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. 15, 1977
Filed:
Jan. 07, 1975
Philip J Hart, Palo Alto, CA (US);
Other;
Abstract
Non-distorting mirrors are disclosed that are each curved in at least one plane and positioned relative to an observer in accordance with a mathematical relation by which the observer is presented with a virtual image of a selected field of view of the surroundings, the virtual image having a specified angular magnification or demagnification without angular distortion in the aforementioned plane. Such a mirror may be designed to have a value of angular demagnification for which a wide field of view of the surroundings is compressed within the narrower angular limits of the mirror relative to the observer and may be employed as a rear- or side-view mirror for an automobile, aircraft, or other vehicle. This mirror may be employed in addition to or in combination with a conventional plane rear- or side-view mirror.