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1. WO2020117612 - LIGHT REFLECTION

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[ EN ]

CLAIMS

1. A device, comprising:

a light source; and,

a swept wavy-petal reflector positioned relative to the light source to cast light from the light source across an angular range including radial cross-sections within the angular range.

2. The device of claim 1, wherein the light source comprises a light-emitting diode (LED) or multiple LEDs, and wherein the light is visible light, IR light, and/or IR light and visible light.

3. The device of claim 1, wherein the swept wavy-petal reflector comprises a concave portion and a convex portion separated by an inflection point.

4. The device of claim 1, wherein the angular range is 360 degrees or wherein the angular range is less than 360 degrees.

5. The device of claim 1, wherein the device is a tabletop video conferencing device and the angular range comprises a field of illumination that includes a horizontal distribution pattern and the radial cross-sections are vertical distribution patterns of the range extending angularly outward from the tabletop video conferencing device.

6. The device of claim 1, wherein the light source and the swept wavy-petal reflector comprise an arcuate light-emitting assembly.

7. The device of claim 6, further comprising a light-sensing assembly configured to sense light reflected back toward the device from objects in the angular range.

8. The device of claim 7, wherein the light-sensing assembly is positioned between the arcuate light-emitting assembly and another arcuate light-emitting assembly.

9. The device of claim 8, wherein the light from the arcuate light-emitting assembly and the another arcuate light-emitting assembly angularly overlaps in front of the light-sensing assembly.

10. The device of claim 9, further comprising a diffuser positioned over the arcuate light-emitting assembly and the another arcuate light-emitting assembly.

11. The device of claim 10, wherein the diffuser comprises a lenticular.

12. A device, comprising:

a light source; and,

a swept wavy-petal reflector extending along an arc and oriented in light receiving relation relative to the light source, the swept wavy-petal reflector having a cross- sectional reflector profile taken transverse to the arc that includes a first portion having a swept profile that transitions to a second portion having a reverse swept profile.

13. The device of claim 12, wherein the light source comprises multiple light sources arranged generally along another arc.

14. The device of claim 13, wherein the multiple light sources are dithered along the another arc.

15. The device of claim 12, wherein the cross-sectional reflector profile of the reflector creates an upward bias angle on light reflected from the light source.