A flat convex lens is a type of lens that is convex on one side and flat on the other. Its materials include K9 glass, fused silica, zinc selenide, zinc sulfide, germanium, silicon, lithium fluoride, magnesium fluoride, calcium fluoride and barium fluoride. So what is the difference between a planar convex lens and a biconvex lens?
Structural characteristics
A flat convex lens is a lens with a flat surface and a convex surface. A biconvex lens is a lens that protrudes on both sides and has two convex surfaces.
focal length
The focal length of a flat convex lens is usually short, typically within a range of a few centimeters. The focal length of a biconvex lens is longer, reaching several meters or even further.
Light action
A planar convex lens is used to converge parallel light or convert a point light source into parallel light, and has a positive focal length. Double convex lenses, on the other hand, are mainly used to diffuse light, causing it to diverge in various directions.
Imaging characteristics
The use of flat convex lenses can form inverted real images, while double convex lenses can only form upright virtual images. In photography, flat convex lenses are often used to adjust focal length, increase depth of field, and make images clearer. In a microscope, a flat convex lens is used to observe small objects and increase their magnification. Double convex lenses are commonly used to observe thin layer samples, such as biological sections.
application area
Planar convex lenses have a wide range of applications in beam expansion, imaging, beam collimation, focusing collimation, beam collimation point light sources, and so on. Double convex lenses are more commonly used in fields such as astronomical telescopes, microscopes, and magnifying glasses.
The above is an answer to the differences between flat convex lenses and double convex lenses. We hope it will be helpful to you. If you have any questions, please feel free to consult or leave a message online.
