, to control the brightness of LED group；Described controller is propped up by the first phase inverter and the first correction LED place
The gate-controlled switch electrical connection on road, controller is electrically connected by the gate-controlled switch of the second phase inverter and the second correction LED place branch road,
Controller electrically connects with the gate-controlled switch of main LED place branch road；Controller produces second pulse-width signal regulation the first correction
The ON time ratio of LED and main LED, thus adjust the colour temperature of warm colour end, controller produces the 3rd pulse-width signal regulation the
The ON time ratio of two correction LED and main LED, thus adjust the colour temperature of cool colour end.
Further, described gate-controlled switch uses metal-oxide-semiconductor, and described controller uses single-chip microcomputer.
Further for being easy to manually regulate, described operation shadowless lamp also includes manually adjusting and setting module, manually adjusts
Whole and setting module is made up of button and knob, and button and knob all electrically connect with brightness and colour temperature adjusting module, and knob is used for
Manual adjustment colour temperature and brightness, button is used for selecting built-in colour temperature and brightness, described button to include four, respectively department of cerebral surgery
Pattern, thoracic surgery pattern, abdominal cavity surgery pattern and plastic surgery's pattern.
Further for improving local lighting degree, described regulates colour temperature and the operation shadowless lamp of brightness according to human eye state
Also including the secondary light source that can change illumination direction, secondary light source is arranged on shadowless lamp or operation edge of table.
Have employed technique scheme, the method have the advantages that
1, the present invention can be automatically adjusted colour temperature and the brightness of shadowless lamp according to the degree of fatigue of doctor, with the demand of applicable doctor；
2, the present invention uses LED group that caloric value is less as luminous source, has substantially no effect on the thermal environment of operating room；
3, the present invention is when regulating brightness and the colour temperature of LED group, is individually regulated the bright of LED group by brightness regulating circuit
Degree, individually regulates colour temperature by colour temperature regulation circuit, and the two does not influences each other；
4, it is additionally provided with different brightness and color temperature mode in the brightness of the present invention and colour temperature adjusting module, can be suitable for different
Surgical light requires and manually adjustable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is brightness and the structural representation of colour temperature adjusting module of the present invention；
Fig. 3 is to manually adjust the panel figure with setting module；
In figure, the 1, first correction LED, the 2, main LED, 3, second correction LED, 4, knob, 5, button.
Detailed description of the invention
It is clearly understood to make present disclosure be easier to, below according to specific embodiment and combine accompanying drawing, right
The present invention is described in further detail.
As shown in Figure 1 and Figure 2, a kind of according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, including:
LED group, corrects LED 1 and the second correction LED 3 including main LED 2, first, and main LED 2 is White LED light source, the
One correction LED 1 is orange LED light source, and the second correction LED 3 is blue led light source；
Brightness and colour temperature adjusting module, brightness and colour temperature adjusting module electrically connect with LED group, brightness and colour temperature adjusting module bag
Including brightness regulating circuit and colour temperature regulation circuit, colour temperature regulation circuit is used for adjusting main LED 2, first and corrects LED 1 and second
The colour mixture ratio of correction LED 3 reaches to adjust the colour temperature of whole operation shadowless lamp；Described brightness regulating circuit is used for regulating LED
The brightness of group；
Image acquisition analyzes module, is used for obtaining doctor's face image and judging doctor's degree of fatigue, concurrent information to brightness and
Colour temperature adjusting module, in order to automatically adjust brightness and colour temperature.
Preferably, described image acquisition analysis module includes:
CCD or CMOS camera, be used for identifying face scope by image processing method, and it be fixed to carry out eyes in the range of face
Position, and judge human eye degree of fatigue by algorithm；
Pupil size judge module, when pupil diminishes, brightness and colour temperature adjusting module control to reduce the brightness of LED group, directly
Recovering normal size to pupil, when pupil becomes big, brightness and colour temperature adjusting module control to improve the brightness of LED group；
Eyes folding degree judge module, is considered an eyes closed when iris is capped area, thus judges more than 65%
The length of wink time and frequency of wink；
Frequency of wink judges, when frequency of wink step-down, it is believed that people occurs that fatigue, brightness and colour temperature adjusting module control to improve color
Temperature is with the state of applicable human eye.
Further, the colour temperature of described main LED 2 is set in shadowless lamp lowest color temperature and middle colour temperature between high color temperature
On, such as: lowest color temperature is 2500K, high color temperature is 8500K, then the colour temperature of main LED is 5000K；First correction LED 1
Colour temperature near one end of lowest color temperature, the colour temperature of the second correction LED 3 is in the one end near high color temperature；Master is adjusted with crossing
LED 2, first corrects the colour mixture ratio of LED 1 and the second correction LED 3 and reaches to adjust the mesh of the colour temperature of whole operation shadowless lamp
's.
Main LED 2 emits white light, the LED of preferably about 450nm adjustable peak luminous wavelength and utilize this LED excitation preferably
The fluorophor that wavelength adjusts photoluminescence peak wavelength at about 550nm combines；
First correction 1 orange light of LED, the orange LED of preferably about 600nm adjustable peak luminous wavelength；
Second correction LED 3 blue light-emitting, the LED of preferably about 450nm adjustable peak luminous wavelength；Adjust above-mentioned three kinds of LED
Colour mixture ratio, the colour temperature of LED group can be adjusted in the range of 2500K to 8500K.
Preferably, as in figure 2 it is shown, described brightness and colour temperature adjusting module also include controller, controller uses single-chip microcomputer,
Under the support of software, send the PWM1 ripple of regulation brightness, adjust PWM2 and the PWM3 ripple of colour temperature；Described brightness regulating circuit
Controlled by pulse-width signal by controller with colour temperature regulation circuit；Described controller passes through a constant-current source and LED
Organizing brightness regulating circuit in series, in described LED group, main LED, the first correction LED and second correct on the branch road of LED place
All it is in series with gate-controlled switch；Controller produces the size of the first pulse-width signal PWM1 regulation constant-current source electric current, to control LED
The brightness of lamp group；Described controller is electrically connected by the gate-controlled switch of the first phase inverter and the first correction LED 1 place branch road,
Controller is electrically connected by the gate-controlled switch of the second phase inverter and the second correction LED 3 place branch road, controller and main LED 2 institute
Gate-controlled switch at branch road electrically connects；Controller produces second pulse-width signal PWM2 regulation the first correction LED 1 and main LED
The ON time ratio of 2, thus adjust the colour temperature of warm colour end, controller produces the 3rd pulse-width signal PWM3 regulation the second correction
The ON time ratio of LED 3 and main LED 2, thus adjust the colour temperature of cool colour end.Constant-current source electric current is not interfered with during regulation colour temperature
Therefore overall brightness keeps constant.
Produce when PMW2 with PWM3 is different, produce PWM2 ripple when colour temperature adjusts toward low side, when colour temperature is toward high-end adjustment
Produce PWM3 ripple, regulate colour temperature by the dutycycle adjusting PWM2 and PWM3 ripple.
Constant-current source uses the constant-current source chip enough driving LED group, such as: Fujitsu quasiconductor MB39C602, permissible
Multi-disc is used in parallel.
Preferably, described gate-controlled switch uses metal-oxide-semiconductor, the metal-oxide-semiconductor of the most sufficiently large electric current, and described controller uses monolithic
Machine.
Alternatively, as it is shown on figure 3, described operation shadowless lamp also includes manually adjusting and setting module, manually adjust and set
Cover half block is made up of button 5 and knob 4, and button 5 and knob 4 all electrically connect with brightness and colour temperature adjusting module, and knob 4 is for people
Work regulation colour temperature and brightness, button 5 is used for selecting built-in colour temperature and brightness, described button 5 to include four, respectively department of cerebral surgery
Pattern, thoracic surgery pattern, abdominal cavity surgery pattern and plastic surgery's pattern.
Alternatively, as it is shown in figure 1, the described operation shadowless lamp according to human eye state regulation colour temperature and brightness also include can
Changing the secondary light source of illumination direction, secondary light source is arranged on shadowless lamp or operation edge of table.
The present invention can be automatically adjusted colour temperature and the brightness of shadowless lamp according to the degree of fatigue of doctor, with the need of applicable doctor
Ask；The present invention uses LED group that caloric value is less as luminous source, has substantially no effect on the thermal environment of operating room；The present invention exists
When the brightness of regulation LED group is with colour temperature, is individually regulated the brightness of LED group by brightness regulating circuit, regulated by colour temperature
Circuit individually regulates colour temperature, and the two does not influences each other；It is additionally provided with different bright in the brightness of the present invention and colour temperature adjusting module
Degree and color temperature mode, can be suitable for different surgical light and require and manually adjustable.
Particular embodiments described above, to present invention solves the technical problem that, technical scheme and beneficial effect carry out
Further describe, be it should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to this
Invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in this
Within bright protection domain.
Claims (7)
1. one kind regulates colour temperature and the operation shadowless lamp of brightness according to human eye state, it is characterised in that including:
LED group, including main LED (2), the first correction LED (1) and the second correction LED (3), main LED (2) is White LED light
Source, the first correction LED (1) is orange LED light source, and the second correction LED (3) is blue led light source；
Brightness and colour temperature adjusting module, brightness and colour temperature adjusting module electrically connect with LED group, brightness and colour temperature adjusting module bag
Including brightness regulating circuit and colour temperature regulation circuit, colour temperature regulation circuit is used for adjusting main LED (2), the first correction LED (1) and the
The colour mixture ratio of two corrections LED (3) reaches to adjust the colour temperature of whole operation shadowless lamp；Described brightness regulating circuit is used for regulating
The brightness of LED group；
Image acquisition analyzes module, is used for obtaining doctor's face image and judging doctor's degree of fatigue, concurrent information to brightness and
Colour temperature adjusting module, in order to automatically adjust brightness and colour temperature.
The most according to claim 1 according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, it is characterised in that institute
State image acquisition analysis module to include:
CCD or CMOS camera, be used for identifying face scope and judging human eye degree of fatigue by algorithm；
Pupil size judge module, when pupil diminishes, brightness and colour temperature adjusting module control to reduce the brightness of LED group, directly
Recovering normal size to pupil, when pupil becomes big, brightness and colour temperature adjusting module control to improve the brightness of LED group；
Eyes folding degree judge module, is considered an eyes closed when iris is capped area, thus sentences more than 65%
The length of disconnected wink time and frequency of wink；
Frequency of wink judges, when frequency of wink step-down, it is believed that people occurs that fatigue, brightness and colour temperature adjusting module control to improve color
Temperature is with the state of applicable human eye.
The most according to claim 1 and 2 according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, its feature exists
It is set in shadowless lamp lowest color temperature and in middle colour temperature between high color temperature, the first correction in: the colour temperature of described main LED (2)
The colour temperature of LED (1) is in the one end near lowest color temperature, and the colour temperature of the second correction LED (3) is in the one end near high color temperature.
It is the most according to claim 3 according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, it is characterised in that: institute
State brightness and colour temperature adjusting module also includes that controller, described brightness regulating circuit and colour temperature regulation circuit are led to by controller
Cross pulse-width signal to control；Described controller is by a constant-current source and LED group brightness regulating circuit in series, described
In LED group, main LED, the first correction LED and the second correction LED place branch road are all in series with gate-controlled switch；Controller produces
The size of the first pulse-width signal regulation constant-current source electric current, to control the brightness of LED group；Described controller passes through first
Phase inverter and the gate-controlled switch electrical connection of the first correction LED (1) place branch road, controller is by the second phase inverter and the second correction
The gate-controlled switch electrical connection of LED (3) place branch road, controller electrically connects with the gate-controlled switch of main LED (2) place branch road；Control
Device produces second pulse-width signal regulation the first correction LED (1) and ON time ratio of main LED (2), thus adjusts warm colour end
Colour temperature, controller produces the 3rd pulse-width signal regulation the second correction LED (3) and the ON time ratio of main LED (2), from
And adjust the colour temperature of cool colour end.
It is the most according to claim 4 according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, it is characterised in that: institute
Stating gate-controlled switch and use metal-oxide-semiconductor, described controller uses single-chip microcomputer.
It is the most according to claim 5 according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, it is characterised in that: institute
State operation shadowless lamp also to include manually adjusting and setting module, manually adjust with setting module by button (5) and knob (4) group
Becoming, button (5) and knob (4) all electrically connect with brightness and colour temperature adjusting module, and knob (4) is used for manual adjustment colour temperature and bright
Degree, button (5) is for selecting built-in colour temperature and brightness, described button (5) to include four, respectively outside department of cerebral surgery pattern, breast
Section's pattern, abdominal cavity surgery pattern and plastic surgery's pattern.
It is the most according to claim 1 according to human eye state regulation colour temperature and the operation shadowless lamp of brightness, it is characterised in that: institute
The operation shadowless lamp according to human eye state regulation colour temperature and brightness stated also includes changing the secondary light source of illumination direction, auxiliary
Light source is arranged on shadowless lamp or operation edge of table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610552668.6A CN106195656B (en) | 2016-07-13 | 2016-07-13 | The operation shadowless lamp of colour temperature and brightness is adjusted according to human eye state |
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|---|---|---|---|
| CN201610552668.6A CN106195656B (en) | 2016-07-13 | 2016-07-13 | The operation shadowless lamp of colour temperature and brightness is adjusted according to human eye state |
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| CN106195656A true CN106195656A (en) | 2016-12-07 |
| CN106195656B CN106195656B (en) | 2019-01-04 |
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ID=57477842
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369482A (en) * | 2016-08-31 | 2017-02-01 | 昆山邦泰汽车零部件制造有限公司 | Operation shadowless lamp and use method thereof |
| CN106880316A (en) * | 2017-01-19 | 2017-06-23 | 广东美的环境电器制造有限公司 | Toilet seat and its human body clean control method |
| WO2018145271A1 (en) * | 2017-02-08 | 2018-08-16 | 格兰比圣（深圳）科技有限公司 | Smart illumination lamp |
| CN108591868A (en) * | 2018-03-27 | 2018-09-28 | 中国地质大学（武汉） | A kind of automatic brightness-adjusting table lamp based on eye strain degree |
| CN109068434A (en) * | 2018-04-11 | 2018-12-21 | 长春中国光学科学技术馆 | A kind of displaying device adjusting colour temperature and brightness |
| CN109949193A (en) * | 2019-04-02 | 2019-06-28 | 中国计量大学上虞高等研究院有限公司 | The detection of study attention and anticipation device and method under variable luminous environment |
| CN111950462A (en) * | 2020-08-13 | 2020-11-17 | 深圳市商汤科技有限公司 | Brightness adjusting method and device, electronic equipment and storage medium |
| CN117015121A (en) * | 2023-10-07 | 2023-11-07 | 南通医疗器械有限公司 | Fault alarm management method and system for shadowless lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369482A (en) * | 2016-08-31 | 2017-02-01 | 昆山邦泰汽车零部件制造有限公司 | Operation shadowless lamp and use method thereof |
| CN106880316A (en) * | 2017-01-19 | 2017-06-23 | 广东美的环境电器制造有限公司 | Toilet seat and its human body clean control method |
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| CN108591868A (en) * | 2018-03-27 | 2018-09-28 | 中国地质大学（武汉） | A kind of automatic brightness-adjusting table lamp based on eye strain degree |
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| CN109068434A (en) * | 2018-04-11 | 2018-12-21 | 长春中国光学科学技术馆 | A kind of displaying device adjusting colour temperature and brightness |
| CN109949193A (en) * | 2019-04-02 | 2019-06-28 | 中国计量大学上虞高等研究院有限公司 | The detection of study attention and anticipation device and method under variable luminous environment |
| CN111950462A (en) * | 2020-08-13 | 2020-11-17 | 深圳市商汤科技有限公司 | Brightness adjusting method and device, electronic equipment and storage medium |
| CN117015121A (en) * | 2023-10-07 | 2023-11-07 | 南通医疗器械有限公司 | Fault alarm management method and system for shadowless lamp |
| CN117015121B (en) * | 2023-10-07 | 2023-12-15 | 南通医疗器械有限公司 | Fault alarm management method and system for shadowless lamp |
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| Publication number | Publication date |
|---|---|
| CN106195656B (en) | 2019-01-04 |
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