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US 12,625,309 B2Granted
Blocking element of short wavelengths in LED-type light sources
AssigneeUniversidad Complutense De Madrid
InventorCelia Sanchez Ramos
Life of this patent
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Abstract
Method, product and blocking element of short wavelengths in LED-type light sources consisting of a substrate with a pigment distributed on its surface and, in that said pigment has an optical density such that it allows the selective absorption of short wavelengths between 380 nm and 500 nm in a range between 1 and 99%.
Claims20
An electronic device comprising:
- a light-emitting diode (“LED”) display;
- at least one processor;
- and a memory storing instructions executable by the at least one processor to:
- determine, by detection or a user input, a plurality of factors selected from the group consisting of:
- a condition of ambient lighting during use of the electronic device;
- a total time a user is exposed to the LED display during use of the electronic device;
- an age of the user of the electronic device;
- a working distance between the user and the LED display;
- and
- a size of the LED display;
- for each of the selected plurality of factors, obtain, from the memory, a maximum absorbance value and a minimum absorbance value;
- sum the maximum absorbance values and the minimum absorbance values to obtain a total maximum absorbance value and a total minimum absorbance value based on the selected plurality of factors;
- select a value between the total maximum absorbance value and the total minimum absorbance value to represent an amount of reduction of light emission from the LED display within a predetermined light spectrum, wherein the predetermined light spectrum is less than an entire light spectrum of the LED display and includes 380 nm to 500 nm;
- reduce an intensity of the light emission of the LED display within the predetermined light spectrum by the selected value.
11 more elements
A method of reducing a predetermined light spectrum emitted by an electronic device with a light-emitting diode (LED) display, comprising steps of:
- determining, by detection or a user input, a plurality of factors selected from the group consisting of:
- a condition of ambient lighting during use of the electronic device;
- a total time a user is exposed to the LED display during use of the electronic device;
- an age of the user of the electronic device;
- a working distance between the user and the LED display;
- a size of the LED display;
- for each of the selected plurality obtaining a of a maximum absorbance value and a minimum absorbance value, summing the maximum absorbances values and the minimum absorbances values to obtain a total maximum absorbance value and a total minimum absorbance value based on the selected plurality of factors,
- selecting a value between the total maximum absorbance value and the total minimum absorbance value to representing an amount of reduction of light emission of from the LED display within a predetermined light spectrum, wherein the predetermined light spectrum is less than an entire light spectrum of the LED display and includes 380 nm to 500 nm;
- and
- reducing an intensity of the light emission of the LED display only within the predetermined light spectrum by the selected value.
7 more elements
Dependencies are inferred from the claim text.