Kunshan Noli Optical introduction: Types and models of optical lens processing

Optical lenses are usually made of glass or plastic surface of the spherical optical elements, our company's production of lenses mainly convex lens and concave lens two kinds. Optical lens is the use of optical refraction principle in the optical system to achieve: light polymerization, light dispersion, optical imaging; Optical lenses A composite lens designed from multiple lenses can be optimized for color correction, correcting spherical aberrations, etc.

Plano-concave lens

Plano-concave lens is the parallel light emitted outward, the plano-concave lens focal length is negative, the spherical aberration is also negative, can be used to correct the difference, spherical aberration, coma, distortion of other lenses. Similar to the flat concave mirror, the side is generally facing away from the object or infinity. Our plano-concave lenses are usually made of K9 glass, and their anti-reflection coatings are for the wavelength range of 400-700 nm. There are also ultraviolet quartz as the substrate processing, when the ultraviolet quartz as the substrate, in the ultraviolet region has a good transmittance and low thermal expansion coefficient, can be plated ultraviolet AR film with special circumstances.

Plano-convex lens

Plano-convex lenses are ideal for focusing parallel rays to a single point, and these lenses can be used for a variety of applications. They have a positive focal length, and for conjugate applications at infinite and finite distances, they have a near optimal shape. Plano-convex lenses can focus collimated beams at the rear focal point, or they can turn a point source into a collimated beam. Our plano-convex lenses are usually made of K9 glass, and their anti-reflection coating is for the wavelength range of 400-700 nm. There is also the use of ultraviolet quartz as the substrate processing, when the ultraviolet quartz as the substrate, in the ultraviolet region has a good transmittance and low expansion coefficient, can be plated ultraviolet AR film with special cases of use.

Convex lens

A convex lens has a normal focal length and can also focus parallel beams. Since the front and back surfaces of convex lenses are convex spheres with the same curvature radius, convex lenses can significantly reduce spherical aberration and improve coma and distortion in applications where the object distance is equal or approximately equal. When the conjugate ratio is between 5:1 and 1:5, the aberration introduced by the convex lens is the smallest.

Double bonded achromatic lens

A double-bonded achromatic lens consists of a positive lens with a low refractive index (crown glass) and a negative lens with a high refractive index (flint glass). The paraxial aberrations such as spherical aberration, coma aberration and chromatic aberration have been corrected well by computer optimization. When used to focus collimation, the convex lens or the surface of small curvature radius usually faces the collimation light. When used for imaging, the convex lens must face the side with the longer distance from the object or image.

Meniscus lens

Meniscus lenses, also known as convex and convex lenses, can reduce the spherical aberration, can produce a minimum collimation incident light focus, depending on the relative curvature of the two surfaces, meniscus lenses can be positive or negative lenses. A negative meniscus lens has a thinner center than its periphery, while a positive meniscus lens has a thicker center than its periphery.