Available from Tower Optical Corp. is “Optics Cookbook No. 2,” a catalog that showcases a variety of optical components, including mirrors, windows, beamsplitters, standard and micro prisms, zero- and multiple-order wave plates, and ball, drum, standard and cylindrical lenses. Highlighted are the new achromatic wave plates, which provide constant retardation over broad spectral ranges. The 15-page, full-color publication includes diagrams, photographs, specifications, dimensional data and product descriptions. The company’s custom optics services are described, and examples of the parts it has fabricated are shown. A technical section on wave plates is included.