Special LED for chlorophyll fluorescence excitation
A technology of chlorophyll fluorescence and light, applied in fluorescence/phosphorescence, material excitation analysis, material analysis through optical means, etc., can solve the problems of large volume, complex structure, large emission angle, etc.
Pending Publication Date: 2018-09-18
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Problems solved by technology
However, the existing LEDs on the market have a large emission angle, and an external lens is required to achieve focusing, resulting in a complex structure and large volume
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0020] The invention provides a special LED for chlorophyll fluorescence excitation, such as figure 1 As shown, the structure of the LED is relatively simple, and it has an ideal efficiency of exciting chlorophyll fluorescence.
[0021] figure 1 As shown in the LED schematic diagram, the special LED for exciting chlorophyll fluorescence includes: positive and negative connecting electrodes 1 for connecting to an external power supply; reflector cup 2 for reflecting the light emitted by the light emitting source 3 into relatively parallel outgoing rays 7; the light emitting source 3 is The light-emitting diode chip can emit light of a specific spectrum when it is powered on; the top of the packaging lens 4 is a convex lens 5, which is used to gather the parallel light 7 reflec...
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Abstract
The invention discloses a special LED for chlorophyll fluorescence excitation, which comprises a packaging lens, a reflection cup and a light emitting source, wherein the reflection cup and the lightemitting source are positioned at the bottom part inside the packaging lens, the light emitting source is arranged at the center of the bottom part of the reflection cup, the reflection cup is used for reflecting light rays emitted by the light emitting source into parallel emergent light rays, the top end of the packaging lens is a convex lens, and the convex lens is used for converging the parallel light rays reflected by the reflection cup; and the light emitting source is connected with an external power source by means of positive and negative connecting poles extending out of the bottompart of the packaging lens. The special LED for chlorophyll fluorescence excitation disclosed by the invention is simple in structure, the light with specific wavelength emitted by the light emittingsource is reflected into parallel emergent light rays by utilizing the reflection cup, and the parallel emergent light rays are converged at a specific position by means of the convex lens at the toppart of the packaging lens, and the special LED has ideal efficiency for chlorophyll fluorescence excitation.
Description
technical field [0001] The invention relates to a special LED for chlorophyll fluorescence excitation. Background technique [0002] An important feature of chlorophyll is that when it is irradiated with light of a specific wavelength (465nm), it can emit fluorescence of a higher wavelength. At present, almost all in-situ sensors for detecting chlorophyll in the ocean use LEDs with specific wavelengths to excite chlorophyll fluorescence. However, the existing LEDs on the market have a large emission angle and need to add an external lens to achieve focusing, resulting in a complex structure and large volume. Therefore, in order to meet the demand for in situ excitation of chlorophyll fluorescence, LEDs with specific wavelengths and light-emitting focal points are required to achieve simple structure and higher-efficiency excitation. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a special LED for chloroph...
Claims
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IPC IPC(8): H01L33/58H01L33/60G01N21/64
CPCH01L33/58H01L33/60G01N21/64G01N2201/062G01N2021/635
Inventor 马海宽曹煊吴宁褚东志张述伟马然孔祥峰史倩刘凤庆刘杰
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI