Holographic display technology has advanced significantly in the last twenty years and is now being used in many different industries. This type of display technology uses curved mirrors to create an image of any object within the electromagnetic field. In many instances the image produced is so clear that it can fool the human eye into seeing the object even though it is located many miles away.
One very popular application for 3d hologram projectors is in the area of security and surveillance. This can be especially useful in areas where there may be a lot of theft or vandalism. A simple attachment to a police car or other vehicle can be made to make the driver look like he is inside the car even while not being driven. The same technology could be used by thieves to make it appear that the person in the car is actually inside by covering up the GPS tracker with a handbag, bag, shirt, or other item. A 3d holographic projection system placed on the front of a vehicle, on the bumper, or on the roof could also deceive a would-be thief into thinking that the car is actually inside when it is not.
Another use for 3d hologram projectors is in the business or private sector. Companies such as restaurants, bars, or clubs typically use them to add some form of interactivity to their environment. They can be used to show a guest the menu or show a favorite beverage. Some clubs have added 3d projection screens to their dance floors to help prevent overcrowding and promote dancing. Hotel lobbies often use 3d hologram displays to allow guest to order room service without having to move from one table to another. They can also be used in conjunction with computer displays to provide customers with a view of the restaurant just as if they were standing in it.
In terms of applications for the home, there are basically two types of holographic displays. The first is a reflective image. These are commonly used in night clubs and restaurants to create a stage-like environment which can be walked through. These systems work by using reflective film stretched over a light source that projects the image onto the screen. While this is similar to a pinhole camera or the projection of an image onto a surface, the difference is that holographic displays use something called a zero-light-weight digital sensor to compensate for the lack of light at the location being displayed.
The second type of display is a holographic display that utilizes a clear polythene sheet instead of a reflector. These types of displays are much more common in smartphone applications. Instead, of the sensor collecting data from the reflection, it uses a clear polythene sheet to gather data from all sides of the phone. The sheet is then mounted on a tripod at a slight angle so that the user can clearly see the hologram projected onto the cell phone screen. While there are a number of ways this can be done – including displaying a picture on top of a clear polythene sheet or mounting the hologram on a rigid surface like a rigid metal frame – smartphone holographic projector systems generally rely on a flat surface to project the image onto. This is one reason why most smartphone applications designed for these devices utilize the tripod approach – because it allows users to stand on a flexible surface and easily view the image without having to worry about the device shifting or moving.
While there are some advantages to using flat surface holographic displays in the mobile space, they are offset by two major disadvantages: they are often much smaller than traditional projection displays and they require much more physical effort on the part of the user. In order to use a flat display like a smartphone holographic projector, it is necessary to touch the display with your finger. Even though smartphones have large LCD display with touch sensitive screens, they still use a resistive touchscreen. To use this type of display in a mobile environment, you’d have to press the display with your finger several times in a row in order to make contact with it. For many people this would be inconvenient, but for others it can provide the convenience of a touch screen without all of the physical strain.
Perhaps the most popular type of smartphone holographic display is called the pyramid. These devices look like flat, rectangular panels that sit on top of a glass cylinder and project images via laser pulses. Because the cylinder and the screen are transparent, there is little doubt that those who see the display will have a better idea of what is shown than if it was displayed using conventional lasers. However, even though pyramid devices have quickly become very popular there is a drawback to them that makes them somewhat unsuitable for use in handheld devices. The pyramid design of a smartphone holographic display cannot be adjusted.
There are two other types of smartphone holographic displays that are used in the field. The last two types of holographic display devices fall between the tripod and cylinder display styles. The final device that we will discuss is the piston display, which uses a similar technology as the pyramid but only allows images to be projected at a certain angle. You may be wondering why you should consider these different types of holograms if you are simply looking for something to put on your phone. If you want to develop holographic displays that are used in the field, then you should definitely pay attention to this information.