Patent ID: 7595935

Claim:
A rod lens comprising a tubular body having a first end, a second end, a length and a diameter, a first optically transparent closing element, tightly sealing said first end of said tubular body, a second optically transparent closing element, tightly sealing said second end of said body, n further optical elements being positioned within said tubular body defining n+1 chambers in said tubular body, with n being an integer >0, and n+1 optical fluids being positioned in said n+1 chambers, with each of said n+1 optical fluids being positioned in one of said n+1 chambers, whereby at least one of said n+1 optical fluids has a refractive index different from the other n+1 optical fluids, and whereby at least one of said n+1 optical fluids has a refractive index of more than 1.3.