The 2005 catalog from Rolyn Optics includes data, photos, performance graphs and ordering information for such items as prisms, reticles, beamsplitters, simple and compound lenses, optical flats and flat glass, flat and concave mirrors, and absorption and thin-film filters. Besides presenting new products, the 140-page booklet provides listings of commonly used optical formulas and the physical properties of common optical materials. A supplier of off-the-shelf optics, the company also offers custom cutting, coating, edging and complete fabrication.