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Element for blocking short wavelengths in LED-type light sources

A blocking element, short-wavelength technology, applied in the field of optics

Active Publication Date: 2015-08-05
UNIV COMPLUTENSE DE MADRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the Behar-Cohen document, it is known what types of damage the human eye can suffer, however in the conclusion of this document the most obvious way is used: the way is to limit the use of this type of screen and to force the manufacture in a general way quotient limits the emission of the display to a specific range

Method used

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  • Element for blocking short wavelengths in LED-type light sources
  • Element for blocking short wavelengths in LED-type light sources
  • Element for blocking short wavelengths in LED-type light sources

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Embodiment Construction

[0055] In the prior art, the degree of toxicity of short wavelengths produced by LED light of different spectral composition due to the use of electronic devices equipped with this type of display (LED) on retinal pigment epithelium has not been described.

[0056] The following are the specific goals of toxicity testing and the solutions offered:

[0057] - In vitro study of cellular activity of retinal tissue following exposure to different LEDs emitting radiation of different spectral composition, e.g. Figure 4 shown.

[0058] - In vitro assessment of DNA damage in retinal tissue after exposure to different LEDs emitting radiation of different spectral composition, such as Figure 5 shown.

[0059] - Determination of apoptosis in retinal tissue in vitro after exposure to different LEDs emitting radiation of different spectral composition, as Figure 6 shown.

[0060] The solutions proposed in the present invention were evaluated based on the assessment and determinatio...

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Abstract

The invention relates to a method, device (100) and system (200) for the detection and quantification of variation in eye damage caused by blue and violet light in the visible spectrum, comprising steps of: detecting incident radiation on an individual's visual system; calculating the incident radiation inside the range from 380 to 500 nm; establishing at least one threshold for incident radiation within said range; detecting if at least one threshold established for this range has been exceeded; warning of the exceedance of at least one threshold; measuring the time of exposure to the incident radiation; and inferring the effect of the incident radiation in the individual's different eye structures, and warning of said effect.

Description

technical field [0001] The present invention belongs to the field of optics in general and relates in particular to short-wavelength blocking elements in LED-type light sources (Light Emitting Diodes). Background technique [0002] The electromagnetic spectrum (EME, electromagnetic spectrum) is the energy distribution of the entire electromagnetic wave emitted by a substance (emission spectrum) or absorbed by a substance (absorption spectrum). EME includes a wide range of radiation from lower wavelength radiation (eg, gamma rays and X-rays), through ultraviolet radiation, visible light, and infrared, to electromagnetic waves with longer wavelengths (eg, radio waves). [0003] The visible spectrum is the region of the electromagnetic spectrum that the human eye can perceive. Electromagnetic radiation in this wavelength range is also referred to as "visible" light or simply light. There is no specific limitation in the visible spectrum; the typical human eye responds to wave...

Claims

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Application Information

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IPC IPC(8): H01L33/00G02B5/23G01J9/00G09F9/33
CPCG02B5/23H01L33/44G01J9/00G09F9/33H01L33/005H04N23/84G02B19/0066G02B5/201G02B5/223G01J1/0219G01J1/0233G01J1/4204G01J1/429A61B5/1118A61B5/68G09G2320/08G09G2320/06A61F2002/16965G09F9/335G02B5/22H04N9/64
Inventor 希丽亚·桑切斯拉莫斯
Owner UNIV COMPLUTENSE DE MADRID
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