Transmission device for an optical measurement apparatus for capturing objects, light signal redirection device, measurement apparatus and method for operating a transmission device

A light signal redirection device for a transmission device of an optical measurement apparatus for capturing objects in a monitoring region, the light signal redirection device comprising:

• at least one redirection region that acts on light signals of the transmission device in dependence on an angle of incidence of the light signals so as to change their direction,
• wherein an angle of incidence of the light signals upon the redirection region is set by pivoting the at least one redirection region to change an angle between the redirection region and the transmission device,
• wherein the at least one redirection region has at least one diffractive structure,
• wherein the light signal redirection device has three redirection regions with different direction-changing properties,
• wherein the three redirection regions include a first redirection region, a second redirection region, and a third redirection region,
• wherein the first redirection region is arranged in front of the second redirect region and the third redirection region with respect to a beam path of the light signals, and
• wherein the light signals incident upon the first redirection region are redirected, independently by the first redirection region, to the second redirection region and the third redirection region depending on a position of incidence upon the first redirection region.

An optical measurement apparatus for capturing objects in a monitoring region, comprising:

• at least one transmission device for transmitting light signals into the monitoring region;
• at least one receiving device with which light signals that have been reflected at objects present in the monitoring region are received;
• and
• at least one control and evaluation device with which the at least one transmission device and the at least one receiving device are controlled and with which light signals received are evaluated,
• wherein the at least one transmission device comprises:
• at least one transmitter light source for sending light signals,
• at least one light signal redirection device for redirecting the light signals into the monitoring region,
• wherein the at least one light signal redirection device has at least one redirection region that acts on the light signals in dependence on an angle of incidence of the light signals so as to change their direction, and
• at least one drive device with which an incidence of the light signals on the at least one redirection region is set,
• wherein the angle of incidence of the light signals upon the redirection region is set by pivoting the at least one redirection region to change an angle between the redirection region and the at least one transmitter light source,
• wherein the at least one redirection region of the at least one transmission device has at least one diffractive structure,
• wherein the at least one light signal redirection device has three redirection regions with different direction-changing properties,
• wherein the three redirection regions include a first redirection region, a second redirection region, and a third redirection region,
• wherein the first redirection region is arranged in front of the second redirect region and the third redirection region with respect to a beam path of the light signals, and
• wherein the light signals incident upon the first redirection region are redirected, independently by the first redirection region, to the second redirection region and the third redirection region depending on a position of incidence upon the first redirection region.

A method for operating a transmission device of an optical measurement apparatus for capturing objects in a monitoring region, the method comprising:

• transmitting light signals using at least one transmitter light source onto at least one redirection region of at least one light signal redirection device;
• changing a direction of the light signals with the at least one redirection region in dependence on an incidence of the light signals;
• and
• directing the light signals into the monitoring region, wherein an angle of incidence of the light signals on the at least one redirection region is set using at least one drive device,
• wherein the direction of the light signals is set with the aid of at least one diffractive structure that is pivoted by a drive device to set the angle of incidence upon the redirection region and change an angle between the diffractive structure and the at least one transmitter light source,
• wherein the at least one light signal redirection device has three redirection regions with different direction-changing properties,
• wherein the three redirection regions include a first redirection region, a second redirection region, and a third redirection region,
• wherein the first redirection region is arranged in front of the second redirect region and the third redirection region with respect to a beam path of the light signals, and
• wherein the method further comprises redirecting the light signals incident upon the first redirection region, independently by the first redirection region, to the second redirection region and the third redirection region depending on a position of incidence upon the first redirection region.