The glasses you wear to view the movie contain a pair of analyzing filters (a quarter wave plate and a linear polarizer) of opposite handedness. Light that is left-circularly polarized is blocked by the right-handed analyzer, while right-circularly polarized light is blocked by the left-handed analyzer. When you view each of those through one eye your brain sees two different images and interprets that as a 3D image.

dichroic中文

Using circularly polarized light to create movies is a huge advantage over linearly polarized light. Because of the properties of circular polarization you can sit anywhere in the theater as well as move and tilt your head and get the same viewing experience. With linear polarization your best viewing position is directly in the center of the screen. You also don’t want to move your head as twisting or tilting can cause the opposition of the polarizers to bleed into each other and distort the image.

dichroicmirror中文

Overview: When you place different filters in front of each eye, different direction polarizers for example, you can create a stereoscopic 3D effect. Stereoscopic means placing 2 identical images, that are slightly offset, on top of one another. When these images use different polarizing directions, and you use matching polarizers, one over each eye, your brain perceives this as a 3D image.

To create a 3D movie two images are projected overlayed onto the same screen through circular polarizing filters of opposite handedness. (See the What’s Happening section on the polarization page to learn about linear polarization.) Circular polarization works similar to linear polarization, except instead of the polarization running up and down, or left and right it works in left hand or right hand spirals.

Dichroicmirror

Your have had your money back a hundred times over with your Classics and want to get a bit more out of them? This dichroic filter is specifically designed for the DLH4 and DLHM4-300 Classic halogen dedolight heads. Drop it in the barn-door slot to convert the tungsten 3200K source to daylight (6000K, 1976 CRI 96)  and get more functionality out of your Classic.  Contrary to gels, this glass dichroic filter remains stable through years of use.  Dichroics achieve the highest light transfer (only 1 stop loss). Pair it with the smallest of the Parallel Beam Intensifier (DPBA-7) and get the punch back in a tight beam (only 15% intensity loss = 160fc @ 10ft).

Dedolight California Inc. is the new Flagship facility for Dedolight on the West coast. We stock all Dedolight and ProFound equipment along with complementing accessories. Our web store only offers a selection of our inventory. Contact us for info and pricing of equipment not listed here. We also offer one-on-one video streaming and in-house demos.