At the same time, the green laser pointer display also has the characteristics of light and thin, low cost, and green manufacturing: the power consumption is 50% energy-saving than the same size LCD TV, the life span can reach more than 2×104 h, energy saving and environmental protection; the product is small in size, light in weight, and low in price. The mass of a 100-inch laser TV is about 20 kg (the mass of an LCD TV of the same size is about 150 kg), which is easy to put in elevators and enter the homes of ordinary people; the laser display adopts reflective imaging, which has good viewing comfort; the laser display belongs to the green manufacturing industry. No large investment scale is required. Compared with the huge investment of traditional flat panel display in high-generation panels (the cumulative investment in the display panel field exceeds 1.2 trillion yuan), the laser display process is simple and meets the new display flexibility, portability, low cost, and high color The development trend of domain and high luminous efficiency.
Multiple wireless control devices cooperating with a computer means that in the same space, multiple users can use the wireless control device alone to control the computer at the same time, without conflict with each other. For example, in a multi-person meeting, there are usually many participants who want to participate in the discussion. They want to use laser pens to emit high powered laser on the progressive line of the projection screen at the same time. At this moment, each laser pen emits laser light should be distinguishable, and then each No user's operation can interfere with another user's operation. It is not difficult to find. Therefore, the difficulty of this application is to be able to distinguish each wireless control device first, and secondly to be able to identify and respond to the operation of multiple devices without interfering with each other. The existing technology cannot solve these two problems.