Lens
Plano-convex lens: under this heading, the source describes a right-angle prism acting as a 90° mirror by total internal reflection (TIR). Light enters one perpendicular face, reflects at the hypotenuse glass-air interface, and exits the other, deflected by 90° as an alternative to a mirror. Plano-concave lens: one flat and one concave face, thinner at the center, with negative focal length to diverge parallel light from a virtual focus. Uses include collimation, increasing or decreasing focal length, and enlarging or reducing images. Biconvex lens: two convex faces, with the source describing a longer focal length in the central section; positive focal length converges light to a point, collects point-source light, or relays images. Biconcave lens: concave faces, thin center, thick edges, negative focal length, and equal side radii increase divergence for beam expansion or projection. Meniscus lens: one convex and one concave face, converging or diverging according to refractive index, curvature, and radius. Achromatic lens: two different materials focus two colors at one point to correct chromatic aberration.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Surface Finish [Plano-Convex Lens] | 40-20 |
| Surface Fringes [Plano-Convex Lens; 633nm] | N-3；△ N-0.5 @633nm |
| Coating R [Plano-Convex Lens] | R<0.25% |
| Surface Finish [Plano-Concave Lens] | 40-20 |
| Surface Fringes [Plano-Concave Lens; 633nm] | N-3；△ N-0.5 @633nm |
| Coating R [Plano-Concave Lens] | R<0.25% |
| Surface Finish [Biconvex Lens] | 40-20 |
| Surface Fringes [Biconvex Lens; 633nm] | N-3；△ N-0.5 @633nm |
| Coating R [Biconvex Lens] | R<0.25% |
| Surface Finish [Biconcave Lens] | 40-20 |
| Surface Fringes [Biconcave Lens; 633nm] | N-3；△ N-0.5 @633nm |
| Coating R [Biconcave Lens] | R<0.25% |
| Surface Finish [Meniscus Lens] | 40-20 |
| Surface Fringes [Meniscus Lens; 633nm] | N-3；△ N-0.5 @633nm |
| Coating R [Meniscus Lens] | R<0.25% |
| Surface Finish [Achromatic Lens] | 40-20 |
| Surface Fringes [Achromatic Lens; 633nm] | N-3；△ N-0.5 @633nm |
| Coating R [Achromatic Lens] | R<0.5% |
Datasheet
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