Rainbow Research Optics has many products available.  They provide custom optics, lens, Mirror Substrates, Beamsplitters, Laser Mirrors, Coatings, Wave Plates, prisms, windows and more.  Rainbow Research Optics has a very high quality standards and delivers products with fast turnaround times to accommodate immediate prototyping needs, just let them know your time frame. For a free quote visit www.rainbowoptics.com.