Abstract: A lidar assembly includes a light emitter, a light detector, and a lens positioned to project light from the light emitter. The lens is polycarbonate. The lens has a light-absorbing dye in the polycarbonate that absorbs light having a first wavelength and transmits light at wavelengths greater than and/or less than the first wavelength.

Abstract: A vehicle lidar assembly includes a casing having a front cover and a back cover connected to the front cover defining a casing cavity between the front cover and the back cover. The front cover has an attachment feature designed to directly connect to a vehicle. The back cover is supported by the front cover and has fins designed to dissipate heat. The assembly includes a laser module disposed in the casing cavity. The laser module includes a housing having a hermetically-sealed cavity. The housing includes a base that is connected to the back cover. The laser module includes a laser disposed in the hermetically-sealed cavity 30 and supported by the base.