Optoma HD31UST

A colour is a visual attribute that describes the hue or shade of an object or surface. It can be a single dominant colour, a combination of colours, or a range such as "Black, White". The value may be expressed in common names (e.g., Black, Silver) or descriptive terms (e.g., One Colour, Assorted).

The proportion between the width and height of a display, image or video, expressed as two numbers separated by a colon (e.g., 16:9). This attribute lists the aspect ratios that the product can support for input or output content.

The contrast ratio is the proportion between the brightest and darkest luminance a display can produce, expressed as a simple ratio such as 1000:1. It indicates how well a screen can differentiate light from dark areas, affecting image clarity and color depth.

The pixel dimensions of a display or image, expressed as width by height (e.g., 1920x1080). It indicates how many pixels are used to render the visual content and is commonly used for monitors, TVs, smartphones, cameras, and digital images.

The distance between the optical center of a lens and its image plane, expressed in millimetres. It can be a single value for fixed‑focal lenses or a range indicating the minimum and maximum focal lengths covered by zoom optics. This measurement helps users understand the field of view and zoom capability of cameras, lenses, and other optical devices.

The measurement of a display’s diagonal, expressed in inches or centimeters. It indicates the overall visual area available for content and is commonly used to compare monitors, televisions, laptops, tablets, and other electronic devices.

The main illumination source used by the product, such as LED, laser, CCFL, or other light-emitting technologies. It indicates whether the device uses a single light source or multiple sources and helps users understand the lighting characteristics of the item.

The category of illumination technology used by the product, such as LED, halogen, incandescent, fluorescent, or specialized lighting systems like DLP or RGB. It indicates the underlying light source and helps buyers compare products based on brightness, color temperature, energy efficiency, and intended application.

The highest electrical power that a device can draw or consume during operation, expressed in watts (W). It represents the peak energy usage of the product and is useful for estimating maximum power requirements, comparing efficiency across similar devices, and ensuring compatibility with power supplies.

The proportion between the width and height of a screen or image, expressed as two numbers separated by a colon (e.g., 16:9). It indicates whether content is designed for widescreen, square, or other aspect ratios and helps users match devices to their media formats.

The electrical power consumption or output of the product, expressed in watts (W). It indicates how much energy the device uses during operation or how much power it can deliver to connected equipment.

The minimum and maximum distances, expressed in metres, at which a projector can display an image on a screen while maintaining acceptable sharpness and brightness. The value is represented as a range (e.g., "1.2 - 10 m"). This attribute helps users determine whether the projector will fit their room size.

The number of times per second that a display updates its image, expressed in hertz (Hz). It indicates the smoothness and responsiveness of motion on the screen; higher rates generally provide a more fluid visual experience.

The pixel dimensions that a device can output or support, expressed as width by height (e.g., 1920x1080). It indicates the maximum resolution available for display content on the product.

The diagonal measurement of a display screen expressed in units such as inches or centimeters. It indicates the overall visual area available for content and is commonly used to compare monitors, televisions, laptops, tablets, and other electronic devices.

A list of security‑related capabilities that a device supports, such as encryption methods, authentication mechanisms, physical locks, and network security protocols. Each entry describes a distinct feature or combination of features that the product offers.

The electrical power output of each built‑in speaker in the product, expressed as a pair of values (e.g., "2 x 10 W" meaning two speakers each rated at 10 W). This attribute helps users compare audio performance and understand the power capacity of integrated speakers.

Indicates the type of audio system integrated into a speaker or audio device, such as stereo, mono, or an integrated sound system.

A list of accessories, cables, manuals or other components that are included with the product at purchase. Each item is described in plain text and may include quantity indicators such as "1 x" or "2 x" to show how many units of each component are supplied.

The proportion between the distance from a projector to its screen and the width of the projected image, expressed as a simple ratio such as 2:1 or 1.5:1. It indicates how far the projector must be placed to achieve a desired screen size and is useful for planning installation space.

Percentage indicating how consistently a product performs its intended function across units or over time, with higher values representing more consistent performance.

The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.

Represents the multiplier that indicates how many times an image or field of view is enlarged by optical or digital zoom. The value is expressed as a plain number, optionally followed by an "x" suffix (e.g., 2x, 5x). It describes the ratio between the magnified and the original size and does not include any unit.