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. 24, 1992
Filed:
Apr. 08, 1991
Jack V Miller, Sierra Madre, CA (US);
Ruth E Miller, Sierra Madre, CA (US);
Other;
Abstract
A fiber optics illuminator includes a source of illumination on an optical axis and an optical element coaxially disposed on the optical axis, forming an image of the illumination source at an image plane. A housing encloses the source of illumination, the optical element and the image plane. A thermal control bushing is disposed on the optical axis at an exit aperture in the housing and includes an elongated, generally cylindrical glass rod coaxially disposed on the optical axis, having a first end at the image plane of the optical element, receiving illumination and heat, and a second end external to the housing. The thermal control bushing includes a means for dissipating heat from the glass rod by radiation outside the housing and by convection aided by a ventilating fan. An elongated fiber optics light guide has a light receiving end coaxially disposed adjacent to the second end of the glass rod, and a remote light-emitting end. In a preferred embodiment the glass rod includes a series of conjugate refocus planes spaced from the image plane at its light receiving end, and has a length such that the illumination at its light emitting end is substantially out of focus adjacent to the fiber optics light guide.