Cinomorph _prismatic is based on the achromatic prisms and the spherical focus corrector. This lens model has two knobs on top to control the expansion ratio, which can be steplessly adjusted from pass thru mode up to 2.40:1 Cinemascope format. The lens also has the adjustable terminal stops for both 16:9 and 2.40:1 modes. This greatly helps to match the picture area precisely to different screens and setups. Once the setup has been done, the mode switching will be quick and precise to perform.
with a motor option
The motor option for the prismatic lens assists the switching of aspect ratio. This is a pleasant feature, especially with the ceiling mounted setups. A powerful remote controller drives the two motors, which rotate the prisms, resulting a wished expand ratio for each movie. The remote controller has two very powerful IR leds, which can effortlessly control the lens even at the very largest theater rooms from the seat, via the screen, back to lens unit. The IR commands can also be transferred to the universal remote controller.
The optics of prismatic lens is based on two achromatic prisms, and a spherical focus correction element. All the air-glass surfaces have broad band anti-reflection coatings to prevent the reflections, and to maximize the light output of the system. The achromatic optics means that the both prisms are made of two prism components of opposite polarity and different optical properties. The components are eventually seamlessly bonded together. The formed pair of achromatic doublets effectively reduces the chromatic aberration, which would occur as a color fringing in a picture projected through the single prisms.