Product Knowledge
Lens positive and negative judgment
It is not rigorous to judge the positive and negative focal length of the lens simply by looking. If you have to “look”, judge by
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Product Knowledge
Is the camera a convex lens or a concave lens
Camera is a kind of equipment that uses the principle of optical imaging to form images and use negatives to record images. It is an
Product Knowledge
Concave lens imaging law
The imaging law of concave lens is: when the object is a real object, it becomes an upright and reduced virtual image, and the image
Product Knowledge
Do convex lenses diverge or converge
Convex lens is a convergent line, so it is also called convergent lens, and concave lens is a divergent light, also known as divergent lens.
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Convex lens in general life
1.1 human eyes with convex lens Schematic diagram of human eye imaging is the image formed by human eyes a real image or an imaginary
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What effect does a convex lens have on light?
I believe that students have encountered such problems as “whether reading glasses are convex lens or concave lens” when doing questions. Convex lens is the
Product Knowledge
Difference between flat convex lens and biconvex lens
A biconvex lens. Light incident on both sides has the same refractive index. The focal length is the same. The light incident on both sides
Technical Knowledge
Optical reflection film
Optical reflective films can generally be divided into two categories: metal reflective films and all dielectric reflective films. In addition, there is a metal dielectric
Technical Knowledge
optical Antireflection film
Antireflection film, also known as antireflection film, its main function is to reduce or eliminate the reflected light on the optical surface such as lens,
Technical Knowledge
Coating technology of optical lenses
No matter the glasses made of inorganic or organic materials, in daily use, the friction with dust or gravel (silicon oxide) will cause lens wear