Introduction to the classification and principle of "vr glasses"
For those who have not previously touched VR technology, VR glasses are undoubtedly a very magical thing. At the same time, of course, there are some people who will be curious. Let us help you understand. VR glasses are VR heads, virtual reality head-mounted display devices. Since there is no concept of head display in the early stage, VR glasses, VR eye masks, VR helmets and the like are not known according to the appearance. The VR head display uses a head-mounted display device to close the person's visual and auditory sense to the outside world and guide the user to create a feeling in the virtual environment. The display principle is that the left and right eye screens respectively display the images of the left and right eyes, and the human eye obtains such a difference information and generates a stereoscopic effect in the mind. VR head-mounted VR glasses are an inter-generational product. Not only does every lover experience with surprise and joy, but also fascinated by its birth and unknown future. In general, VR head display devices can be divided into three categories: external head display devices, integrated head display devices, and mobile head display devices. VR glasses The external head-mounted display device has a good user experience, a separate screen, a complex product structure and a high technical content. However, due to the constraints of the data line, it is not free to move, such as HTC vive [4] and Oculus Rift. [5] One-piece head-mounted display device , the product is less, also called VR all-in-one machine, you can feel the visual impact of 3D stereoscopic effect in the virtual world without any input and output equipment. The mobile terminal display device has a simple structure and low price, and can be viewed by being placed in a mobile phone, and is convenient to use, such as an empty wing VR glasses. The working principle of the interlaced display mode is to divide a picture into two fields, that is, a singular scan line field composed of a singular line or an even scan line field or an even field composed of a single field and an even line. When using the interlaced display mode for stereoscopic imaging, we can divide the left-eye image and the right-eye image into a single-picture field and an even-picture field (or vice versa), which we call a stereo-interlaced format. If the shutter stereo glasses are used in conjunction with the interlaced mode, the vertical sync signal of the field can be used as the shutter switching synchronization signal, that is, when the single field (ie, the left eye picture) is displayed, the stereo glasses will cover one of the eyes of the user. When changing the display field, the switch will cover the other eye, so that the stereoscopic image can be achieved. Picture exchange, its working principle is to display the left and right eye images interactively on the screen. Using stereo glasses with such stereo display mode, only need to use the vertical sync signal as the shutter switching synchronization signal to achieve the purpose of stereoscopic imaging. . Using other stereoscopic imaging devices, the left and right eye images (screens separated by vertical sync signals) are distributed to the left and right eye display devices. Since there is only one computer screen, and we have two eyes, we must let the images seen by the left and right eyes separate from each other to have stereoscopic vision. At this time, you can use 3D stereo glasses to make this parallax continue to appear on the screen. Send the stereo signal (left eye - "right eye -" left eye - "right eye -" in sequence) to the screen through the control IC, and simultaneously send the synchronization signal to the 3D stereo glasses, so that they can switch left and right simultaneously. The eye image, in other words, the left eye sees the scene that the left eye should see, and the right eye sees the scene that the right eye should see. 3D stereo glasses are a penetrating liquid crystal lens, which controls the opening and closing of the liquid crystal glasses through the circuit. The opening can control the blackout of the spectacle lens to cover one eye; the off can control the spectacle lens to be transparent, so that the other eye can see another A look at the image that you should see. 3D stereo glasses can imitate the real situation, so that the left and right eye images are alternately displayed on the screen alternately, and synchronized with the 3D stereo glasses, plus the physiological characteristics of the human eye persistence, you can see the real stereoscopic 3D. image.
APM lab DC Power Supply is designed to provide continuously variable output voltage and current for a broad range of applications in a compact 1U and 2U high ,19" standard rack mounting. The front panel layout makes the laboratory dc power supply easy to use.
Some features of the high voltage dc power supply as below:
200V DC Power Supply,DC Switching Power Supply,Adjustable Power Supply,Digital Control Dc Power Supply APM Technologies Ltd , https://www.apmpowersupply.com