SLSQ-15B-40P Spherical Biconvex Lens

[Features]
· With both faces convex, this lens can efficiently refract light in a restricted space, and collect large quantities of light.
· It is used to collect collimated light at as short a distance as possible or to gather as much light radiated from a light emitting point as possible.
· A synthetic quartz lens with high laser yield strength that can also be used for ultraviolet radiation of 350 nm or less.
· Selection can be made from a wide range of variations subdivided by outer diameter, focal distance, and so on, to suit the specifications.
· Achromatic lens (DLB) subjected to chromatic aberration correction is also available.
· * Spherical surface biconvex lenses have chromatic aberration, resulting in focal lengths changing with wavelength.
· * Biconvex lenses have larger spherical aberration than planoconvex lenses, and as such the focal spots may not converge into one point.
· * Non-coated products have loss due to reflections at the front and rear surfaces, with a transmittance of about 90%.
[Product Specifications]
· [ Common Specifications]
· Material: Synthetic Quartz
· Design Wavelength: 546.1 nm
· Refractive Index: n e = 1.460
· Coating: Non-Coated
· Effective Diameter: 90% of External Diameter
· Scratch-Dig: 20-10 φ10 mm ≤ D, 40-20 D < φ10 mm
· [Individual Specifications]
· Outer diameter φD: φ15 mm
· Focal distance f: 40.6 mm
· Rim thickness te: 2 mm
· Central thickness tc: 3.5 mm
· Back focus fb: 39.4 mm
· Radius of the curvature r: 36.8 mm
· Eccentricity: < 1'