Some related knowledge of optical lens

An optical lens is an optical element made of a transparent material whose surface is a part of a spherical surface, and the lens is composed of several lenses. In fact, it can be widely used in security, car, digital cameras, lasers, optical instruments and other fields. Here are some related knowledge points of optical lenses for everyone?

An optical lens is an optical element made of a transparent material such as glass, crystal, etc. At this time, we need to know that the lens is a refractor, and its refractive surface is a transparent body, with two spherical surfaces (part of a spherical surface) or a spherical surface (part of a curved surface), and a plane. Its images have both real images and virtual images. It has high transparency, high purity, colorless, uniform texture and good refractive power. It is the main raw material for lens production. In use, we need to know that lead oxide is added to the glass composition to increase the refractive index. Sodium oxide and calcium oxide are added to the glass composition to lower the refractive index (the refractive index of barium crown glass is 1.7055). In addition, optical lenses are mainly used to find varieties. It has the excellent characteristics of high refractive index and low dispersion, which provides conditions for the manufacture of large aperture advanced lenses. The principle is that the glass or plastic parts used in the lamp can change the direction of light or control the distribution of light. The optical lens is the most basic optical element in the microscope optical system. The objective lens, eyepiece and condenser are composed of a single lens and a multi-lens.

The light shape of the optical lens is the most standard, and there can be very obvious light and dark cutting lines to solve the problem of astigmatism through the action of light. In foreign countries, xenon lamps are used in standard lenses. This mirror belongs to optical lenses. We call it "lens". Of course, when manufacturers produce, they naturally use it, and the advantage of light dissipation is small. A professional xenon headlight modification master recommend a friend who drives HID headlights without a lens. For your own safety and the safety of others, adding a lens is a good choice. The optical lens has a strong light gathering ability, so when it is used to illuminate the road surface, the road surface is not only bright, but also clear. The optical lens we are talking about today is mainly because the light dispersion is very small, so its optical path is longer and clearer than ordinary halogen lamps. So you can see things in the distance the first time and avoid crossing the road or missing the target. So what you need to understand is that compared with the headlights of traditional lamp holders, the headlights of its lens lamp holders have uniform brightness and strong penetration, so whether it is rainy or foggy, the optical lens has strong penetration. In this way, oncoming vehicles can receive light information at the first time to avoid accidents. The life of the built-in HID bulb is 8 - 10 times that of ordinary bulbs, thereby reducing the unnecessary trouble of replacing the bulb.

The content of the above article is a brief introduction to some relevant knowledge points about optical lenses, mainly about its role and function. If you don't understand, please read it quickly, hoping to bring help to relevant people. Here also thanks to read my article content so friends.