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Android OS and WIFI and 3M Lens Same As a Laptop (HK820) Mini Pocket Projector

CNC Machine Part

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90W LED Projection Lighting

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FAQ

What materials do you need to make star projection lights?

The utility model relates to an optical fiber lighting screen, and two computer projection lamps

How about the star projector on the Internet?

Considering the principle of the light (shielding the light), it might not be worth it...... However, the key depends on the effect. The image on the wall is clear or not, depending on the power supply (recommended transformer), the brightness of the environment (the darker the better), and the size of the space (the fabled projection distance is 20 square meters).

What is the relationship between the power of projection lamp and luminous flux and luminous efficiency?

Start with a formula: light effect = total luminous flux / bulb power. From this formula, we can see that the higher the luminous efficiency is, the stronger the ability of the lighting equipment to convert electric energy into light energy, that is, the higher the light efficiency is, the more energy saving.At the same time, the above formula is deformed: total luminous flux = bulb power * luminous efficiency. That is, under the same power, the higher the light value, the greater the brightness.If some businesses only promote their projection lamp power is relatively large, but the light effect is relatively low, so the relative brightness is relatively small, which is why we have the same brightness power products from different manufacturers is not strengthConsistent cause. Therefore, customers in the purchase of recommended projector products, but also pay attention to light efficiency of this parameter.

Where is it? FiveThe evening of the night light line, where to sell? Night light, oh!

Pro Taobao look, the cheapest only 3 more, I bought before. Suitable for night markets.

When I go shopping to buy, not on the Internet, and almost like this, but there is a sound, but I ask the lights to sell online, they say, without sound, when I bought the clerk tried to give me, the sound can be turned off T-T for help

One switch is to control the main lights and music, and the other is Lantern and rotation, that is, no music, but also lighting effect, then only turn

How long has the projector been used?

Enter the projector menu, with a light bulb option, where you can see the time of the projector light bulb

How to distinguish the true and false of projection light bulb?

The fourth category is homemade bulbs. At present, the South China Sea, Beijing Aihua Dandong Xinya Wright (original three factory Nanhai Huaxing)Alternative UHP can be producedThe common point of the bulb is that the bulb doesn't last long and is almost as good as the Taiwan light bulbThe process is easy to extinguish because of unknown reasons, and the rate of explosion is high. However, homemade light bulbs have been printed on UHP by many unscrupulous businessmenPretend to beOriginal UHPLight bulb for sale.The fifth type is the refitted bulb. For example, using VIPRChange to UHPBulb, HSCRChange to UHPBulb, UMPRDchangePretend to be NSHBulb, etc..The sixth category is the old bubble or counterfeit light bulbs, such as illegal traders installed bubble bubbles and Japan, Taiwan and coastal areas such as domestic imitationProjector bulb. Its characteristics are rough workmanship, short life, poor compatibility, the use of the process will be unknown reasons extinguished. illegalThe bulb is generally worn down global or domestic installed in the lamp wick wick on the sale of merchant installed wick.

What's the market for advertising projection lights in China?

This is not applicable, low technology, easy to eliminate products although there is a market, but is believed to be in very quickly eliminated, such as projector 400 yuan, relatively speaking, more valuable and practical.