| 摘要 |
An image projection system comprises an image projector, such as a film or television projector and a projection screen The projection screen is fabricated of a substantially transparent material, such as glass or plastic. The screen of transparent material has one or more areas or portions formed therein which areas or portions may be made to be translucent upon the application of a stimulus. Once in a translucent condition, the projected image can be received and viewed on the translucent portion A mirror can be positioned behind the projection screen so that a person can view the reflection of themself in the mirror when the screen is transparent, and an image can be projected when the projection screen is made to be substantially translucent.
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