Optoma ZK431ST Short Throw DLP 4K UHD 4000 ANSI lm Laser Projector

The Optoma ZK431ST is a 4K UHD projector designed for home cinema and professional AV use. It uses a solid-state laser light source instead of a traditional replaceable lamp. With a native resolution of 3840 x 2160 pixels, it produces sharp, detailed images. The 4000 ANSI lumen brightness keeps visuals clear in rooms with moderate ambient light, making it suitable for video content, presentations, and documents in fixed installations.

The short-throw lens allows the projector to display large images from a short distance, with a placement range of 0.4 to 3.5 m from the wall or screen. This flexibility is useful for room layouts where space or mounting depth is limited. Two rear HDMI ports allow two external sources—such as media players, computers, or set-top boxes—to be connected simultaneously. The projector is built for reliable, continuous operation in dedicated viewing rooms and corporate environments.

• Projection technology: DLP, for sharp pixel definition and consistent image quality
• Throw ratio: 0.496:1, suitable for large displays in rooms with limited space
• Screen size: 34.1 – 302.4 inches, adaptable for various viewing setups
• Native aspect ratio: 16:9, matching standard widescreen formats
• Contrast ratio: 2,000,000:1, providing clear separation between shadows and highlights
• Light source life: 30,000 hours, reducing the need for maintenance compared to lamp-based models
• Noise level: 27 dB, ensuring quiet operation in professional settings