Lens device for an optoelectronic sensor of a motor vehicle comprising a securing unit, optoelectronic sensor, motor vehicle and method

A method for assembling a lens apparatus for an optoelectronic sensor of a motor vehicle, comprising:

• arranging a reception lens on a support device in such a way that a rear side of the reception lens rests thereon in parts;
• and
• arranging a fastening device on the reception lens in such a way that the reception lens is held on the support device with a spring force that acts in a first direction,
• wherein the fastening device has a holding frame, which circumferentially surrounds the reception lens in a predetermined lateral region and shields the predetermined lateral region from optical radiation, and at least one spring element, by which the reception lens is supported in relation to the holding frame in at least one second direction that differs from the first direction,
• wherein the reception lens is supported in relation to the holding frame along a third direction different from both the first direction and the at least one second direction by means of the at least one spring element, and
• wherein the at least one second direction and the third direction are perpendicular to the first direction.