US 12,070,617 B2
Light source for eye therapy and light emitting device having the same
A Young Lee, Ansan-si (KR); and Yeong Min Yoon, Ansan-si (KR)
Assigned to Seoul Viosys Co., Ltd., Ansan-si (KR)
Filed by Seoul Viosys Co., Ltd., Ansan-si (KR)
Filed on Jan. 3, 2022, as Appl. No. 17/567,822.
Application 17/567,822 is a continuation of application No. 16/394,850, filed on Apr. 25, 2019, granted, now 11,213,693.
Claims priority of provisional application 62/663,983, filed on Apr. 27, 2018.
Prior Publication US 2022/0233878 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 5/06 (2006.01)
CPC A61N 5/0613 (2013.01) [A61N 2005/0648 (2013.01); A61N 2005/0651 (2013.01); A61N 2005/0663 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light source, comprising:
a first light emitter configured to emit a first light having a wavelength range from 380 nm to 780 nm and having a spectrum including an area that overlaps at least 55% of a normalized solar spectrum;
a second light emitter configured to emit a second light having a higher color temperature than that of the first light; and
a controller configured to control the first and second light emitters, wherein:
a valley wavelength of the first light has a deviation equal to or less than 0.15 from the normalized solar spectrum in a wavelength range from 460 nm to 490 nm;
the controller is further configured to adjust a color temperature range of light emitted from the first and second light emitters; and
in the color temperature range of 2600K to 4000K, a deviation of a peak wavelength in a wavelength range from 380 nm to 490 nm of the light having a higher color temperature is configured to be greater than a deviation of a peak wavelength in a wavelength range from 380 nm to 490 nm of the light having a lower color temperature.
 
9. A light source, comprising:
a first light emitter configured to emit a first light having a first color temperature in a range of 2600K to 7000K;
a second light emitter configured to emit a second light having a higher color temperature than of the first light; and
a controller configured to control the first and second light emitters, wherein:
a peak wavelength of the first light has a first deviation equal to or less than 0.14 from a normalized solar spectrum in a wavelength range from 380 nm to 490 nm;
a valley wavelength of the second light has a second deviation from the normalized solar spectrum in the wavelength range from 380 nm to 490 nm, the second deviation being equal to or greater than the first deviation;
the controller is further configured to adjust a color temperature range of light emitted from the first and second light emitters; and
in the color temperature range of 2600K to 4000K, a deviation of a peak wavelength in a wavelength range from 380 nm to 490 nm of the light having a higher color temperature is configured to be greater than a deviation of a peak wavelength in the wavelength range from 380 nm to 490 nm of the light having a lower color temperature.
 
17. A light device for eye wellness, comprising:
a first light source configured to emit light having a first wavelength range from 380 nm to 780 nm; and
a control unit configured to adjust an amount of the light emitted from the first light source in response to a current location information, wherein:
a peak wavelength of the light has a first deviation equal to or less than 0.14 from a normalized solar spectrum in a wavelength range from 380 nm to 490 nm;
a color temperature of the light emitted from the first light source is in a range of 2600K to 6500K; and
in the color temperature range of 2600K to 4000K, a deviation of a peak wavelength in a wavelength range from 380 nm to 490 nm of the light having a higher color temperature is configured to be greater than a deviation of a peak wavelength in a wavelength range from 380 nm to 490 nm of the light having a lower color temperature.