Blocking element of short wavelengths in LED-type light sources
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%.
1 . 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.
2 . The device of claim 1 , wherein the plurality of factors further comprises a second 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.
3 . The device of claim 1 , wherein the selected value comprises a sum of a plurality of values representing respective reductions of the intensity of light emission of the LED display within the predetermined light spectrum.
4 . The device of claim 1 , wherein the selected value is between a minimum reduction and a maximum reduction of the intensity of light emission of the LED display within the predetermined light spectrum.
5 . The device of claim 1 , wherein the intensity of light emission of the LED display within the predetermined light spectrum is reduced in less than the entire LED display.
6 . The device of claim 1 , wherein the reduction of the intensity of the LED display within the predetermined light spectrum is temporarily progressive depending on an exposure time of the user and a time of a day.
7 . The device of claim 1 , wherein the instructions further comprise instructions executable by the processor to:
detect a background of an electronic document viewed by the user of the electronic device, and
switch the background of the electronic document viewed by the user to a background with a reduced emission in the predetermined light spectrum.
8 . The device of claim 1 , wherein the selected value comprises a maximum percent of reduction and a minimum percent of reduction for light emission of the LED display within the predetermined light spectrum.
9 . The device of claim 8 , wherein the percent reduction is performed between the selected maximum percent of reduction and selected minimum percent of reduction.
10 . The device of claim 1 , wherein the condition of ambient lighting is selected form the group consisting of photopic, mesopic, and scotopic.
11 . 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.
12 . The method of claim 11 , wherein the one or more factors further comprise a second 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.
13 . The method of claim 11 , wherein the selected value comprises a sum of a plurality of values representing respective reductions of the intensity of light emission of the LED display within the predetermined light spectrum.
14 . The method of claim 11 , wherein the selected value is between a minimum reduction and a maximum reduction of the intensity of light emission of the LED display within the predetermined light spectrum.
15 . The method of claim 11 , wherein the intensity of light emission of the LED display within the predetermined light spectrum is reduced in less than the entire LED display.
16 . The method of claim 11 , wherein the reduction of the intensity of the LED display within the predetermined light spectrum is temporarily progressive depending on an exposure time of the user and a time of a day.
17 . The method of claim 11 , further comprising:
detecting a background of an electronic document viewed by the user of the electronic device, and
switching the background of the electronic document viewed by the user to a background with a reduced emission in the predetermined light spectrum.
18 . The method of claim 11 , wherein the selected value comprises a maximum percent of reduction and a minimum percent of reduction for light emission of the LED display within the predetermined light spectrum.
19 . The method of claim 18 , wherein the percent reduction is performed between the selected maximum percent of reduction and selected minimum percent of reduction.
20 . The method of claim 11 , wherein the condition of ambient lighting is selected from the group consisting of photopic, mesopic, and scotopic.