Solar control panel

• US 4,487,197 A
• Filed: 04/23/1982
• Issued: 12/11/1984
• Est. Priority Date: 04/29/1981
• Status: Expired due to Fees

• Current Assignee: Glaverbel
• Original Assignee: Glaverbel
• Inventors: Hoyois, Jean-Claude
• Primary Examiner(s): Scott, Samuel
• Assistant Examiner(s): Kamen, Noah
• Application Number:
  US06/371,476
• Time in Patent Office: 963 Days
• Field of Search: 350/1.1, 350/1.6, 350/1.7, 350/261, 428/433, 428/434, 126/450, 126/901
• US Class Current: 359/360
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3649 made of metals other than silver
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 17/3681 the multilayer coating being used in glazing, e.g. windows or windscreens
• CPC Class Codes: C03C 2218/365 Coating different sides of a glass substrate
• CPC Class Codes: E06B 3/6715 specially adapted for increased thermal insulation or for controlled passage of light E06B3/66323 takes precedence; coating of glass pains C03C17/00; devices or arrangements for controlling the intensity, colour, phase, polarisation or direction of light G02F1/00
• CPC Class Codes: Y10S 126/908 Particular chemical

Abstract

A glazing panel for transmitting radiant energy including visible light energy which includes first and second glass sheets supported in spaced relation. The first glass sheet has an oxide coated surface which defines an exterior surface of the panel and a gold coating on the surface which faces the second glass sheet.

Claims

1. A glazing panel for transmitting radiant energy including visible light energy, comprising:

first and second clear glass sheets;

support means positioning said glass sheets in parallel spaced relation, such that one surface of said first glass sheet defines an exterior surface of said panel;

a first coating on said one surface of said first glass sheet for providing solar shading, said first coating being an energy absorbing oxide coating; and

a second coating on the surface of said first sheet which faces said second sheet, said second coating being made of gold;

wherein said first glass sheet has a thickness of 4 mm, said second glass sheet has a thickness of 6 mm, said first coating consists of 62%, CoO, 26% Fe₂ O₃ and 12% Cr₂ O₃ and has a thickness between 35 and 45 nm, said second coating has a thickness of 14 nm and an emissivity of 0.09, said panel further comprises an undercoating of bismuth oxide located on said first glass sheet beneath said second coating, said undercoating being 1 nm thick, said first glass sheet and said first coating together having an absorption factor of 22.0%, and said panel having a luminous transmission factor of 20.6%, a total energy transmission factor of 18.7% and a color purity when viewed in reflection of 8%.

2. A glazing panel for transmitting radiant energy including visible light energy, comprising:

first and second clear glass sheets;

support means positioning said glass sheets in parallel spaced relation, such that one surface of said first glass sheet defines an exterior surface of said panel;

a first coating on said one surface of said first glass sheet for providing solar shading, said first coating being an energy absorbing oxide coating; and

a second coating on the surface of said first sheet which faces said second sheet, said second coating being made of gold;

wherein said first glass sheet has a thickness of 4 mm, said second glass sheet has a thickness of 8 mm, said first coating consists of 62% CoO, 26% Fe₂ O₃ and 12% Cr₂ O₃ and has a thickness of 35 to 45 nm, said second coating has a thickness between 11 and 12 nm and an emissivity of about 0.2, said panel further comprises an undercoating underlying said second coating, said undercoating is made of bismuth oxide and has a thickness between 1.5 and 2 nm, said first glass sheet and said second coating together have a luminous transmission factor of about 60%, and said panel has a luminous transmission factor of 24.1%, a total energy transmission factor of 23.3% when said first coating faces a radiant energy source, and a color purity when viewed in reflection of less than 3%.

3. A glazing panel for transmitting radiant energy including visible light energy, comprising:

first and second clear glass sheets;

support means positioning said glass sheets in parallel spaced relation, such that one surface of said first glass sheet defines an exterior surface of said panel;

a first coating on said one surface of said first glass sheet for providing solar shading, said first coating being an energy absorbing oxide coating; and

a second coating on the surface of said first sheet which faces said second sheet, said second coating being made of gold;

wherein said first glass sheet has a thickness of 6 mm, said second glass sheet has a thickness of 8 mm, said first coating consists of 62% CoO, 26% Fe₂ O₃ and 12% Cr₂ O₃ and has a thickness of 35 to 45 nm, said second coating has a thickness of 9 nm and an emissivity of about 0.25, said panel further comprises an undercoating of bismuth oxide underlying said second coating and having a thickness of 1.5 to 2 nm, said first glass sheet and said second coating together have a luminous transmission factor of 64%, and said panel has a luminous transmission factor of 26.3% and a total energy transmission factor of 26% when said first coating faces a radiant energy source.

4. A glazing panel for transmitting radiant energy including visible light energy, comprising:

first and second clear glass sheets;

support means positioning said glass sheets in parallel spaced relation, such that one surface of said first glass sheet defines an exterior surface of said panel;

a first coating on said one surface of said first glass sheet for providing solar shading, said first coating being an energy absorbing oxide coating;

a second coating on the surface of said first sheet which faces said second sheet, said second coating being made of gold; and

a light-transmitting layer overlying said second coating;

wherein each said glass sheet has a thickness of 6 mm, said first coating consists of 62% CoO, 26% Fe₂ O₃ and 12% Cr₂ O₃ and has a thickness of 35 to 45 nm, said second coating has a thickness of 11 nm, said light-transmitting layer overlying said second coating is a bismuth oxide layer having a thickness of 31 nm, said panel further comprises an undercoating underlying said second coating, said undercoating is made of bismuth oxide and has a thickness of 2 nm, and said panel has a luminous transmission factor of 28.3%, a total energy transmission factor of 29.2% when said first coating faces a radiant energy source, and a color purity when viewed in reflection of 4%.