What is DLP (Digital Light Processing)

DLP is the abbreviation of "Digital Light Procession", which is digital light processing, that is to say that this technology first digitally processes the image signal and then projects the light. It is based on the digital micromirror element DMD (Digital Micromirror Device) developed by TI (Texas Instruments) company to complete visual digital information display technology. Specifically, DLP projection technology uses digital micromirrors (DMDs) as the primary key processing element to implement digital optical processing.

Imaging principle

After the light source passes through the color wheel, it is refracted on the DMD chip. After receiving the control signal from the control board, the DMD chip emits the light to the projection screen. The appearance of the DMD chip looks like only a small piece of mirror and is enclosed in a confined space composed of metal and glass. In fact, this mirror is composed of hundreds of thousands and even millions of micromirrors. Taking an XGA resolution DMD chip as an example, there are 1024×768=786432 micro-mirror units in an area of ​​1 cm in width and 1.4 cm in length. Each of the micro-mirrors represents a pixel, and the image is composed of these pixels. Since the pixels and the chip itself are quite small, the industry also calls these products using microdisplay devices as microdisplays.

Technical advantages

The advantage of DLP display boards is their extremely fast response time. You can switch individual pixels on and off many times while displaying an image. It makes use of a display panel to generate true color images in a field-sequential manner. The steps are as follows: First, green light is applied to the panel, and the mechanical mirror is adjusted to display the green pixel data of the image. The mirror then adjusts the red and blue pixel data of the image again. (Some projectors use the fourth white area to increase the brightness of the image and obtain bright hues.) All of this happens so quickly that the human eye cannot detect it. The images of different colors that appear sequentially are recombined in the brain to form a complete full-color image.

For high quality projection systems, 3 DLP display panels can be used. Each board is marked red, green, and blue, and the image is reorganized into a single true-color image. This technology has been used on large projection equipment in some digital cinemas. DLP display boards have high resolution and are very reliable. Their contrast is about twice that of polysilicon LCD projectors, which makes them more effective in bright rooms.

Technical disadvantages

DLP itself has almost no problems, but they are more expensive than polysilicon panels. When you look closely at the moving points on the screen (especially the white point on a black background), you will find that the image with field-by-field filtering will be broken down into different colors. When using the projector, a certain noise will be emitted when the motor rotates the color wheel.

Prospects <br> <br> data loss prevention technology (DLP) is becoming one of the most important security technology currently on the market. Enterprises favor data leakage protection technology to protect ownership data and meet regulatory compliance needs, providing a huge opportunity for solution providers who want to reach the most sensitive parts of the security market. Data leakage protection technology also brings numerous opportunities for security product vendors.

Nickel Alloy Products

Nickel Rod,Nickel Tube,Nickel Sheet

Baoji Yongshengtai Titanium Industry Co., Ltd. , https://www.bjystititanium.com