plano concave lens video

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Product details

Plano concave lens is diverging lens. One of it's surface is flat whhile the other is an inwardly concave spherical surface.

The characteristic of concave lens is the edge are thick and the center is thin, therefore,it can not converge the light into a real image but instead causes the light to diverge outward

Properities

Negative focal length, after light passes through,it spreads out and appears to originate from a "virtual focus" in front of the lens

Imaging characteristics, it can only form a upright and magnified virtual image, and this virtual image is located on the same side as the object with respect to the lens, it can not be projected onto a screen and can only be observed through the lens.

Main purpose

Commonly used various applications including high precesion laser optics, medical image reduction,microscopy, telescopes and beam expansion etc

CCRQ can supply spherical lens including plano-convex lenses, double convex lens, plano-concave lenses, bi-concave lenses, positive meniscus lenses, negative meniscus, achromatic doublet lens and aspheric lens, please let us know your designa and drawing

AR coating covering from UV,VIS,NIR wavelength enhance light transmission and reduce reflection

Real-life applications

Binoculars and telescopes

Eye Glasses to correct nearsightedness

Cameras

Flashlights

Lasers(CD,DVD players )

How does concave lens work?

A concave lens is exactly the opposite with the outer surfaces curving inward, so it makes parallel light rays curve outward or diverge. A concave lens makes parallel light rays diverge (spread out) so that they appear to comee from a point behind the lens-the focal length.

A concave cylindrical lens is a divering lens, with it's surface being an inward-curving cylindrical surface. the characteristic of this lens is that only alters the light in one direction( the axial direction) while keeping the light unchanged in the perpendicular direction.

Mainly features

Negative focal length, after light pass through, it will spread outward

Asymmetric imaging,it's only function in one dimension. for isstance, a horizontally placed concave cylindrical mirror will cause light in the horizontal direction to diverge, but light in the vertical direction will pass through directly without being affected

Main Purpose

Cylindrical concave lens are available with positive or negative focal length, ideal for laser line generation or anamorphic beam shaping to circularize laser outputs.

Cylindrical concave lenses also known as negative cylindrical lenses, these focuses light into a line instead of a point, as a spherical lens would

Negative cylindrical lenses more used in bardcode scanning, projection optics systems and laser measurement systmes and optical instruments

AR coating optional available with UV, VIS, NIR region

Specifications

Substrate	K9, Fused silica, Sapphire, CaF2,Silicon, Germanium,Znse, ZnS, CDGM optical glass
Size	5-300mm
Thickness tolerance	+0/-0.1mm
Focal length tolerance	+/-1%
S/D	40/20
Surface Flatness	lambda/4
CA	>90%
Bevel	0.2*45degree
Centration	<3'
Coating	AR,BBAR,Metal Coating(Silver, Gold,Aluminum), Dielectric Coating upon request

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CCRQ Optics Co.,Ltd

Audited supplier

6 month

Main Product: Sapphire window , Spherical Lens, Optical mirror, Optical Prism, CaF2 window, Fused Silica Window

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