Camera and method for detecting objects moved through a detection zone
AssigneeSick AG
InventorsRomain Müller, Dirk Strohmeier
Life of this patent
Estimating the term…
Abstract
A camera (10) is provided for the detection of objects (48) moved through a detection zone that has an image sensor (18) for recording image data, a reception optics (16) having an adjustable diaphragm (17), and a control and evaluation unit (38) to read the image data and to set the diaphragm (17), In this respect, the control and evaluation unit (38) is furthermore configured to set the diaphragm (17) per object (48) such that the object (48) is recorded in a depth of field range.
Claims17
A camera for the detection of objects moved through a detection zone, the camera comprising:
- an image sensor for recording image data;
- reception optics having an adjustable diaphragm, the reception optics having a fixed focal position;
- a distance sensor for measuring a distance value from an object;
- and
- a control and evaluation unit to read the image data and to set the diaphragm,
- wherein the control and evaluation unit is configured to set the diaphragm per object dependent on the distance value measured from the object such that the object is recorded in a required depth of field range.
A method of detecting objects moved through a detection zone comprising:
- recording image data with an image sensor through reception optics having an adjustable diaphragm, wherein the reception optics have a fixed focal position;
- reading the image data;
- measuring a distance value from an object;
- and
- setting the diaphragm per object dependent on the distance value measured from the object such that the object is recorded in a required depth of field range.
A camera for the detection of objects moved through a detection zone, the camera comprising:
- an image sensor for recording image data;
- reception optics having an adjustable diaphragm;
- a distance sensor measuring a distance value from an object;
- and
- a control and evaluation unit to read the image data and to set the diaphragm,
- wherein the control and evaluation unit is configured to set the diaphragm per object such that the object is recorded in a depth of field range, and
- wherein the control and evaluation unit is further configured for a teaching process in which an object is arranged at a distance, image data are recorded, an image distinction is checked, and the diaphragm is adjusted until a suitable diaphragm setting for this distance has been found.
Dependencies are inferred from the claim text.