37MM 0.45X Super Wide Angle Fish Eye Lens Macro Fisheye

Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.

 Product Name NO.10.45x ultra wide-angle + macro two-in-one lensProduct Description:Mobile phone universal 49mmUV super wide-angle + macro lensEffectively solve the problem of vignetting of wide-angle lenses on some mobile phonesThis is an external lens dedicated to professional photography equipment such as digital DV/DC, with a cool appearance, precise parameters and fine imaging effects. Through a multi-functional mobile phone adapter clip, connected to the mobile phone, the shooting angle of the mobile phone can be expanded by 60% without any damage to the shooting image quality of the mobile phone. The lens adopts high-quality optical glass + multi-layer optical coating, which effectively solves the defects of clear middle and blurry edges when taking pictures with external mobile phone lenses. The 49mm UV port ensures sufficient light transmittance, which not only ensures the brightness of the picture, but also effectively guarantees the clarity of the picture quality. As a compact and convenient professional lens, it not only has professional-grade powerful effects, but also has much more convenient portability than camera replacement lenses. The equipped 37mm mobile phone adapter clip is directly clipped to the camera of the mobile phone after the lens is installed, allowing your mobile phone to become a SLR in 1 second. Today, mobile phone photography has become the mainstream, this is definitely the companion of mobile phone photography, when you pick up this super wide-angle mobile phone to take pictures, you will immediately become the focus. Lens parameters:Interface: 37mmFront port diameter: 49mmOptical structure: 2 groups of 2 elementsLens size: 25mm*50mmLens material: aluminum alloy + optical glass Lens accessories:0.45X 49mmUV wide-angle + macro lens: 1Front lens protective cover: 1Interface lens protective cover: 1Leather lens storage bag: 1 PS: The wide-angle lens 0.45x and 0.67x are the magnification values, the smaller the number, the wider the angle 

   Product Name NO.23 in 1, 0.67x Fish eye+Wide Angle+Macro with clipSize: Fisheye 2.5*2.5*1.4CM, Macro 1.8*1.8*0.5, Wide Angle 2.0*2.0*0.5, Special Clip Size 5.3*2.1*2.4CMMaterial: aluminum alloy + optical glass  

 

 

 

 

Product Name NO.3

Advanced version of mobile phone lens set anti-distortion wide-angle macro CPL polarization dimming gradient filter general purpose SLR

Size: 52mm

Color: Multicolor

Material: Optical resin