Cinomorph _cylindrical lens has a very large aperture 4-element optics, which allows to project a large picture from a small distance. The cylindrical precision optics have a reference class picture quality with an extremely good corner-to-corner uniformity. The continuous focus correction allows the projector to be positioned close to the screen, allowing the throw distances down to 2 meters. Both the front lens and the smaller rear lens have their own adjustments. The focus adjusting is performed from the front using the L-wrench. and in case of imbalance in focus between the left and the right sides, the small lens has an adjustment to correct this.
with a motor option
Motorised focus option for the cylindrical lens gives an extra facilitating feature for setting up the lens. Like in case of projectors, it is a pleasant to have, even if not absolutely necessary. Especially with the ceiling mounted projector and for long throw distance, it gives a great help in finding the focus sweet spot.
The optics of cylindrical lens consist of two achromatic lenses, which are optically cylinders despite of the rectangular appearance. All the air-glass surfaces have broad band anti-reflection coatings to eliminate ghosting due reflections, and to maximize the luminance of the projector. The achromatic optics mean that the both lenses are made by two optical components of opposite polarity and different optical properties. After shaping polishing, the components are eventually seamlessly bonded together. The formed pair of achromatic doublets totally reduces the chromatic aberration, which would occur as a color fringing in a picture, if it was projected only through the pair of single lenses.