Achromatic doublets lenses
Achromatic doublets lenses
Achromatic lens, also referred to as an achromat, typically consists of two optical components cemented together, usually a positive low-index (crown) element and a negative high-index (flint) element. Compared to a single lens, the spherical aberration of achromatic lenses is much smaller.
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Plano-concave cylindrical lens
Plano-concave cylindrical lens
Plano-concave cylindrical lenses are commonly used to convert collimated laser sources into linear light sources, while plano-convex cylindrical lenses are commonly used for beam expansion applications.
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Plano-convex cylindrical lens
Plano-convex cylindrical lens
Plano-convex cylindrical lenses only focuses in one direction and has no focusing function in the other direction. The external dimensions of a plano-convex lens are similar, but only limited to a spherical mirror on one profile. A cylindrical lens can transform the light emitted by a luminous point into a line, and by placing two flat convex lenses perpendicular or intersecting with each other, surface light can be generated. The total focal length is the sum of each focal length.
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BK7 Double-Concave Lenses
BK7 Double-Concave Lenses
Double concave lens(DCV) is similar with plano concave lens. The focus length is negative. It can make parallel light diverge outside. The two sides have same radius of curvature. Double convex lens generally used for expanding beam of light and projection etc. BK7 double concave lens has excellent transmittance from visible to near infrared wavelength (350-2000nm).
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BK7 Double-Convex Lenses
BK7 Double-Convex Lenses
BK7 double-convex lenses(DCX) has excellent transmittance during 350nm-2000nm and usually used in finite imaging application. We usually adopt BK7 glass when it’s not necessary to use the advantage of UV grade fused silica.
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BK7 Plano-Concave Lenses
BK7 Plano-Concave Lenses
BK7 Plano concave lens(PCV) is mainly used in diverging parallel light. BK7 material has high transmittance from visible light to near infrared(350-2000nm). When don’t need the feature of uv silica material, often use this type in laser and telescope application.
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BK7 Plano-Convex Lenses
BK7 Plano-Convex Lenses
Plano convex lens(PCX)  is mainly used in focusing parallel light or transfer spot light to parallel light. BK7 Plano convex lens has high transmittance from visible light to near infrared(350-2000nm).
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UV Grade Fused Silica Double Concave Lenses
UV Grade Fused Silica Double Concave Lenses
UV fused silica double concave lens(DCV) has better uniformity and lower thermal expansion coefficient compared with BK7 double convex lens. It has high transmittance from ultraviolet to near infrared wavelength(185-2100nm).
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