Projectors supporting long-throw projection are designed to cast large images (120-200 inches) from extended distances (5-10 meters), making them ideal for large spaces like auditoriums, lecture halls, churches, or outdoor venues where the projector must be placed far from the screen. Unlike short-throw projectors (which require close placement), these models use high-power lenses with a throw ratio of 1.8-4.0, ensuring clear, bright images even when installed at the back of a large room or outdoors.

The core design of long-throw projectors focuses on lens power, brightness, and stability. They feature high-quality glass lenses (vs. plastic) with a long focal length—this ensures the image remains sharp and distortion-free even at 10 meters distance. To compensate for light loss over long distances, they offer high brightness (4000-10,000 ANSI lumens) and high contrast ratios (5000:1-20,000:1), ensuring the image stays visible and detailed in large, well-lit spaces. Many include lens shift (vertical/horizontal) to adjust the image position without moving the projector—critical for ceiling-mounted installations in auditoriums. They also support large image sizes (up to 300 inches) and high resolutions (1080p/4K), with some models offering lens interchangeability (allowing users to swap lenses for different throw distances, e.g., switching to a super-long-throw lens for 15-meter distances).

Application scenarios are centered on large-scale spaces. In auditoriums or lecture halls, they’re ceiling-mounted at the back of the room to project presentations, lectures, or videos onto a large screen (150-200 inches), ensuring every attendee (even those in the front rows) can see clearly. In churches, they display hymn lyrics, sermons, or videos on a large screen above the stage, with long throw distance allowing the projector to be installed in a balcony or back corner (out of sight). For outdoor events (e.g., open-air movies, concerts), they’re placed 8-10 meters from a large outdoor screen, with high brightness cutting through ambient light (even at dusk) to deliver a visible image. In corporate boardrooms with high ceilings, they’re mounted high on a wall to project onto a large screen, using long throw to avoid taking up floor space.

When selecting a long-throw projector, key factors include throw ratio, brightness, and lens quality. Choose a throw ratio of 2.0-3.0 for 5-8 meter distances (120-150 inch images); 3.0-4.0 for 8-10 meter distances (150-200 inch images). Brightness of 5000+ ANSI lumens is essential for well-lit auditoriums, while 4000 lumens work for dimly lit spaces. Glass lenses are preferred over plastic for sharper long-distance images. Also, check for network connectivity (Ethernet/Wi-Fi)—this allows remote control and content sharing, useful for large venues where the projector is hard to access. With their ability to cover large distances, these projectors are essential for big-space projection needs.

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