Optical scanning system
First Claim
1. A scanning system for optical scanning of a scene in at least one dimension, including a multi-faceted reflective scanning rotor, optical beam converging means disposed in the beam path between the scene and the rotor for forming a primary image of the scene between the beam converging means and the rotor, a first substantially spherical mirror disposed in the beam path of the system between first and second areas of reflection on the rotor, both areas being disposed in a non-collimated beam path, a radiation detecting or emitting means disposed at the end of the beam path in the system, a beam converging optical element disposed in the beam path between the first substantially spherical mirror and the second area of reflection, and means for forming a real image of the radiation detecting or emitting means in the beam path at a position between the first substantially spherical mirror and a location so close to the beam converging optical element that the element serves as a field element for said location of said real image.
1 Assignment
0 Petitions
Accused Products
Abstract
A scanning system for optical scanning of a scene in at least one dimension has a multi-faceted reflective scanning rotor as the scanning element. In order to have a high scanning efficiency a so-called facet-tracing is provided such that the beam path is reflected by first and second areas of reflection on the rotor, both areas being disposed in a non-collimated beam path. An optical beam converging means is disposed in the beam path between the scene and the rotor for forming a primary image of the scene between the beam converging means and the rotor. A substantially spherical mirror is disposed in the beam path of the system between the first and the second areas of reflection. A radiation detector is disposed at the end of the beam path. A beam converging optical element, such as a positive lens or a substantially spherical mirror, is disposed in the beam path between the first substantially spherical mirror and the second area of reflection. Means are provided to form a real image of the radiation detector in the beam path at a position between the first substantially spherical mirror and a location so close to the beam converging optical element that the element serves as a field element for this location of the real image.
51 Citations
18 Claims
- 1. A scanning system for optical scanning of a scene in at least one dimension, including a multi-faceted reflective scanning rotor, optical beam converging means disposed in the beam path between the scene and the rotor for forming a primary image of the scene between the beam converging means and the rotor, a first substantially spherical mirror disposed in the beam path of the system between first and second areas of reflection on the rotor, both areas being disposed in a non-collimated beam path, a radiation detecting or emitting means disposed at the end of the beam path in the system, a beam converging optical element disposed in the beam path between the first substantially spherical mirror and the second area of reflection, and means for forming a real image of the radiation detecting or emitting means in the beam path at a position between the first substantially spherical mirror and a location so close to the beam converging optical element that the element serves as a field element for said location of said real image.
Specification