First of all, for the ultra-short-focus technology, the author in this simple science popularization. For the projector, there will be a projection ratio of this data, which is the ratio of the projection distance to the length of the bottom edge of the projected image, usually between 1.5 and 1.9. With the development of projection technology, the projection ratio has gradually decreased, and the subsequent short-focus technology and ultra-short-focus technology have emerged. In general, the smaller the projector's throw ratio is, the better the effect of short focus is. The projector DHN DM907 that was recommended next time was launched by Shanghai Didong at the end of 2016. Once launched, it was widely concerned by the society and could be applied in all walks of life. Of course, the reason why it is so easy to be accepted by all walks of life is by no means a matter of luck. Let us take a look at its advantages:
One: laser light source
1. Bright laser light source - 4500 lumens can meet the needs of all-day viewing on many occasions.
2. Long life of laser light source, low consumables -20000 hours light source life, 2.5 hours per day, 15 days per month for 22 days. Compared with the ultra-high pressure mercury lamp on the market, it has the advantages of low brightness attenuation, long life, and no consumables.
3. The green light of laser light source - The laser energy efficiency is higher. It is a new type of high-brightness, low-energy-consuming solid-state light source. It has the advantages of small heat generation, fast heat dissipation, low noise, long duration, etc.
4.360° projection, flexible placement, supports projector 90° upright projection
II: High-definition
5.1080P full HD resolution, 16:9 widescreen ratio is the same as the standard movie, the picture will not be stretched and compressed, no black edges.
Three: ultra-short coke
6.0.25:1 projection ratio, a large screen at a short distance, no space,
7. The speaker/viewer is in the area outside the projector and the screen, the eyes will not be projected light, nor will it leave a shadow on the screen (conventional transmittance projection and telephoto projection will have this problem)
8. Advanced curved mirror imaging technology
Four: support touch
9. Optional stylus can achieve touch, can replace the electronic whiteboard, more economical
10. Support 5 simultaneous writing
11. Smoother writing, no interruption, less delay
12. Companion software for teaching training
Five: Flexible Geometry Adjustment
13. Support level and vertical trapezoidal correction, support side projection, make projection installation and placement more flexible
14. Supports four-corner stretching function, multiple splicing adjustments are simpler, and multiple projection stacking adjustments are simpler
15. Built-in 2*2 3*3 5*3 grid can be more freely stretched to arc and other special-shaped screen
Six: single projection arc screen - laser curved TV
16. A single projection arc screen, the living room arc theater
Seven: Fusion function
17. Multiple projections merge into bigger and wider pictures
18. Each 1080P, multiple fused to multiple 1080P, up to 4K 8K and other ultra-high resolution
19. Provide large-scale conference room, multimedia room HD large screen solution
Eight: 3D function
20.60HZ refresh rate can play active 3D
21. Support 1080P active 3D fusion (two channels have been tested successfully)
22. 3D support for up/down and left/right frame sequential frame packing (Blu-ray player) formats
23. Supports passive 3D
In practical applications, the DHN DM907 is free from space limitations and has the ability to resist ambient light. It is a truly customized model. Shanghai Didong is very confident that this machine will have a more prominent performance in the field of business and home customization. And revealing that the technically perfect result of the paragraph, the cost has also dropped significantly. We also expect Shanghai Didong to take advantage of its core technologies to provide more low-cost, high-quality laser products to the market in the future.
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