Projection Lamps For Entertainment, Education, And Display Purposes
Projection lamps perform a very basic but important function in all types of projection and display equipment. By serving as the light source, an image or moving footage is projected with light on an external surface and is increased in size. The lamp used in the projector will determine the brightness and definition of the projection, and there are many different types of bulbs used in the manufacture of these components.
Whether they are for digital or film-based media, projection equipment will provide the best performance when their light source is bright and focused. Strong illumination is not the only factor to account for in a projection lamp. Bulb longevity, which is usually referred to as lamp life, is another major consideration. And though some projection lamps might be considered especially advanced or high-performance compared to others, their advantages are not universal, as different lamps will satisfy different projection requirements.
Many high-performance or high-definition projectors use lamps that produce very powerful, bright light. Just a few bulbs capable of delivering this level of illumination are metal halide bulbs, high-pressure mercury vapor bulbs, high-intensity discharge bulbs, and xenon arc lamps.
These bulbs produce very bright light, which may be enhanced with reflectors. They’re powerful enough to be used in large spaces, including movie theaters, simulators, lecture spaces, and more. The lamp life of these options will range from 1,000 to 15,000 hours depending on the bulb and other specifics. Prices will vary considerably, but they can be on the more costly end of projection lamp options, especially for those used in professional projection equipment.
Halogen projection lamps can deliver a similar performance to high-intensity discharge bulbs, metal halide bulbs, and others. Halogens are one of the earliest types of projection bulbs, following incandescents. They are used in professional projection equipment as well as those used in home media equipment, classroom displays, and smaller museum exhibits. Halogens will provide roughly 2,000 hours of lamp life. Although their housing and other features will affect costs, they are among the more affordable types. Bare halogen projector bulbs can cost as low as just a few dollars per bulb.
Incandescent projector bulbs were the first type of electric light bulb to be used in projectors. They are still an option for modern projectors. They do offer limited lamp life at roughly 1000 hours and only a third of the intensity as a metal halide, mercury vapor, or halogen bulbs. Even with these performance limitations, they can still be an economical and reliable option for many household projectors and those intended for use in small spaces, including hobby, classroom, and art projectors.
Among the newest projection lamp options are LEDs. LEDs are most often used in portable and mini projectors. They are better suited to such applications due to the unique quality of the lighting, which can lose some intensity and definition if any ambient light is present. One feature that really sets them apart is their longevity, which will easily last the life of the projector without any replacement.
When projection lamps must be replaced, the process will vary by the projector. Some units make it easy to access the bulb, allowing a new, bare bulb to be added with simple tools. Other projectors will require a lamp and housing to be replaced as a complete module. Additionally, some projectors must be serviced by a technician or authorized service provider when a lamp replacement is needed.
What Is A Projection Lamp?
A projection lamp refers to the light source within a projector. The lamp may refer to just the bulb or to the bulb and housing or another module that fits in the projection unit.