# US 10,309,615 B2 · Light emissive display based on lightwave coupling in combination with visible light illuminated content > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,615 B2 - Document ID: US10309615B2 - Status: Granted - Kind: B2 - Application number: 15/015,436 - Filed: 2016-02-04 - Published: 2016-08-11 - Granted: 2019-06-04 - Earliest claimed: 2015-02-09 - Assignees: Sun Chemical Corporation - Applicants: Sun Chemical Corporation - Inventors: Erick Christopher Couch; Andrew Michael Bakaysza - Web page: https://patentgrep.com/patent/US10309615B2 ## CPC - F21V 9/08: for producing coloured light, e.g. monochromatic; for reducing intensity of light (with provision for controlling the colour F21V9/40) - F21V 23/0471: {the sensor detecting the proximity, the presence or the movement of an object or a person} - G02B 6/005: {provided by one optical element, or plurality thereof, placed on the light output side of the light guide} - G02B 6/006: {to produce indicia, symbols, texts or the like} - G02B 6/0076: {Stacked arrangements of multiple light guides of the same or different cross-sectional area} - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A display with a first emissive image and a second image. The display includes a waveguide that includes an image formed from photoluminescent dyes on a surface of the waveguide which is activated by a first light source. A second light source behind said waveguide produces a second image. A light filter is positioned between the waveguide and the second light source. The second light source can illuminate a transparency, such as a translight, or a physical object providing an image that is viewable from the display when the second light source is illuminated and the first light source is not illuminated. The first image is viewable when the first light source associated with the waveguide is activated, emitting, for example, an ultraviolet light that activates the photoluminescent dyes, causing the first image to be viewable. The light filter behind the waveguide enhances the quality of the emissive image and prevents the image on the transparency or the physical object from being seen when the second light source is not illuminated. ## Claims ### Claim 1 A display comprising: a waveguide, said waveguide comprising a medium with a photoluminescent image which is at least one of printed, coated or mounted thereon; a first light source associated with said waveguide, said first light source adapted to transmit light at a wavelength less than 450 nm through said waveguide, causing said photoluminescent image to emit visible light; a second light source; and a light filter positioned between said waveguide and at least one of a medium and a physical object; wherein said second light source is adapted, when illuminated, to make visible a second image through said light filter of said display, wherein the second image is at least one of provided on the medium or provided by the physical object. ### Claim 2 (depends on 1) The display claimed in claim 1 comprising a transparency, said transparency including said second image, and wherein said second light source is adapted to transmit light through said transparency to display said second image. ### Claim 3 (depends on 2) The display claimed in claim 2 wherein said second light source is an edge light source. ### Claim 4 (depends on 2) The display claimed in claim 2 wherein said second light source is a back light source. ### Claim 5 (depends on 2) The display claimed in claim 2 wherein said waveguide and transparency are non-rectangular. ### Claim 6 (depends on 2) The display claimed in claim 2 wherein said waveguide and transparency are non-planar. ### Claim 7 (depends on 1) The display claimed in claim 1 wherein said second light source illuminates a three-dimensional object, providing said second image viewable through said waveguide. ### Claim 8 (depends on 7) The display claimed in claim 7 wherein said waveguide is non-rectilinear. ### Claim 9 (depends on 1) The display claimed in claim 1 further comprising a switch configured to automatically activate said first light source and to deactivate said second light source. ### Claim 10 (depends on 9) The display claimed in claim 9 wherein said switch is activated by a motion sensor to activate said first light source so as to cause said photo luminescent image to emit visible light. ### Claim 11 (depends on 1) The display claimed in claim 1 wherein said first image is formed from photoluminescent dyes having a transparency at least 50%. ### Claim 12 (depends on 1) The display claimed in claim 1 wherein said light filter has a transmittance of less than 75%. ### Claim 13 (depends on 1) The display claimed in claim 1 wherein said light filter has a transmittance of at least 3.125%. ### Claim 14 (depends on 1) The display claimed in claim 1 wherein said light filter is a film directly connected to said waveguide. ### Claim 15 (depends on 1) The display claimed in claim 1 further comprising at least one additional waveguide with an additional photoluminescent image, wherein each additional image is activated by a separate additional light source. ### Claim 16 (depends on 1) The display claimed in claim 1 wherein said display is a display enclosure having a transparent surface and said waveguide is affixed to said surface, and wherein said second light source is inside said enclosure. ### Claim 17 (depends on 1) The display claimed in claim 1 wherein said photoluminescent image includes one of a plurality of primary-color luminescent inks configured to create full color spectrum images corresponding to a minimum Maxwell triangle of (0.3, 0.4) (0.4, 0.3) (0.3, 0.3) as depicted on a 1931 CIE Chromaticity diagram. ### Claim 18 (depends on 1) The display claimed in claim 1 wherein said display is a display enclosure having a transparent surface and said waveguide is affixed to said surface, and wherein said second light source is outside said enclosure. ### Claim 19 (depends on 1) The display claimed in claim 1 wherein said light filter is adapted to reduce visibility of said second image through said display when said second light source is not illuminated. ### Claim 20 (depends on 1) The display claimed in claim 1 wherein the display has a display face providing a view of displayed images, and further comprising: a film on which the second image is provided, wherein the waveguide is positioned between the film and the display face, and wherein the light filter is configured to reduce visibility at the display face of the second image when said second light source is not illuminated. ### Claim 21 (depends on 1) The display as claimed in claim 1 wherein the first light source is configured to illuminate with light in the 380-420 nm range. ### Claim 22 (depends on 1) The display as claimed in claim 1 wherein the medium comprises a transparency, and the second light source is configured to illuminate the transparency with white light. ### Claim 23 (depends on 1) The display as claimed in claim 1 further comprising control electronics configured: to illuminate the second light source until a sensor is activated, and in response to the sensor being activated, to energize in an alternating pattern the first light source and the second light source. ### Claim 24 A display having a display face providing a view of displayed images, the display comprising: a waveguide; and a photoluminescent image optically coupled to said waveguide; a first light source associated with said waveguide, said first light source adapted to transmit light through said waveguide, causing said photoluminescent image to emit visible light; a second light source adapted, when activated, to illuminate at least one of a medium and a physical object such that a second image is visible at the display face of the display, wherein the second image is at least one of provided on the medium or provided by the physical object; wherein the waveguide is positioned between the display face of the display and at least one of the medium or the physical object; and a light filter positioned between said waveguide and at least one of the medium or the physical object. ### Claim 25 (depends on 24) The display claimed in claim 24 wherein the first light source is configured to illuminate with light in the 380-420 nm range, and wherein the medium comprises a transparency, and the second light source is configured to illuminate the transparency with white light. ### Claim 26 (depends on 24) The display as claimed in claim 24 further comprising control electronics configured: to illuminate the second light source until a sensor is activated, and in response to the sensor being activated, to energize in an alternating pattern the first light source and the second light source. ### Claim 27 (depends on 24) The display claimed in claim 24 wherein said second light source is an edge light source, and wherein said second light source is a back light source. ### Claim 28 (depends on 24) The display claimed in claim 24 further comprising at least one additional waveguide with an additional photoluminescent image, wherein each additional image is illuminated by a separate additional light source. ### Claim 29 A display case comprising: a case configured to display a physical object; and a display comprising: a waveguide including a medium with a photoluminescent image which is at least one of printed, coated and mounted thereon; a first light source associated with said waveguide, said first light source configured to transmit light through said waveguide, causing said photoluminescent image to emit visible light; a second light source; and a light filter positioned between said waveguide and at least one of a medium or a physical object; wherein said second light source is positioned and configured, when illuminated, to make visible a second image through said light filter of said display, wherein the second image is at least one of provided on the medium or provided by the physical object. ### Claim 30 (depends on 29) The display as claimed in claim 29 further comprising control electronics configured: to illuminate the second light source until a sensor is activated, or to turn off both the first light source and the second light source until the sensor is activated, and in response to the sensor being activated, to energize in an alternating pattern the first light source and the second light source.