There are many types of projection screen material and all of them have benefits in certain situations. There can be no single answer to the question without knowing a lot more about the application. What follows is a general answer. Projection can be from the front of the rear and the screen surface for front and rear is very different. Rear projection is less common than front and specialist advice should be sought before selecting a screen surface for rear projection.
For front projection, there is a choice of either a rigid or a roller screen. Rigid surfaces are typically a flexible surface stretched across a framework.
In either case, there are various surfaces to choose from. High gain screens offer bright images by reflecting light towards the viewer rather than in all directions. While they produce much brighter images in certain viewing positions, the image brightness will fall away sharply as the viewer moves away from the centre line of the screen. Some can be very effective but it is vital that the viewing angles and reflectivity are checked and compared before choosing one.
The remaining front projection screen surfaces are Matt finish white or near white materials. Matt surfaces direct the projected light in all directions. Although the image is less bright than with a high gain screen, the image brightness is far more even than many high gain surfaces. They are ideal for rooms with a wide seating area and without high ambient lighting levels. Matt surfaces are generally less expensive than high gain surfaces.
For real economy, there are two materials than can be used. One is cotton sheeting. Stretched across a framework, cotton can provide a reasonable surface at a minimal cost. Be prepared to spend a little time building a framework ready for the surface to be stretched across it. The other alternative is even less expensive. White emulsion paint applied to a flat wall creates a screen for only a few dollars. Cotton and paint are not as effective as a purpose manufactured surface but are often perfectly acceptable.
To choose a roller screen, once again, select the right surface to suit the room. In addition, make sure the screen comes with a guarantee that the surface will be flat. Cheap screens are liable to curl at the edges and will distort the image. Avoid cheap screens.
Screens can be complex to choose and they are worth investing sufficient time to audition them before purchasing anything. Do consult dealers and consult more than one to make sure that you are getting good advice.
This questions is not really clear to me.Do you want to correct a dark projection screen in a rear projection TV or are you talking about a real projection screen?Thanks for clarifying.Otto TrommBeamax
Yes.
This Television is a rear projection CRT display. Front projection uses a self contained "Projector" usually hanging from the ceiling and shoots the image onto a fabric screen or wall. The projector in the RCA HD52W59 is actually inside the base of the unit and the projected image is bounced off of a mirror and onto the back of the screen There are many types or Rear Projection displays: CRT, LCD, DLP, LED and Laser.
You can purchase rear projection televisions at garage sales and websites such as Ebay and Craiglist since they are not made alot anymore. They have been replaced by flat screen televisions.
A good projection on the screen that you are using. Also you want to make sure that it will be able to hook up to your computer to use it so you can show things.
If you are planning on giving a lecture or presenting something to a group of people you don't have to use a projection screen, you could just use a blank wall, but having an actual screen is more professional. The screens are designed and created to give you the best picture quality possible whereas using a wall some of the sharpness of the picture will be lost. There are multiple kinds of projection screens (portable, manual, electric and rear) so if you plan on buying one you will need to research what will work best for you. Try this site for more information: http://www.projectorpoint.co.uk/projector-screen-advice.htm
These rear projection televisions are very much still avialable. You find them at any major retailer in the nation. Companies such as Best Buy and Walmart will have them for a relatively good price.
Rear-projection technology allows for large displays; rear-projection televisions range from 42" to 80" on the diagonal. Furthermore, rear-projection televisions are comparably less expensive than similarly sized plasma televisions. The rear-projection television is also very simple to set up, as no drywall work is required.
The types of TVs are LCD, Plasma, DLP, rear projection, front projection, and the older CVT. Plasma TVs are the best :)
How Stuff Works, CNET and Tech Radar all have comprehensive articles and comparisons on rear projection televisions. For pricing and purchasing, Best But, Overstock and eBay all have listings for them.
Samsung's 63-inch PN63B550 was the largest rear-projection Tv on the market.
The sediment you speak of could be a few causes. Dust collecting on the lens of the tubes or possibly, mold growing in the CRT cooling fluid. Then again, sometimes the rear of the projection screen will collect dust and cobwebs, etc.