Multi-directional surface illuminator
First Claim
1. A multi-directional surface illuminator, comprisinga housing,means mounted in a bore in said housing to project therethrough the image of an object located in a predetermined position beyond one end of said housing,a plurality of light sources arrayed around the outside of said housing,reflective means interposed between said sources and said housing and registering with said sources to reflect light therefrom away from said housing, anda condenser lens extending transversely of said housing bore with one side thereof confronting on said reflective means to receive therefrom light reflected from said sources, and with the other side thereof facing said predetermined position to focus light from said reflective means obliquely onto an object located in said predetermined position.
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Accused Products
Abstract
An annular Fresnel lens surrounds a tubular barrel or sleeve containing an objective lens system, which is focussed on an object that is positioned a predetermined distance beyond one end of the barrel. Four independently operable light sources are arranged in equi-angularly spaced relation around the outside of the lens barrel to direct light onto each of four mirrors, which are mounted in intersecting planes around the outside of the lens barrel to reflect light in four quadrants onto the side of the Fresnel lens remote from said object. The Fresnel lens focuses light from the mirrors obliquely onto the object, an image of which is thus projected by the objective lens through the lens barrel toward, for example, a video sensor, which forms part of a video inspection machine.
28 Citations
17 Claims
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1. A multi-directional surface illuminator, comprising
a housing, means mounted in a bore in said housing to project therethrough the image of an object located in a predetermined position beyond one end of said housing, a plurality of light sources arrayed around the outside of said housing, reflective means interposed between said sources and said housing and registering with said sources to reflect light therefrom away from said housing, and a condenser lens extending transversely of said housing bore with one side thereof confronting on said reflective means to receive therefrom light reflected from said sources, and with the other side thereof facing said predetermined position to focus light from said reflective means obliquely onto an object located in said predetermined position.
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13. A multi-directional surface illuminator, comprising
a sleeve containing an objective lens for projecting through the sleeve the image of an object located in a predetermined position beyond one end of said sleeve, an annular condenser lens surrounding said sleeve coaxially thereof and having one side thereof facing in the direction of said predetermined position, and means including a plurality of independently operable light sources for directing light onto the opposite side of said condenser lens, said means further including a plurality of reflective surfaces arrayed around the outside of said sleeve adjacent said opposite side of said condenser lens and positioned to reflect light from said sources obliquely onto said opposite side of said condenser lens to be focused thereby obliquely onto an object lcoated in said predetermined position.
Specification