Projector OPTOMA ML750i LED DLP WXGA 450 ANSI lm, throw ratio 1.5:1, fixed focal length, 3D, black

Optoma ML750i is a compact LED DLP projector with WXGA native resolution (1200x800) and 450 ANSI lumens brightness. Designed for portability, it features a fixed focal length with a 1.5:1 throw ratio and a long-life LED light source rated for approximately 20,000 hours. The projector supports 3D content, multiple graphics and video resolutions up to 1080p, and connectivity via HDMI 1.4b. With built-in memory, media player, office viewer and an integrated speaker, the ML750i can display presentations and media directly from USB or microSD storage, or via a connected device.

Advantages

The ML750i combines LED efficiency and DLP image processing to deliver consistent colour and brightness over an extended lifetime while remaining lightweight and easy to transport. Auto keystone and automatic focus simplify setup when projecting off-axis. Native office viewer and built-in media player remove the need for a laptop during meetings or classes. Wireless casting and Display Share compatibility enable screen mirroring from Android, iOS, Windows and macOS when used with the appropriate Wi‑Fi dongle.

Suitable for

• Small meeting rooms and huddle spaces
• Classrooms and training sessions
• Portable presentations and business travel
• Home media viewing and casual gaming
• Digital signage and 24/7 display installations (subject to conditions)

Key specifications

• Projection technology: DLP
• Native resolution: WXGA (1200 x 800), aspect ratio 16:10
• Brightness: 450 ANSI lumens
• LED light source life: approx. 20,000 hours
• Throw ratio: 1.5:1 (fixed focal length)
• Focal length: 14.9 mm (fixed)
• Screen size compatibility: approx. 431.8 mm (17") to 2540 mm (100")
• Integrated audio: built-in speaker(s)
• 3D support: yes
• Weight: 0.425 kg
• Colour: Black

How to use

Place the projector at the appropriate distance from the projection surface according to the throw ratio and desired screen size. Connect a source via HDMI 1.4b, insert a USB or microSD card to use the built-in media player or office viewer, or enable wireless casting with a compatible Wi‑Fi dongle and the Display Share app. Power on the unit and allow the auto keystone and auto focus features to align the image. Adjust volume using the projector controls or route audio via the 3.5 mm output if external sound is required.

Recommendations

For best image quality, use the projector in a dim or controlled lighting environment and position it perpendicular to the projection surface when possible. Regularly remove dust from vents and the housing to maintain airflow. If used for extended periods, follow manufacturer guidance on duty cycles and provide periodic downtime to prolong component life.