Please note that Doric Lenses Inc. will be closed from 12/24/2009 through 01/03/2010 inclusively. We wish everyone Happy Holidays and Best Wishes of health, happiness and prosperity for the New Year 2010!
We announce avaibility of folded grin cylindical lens. The lens collimates the light from laser diodes and changes the beam direction for 90 degrees. The beam direction change can be adjusted to tightest tolerance. The curved sides of a lens have AR coating while flat side has reflective coating. The lens is made using a new fabrication process that improves the lens quality without affecting its legendary ease of alignement. For now, we offer lens with 0.75 mm radius. Other sizes are possible if needed.
The distance between the bars within a stack of laser diode bars or “pitch”, is only nominal value of the average diode laser bar spacings and by no means a constant precise value. Typically, the tolerance on bar spacing is about 50 um.
Recent problems with quality of 'all-around' type AR coatings for our gradient-index cylindrical lenses have been resolved. A new coating supplier of 'all-around' coatings has been selected and tested.
Driven by the need for ever tighter specs, Doric lenses Inc. has acquired Taylor-Hobson's PGI-840 profilometer for the surface profile measurement of its world-famous cylindrical lenses.
Dr. Sead Doric and Milanko Tubic from Doric Lenses Inc. have contributed to October 2004 issue of Laser Focus World with an article about coupling of LED to optical fibers.
Compact and economical diode lasers are the sources of choice for a wide variety of applications. However, they do have the drawback of beam astigmatism, which must be corrected in many cases.