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US-12626644-B2 - Display lighting systems with bioactive lighting

US12626644B2US 12626644 B2US12626644 B2US 12626644B2US-12626644-B2

Abstract

Bioactive display systems for displaying digital content. The display systems have one or more LED-based lighting channels adapted to generate one or more of a long red near infrared (LRNE) red light, a circadian-inducing blue light output in first operational mode and a less-circadian-inducing blue light output in a second operational mode. The bioactive lighting can have a first circadian-stimulating energy characteristic related to the associated first spectral power distributions of light generated in the first operational mode, and the non-circadian-inducing blue light can have a second circadian-stimulating energy characteristic related to the associated second spectral power distribution of light generated in the second operational mode. Disclosure methods of generating digital display content with the display systems described herein. The methods can generate a circadian-inducing blue light output in first operational mode and one of a LRNE output and a less-circadian-inducing blue light output in a second operational mode.

Inventors

  • Raghuram L. V. Petluri
  • Paul Kenneth Pickard
  • Benjamin Harrison

Assignees

  • KORRUS, INC.

Dates

Publication Date
20260512
Application Date
20240826

Claims (7)

  1. 1 . A display system comprising: one or more LED-based lighting channels adapted to emit light in different modes, a first mode in which a relatively high circadian-stimulating energy (CSE) light is emitted, output a second mode in which a relatively low CSE light is emitted, a third mode in which long red near infrared energy (LRNE) light is emitted, a controller configured to control said one or more LED-based lighting channels in any combination of said first, second, and third modes, wherein in said third mode, said LRNE light is pulsed.
  2. 2 . The display of claim 1 , wherein said controller is configured to pulse said LRNE light at certain frequency.
  3. 3 . The display of claim 2 , wherein said certain frequency comprises micro-pulses of less than a tenth of a second.
  4. 4 . The display of claim 3 , wherein said micro-pulses have a duration of less than 100 ms, with a frequency between 10 Hz and 0.5 mHz.
  5. 5 . The display of claim 1 , wherein said controller is configured to pulse said relatively high CSE at certain frequency.
  6. 6 . The display of claim 5 , wherein said certain frequency comprises micro-pulses of less than a tenth of a second.
  7. 7 . The display of claim 6 , wherein said micro-pulses have a duration of less than 100 ms, with a frequency between 10 Hz and 0.5 mHz.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation-in-part of U.S. application Ser. No. 17/316,398, filed May 10, 2021, which is a continuation of PCT/US2019/060640, filed Nov. 8, 2019, which claims the benefit of U.S. patent application Ser. No. 16/393,660 filed Apr. 24, 2019, which is a Continuation of International Patent Application No. PCT/US2019/013380 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/758,411 filed Nov. 9, 2018; International Patent Application No. PCT/US2019/013359 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/757,672 filed Nov. 8, 2018; International Patent Application No. PCT/US2019/013356 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/757,664 filed Nov. 8, 2018; International Patent Application No. PCT/US2019/013379 filed Jan. 11, 2019, which claims the benefit of U.S. Provisional Patent Application No. 62/758,447 filed Nov. 9, 2018; and U.S. Provisional Patent Application No. 62/885,162 filed Aug. 9, 2019, the entire contents of which are incorporated by reference as if fully set forth herein. FIELD OF THE DISCLOSURE This disclosure is in the field bioactive digital display devices. In particular, the disclosure relates to devices for use in, and methods of, providing bioactive lighting systems for use in bioactive display systems that can provide controllable biological effects. BACKGROUND A wide variety of light emitting devices are known in the art including, for example, incandescent light bulbs, fluorescent lights, and semiconductor light emitting devices such as light emitting diodes (“LEDs”). Displays for digital content can rely on arrays of pixels that produce individual color points. Displays can be backlit with a white light source, which can be LED-based, and then filtered at the pixel-level to produce colored pixels as desired. Alternatively, displays that are not based on backlighting with white light and filtering downstream can include LEDs at the pixel-level that directly emit light at each colored pixel. There are a variety of resources utilized to describe the light produced from a light emitting device, one commonly used resource is 1931 CIE (Commission Internationale de l'Éclairage) Chromaticity Diagram. The 1931 CIE Chromaticity Diagram maps out the human color perception in terms of two CIE parameters x and y. The spectral colors are distributed around the edge of the outlined space, which includes all of the hues perceived by the human eye. The boundary line represents maximum saturation for the spectral colors, and the interior portion represents less saturated colors including white light. The diagram also depicts the Planckian locus, also referred to as the black body locus (BBL), with correlated color temperatures, which represents the chromaticity coordinates (i.e., color points) that correspond to radiation from a black-body at different temperatures. Illuminants that produce light on or near the BBL can thus be described in terms of their correlated color temperatures (CCT). These illuminants yield pleasing “white light” to human observers, with general illumination typically utilizing CCT values between 1,800K and 10,000K. Color rendering index (CRI) is described as an indication of the vibrancy of the color of light being produced by a light source. In practical terms, the CRI is a relative measure of the shift in surface color of an object when lit by a particular lamp as compared to a reference light source, typically either a black-body radiator or the daylight spectrum. The higher the CRI value for a particular light source, the better that the light source renders the colors of various objects it is used to illuminate. Color rendering performance may be characterized via standard metrics known in the art. Fidelity Index (Rf) and the Gamut Index (Rg) can be calculated based on the color rendition of a light source for 99 color evaluation samples (“CES”). The 99 CES provide uniform color space coverage, are intended to be spectral sensitivity neutral, and provide color samples that correspond to a variety of real objects. Rf values range from 0 to 100 and indicate the fidelity with which a light source renders colors as compared with a reference illuminant. In practical terms, the Rf is a relative measure of the shift in surface color of an object when lit by a particular lamp as compared to a reference light source, typically either a black-body radiator or the daylight spectrum. The higher the Rf value for a particular light source, the better that the light source renders the colors of various objects it is used to illuminate. The Gamut Index Rg evaluates how well a light source saturates or desaturates the 99 CES compared to the reference source. LEDs have the potential to exhibit very high power efficiencies relative to conventional incandescent or fluorescent lights. Most LEDs are sub