Filtering structure applied to LED, LED display screen and optical loss coefficient acquiring method

Abstract

An embodiment of the invention discloses a filtering structure applied to an LED, an LED display screen and an optical loss coefficient acquiring method. The filtering structure applied to the LED, the LED display screen and the optical loss coefficient acquiring method have the advantages that the technologies of blue-ray filtering and phase matching of the filtering structure of the LED are realized, the technical problem of visual impairment resulting from that LED optical wavelength is single and spectrum with short wavelength is high in energy is solved, and the technical problem of optical loss among modals is solved. The filtering structure comprises a ring resonator and a curved waveguide, the curvature radius of the curved waveguide is as same as that of the ring resonator, the curved waveguide comprises an input end and an output end, a coupling area is spaced between the curved waveguide and the ring resonator, and the curvature radiuses and the coupling areas are in corresponding relations.

Description

technical field [0001] The invention relates to the field of photoelectric technology, in particular to a filtering structure applied to LEDs, an LED display screen and a method for obtaining light loss coefficients. Background technique [0002] Traditional LED (Light Emitting Diode, light-emitting diode), including ELC (Embedded LED Chip), SMDL (Surface Mounted Device LED), FCL (Flip-Chip LED), etc., but no matter what kind of LED, it shows that the light source is outputting The blue light component of the spectrum has a damaging effect on the retina, because too strong short-wave blue light can easily cause photochemical damage to the photoreceptor cells on the retina and degeneration of the pigment epithelial function, and too strong radiation can also cause thermal damage to the retina. [0003] The spectrum of LED is discontinuous, the wavelength is single, and the spectral energy of short wavelength is very high. Long-term exposure to strong light in one band will in...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a filtering structure applied to LEDs, LED display screens and methods for obtaining light loss coefficients, realize blue light filtering and phase matching technology of LED filtering structures, and solve problems caused by the single wavelength of LED light and The short-wavelength spectral energy is very high, which causes the technical problem of visual damage, and at the same time, solves the technical problem of optical loss between modes

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