Optical article for illuminating building interiors

Patent metadata

Field	Value
Publication number	US-11067240-B2
Application number	US-201715687471-A
Country	US
Kind code	B2
Filing date	Aug 26, 2017
Priority date	Aug 21, 2012
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

An optical article for illuminating building interiors including a reflective grid and a light diffusing element positioned between the reflective grid and a light source. The reflective grid includes one or more arrays of transverse reflective surfaces and is configured to partially transmit and partially redirect incident light over a broad angular range.

First claim

What is claimed is:

1. An optical article for illuminating building interiors, comprising:
a reflective grid panel having a plurality of opaque reflective surfaces extending transversely with respect to said reflective grid panel;
an LED light source illuminating said reflective grid panel;
a curved diffuser disposed between said light source and said reflective grid panel;
a pair of reflective side walls flanking a space between said reflective grid panel and said curved diffuser;
wherein the sheet of a light diffusing material is approximately coextensive with the reflective grid, wherein said reflective grid panel is configured to transmit at least a first portion of light emitted by the LED light source through spaces between adjacent pair of said reflective surfaces without redirection and redirect at least a second portion of the light towards one or more directions that are not coincident with the original propagation direction.

2. An optical article as recited in claim 1 , wherein said reflective grid panel is configured to be retained in a horizontal position and illuminated by said light source from the above.

3. An optical article as recited in claim 1 , wherein said diffuser has a round shape in a cross-section.

4. An optical article as recited in claim 1 , wherein at least a portion of said diffuser has a cross-sectional shape that can be approximated by a cross-section of a dome.

5. An optical article as recited in claim 1 , wherein at least one of said reflective surfaces is metallized for specular reflectivity.

6. An optical article as recited in claim 1 , wherein at least one of said reflective surfaces is configured for diffuse reflectance.

7. An optical article as recited in claim 1 , wherein said plurality of opaque reflective surfaces are arranged into two perpendicular arrays and form a plurality of hollow light channeling cells.

8. An optical article as recited in claim 1 , wherein said reflective grid is formed by an egg crate louver panel.

9. An optical article as recited in claim 1 , further comprising an optical element selected from the group of light filtering elements, light rejecting elements, polarizing elements, fluorescent elements, color inks or dyes, and light scattering elements.

Assignees

• Vasylyev Sergiy
• S V V Tech Innovations Inc

Inventors

• Vasylyev Sergiy

Classifications

• G02B19/0019

  having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) · CPC title

• F21V11/06

  using crossed laminae or strips {, e.g. grid-shaped louvers}; using lattices or honeycombs · CPC title

• B29D11/00

  Producing optical elements, e.g. lenses or prisms (grinding or polishing of optical elements B24B; constructional form of optical elements G02B; {optical parts of spectacles G02C7/00}) · CPC title

• F21S11/002 Primary

  characterised by the means for collecting or concentrating the sunlight, e.g. parabolic reflectors or Fresnel lenses · CPC title

• E06B2009/2417

  Light path control; means to control reflection · CPC title