Three-dimensional technologies did not leave anyone indifferent, today more and more people want to buy a 3D TV and three-dimensional glasses for home. Manufacturers often supplement the technique with glasses, but they are rarely of good quality. It is better to purchase quality accessories additionally.
Instructions
Step 1
Despite the fact that there are many 3D glasses produced today, all of them can be divided into two large groups: passive and active glasses.
Passive 3D glasses are divided into two subgroups: polarized glasses and anaglyph glasses. Anaglyph three-dimensional glasses are the simplest, these are the same colored films in cardboard frames that we can see in some cinemas, on store shelves. The color of the film for the left and right side is your own; standard glasses use red and green film. Each color, when broadcasting a signal, captures only its own spectrum; as a result, a three-dimensional image is obtained, albeit with somewhat distorted shades.
Anaglyph glasses with yellow and blue lenses help to avoid color distortions. One of the subtypes of anaglyph glasses is used for watching Dolby 3D Digital Cinema films. Polarizing glasses form an image separately for each eye due to the optical characteristics of the lenses used. But such glasses require increasing the brightness of the screen, otherwise the picture will be dull.
Step 2
Active 3D glasses with a shutter differ from passive glasses in that a three-dimensional image is formed by alternately closing the eyes with special liquid crystal shutters. The TV or projector reproduces the image in sync with the glasses, and for the proper operation of such glasses, a special sensor is required to transmit the signal.
Active 3D glasses are quite expensive, but they allow you to get the highest quality image. Of the minuses, it is worth noting, for example, the marketing ploy of some manufacturers. They make glasses that are only compatible with certain TV models. In addition to the quality of the image, it should be estimated at what distance the viewers will sit when watching. Passive glasses allow you to watch 3D films at a distance of up to 6 meters, active devices - up to 15 meters. Active 3D glasses are suitable for cinemas and conference rooms where the image is broadcast from a projector, and passive glasses are recommended for watching movies at home.
Step 3
Before buying glasses, look at the parameters of your TV: the glasses must match them. If there are no instructions for TV, just remember what kind of glasses you were given with the TV. If these were simple thin glasses, then polarizing glasses are quite suitable for you, but if the glasses were plastic, weighty with on indicators, then your choice is shutter glasses.
Active shutter glasses have a battery, which is located on the bow near the lens, the quality of synchronization with the image largely depends on the quality of its work, so choose glasses with the highest battery capacity indicator. The battery is recharged using mini- or micro-USB cords, check their completeness, and also check the possibility of recharging from a computer - this is convenient. It is even more convenient if the model of your choice will have the ability to wirelessly recharge using a special mat.
Step 4
Pay attention to the transmittance of the lens - this is an indicator of its sensitivity. So, if the mark is 30%, then the image in the glasses will be 70% darker than the real one.
Step 5
If there are children in the family, purchase glasses for them separately, they must be marked "For children". These glasses are much lighter than adults, smaller in size and usually have more sensitive lenses.
Step 6
Be sure to talk to a consultant, let him know from what distance you plan to watch TV. All three-dimensional glasses have a range, but this indicator is indicated at the very end of the manual, so it is better to clarify. Cinema and conference rooms will require a different model than the home. The maximum range of the glasses is currently 15 meters.
