Concave lenses are one of the common lens types in the field of optics, and they play a key role in the manufacture of many important devices used in daily life. Concave lenses come in many types and are used in a wide variety of applications. Here is more information about concave lenses, including the different types and how they are used.
What is a concave lens?
A concave lens is a lens that bends light inward, thus producing an image that is smaller and more vertical than the original image. They can create real or virtual images and have at least one inwardly curved surface. Concave lenses are also called diverging lenses because they have convex edges and a spherical center, causing the light rays to diverge rather than focus.
Types of concave lenses
Biconcave lenses
Also called biconcave lenses, they have equal radii of curvature on both sides, which can deviate the incident light and are commonly used in myopia correction with glasses.
Plano-concave lenses
Having one plane and one concave surface, plano-concave lenses have a negative focal length and are commonly found in optical instruments and scientific experiments.
Convex-concave lens
It contains a convex surface and a concave surface. The curvature of the convex surface is higher than that of the concave surface. The center of the lens is thickest. It is often used to adjust the beam of laser beams and flashlights.
Applications of concave lenses
Corrective lenses
Used to correct myopia and diffuse light to improve vision. They are commonly found in glasses and contact lenses.
Laser
Used to adjust and disperse the laser beam to suit different application needs, such as scanners, medical equipment, etc.
Flashlight
Increases light output, focusing light on one side and diverging on the other, widening the diameter of the beam.
Concave lenses are widely used in various devices such as cameras, telescopes, microscopes, and medical equipment. If you have further interest in concave lenses and their applications, please contact us for more product information.
Summarize
Everything you need to know about concave lenses. They are lenses with at least one surface curved inward. These lenses bend light inward, making the image appear upright and smaller. You can find them used in a variety of devices such as cameras, flashlights, telescopes, and more.