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:
Oct. 08, 2002
Filed:
Mar. 01, 2001
Chungte W. Chen, Irvine, CA (US);
Ronald G. Hegg, Vista, CA (US);
William B. King, Rancho Palos Verdes, CA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A display device for a display wavelength range includes an image source, a relay group made of optical elements transparent to the display wavelength range, and a reflective combiner in facing relation to the relay group. The relay group includes a glass optical wedge, a glass lens, and a group of plastic lenses including a diffractive optical element. The group of plastic lenses is positioned between the glass optical wedge and the glass lens. The relay group has the optical wedge having a front face in facing relation to the image source, and a back face; an aspheric lens module having a front face in facing relation to the back face of the optical wedge, and a back face; and an aspheric lens having a front face in facing relation to the back face of the aspheric lens module, a back face, and an optical axis. The aspheric lens module is tilted and decentered with respect to the optical axis of the aspheric lens. The relay group further includes a diffractive-optical-element lens module having a front face in facing relation to the back face of the aspheric lens, and a back face; and a positive-power lens module having a front face in facing relation to the back face of the diffractive-optical-element lens module, and a back face.