Who could use Hubble telescope?
Though most HST observation time requests are from academics and other professional institutions, the HST director does occasionally offer "Director's time" for HST observation use by the public. Requests for use are highly screened regardless of the source, and must be relevant to HST's mission, as well as the exploration of space itself.
No, Edwin Hubble had nothing directly to do with the Hubble Telescope, it was named for him because he profoundly changed the understanding of the nature of the universe. Hubble died before the the physical exploration of space began. Hubble also created his own Hubble telescope back in 1929 but it is not the orbiting Hubble telescope. Go to the NASA website for more information.
The Hubble telescope is a so-called Cassegrain reflector, which means it uses mirrors, two to be exact. A large one (primary reflector) for collecting the light, the smaller one (secondary reflector) for directing the light from the primary reflector to the observation opening. Therefore, the Hubble telescope does not make use of a lens.