Glazing with embedded microstructures for daylighting and seasonal thermal control

Patent metadata

Field	Value
Publication number	US-9695629-B2
Application number	US-201314420163-A
Country	US
Kind code	B2
Filing date	Aug 7, 2013
Priority date	Aug 7, 2012
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A glazing for daylighting and seasonal thermal control, the glazing including a pane defined between an outside-oriented interface and an inside-oriented interface, the pane comprising a first component and a second component, wherein the first component has a parabolic reflective surface with a focus point located on the second component.

First claim

The invention claimed is:

1. Glazing for daylighting and seasonal thermal control, said glazing including a pane defined between an outside-oriented interface and an inside-oriented interface, the pane comprising:
a first component; fixedly embedded within the pane; and
a second component fixedly attached to the pane,
wherein the first component includes a parabolic reflective surface with a focus point located on the second component, and
wherein the pane is formed of a solid material.

2. Glazing according to claim 1 wherein the second component is made of a material which absorbs electromagnetic radiation.

3. Glazing according to claim 2 wherein the second component is adapted to convert the radiation to at least one of thermal and electrical energy.

4. Glazing according to claim 1 wherein the second component is made of a material which reflects electromagnetic radiation.

5. Glazing according to claim 4 wherein the second component partly reflects electromagnetic radiation.

6. Glazing according to claim 4 wherein the second component reflects at least one of an infrared and ultraviolet radiation but transmits visible light.

7. Glazing according to claim 1 wherein the second component is flat.

8. Glazing according to claim 1 wherein the second component is arranged at the inside-oriented interface.

9. Glazing according to claim 1 wherein the first and second components are arranged to both reflect a sun electromagnetic radiation in summer when an incoming angle of the sun electromagnetic radiation is relatively high.

10. Glazing according to claim 9 wherein the components are arranged to minimize the reflection on the second components in winter, when the incoming angle is relatively low.

11. Glazing according to claim 1 comprising several first and second components.

12. Glazing according to claim 1 , wherein the second component reflects incoming electromagnetic radiation.

13. Glazing according to claim 1 , wherein the first component has a reflective upper and lower surface.

14. Glazing according to claim 1 , wherein the focus point of the parabolic reflective surface is located on the second component for a predetermined range of incoming angles of electromagnetic radiation, the incoming angles defined by an angle between a direction of the incoming electromagnetic radiation and a normal to the outside-oriented interface.

15. Glazing according to claim 14 , wherein the predetermined range of incoming angles of incident electromagnetic radiation is between 50° and 70°.

16. Glazing according to claim 1 , wherein a curvature of the parabolic reflective surface is based on a distance between the parabolic reflective surface and the focus point.

17. Glazing according to claim 16 , wherein a strength of the curvature of the parabolic reflective surface is directly proportional to the distance between the parabolic reflective surface and the focus point.

Assignees

• Ecole Polytechnique Fed De Lausanne (Epfl)

Inventors

• Kostro André
• Schüler Andreas

Classifications

• F21S11/007

  characterised by the means for transmitting light into the interior of a building · CPC title

• Y02E10/52

  PV systems with concentrators · CPC title

• F24S23/74

  with trough-shaped or cylindro-parabolic reflective surfaces · CPC title

• E06B2009/2417

  Light path control; means to control reflection · CPC title

• F24S20/25

  using direct solar radiation in combination with concentrated radiation · CPC title