Why can mobile phones detect whether the remote control is broken| Love to play computer games - 上海419贵族宝贝-上海后花园1314-上海品茶网-阿拉爱上海

In the past, when I was repairing household appliances, I saw the maintenance personnel use the lens of their mobile phones to check the remote control. The mobile phone can also detect whether the remote control is broken? Yes, the general maintenance personnel will press the button of the remote control, and then use the lens to aim at the infrared LED of the remote control. If the infrared LED of the remote control does not light up, it can basically prove that the remote control is broken. You can also try this in the future when you have problems with the remote control at home.

Why can the mobile phone see the remote control light but the flesh man can't see it? Light has different wavelengths. The visible light range of the human eye is between 380nm-780nm, while the light emitted by the remote control belongs to infrared light. The wavelength of light is outside the visible light range, and the light in this wavelength range cannot be seen by the human eye. However, the sensitive elements of digital cameras and mobile phones can receive infrared light and can be used for imaging.

Does it mean that the mobile phone has night vision ability if it can receive infrared rays? Even the perspective function? Hehe, don't think too much. It's not so easy to take pictures of others' perspective clothes.

Generally, under normal circumstances, infrared imaging and visible imaging are very weak, and all images will be covered by visible light, so you can't take perspective equipment.

In addition, these infrared lights will inevitably affect the imaging of the camera. The subject has different reflection and absorption properties for visible light and non visible light. The low light area in visible light may be the strong reflection area of infrared light. If visible light and infrared light are imaged at the same time, the combined effect will reduce the contrast of the picture and produce fog. In order to restore the effect seen by the naked eye to the greatest extent, the camera usually adds an infrared cut-off filter ICF in front of the lens. But these ICF filters can't block all the infrared rays, so you can still see them by pointing the phone lens at the remote control.

From the perspective of real restoration, of course, it is best not to see the remote control light on when you shoot with your mobile phone. In our test, we tried several mobile phones and found that most of the lights were on, including K860i, vivo x1, and Ulike2. Even the MX2 with blue glass was also on, but only the iPhone 4S and iPhone 5 on hand were not on. Is the iPhone really so awesome.

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