Optical cover for detection device

An optical cover comprising:

• at least 2-separate apertures, a first aperture configured to face a light source and a second aperture configured to face a light sensitive element;
• and
• diffusing, absorbing, multilayer elements, and/or wavelength-changing elements, placed between the first and the second apertures in an optical decoupling zone, outside of a field of view of the light source and the light sensitive element to avoid stray light travelling from the light source to the light sensitive element within the optical cover,
• wherein the optical cover is made in one piece, the optical cover is transparent at an operating wavelength of the optical device, and the optical cover is configured to enclose a LIDAR sensing device.

A detection device comprising:

• a. an optical device comprising a light source and a light sensitive element which are optically decoupled inside the detection device,
• b. a protective housing enclosing the optical device, and comprising an optical cover having one internal surface facing the optical device and an external surface opposite to the internal surface,
• (i) the optical cover being transparent at an operating wavelength of the optical device, and
• (ii) the optical cover comprising at least 2-separate apertures, a first aperture facing the light source and a second aperture facing the light sensitive element;
• wherein the optical cover is made in one piece comprising diffusing, absorbing, multilayer elements, and/or wavelength-changing elements or a combination thereof, placed between the first and the second apertures in an optical decoupling zone outside a field of view of the light source and the sensitive element to avoid stray light travelling from the light source to the sensitive element within the optical cover, wherein the absorbing elements are applied on the external surface of the optical cover.