Canon SX7 Mark II manual LCOS vs. LCD or DLP What can REALiS do for you?, Comparing Technologies

LCOS vs. LCD or DLP: What can REALiS do for you?

What’s the LCOS technology advantage? Lattice-free, seamless images and smooth, film-like quality video.

Say goodbye to annoying visual distractions common with LCD projectors, such as the grid-like pixel patterns known as “screen door effect.” Compared to LCD panels, LCOS panels result in smaller gaps seen between pixels — virtually eliminating the screen door.

Single-chip DLP projectors can produce troublesome red-green-blue spots, frequently referred to as a “rainbow effect.” LCOS panel technology does not have this problem inherent to single-chip DLP projectors.

The seamless images projected using LCOS panels result in images with realistic depth and intricate detail. Fine lines are displayed accurately and clearly. Small text is crisp and dark (even at 7pt.), making it easy to read. Thanks to the fast response time of LCOS panels, high- definition video leaps off the screen with breathtaking quality and integrity.

There’s no comparison. The advantages of LCOS are easy to see for both presenter and audience alike: crisp, clean images with deep contrast, fine grain and sharp resolution.

There’s no clearer choice than REALiS Multimedia Projectors.

Comparing Technologies

LCOS Projector	LCD Projector	DLP Projector
Three-Panel	Three-Panel	Single-Chip

Light from the projector lamp is seperated into red,	Light from the projector lamp is separated into red,	A constantly rotating color wheel reflects red, green,
green and blue, and then reflected from each of	green and blue, then passed through each of the three	blue, and white image components off a micro-
the three LCOS panels. The separated light is then	LCD panels. The seperated light is then recombined by	mirror device to produce the projected image. The
recombined by the polorized beam splitter. Since	a prism. The light passes through the LCD panels as	three primary colors are sequentially displayed and
the light is reflecting from the LCOS panels, there is	small dots, which tend to create a lattice-like pattern	synthesized in the viewer’s brain to produce images
virtually no “screen door” effect.	on the screen.	perceived as full color.

Seeing The Difference

Canon REALiS projectors use LCOS technology which virtually eliminates the appearance of gaps between pixels that exist in LCD and DLP projectors. Truth is, all three projector systems can provide equally high pixel counts. But here is the difference. With LCD, the panels contain pixels framed by drive circuits that obstruct a portion of the light from transmitting onto the screen. For DLP projectors, the chips are made of tiny reflective mirrors, one per pixel. These mirrors tilt back and forth based on the information of the images to be projected. As they tilt, the mirrors can create shadows which may give the appearance of spaces between pixels.

LCOS LCD DLP

Display of color and detail

REALiS projectors present outstanding color and intricate detail.

Images shown are for illustration purposes only. Simulated images displayed based on differences in aperture ratio for projectors using LCOS (>90%), LCD (60%), and DLP (<90%).