Transmission device of an optical detection device, detection device, vehicle, and method

A detection device for detecting objects in at least one monitoring area by electromagnetic transmission signals, the detection device comprising:

• at least one transmission device configured to transmit the electromagnetic transmission signals into the monitoring area;
• at least one receiving device configured to:
• receive electromagnetic reception signals that originate from electromagnetic transmission signals that are reflected in the monitoring area, and
• convert the electromagnetic reception signals into evaluation signals,
• an evaluation device configured to process the evaluation signals and ascertain items of information about the monitoring area based on the electromagnetic reception signals,
• wherein the at least one transmission device has at least one signal source configured to generate the electromagnetic transmission signals, and at least one signal influencing device configured to influence the electromagnetic transmission signals,
• wherein the at least one signal influencing device, when viewed in a direction transverse to an optical axis of the at least one signal source, has plurality of different optical diffuser areas adjacent to one another, which have different scattering properties with respect to the electromagnetic transmission signals, and
• wherein the plurality of different optical diffuser areas comprises:
• a ground diffuser area configured to diffract at least some components of the electromagnetic transmission signals as ground signal components with a first intensity;
• a near field diffuser area configured to diffract at least some components of the electromagnetic transmission signals as near field components with a second intensity greater than the first intensity;
• a far field diffuser area configured to diffract at least some components of the electromagnetic transmission signals as far field components with a third intensity greater than the second intensity, and
• a height diffuser area configured to diffract at least some components of the electromagnetic transmission signals as height field components with a fourth intensity equal to the second intensity.

A method for detecting objects in at least one monitoring area using a detection device by electromagnetic transmission signals, the method comprising:

• transmitting at least one electromagnetic transmission signal into the at least one monitoring area using at least one transmission device,
• influencing the at least one electromagnetic transmission signal with at least one signal influencing device,
• receiving, with a receiving device, at least one reception signal which originates from at least one transmission signal that is reflected in the monitoring area,
• ascertaining items of information about the monitoring area based on the at least one received reception signal,
• wherein the at least one transmission signal is transmitted, using the at least one transmission device, onto a plurality of different optical diffuser areas of the at least one signal influencing device and,
• wherein components of the at least one transmission signal that are incident on a first optical diffuser area of the plurality of different optical diffuser areas are scattered depending on scattering properties of the first diffuser area,
• wherein the plurality of different optical diffuser areas comprises:
• a ground diffuser area that diffracts at least some of the components of the electromagnetic transmission signals as ground signal components with a first intensity;
• a near field diffuser area that diffracts at least some of the components of the electromagnetic transmission signals as near field components with a second intensity greater than the first intensity;
• a far field diffuser area that diffracts at least some of the components of the electromagnetic transmission signals as far field components with a third intensity greater than the second intensity, and
• a height diffuser area that diffracts at least some of the components of the electromagnetic transmission signals as height field components with a fourth intensity equal to the second intensity.