Head-Mounted Displays (HMD)
Tips & Advice to help you make your decision on Head-Mounted Displays (HMD)
Have you been trying to find quality head-mounted displays (HMD)? A head mounted display, or helmet mounted display, is a device worn on the head as part of a helmet which has a small display optic front resembling large goggles or binoculars. These can display either computer generated images or they can some how enhance real world imagery. There are also models which combine these elements. These are used in a wide range of areas. There are models formatted to be used as personal "television" sets, to models made specifically for gaming. There are models used for aviation, engineering, sports and much more. Nearly anywhere some sort of virtual reality or situational training is required this technology is being implemented.
If you are looking for HMD technology you may have several options. Some of the things you may want to keep in mind during your search include the actual end use of the machines, this will determine everything from the manufacturer to the technology used in the device, consider the whether it displays completely computer generated visuals, enhances real-world views, or uses some combination, look at the accuracy and clearness of the display, durability and of course the price.
Going over your options is a good idea. Business.com has links you may find useful.
View the links to the left for head-mounted displays (HMD).
Head-Mounted Displays (HMD) Key Terms
Learn the terms to understand how head-mounted displays workBy Trisha Schulz Originally used in aviation, head-mounted displays now have numerous uses in business and industry, as well as entertainment and gaming. No matter what their use, many find head-mounted displays fun for interacting in virtual realities. And this technology also has educational applications for in-house training, such as teleconferences from a remote site.
When choosing a head-mounted display you'll want to think about how you plan to use the device and what functions would be most beneficial. It may also help you to know the following key terms.
Virtual reality (VR), virtual environment (VE)
A virtual reality environment refers to the use of lifelike 3D images to create a simulated environment that the user feels a part of. A virtual environment is influenced by the user's interactions with it, including movement.
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Check out this tutorial about virtual reality environments from HowStuffWorks.
Augmented reality
Augmented reality takes shape when virtual and real worlds collide. Through an overlay system, technology can allow for some elements of both environments to come through to the user so that she or he still has control over real world objects in view.
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Learn more about augmented reality and its applications from the Augmented Reality Forum, a consortium of scientists and engineers working in this field.
Field of view (FOV)
Field of view refers to the full area that can be seen at any given time through the head-mounted display. Major consideration is given to field of view capabilities when testing and purchasing a head-mounted display system.
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Check out the diagram detailing field of view for a head-mounted display device from Inition.
Interpupillary distance (IPD)
Interpupillary distance pertains to the measurement between the user's eyes. This measurement varies for everyone and most head-mounted displays cannot be adjusted, which can cause distorted views and also poses a safety concern.
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Review this CyberEdge Information Services article detailing interpupillary distance and its implications for using a head-mounted display device.
Application programming interface
To achieve a virtual reality environment, programmers must use an application programming interface. This interface allows different software programs to interact with each other regardless of the software manufacturer to perform different functions.
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Computerworld explains more about how an application programming interface works.
Organic light emitting diode (OLED) display
Reflecting off organic compounds, an organic light emitting diode display is used in head-mounted displays because no back light is needed. This also helps cut down on the amount of energy used.
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Visit AbsoluteAstronomy.com for a definition, history and manufacturers of OLED displays, among other informational tidbits.
3D SXGA OLED displays. 400 grams. Includes tracker, audio and mic.
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