SLB-50.8-150PIR2 Convex Lens

[Features]
· With a simple shape, this is a lens for use in laser experiments with somewhat reduced spherical aberration.
· Can be used for condensing laser light in detectors, conducting imaging experiments with monochromatic light sources, etc..
· A BK7 lens for the visible range to the near infrared range.
· Three types of lenses with antireflection coating in the visible range, near-infrared range, and infrared range are available.
· 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 planoconvex lenses have chromatic aberration, resulting in focal lengths changing with wavelength.
· * The planoconvex lens has an orientation for light incidence.
· * Be sure to have parallel light incident from the convex surface.
· * When reversed, spherical aberration may increase and the condensing spot may widen or images may be out of focus.
· * 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: BK7
· Design Wavelength: 546.1 nm
· Refractive Index: n e = 1.519
· Coating: Anti-reflective Film (750-1,550 nm)
· Transmittance: > Average 98.5%
· Laser Yield Strength (Reference Value): Anti-reflection Coating 4 J/cm^2 (Pulse Width 10 ns, Repetition Frequency 20 Hz)
· Effective Diameter: 85% of External Diameter
· Scratch-Dig: 20-10
· [Individual Specifications]
· Antireflection Film Coating Wavelength Region: 750-1,550 nm
· Outer diameter φD: φ50.8 mm
· Focal distance f: 150 mm
· Rim thickness te: 2.8 mm
· Central thickness tc: 7.1 mm
· Back focus fb: 145.3 mm
· Radius of the curvature r: 77.85 mm
· Eccentricity: < 1'