What do fan with laser pointer do to your favorite star?
Inexpensive high-power green laser pointer are not effective for astronomical use. The beams emitted by these lasers are too weak to be easily blocked by fog, smoke and ambient light. In the worst conditions, the high-power laser pointer beam is easily displayed at night, and the high-power mode remains visible throughout the day. Very suitable for sunrise and sunset astronomy. Laser and photography are not limited to hobbyists and laser pointer recommendations. Purchase a professional green laser pointer with powerful short pulses for high-speed photography with an exposure time of one billionth of a second.
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However, these competitions are still insignificant. Currently, there are about 400,000 projectors in the education market, including about 100,000 laser light sources. Over time, the last 400,000 units will be upgraded to new light sources. Traditionally, it is certain that the light source will be removed. Whether it is laser or HLD, the new light source will eventually win. At the same time, the education laser pointer projector market is also facing tremendous pressure. Large LCD devices are becoming cheaper and larger in size. Back to the city, the competitiveness of LCD will continue to grow, so how can it continue to grow?
2021-11-26 11:51:13
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