CN111750984A - Light sensing method and device of light emitting element - Google Patents
Light sensing method and device of light emitting element Download PDFInfo
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- CN111750984A CN111750984A CN201910234304.7A CN201910234304A CN111750984A CN 111750984 A CN111750984 A CN 111750984A CN 201910234304 A CN201910234304 A CN 201910234304A CN 111750984 A CN111750984 A CN 111750984A
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- light
- light emitting
- electrical signal
- emitting diode
- emitting element
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
Abstract
The invention provides a light sensing method and a device of a light-emitting element, which utilize a light-emitting element to be adjacently arranged on a light-emitting diode, the light-emitting diode receives light of the light-emitting element and generates an electrical signal, and a processing device is utilized to judge whether the magnitude of the electrical signal is greater than or less than a default value so as to judge the luminous intensity of the light-emitting element, if the electrical signal is damaged, the luminous intensity of the light-emitting element is influenced.
Description
Technical Field
The present invention relates to a method and an apparatus for sensing light of a light emitting device, and more particularly, to a method and an apparatus for sensing light of a light emitting device by using a light emitting diode and determining a light emitting intensity of the light emitting device.
Background
Light emitting diodes are optoelectronic devices with low power consumption, low heat generation, long operating life, impact resistance, small size, and good wavelength of emitted light, and are commonly used for indication of various home appliances and computer devices, such as instrument panels and indicator lights thereof.
As the era progresses, LEDs are gradually increasing in brightness, brightness and color variety, such as the key blue LEDs, which leads to the possibility of LED displays and LED lighting. The led display is composed of a plurality of led components, and can be used to replace lcd or pdp, and to display full-color graphic images.
Each pixel of the led display is composed of led dies. With the development of the times, the pixels of the light emitting diode display are higher and higher, so that more light emitting diode grains are adopted. The number of led dies used is particularly striking for large, high pixel displays.
Since the manufacturing process of each LED die is complicated, any one of the processes may directly affect the light emitting efficiency, and therefore, the same driving current is applied to each LED die, and the light emitting efficiency is not as same as possible. Therefore, before the led display is put into full use, a precise instrument is required to correct the light efficiency so that each led die group constituting a light-emitting pixel can display with the same brightness.
However, although the conventional led dies are precisely calibrated before use, after a period of time, the light emission of the dies has errors, and some led dies become gradually brighter or darker, which results in the problem of uneven brightness of the whole led display and lighting device.
In view of the above, the present invention provides a method and an apparatus for sensing light of a light emitting device, wherein the light emitting device is disposed adjacent to the light emitting diode, the light emitting diode receives light emitted by the light emitting device and generates a photocurrent signal, and a processing device receives and determines whether the magnitude of the current voltage exceeds a predetermined value, so as to determine the light emitting intensity of the light emitting device.
Disclosure of Invention
An objective of the present invention is to provide a light sensing method and device for a light emitting device, wherein a turned-off led is used to sense a light emitted from a turned-on light emitting device, and the light emitting diode generates an electrical signal according to the light emitting intensity of the light to obtain the light emitting intensity of the light emitting device.
To achieve the above-mentioned objectives and effects, the present invention provides a light sensing method for a light emitting device, comprising: providing a light-emitting element, wherein the light-emitting element emits light; sensing the light by using a light emitting diode, and generating an electrical signal according to the luminous intensity of the light and sending the electrical signal to a processing device; and the processing device judges whether the magnitude of the electrical signal exceeds a default value or not, and senses the luminous intensity of the luminous element by using the method.
In an embodiment of the invention, the light emitting diode is disposed adjacent to the light emitting element.
In an embodiment of the present invention, the Light-emitting element is a Light-emitting diode (LED).
In an embodiment of the invention, the light emitting wavelength of the light emitting diode is greater than the light emitting wavelength of the light emitting element.
In an embodiment of the present invention, the electrical signal includes a current and a voltage.
In an embodiment of the present invention, the light intensity of the light is proportional to the voltage and the current of the electrical signal.
In an embodiment of the present invention, the default values include current and voltage.
To achieve the above-mentioned objectives and effects, the present invention provides a light sensing device of a light emitting device, comprising: the LED comprises a light-emitting element, a light-emitting diode and a processing device, wherein the light-emitting element emits light; the light emitting diode is adjacently arranged on one side of the light emitting element, and the light emitting diode senses the light intensity of the light to generate an electrical signal; the processing device is electrically connected with the light emitting diode and receives the electrical signal, so that the device is utilized to realize the method.
In an embodiment of the present invention, the electrical signal includes a current and a voltage.
In an embodiment of the invention, the led is electrically connected to an amplifier, and the amplifier is electrically connected to the processing device.
Drawings
FIG. 1: which is a schematic step diagram according to an embodiment of the present invention;
FIG. 2: which is a schematic diagram of an apparatus according to an embodiment of the present invention; and
FIG. 3: which is a schematic diagram of an amplifier device according to an embodiment of the present invention.
[ brief description of the drawings ]
Light sensing method and device of light emitting element
10 light emitting element
12 light ray
20 light emitting diode
202 electrical signal
21 amplifier
22 treatment device
30 Package
Step S1
Step S2
Step S3
Detailed Description
In order to provide a further understanding and appreciation for the structural features and advantages achieved by the present invention, the following detailed description of the presently preferred embodiments is provided:
the invention provides a light sensing method and device of a light-emitting element, which utilize the light-emitting element to be adjacently arranged on a light-emitting diode, the light-emitting diode receives the light emitted by the light-emitting element and generates an electrical signal, and then a processing device receives and judges whether the magnitude of the electrical signal is greater than or less than a default value, so as to judge the luminous intensity of the light-emitting element.
Referring to fig. 1, which is a schematic step view illustrating a light sensing method of a light emitting device according to a first embodiment of the present invention, the method includes:
step S1: providing a light-emitting element which emits light;
step S2: sensing light by using a light emitting diode, generating an electrical signal according to the luminous intensity of the light and sending the electrical signal to a processing device; and
step S3: the processing device determines whether the magnitude of the electrical signal is greater than or less than a predetermined value.
Referring to fig. 1 again, as shown in the drawing, in step S1, and referring to fig. 1 and fig. 2, fig. 2 is a schematic diagram of an apparatus according to an embodiment of the present invention, the embodiment provides a Light emitting device 10 that can be disposed in a package 30, the Light emitting device 10 emits a Light 12, in the embodiment, the Light emitting device 10 uses a Light-emitting diode (LED), which is preferably an ultraviolet LED, but the embodiment is not limited thereto, and other electronic components that emit Light by electric power, such as a laser Light emitting device, may also be used.
In step S2, referring to fig. 1 and fig. 2, as shown, a Light emitting diode 20 is used to sense the Light 12 of the Light emitting device 10, and is disposed at one side of the Light emitting device 10, which can be disposed inside the package 30 of the Light emitting device 10 together, but not limited thereto, and generate an electrical signal 202 according to the Light intensity of the Light 12 and send the electrical signal to a processing device 22, wherein the Light emitting diode 20 is disposed adjacent to the Light emitting device 10 to easily receive the Light 12, the electrical signal 202 includes current and voltage, the voltage and current of the electrical signal 202 are proportional to the Light intensity of the Light 12, the processing device 22 receives the electrical signal 202 for subsequent determination, in this embodiment, the Light emitting diode 20 uses a Light Emitting Diode (LED) having a Light-emitting wavelength longer than the Light emitting wavelength of the Light emitting device 10, however, the present invention is not limited thereto, and as long as the light emitted from the light emitting diode 20 has a wavelength longer than that of the light emitting element used in the light emitting element 10, other light emitting diodes with different wavelengths may be used; the processing device can use a conventional circuit board.
In step S3, referring to fig. 1 and 2, as shown in the figure, the processing device 22 determines whether the magnitude of the electrical signal 202 exceeds a predetermined value, in the embodiment, the predetermined value is based on a current or a voltage, and has an upper and lower range, for example, whether the magnitude of the current of the electrical signal 202 is greater than or less than a predetermined current value, if the magnitude of the current is greater than the predetermined value, it indicates that the light-emitting intensity of the light-emitting element 10 is too high, indicating that the light-emitting element is abnormal, otherwise, the magnitude of the current is less than the predetermined value, indicating that the light-emitting intensity of the light-emitting element 10 is too low, indicating that the light.
In this way, the light sensing method of the light emitting device according to the first embodiment of the present invention is completed, and compared with the conventional method of detecting and sensing the light emitting state of the light emitting device, the light emitting diode with lower cost is used to sense the light of the light emitting device to distinguish the light emitting intensity, and the light emitting device can also obtain a more accurate light emitting state in the same package.
Please refer to fig. 3, which is a schematic diagram of an amplifier device according to an embodiment of the present invention, as shown in the figure, the present embodiment is advantageous for the light emitting diode 20 to be electrically connected to an amplifier 21 based on the above implementation, the amplifier 21 is electrically connected to the processing device 22, in the present embodiment, the amplifier 21 is used for amplifying the electrical signal 202 generated by the light emitting diode 20, and the amplifier 21 uses a conventional amplifying circuit in the present embodiment, so that details are not repeated.
In summary, the present invention provides a light sensing method and device for a light emitting device, wherein the light emitting device is disposed adjacent to a light emitting diode, the light emitting diode receives light emitted by the light emitting device and generates an electrical signal, and a processing device receives and determines whether the magnitude of the electrical signal exceeds a predetermined value, so as to determine the light emitting intensity of the light emitting device.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (12)
1. A light sensing method of a light emitting device is provided, which includes the steps of:
providing a light-emitting element, wherein the light-emitting element emits light;
sensing the light by using a light emitting diode, and generating an electrical signal according to the luminous intensity of the light and sending the electrical signal to a processing device; and the processing device judges whether the magnitude of the electrical signal is larger than or smaller than a default value.
2. The method as claimed in claim 1, wherein the light emitting diode is disposed adjacent to the light emitting device.
3. The method as claimed in claim 1, wherein the light-emitting device is a light-emitting diode.
4. The method as claimed in claim 1, wherein the light emitting diode has a wavelength longer than that of the light emitting element.
5. The method as claimed in claim 1, wherein the electrical signal comprises a current and a voltage.
6. The method as claimed in claim 5, wherein the intensity of the light is proportional to the voltage and current of the electrical signal.
7. The method as claimed in claim 1, wherein the default values include current and voltage.
8. A light sensing device of a light emitting device, comprising:
a light emitting element which emits a light; and
the light emitting diode is adjacently arranged on one side of the light emitting element and senses light intensity of the light to generate an electrical signal; the electrical signal is amplified by an amplifier and then output to a processing device, and the processing device performs judgment processing.
9. The light sensing device of claim 8, wherein the electrical signals comprise current and voltage.
10. The device as claimed in claim 8, wherein the light-emitting device comprises a light-emitting diode.
11. The device for sensing light of claim 8, wherein the light emitting diode has a wavelength longer than that of the light emitting element.
12. The device as claimed in claim 8, wherein the light emitting diode is electrically connected to an amplifier, and the amplifier is electrically connected to the processing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234304.7A CN111750984A (en) | 2019-03-26 | 2019-03-26 | Light sensing method and device of light emitting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234304.7A CN111750984A (en) | 2019-03-26 | 2019-03-26 | Light sensing method and device of light emitting element |
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| Publication Number | Publication Date |
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| CN111750984A true CN111750984A (en) | 2020-10-09 |
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| CN201910234304.7A Pending CN111750984A (en) | 2019-03-26 | 2019-03-26 | Light sensing method and device of light emitting element |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10227487A1 (en) * | 2002-06-19 | 2004-03-18 | Wilo Ag | Illumination device for display back-lighting, comprises one or more light emitting diodes, at least one of which also measures the ambient light level which is then used by a microprocessor to regulate the display |
| CN101008741A (en) * | 2006-01-25 | 2007-08-01 | 启萌科技有限公司 | Back lighting module of liquid crystal display device |
-
2019
- 2019-03-26 CN CN201910234304.7A patent/CN111750984A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10227487A1 (en) * | 2002-06-19 | 2004-03-18 | Wilo Ag | Illumination device for display back-lighting, comprises one or more light emitting diodes, at least one of which also measures the ambient light level which is then used by a microprocessor to regulate the display |
| CN101008741A (en) * | 2006-01-25 | 2007-08-01 | 启萌科技有限公司 | Back lighting module of liquid crystal display device |
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Application publication date: 20201009 |