US Patent 7545591 Uniform wall thickness lens barrel

Systems and techniques for improved lens barrel tolerance in optical systems. In some embodiments, a lens barrel has a first end section configured to position a first lens with a first diameter and a second section configured to position a second lens with a second larger diameter. The first end section of the lens barrel may include an inner mating section configured to position the first lens and an outer thread section. One of more portions of the inner mating section and associated portions of the outer thread section may be separated by a gap.