Differential goniophotometer
AssigneeThe United States of America as represented by the Secretary of Commerce
InventorYuqin Zong
Life of this patent
Estimating the term…
Abstract
A differential goniophotometer includes: an integrating sphere including an interior bounded by an interior wall and that receives, in the interior, a primary light source that provides primary light; and a fisheye lens disposed in the interior of the integrating sphere in optical communication with the primary light source such that the fisheye lens: receives the primary light from the primary light source, and provides a curvilinear image of the interior of the integrating sphere and the primary light.
Claims18
A differential goniophotometer comprising:
- an integrating member comprising an interior bounded by an interior wall and that receives, in the interior, a primary light source that provides primary light;
- a fisheye lens disposed in the interior of the integrating member in optical communication with the primary light source such that the fisheye lens:
- receives the primary light from the primary light source, and
- provides a curvilinear image of the interior of the integrating member and the primary light;
- and
- the primary light source,
- wherein the primary light source is disposed in a center of the integrating member.
A differential goniophotometer comprising:
- an integrating member comprising an interior bounded by an interior wall and that receives, in the interior, a primary light source that provides primary light;
- a fisheye lens disposed in the interior of the integrating member in optical communication with the primary light source such that the fisheye lens:
- receives the primary light from the primary light source, and
- provides a curvilinear image of the interior of the integrating member and the primary light;
- and
- the primary light source,
- wherein the primary light source is interposed between a center of the integrating member and the interior wall.
A differential goniophotometer comprising:
- an integrating member comprising an interior bounded by an interior wall;
- a primary light source disposed in the interior of the integrating member and that provides primary light to the interior;
- a fisheye lens disposed in the interior of the integrating member in optical communication with the primary light source such that the fisheye lens:
- receives the primary light from the primary light source, and
- provides a curvilinear image of the interior of the integrating member and the primary light;
- an auxiliary light source disposed in the interior of the integrating member such that the auxiliary light source produces auxiliary light and comprises:
- a luminous surface to communicate the auxiliary light;
- and
- a light baffle interposed between the luminous surface and the fisheye lens;
- and
- a photometer comprising:
- a photodetector disposed on integrating member;
- and
- a light baffle disposed in a view of the photodetector.
Dependencies are inferred from the claim text.