Bit Cauldron and XpanD announce universal 3D specs - Techwatch Support Forums: Digital & Satellite TV, FTA, Cable, Computers, Mobile Phones, Apple and General Tech Forums

Digital TV News · 24-08-10, 12:10 PM

Two manufacturers have this week announced universal 3D glasses. Bit Cauldron’s glasses, which are said to eliminate the problem of flicker when the viewer looks away from the screen, are coming to market via Monster Cable in September priced at £165. Monster claims that the Monster Vision Max 3D range offers the world’s first [...]

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nvingo · 24-08-10, 03:31 PM

Hmmn. When I read recently that one of the major Designer Sunglasses brand was to produce 3D viewing glasses for cinema I thought oughtn't they go a step further and make combi TV/cinema compatible ones.
Cinema is dead simple. Two projectors (basically) aim their images onto a single reflective screen. Each projector's light passes through one polarising filter at the lens then another at the viewing glasses. This is what separates the two images. No electronics are involved.
With an HDTV, the two images alternate at high speed. The glasses have to close the shutter for one eye whilst the alternate image is in view, then switch eyes in sync with the TV. Electronics and an LCD shutter.
However one property of LCD shutters is that they work by twisting the polarisation of light. They use two filters per lens which normally block light in all polarisations but when active will allow some light through (or by fitting the filters so they line up, can be made to block light when active).
So by simply making active 3DTV glasses with front polarisation matching 3D cinema glasses, and setting a special mode to "open" both lenses, they become 3D cinema compatible.

However I'm not sure 3D laptop screens use either technology.

Samsung twin-pack of extra 3DTV glasses is about £150. £75 per pair.
I expect simple cinema glasses cost about 10p per pair to make.
At the moment cinemas are recycling 3D glasses after each show, and passing that cost onto the viewer, would they give a reduction in the ticket price if you took along your own? And at £165 per pair would you be want to?

24-08-10, 12:10 PM	#1 (permalink)
Digital TV News Senior Member Join Date: Feb 2008 Posts: 1,397 Thanks: 0 Thanked 8 Times in 8 Posts	Bit Cauldron and XpanD announce universal 3D specs Two manufacturers have this week announced universal 3D glasses. Bit Cauldron’s glasses, which are said to eliminate the problem of flicker when the viewer looks away from the screen, are coming to market via Monster Cable in September priced at £165. Monster claims that the Monster Vision Max 3D range offers the world’s first [...] More: Bit Cauldron and XpanD announce universal 3D specs

24-08-10, 03:31 PM	#2 (permalink)
nvingo Senior Member Join Date: May 2008 Location: Cambs, UK Posts: 405 Thanks: 6 Thanked 65 Times in 61 Posts	Re: Bit Cauldron and XpanD announce universal 3D specs Hmmn. When I read recently that one of the major Designer Sunglasses brand was to produce 3D viewing glasses for cinema I thought oughtn't they go a step further and make combi TV/cinema compatible ones. Cinema is dead simple. Two projectors (basically) aim their images onto a single reflective screen. Each projector's light passes through one polarising filter at the lens then another at the viewing glasses. This is what separates the two images. No electronics are involved. With an HDTV, the two images alternate at high speed. The glasses have to close the shutter for one eye whilst the alternate image is in view, then switch eyes in sync with the TV. Electronics and an LCD shutter. However one property of LCD shutters is that they work by twisting the polarisation of light. They use two filters per lens which normally block light in all polarisations but when active will allow some light through (or by fitting the filters so they line up, can be made to block light when active). So by simply making active 3DTV glasses with front polarisation matching 3D cinema glasses, and setting a special mode to "open" both lenses, they become 3D cinema compatible. However I'm not sure 3D laptop screens use either technology. Samsung twin-pack of extra 3DTV glasses is about £150. £75 per pair. I expect simple cinema glasses cost about 10p per pair to make. At the moment cinemas are recycling 3D glasses after each show, and passing that cost onto the viewer, would they give a reduction in the ticket price if you took along your own? And at £165 per pair would you be want to? Last edited by nvingo; 24-08-10 at 03:39 PM.