The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2019
Filed:
Mar. 09, 2018
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Matthew Brand, Newton, MA (US);
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
An optic to transform incident light emitted by a light source to form an irradiation pattern on a projection surface has a freeform surface formed by a union of an aspheric lens and a collection of Cartesian ovals. Each Cartesian oval is a lens focusing the incident light to a point and the collection of Cartesian ovals directs the incident light to a collection of points forming a border of the irradiation pattern. The aspheric lens is a portion of a refractive lens directing the incident light to form an interior of the irradiation pattern. The aspheric lens is combined with the collection of Cartesian ovals to form the union, such that each Cartesian oval shares a radiant focus of the refractive lens and makes a tangential contact with the surface of the aspheric lens at a single point.