An optoelectronic device having an optoelectronic component that receives or generates radiation and has a main radiation passage surface, wherein the component is assigned an aperture which defines a radiation cone for radiation passing through the main radiation passage surface, and the aperture has an inner surface having a region inclined away from the main radiation passage surface. The method includes using at least three of said stations in front of the last-to-be-used station to apply ink from at least three of the fountains thereof, and using the last-to-be used station to deposit a high-solids water-based glossy coating material fed from the associated fountain over the ink applied by the previous ink-applying stations. The housing is made of a plastic material and is an injection-molded part. The valve is equipped with means for adjusting the vacuum level at which it actuates to accommodate varying vacuum levels found at different pools. The receptors are configured for selectively binding to a first measurand.