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Author Topic: 3D Glasses Robert LaValley Expert Film Handler Posts: 104 From: Tampa, FL Registered: May 2007 posted 07-09-2008 07:07 AM                     quote: Michael Wilkinson the glasses begin to issue a painful electric shock or something of the like... Sounds like mission impossible, "these glasses will self distruct in 5....4....3....2..... "  |  IP: Logged Mark J. Marshall Film God Posts: 3188 From: New Castle, DE, USA Registered: Aug 2002 posted 07-09-2008 09:45 AM                    Can someone post a picture of the glasses?  |  IP: Logged David Stambaugh Film God Posts: 4021 From: Eugene, Oregon Registered: Jan 2002 posted 07-09-2008 10:58 AM                        This must be them:  |  IP: Logged Mike Blakesley Film God Posts: 12767 From: Forsyth, Montana Registered: Jun 99 posted 07-09-2008 12:02 PM                        Somebody who steals glasses could be a person who wants to have their own pair, as opposed to using a set that other people have chewed, drooled and/or gotten their germs on. A good solution would be to sell the glasses. Hasn't some company come up with designer, more comfortable glasses? If not it would be a great idea - providing 3D turns out to be a big deal, which I'm still not convinced it will.  |  IP: Logged Thomas Pitt Master Film Handler Posts: 266 From: Leeds, West Yorkshire, UK Registered: May 2007 posted 07-09-2008 01:20 PM                     I have been to a few Real-D showings in my time, and been allowed to keep the glasses every time. I guess they're fairly cheap to make with circular polarizers and no electronics - the complex bit is the flickering polarizer in front of the projector. With IMAX 3D, the glasses are usually not 'disposable' and have to be returned after each showing. For the first IMAX 3D I ever saw (in London), the glasses contained 'headphone' speakers - working via IRDA receivers - in addition to the normal polarizers. This allowed for an extra sound channel with the speakers very close to your ear - for things like CB radio and telephone conversations in the film. At the exit door, they had a rack for you to return the glasses to and an alarm system in case you tried to sneak one out! In the Bradford IMAX, even though the glasses look much 'cheaper', you still can't keep them. There's a 'trash can' at the exit for you to put the glasses in, and a member of staff making sure nobody sneaks a pair out  |  IP: Logged Kenneth Wuepper Phenomenal Film Handler Posts: 1026 From: Saginaw, MI, USA Registered: Feb 2002 posted 07-09-2008 02:43 PM                     A permanently attached security tag with the theatre name, like hidden inside large ticket retail items, could be visibly attached to the glasses with the implication that an alarm would sound if the glasses went through any door. Sensors for these tags are relatively inexpensive and "look alike" dummies (like surveillance cameras) are even less expensive when compared to the cost of even a few pairs of lost glasses. A useful bit of pre-show entertainment would be to illustrate how the glasses are "sanitized" after each use. Also show how the glasses are useless without the very expensive stuff in the booth to activate them. KEN  |  IP: Logged Tristan Lane Master Film Handler Posts: 444 From: Nampa, Idaho Registered: Feb 2002 posted 07-09-2008 11:50 PM                     Dolby thought about this and the tag is already incorporated into the glasses. It's covered by a sticker that says "Security Device installed" or something to that effect. The cost issue with the Dolby glasses is due to the lenses. They are curved optical glass with coatings that resemble the dicroic coating on a reflector. Part of the loss mentioned in my previous post included damaged glasses. We have not had any frames break yet, but the lenses have popped out of a few pairs and never recovered.  |  IP: Logged Adam Holland Film Handler Posts: 66 From: Oak Grove, LA Registered: Nov 2007 posted 07-11-2008 08:56 PM                     WalMart is giving away the free through away 3-D glasses this week for the upcoming Hannah Montanna DVD release. Since we haven't gotten our new 35mm equipment and are having to rent from Swank, we are getting we will be showing the film two days after the DVD release and tickets sales are going well at this time for that movie. I was able to talk our local WalMart manager into giving me 400 pairs of the glasses that I will be using that weekend. We will try to reuse them the best we can each show. Just thought I would throw that out there to all of you.  |  IP: Logged Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 07-13-2008 03:50 PM                        quote: Kenneth Wuepper A useful bit of pre-show entertainment would be to illustrate how the glasses are "sanitized" after each use. So how DO they sanitize these things? I know the idea of putting something on my head that was on othere people's heads isn't exactly appealing to many people, no matter how "sanitized" they say it is. And isn't that an expensive proposition in and of itself....cleaning all those glasses? Don't all the Real-D systems and the newer IMAX film 3D systems use circular polariod now instead of the expensive active LCD glasses that Thomas is talking about in the older IMAX 3D system? How do these Dolby glasses work, anyway? They are not active LCD shutters or any other active electronic system, are they?  |  IP: Logged Lyle Romer Phenomenal Film Handler Posts: 1400 From: Davie, FL, USA Registered: May 2002 posted 07-13-2008 04:02 PM                     The Dolby 3D Galsses are a passive system. The are expensive because the lenses are very expensive tinted color filters. The glasses are sanitised in a commercial grade dishwasher the same way that silverware and plates are sanitised in a restaurant. If it's not appealing to wear glasses that have been through the process after being on somebody's head then it must really not be appealing to eat in a restaurant.  |  IP: Logged Tristan Lane Master Film Handler Posts: 444 From: Nampa, Idaho Registered: Feb 2002 posted 07-13-2008 04:11 PM                     I can't remember the term used by the Dolby guys used to describe the technology, but it seems that the filter wheel modifies the light in a similar fashion that polarizing does, but without the need to maintain the effect by using a silver screen. To me the filter and glasses look like dichroics. The lenses have a slight red and green tint. This doesn't affect the viewer's perception of the image because software is used within the Show Player to correct the color of each eye's image. Color correction is set on a screen-by-screen basis to allow for accurate representation of color on different variables within the theater. On sanitizing: Most theaters get a commercial chemical based dishwasher, and clean the glasses in the same fashion as dishes and glassware in a restaurant. It's a low-temp system and uses a detergent, rinse aid, and sanitizer (bleach solution). A booster heater is added to assist in drying without water spots. We are also pre-treating some glasses with lens cleaner to break down the butter and oils that accumulate from people eating buttered popcorn and touching their glasses. Some of the glasses coming out of the theater are literally covered in fingerprints and popcorn butter. RealD never used active glasses. The glasses have always been throwaway polarized type. There was a company called In3 or something that was marketing LCD shutter glass systems for theater use. The glasses were sanitized in the same way other reusables would. But, In3 was suggesting the use of a home use Fisher and Playkel dishwasher.  |  IP: Logged Ray Faultless Film Handler Posts: 96 From: Amington, Tamworth, England Registered: Jun 2001 posted 07-13-2008 04:13 PM                     At the Cineworld cinemas in the UK they let you keep the glasses but charge an extra £2 on every ticket.  |  IP: Logged Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 07-13-2008 05:39 PM                        So these different systems, Real-D polaroid vs Dolby 3D -- the 3D film releases play regardless of which 3D system is being employed, correct? As for the santitizing issue, it really is just a matter of public perception. People have been going to restaurants for millemia. They know from life experience that they are not going to find head lice on their silverware. On the other hand, reused eyeglasses worn on the head and near the eyes, is a relatively new and different experience and one can certainly understand where people like my mom would be a little uneasy about it. I think Kenneth's idea of showing how the sets are sanitized would be very helpful in minimizing the discomfort level. I know that when 60 Minutes did an hidden camera expose on the glasswear in hotels and showed the maids just wiping them down with dirty dust rags and then putting the "sanitized" cellophane around them, my mom almost threw up. Needless to say, plenty of people across the country had the same reaction and for the near future will not be so trusting of the hotels' sanitizing methods. You can bet many people including my mom are going to be wash every hotel drinking glass from now on before using it.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 07-14-2008 02:58 PM                     quote: Frank Angel I think Kenneth's idea of showing how the sets are sanitized would be very helpful in minimizing the discomfort level. Yea, they could put the sanitization machine on display behind a big glass wall like the Crispy Creame machine. Indeed, it is the cost of this machine that has turned off so many potential customers to the Dolby 3-D system... And its a rather high hidden cost(s) they don't mention in the brochures. It also takes extra employees to operate the sterilizer and circulate the glasses about. Many locations also simply do not have the room for this "extra" contraption. Mark  |  IP: Logged Bill Enos Film God Posts: 2081 From: Richmond, Virginia, USA Registered: Apr 2000 posted 07-14-2008 03:35 PM                     Just don't show them what really happens---a bunch of employees wiping the glasses off with a rag.  |  IP: Logged

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