Positioning the projector

To determine where to position the projector, consider the size and shape of your screen, the location of your power outlets, and the distance between the projector and the rest of your equipment. Here are some general guide- lines:

•Position the projector on a flat surface at a right angle to the screen. The projector (with the standard lens) must be at least 3 feet (0.9m) from the projection screen.

•Position the projector within 10 feet (3m) of your power source and within 6 feet (1.8m) of your video device (unless you purchase exten- sion cables). To ensure adequate cable access, do not place the projector within 6 inches (.15m) of a wall or other object.

•If you are installing the projector on the ceiling, refer to the installation guide that comes with the Ceiling Mount Kit for more information. To turn the image upside down, see “Ceiling” on page 35. We recom- mends using an authorized ceiling mount. The Ceiling Mount Kit is sold separately; see the Accessories catalog that came with this projec- tor or visit our website for more information.

•Position the projector the desired distance from the screen. The distance from the lens of the projector to the screen, the zoom setting, and the video format determine the size of the projected image. For information about image sizes at different distances, see “Projected image size” on page 43.

•For the standard lens that comes with the projector, the image exits at a given angle. However, the lens shift feature makes the image offset variable. The image offset is 100% at a 10:0 ratio when the projector is in 4:3 mode (default mode). This means that if you have an image 10’ high, all 10’ will appear above the center of the lens.

•This image offset is 50% when the lens shift is at a 1:1 ratio. This means that if you have an image 10’ high, the bottom of the image will be 5’ below the center of the lens.

•For information about the optional lenses image offsets, see “Projected image size” on page 43.

10 ft high image

10:0 bottom of image 100% above lens center

1:0

 

bottom of image

lens center

50% below lens

 

center

 

Projection angle in 4:3 mode (default)

10:0

1:1

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InFocus LP 840/LP 850 manual Positioning the projector
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LP 840/LP 850 specifications

The InFocus LP 840 and LP 850 projectors are designed to meet the needs of professional environments, offering powerful features, advanced technologies, and high-quality performance. These projectors are ideal for business presentations, educational purposes, and corporate events, providing a reliable solution for any scenario requiring clear and vibrant visual displays.

Both the LP 840 and LP 850 deliver impressive brightness levels, with the LP 850 boasting 5000 ANSI lumens, while the LP 840 offers slightly lower brightness at 4500 ANSI lumens. This high level of brightness ensures that presentations are visible even in well-lit rooms, allowing for seamless visibility without compromising image quality. They support a native resolution of 1920 x 1200, ensuring that detailed graphics and text remain sharp and clear for maximum impact.

One of the standout features of these projectors is their built-in collaboration tools, which provide seamless integration with various devices. This functionality allows multiple users to connect their laptops or mobile devices wirelessly or via USB, facilitating interactive presentations and discussions. The LP 840 and LP 850 also include HDBaseT connectivity, which simplifies installation and reduces cable clutter, allowing for the transmission of video, audio, and control signals over long distances.

The projectors utilize advanced lamp technology, which increases their lifespan and reduces maintenance costs. With an operational lifespan of up to 10,000 hours in eco mode, users can rely on these projectors for extended periods without worrying about frequent lamp replacements. Additionally, both models offer a quick start-up and shut-down feature, enhancing user convenience.

Another key characteristic of the InFocus LP 840 and LP 850 is their comprehensive set of connectivity options, including HDMI, VGA, and audio jacks, making it compatible with a wide range of devices. This versatility ensures that users can easily connect laptops, DVD players, and other multimedia sources without any hassle.

The design of the LP 840 and LP 850 is also noteworthy, featuring a sleek and professional appearance that complements any office or classroom environment. The lightweight yet durable construction makes it easy to transport between different locations, catering to the needs of dynamic workspaces.

In conclusion, the InFocus LP 840 and LP 850 projectors stand out as exceptional tools for communication, collaboration, and engagement. With their robust brightness, high resolution, advanced connectivity options, and user-friendly features, they are well-suited for any audience that demands reliability and performance in their visual displays.
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