1. An optical device, comprising: an outer casing; an optical support fixed to a position within an interior of the outer casing; a plurality of optical components mounted to the optical support; a heat sink thermally coupled to a first optical component of the plurality of optical components, wherein at least a portion of the heat sink extends through the optical support; a gasket configured to thermally insulate the portion of the heat sink extending through the optical support; a printed circuit board separate from the optical support and fixed to a position in the outer casing that is spatially separated from the optical support and the plurality of optical components; one or more electrical components mounted to the printed circuit board; and one or more electrical conductors electrically connecting the one or more electrical components to the plurality of optical components.