Four Steps to Selecting the Right Screen

Step 1. Screen Type
Step 2. Screen Size
Step 3. Screen Format
Step 4. Screen Surface
Screen Borders and Shape

    
  Step 1. Screen Type

If choosing a screen for a multi-purpose room, select an electrically operated screen and use in combination with a projector lift. This combination allows for complete concealment of the products when not in use. Dedicated rooms are designed for specific installations that recreate a theater in a home. These rooms often require fixed screen systems that are built directly into the cabinetry or acoustic room treatments.



  Step 2. Screen Size

The best performance is achieved by determining the correct size. Ideally, the screen size should occupy a minimum of a 30° field of view for the audience. The rule of thumb is to use a screen width that is approximately one half the distance from the screen to the audience seating. Screen placement should be determined according to the sightlines of the installation. This will allow all members of the audience to see the screen.



Step 3. Screen Format

Select the appropriate format for the application. Common formats and their formulas are as follows:Step 4. Screen Surface

Many factors must be considered when choosing which screen surface best meets the needs of a custom installation. Seating configuration, projector model and type as well as ambient light are all factors that must be considered. This is why Da-Lite offers a diverse selection of screen surfaces to meet the needs of different environments.

Da-Mat
A smooth, white, vinyl surface that provides an exceptionally wide angle of view with no loss of resolution. It evenly distributes light over a wide viewing area while colors remain bright and life-like, with no shifts in hue. This material is designed to be used with projection where ambient light is controllable.
Gain: 1.0 Viewing angle: 50°

High Contrast Da-Mat
A smooth, gray, vinyl finish surface for high output LCD and DLP projectors. This surface improves the perceived contrast by lowering black levels. It is a flexible unsupported vinyl fabric and may be folded or rolled. Available on all models offered with the Da-Mat surface.
Gain: 0.8 Viewing Angle: 40°

Cinema Vision
Featuring a unique optical coating, this specially designed viewing surface provides the ultimate in movie realism in controlled ambient light conditions. Offers a wide field of view so each audience member will observe a uniform, bright, sharp image with no color shift. This surface is endorsed by the Imaging Science Foundation.
Gain: 1.3 Viewing Angle: 45°

High Contrast Cinema Vision
A smooth, gray, vinyl finish surface for moderate output LCD and DLP projectors. This surface improves the perceived contrast by lowering black levels and offers a moderate amount of gain. It is a flexible unsupported vinyl fabric and may be folded or rolled. Available on all models offered with the Cinema Vision surface.
Gain: 1.1 Viewing Angle: 45°

Pearlescent
This surface was specially designed for applications where a balance of higher gain and greater viewing angle is required. This special coating provides high reflectivity and brilliance without loss of image quality or resolution.
Gain: 2.0 Viewing Angle: 35°

Audio Vision
This acoustically transparent front projection screen allows for the sound to picture match, while still transmitting the full range and brilliance of an original soundtrack with maximum clarity.
Gain: 1.0 Viewing angle: 50°


  Screen Borders and Drop

Black masking borders are standard on all Da-Lite front projection screens at no extra charge. Borders enhance the perceived brightness of an image on a screen. The human eye perceives the image to have more contrast and a sharper picture with brighter colors. Borders also allow the projected image to "bleed-off" the screen for professional appearing presentations.

Drop is also available on most Da-Lite wall and ceiling electric screens. Drop is extra fabric added to the top or bottom of the screen to adjust the screen surface to within normal viewing heights. Drop can be specified in either black or white.

玩幻灯机的人大多都要约齐三五知己一起看片，要是多人同赏，玻珠幕就有它的致命弱点：漫反射的定向性。
与一般的白布幕不同，玻珠幕的漫反射角度是固定的，也就是说，只有在某个角度才能看到最佳的效果。而白布幕即使观赏者是站着、坐着，或者在左侧、右侧，其漫反射效果是一致的。而且，白布幕有一个玻珠幕没有的优点：可刷洗。因此，要没什么事的话，还是用白布幕得了。

茄子:
最近要来一幻灯机幕布
请你帮忙参考一下
我想价格在千元以内吧
辉达1550X1550这个怎麽样 ?
你讲的那个地方还有吗?
谢谢

百看不厌
你这个辉达1550X1550  550元是在那进的?

我8月买了台禄莱P150，同时买了个辉达1550X1550的折叠银幕，灰色的表面反光效果极佳！银幕价格：550元。

多谢了，茄子！有空来FB吧。

茄子，你说的这么多便宜又好的幕布哪里有的卖呀(比如说北京)？怎么电脑城里那么贵呀？
快说，不然来一盘红烧茄子。

[2002-11-06 02:18 补充如下]

翻译了一点，后来越来越觉得是在做广告，所以就到此为止了。
选择屏幕的四步走：
第一步：屏幕类型
第二步：屏幕大小
第三步：屏幕版式
第四步：屏幕表面
屏幕边缘和外形

第一步：屏幕类型

如果用在多功能房间，选择电动屏幕和投影机架的组合。这种组合不用的时候可以整个收藏起来。专用房间一般设计成家庭影院的布置。这种影院环境通常需要固定的屏幕系统，把屏幕直接安置在电视墙或听音室的声学措施中。

第二步：屏幕大小

要达到最好的效果就需要考虑好正确的屏幕大小。比较理想的选择是屏幕大小最小应该占到观众的30度视角大小。一般经验是选用的屏幕宽度大约是屏幕到观众距离的一半。屏幕的摆位应根据视线决定，这样所有的观众都可以看到满屏。

第三步：屏幕版式

根据应用的不同选择合适的版式。一般的版式尺寸如下：
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第四步：屏幕表面

选择最佳的屏幕表面需要考虑许多因素，来满足特定的需要。座位的部署，投影的型号和类型以及环境光照都是比须考虑的因素。这就是为什么 Da-Lite 提供若干种屏幕表面以满足不同环境的需求。

Da-Mat

平的，白色，乙烯基表面，可以容许特别宽的视角而没有分辨率的下降。在非常宽的视场内光线的分布均匀而图像颜色保持高亮而且生动逼真，没有偏色。这种材料设计用于投影机所处的环境光线是可控的场合。
增益: 1.0 视角: 50°

高对比度的Da-Mat

平滑，灰色，乙烯基表面，适合高输出（功率）的LCD和DLP投影。这种表面通过减低黑色的梯度来提高对比度。由于没有骨架，可以折叠和卷起。所有Da-Mat系列都有具有这种表面的型号。

增益: 0.8 视角: 40°

在这边卖发烧AV投影设备店家发现一种屏幕，价格极贵。并且按小二的说法，2K以下的屏幕（对角线60寸）是不能看的。

http://www_stewartfilm_com

哈哈, 这下找到很火爆的信息, 1.5M X 1.5M, 84寸的幻灯幕:
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产品代码 产品名称 型号规格          参考单价（元） 生产单位 标准编号
D30010 玻璃珠银幕 1.5X1.5M            330        秦皇岛长城银幕厂  
D30017 玻璃珠银幕 BEM100             2400        上海广电教育设备有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    228        南京金陵教具集团有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 卷筒壁挂  250        无锡湖光大发光学仪器有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    188        无锡市长大厦银幕厂  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    210        无锡市三石科工贸有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    200 无锡市东亭银幕厂  
D30017 玻璃珠银幕 1.5M×1.5M带卷筒支   260 无锡市东亭银幕厂  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    235 无锡银广电教仪器厂  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    225 锡山市凯达科教器材厂  
D30017 玻璃珠银幕 1.5M×1.5M 电动幕    560 无锡市东亭影视器材厂  
D30017 玻璃珠银幕 1.5M×1.5M           235 无锡市东亭影视器材厂  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    237 张家港市红叶视听器材有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 电动幕    448 张家港市红叶视听器材有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 自锁幕    277 张家港市红叶视听器材有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    237 张家港市电教器材厂  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    237 张家港市南丰银幕制造有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    136 张家港市天影电教银幕制造有限公司  
D30017 玻璃珠银幕 1.5M×1.5M 电动幕    448 通州市长江银幕厂  
D30017 玻璃珠银幕 1.5M×1.5M 带卷筒    235 通州市长江银幕厂  
D30017 玻璃珠银幕 1.5ｍ×1.5ｍ 带卷筒  237 诸暨市教学仪器厂 影教检1993
D30017 玻璃珠银幕 1.5×1.5             271 南昌洪实仪器厂  
D30017 玻璃珠银幕 1.5*1.5M             232 湘潭市教学仪器厂  
D30017 电动玻璃珠银幕 WG150           5200 潮阳市育才科教仪器厂  
D30017 玻璃珠银幕 TG60                 764 潮阳市育才科教仪器厂  
D30017 玻璃珠银幕 1.5*1.5              236 潮阳市育才科教仪器厂  
[/code]

美国※※牌荧幕:

http://www_da-lite_com/