Optoelectronic sensor and method for detecting an object
AssigneeSick AG
InventorsRoger BUSER, Oliver OSTOJIC
Life of this patent
Estimating the term…
Abstract
An optoelectronic sensor for detecting an object in a monitored zone is provided having a light transmitter for transmitting transmitted light of a wavelength range; having a light receiver for producing a received signal from the transmitted light remitted at the object; having a reception optics that is arranged upstream of the light receiver and that has an optical filter adapted to the wavelength range for suppressing extraneous light; and having a control and evaluation unit that is configured to produce a piece of object information from the received signal, An adjustment device for changing the angle of incidence of the remitted transmitted light on the optical filter is provided here.
Claims18
An optoelectronic sensor for detecting an object in a monitored zone, the optoelectronic sensor comprising:
- a light transmitter for transmitting transmitted light of a wavelength range;
- a light receiver for producing a received signal from the transmitted light remitted at the object;
- a reception optics that is arranged upstream of the light receiver and that has an optical filter adapted to the wavelength range for suppressing extraneous light;
- a control and evaluation unit that is configured to produce a piece of object information from the received signal;
- and
- an adjustment device for changing the angle of incidence of the remitted transmitted light on the optical filter.
A method of detecting an object in a monitored zone, in which method:
- transmitted light is transmitted in a wavelength range,
- is received again after remission at the object as remitted transmitted light by a reception optics, and
- is converted into a received signal to produce a piece of object information from the received signal, wherein the reception optics suppresses extraneous light by an optical filter adapted to the wavelength range, and the angle of incidence of the remitted transmitted light on the optical filter is set to adapt a pass band of the optical filter to the wavelength range.
Dependencies are inferred from the claim text.