Filter structure applied to LED, LED display screen and method for obtaining light loss coefficient

Abstract

The embodiment of the present invention discloses a filtering structure applied to LEDs, an LED display screen and a method for obtaining light loss coefficients, realizes the technology of blue light filtering and phase matching in the filtering structure of LEDs, and solves the problem of 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. The filter structure of the embodiment of the present invention includes: a ring resonator and a curved waveguide, the radius of curvature of the curved waveguide is consistent with the radius of curvature of the ring resonator, the curved waveguide includes an input end and an output end, the curved waveguide and the ring resonator There are coupling areas at intervals, wherein the radius of curvature has a corresponding relationship with the coupling areas.

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 (LightEmittingDiode, light emitting diode), including ELC (EmbeddedLEDChip), SMDL (SurfaceMountedDeviceLED), FCL (Flip-ChipLED), etc., but no matter what kind of LED, it shows that the blue light component of the output spectrum of the light source is harmful to the retina. It has a damaging effect, because too strong short-wave blue light can easily cause photochemical damage to photoreceptor cells on the retina and degeneration of 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 inevita...

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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