Projector Clock

A projector clock is also known as a ceiling clock. This is basically an analog or digital clock equipped with an inbuilt projector that creates an enlarged image of face of the clock on any suitable projector surface or screen, which is invariably the ceiling of a room. These are not very complex and can be built by hobbyists.

Advantages of projector clocks

The advantage of a projector clock is that it can be installed anywhere, even surfaces difficult to install conventional clocks on. They can also be moved easily depending on the projector used. The image projected can be in monochrome or color. The image generated by most projector clocks is large enough for a nearsighted person to easily see from a distance. An ordinary clock of similar size of the projected image would be expensive and impractical.

Projector clocks are also used in advertising. High-brightness analog projector clocks can be used to superimpose a business logo on the clock face, while there are low-brightness projector clocks designed for sports fans to project a favorite sports star or logo in addition to the time. projector clocks, like other clocks of the analog period, were generally analog. With the widespread adoption of digital clocks, digital projector clocks seem to have become the popular choice for many.

How it works

A projector clock, almost in all cases needs some form of a backlight. Clock displays do not radiate their own light. Different lighting technologies can be used to generate luminance to facilitate the projector of the face of the clock on to a screen or surface. These techniques can range from incandescent bulbs to LEDs. projector clocks are divided into two groups, low-brightness and high-brightness projector clocks. The image created by low-brightness projector clocks can be viewed only in a darkened room, while high-brightness ones create an image that can be viewed even in lighted rooms, but consume much more power.

Precautions

Most projector clocks draw their power from the mains of the house. Some also use other potentially dangerous technologies such as halogen bulbs and lasers. Halogen bulbs produce very high degrees of heat and can cause fires if not kept away from incandescent materials and can even explode if exposed suddenly to cold air. Lasers one the other hand can cause blindness id directed into the naked eye. So care should be observed when dealing with high power projector clocks.

There are many more fixture articles in our fixture section. There is more specific information in the links at the beginning of this article. They can guide you where you need to go.