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S-SLB-30-40PM Spherical Planoconvex Lens

S-SLB-30-40PM Spherical Planoconvex Lens

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[Features]
· A product with surface quality one level below the spherical convex lens (SLB-P).
· Usable for optical systems that do not require high surface quality, such as for lighting or observation.
· Specifications other than the surface quality are almost the same as the spherical convex lens (SLB-P).
· With the exception of high-precision experiments using lasers, we recommend this lens.
· A plano-convex lens with little spherical aberration.
· In addition to the non-coated product, three types of lenses with anti-reflective coating for the visible range, near-infrared range, and infrared range are 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
· Eccentricity: < 3'
· Coating: Anti-reflective Film (400-700 nm)
· Transmittance: > Average 99%
· Laser Yield Strength (Reference Value): 4 J/cm^2 (Pulse Width 10 ns, Repetition Frequency 20 Hz)
· Effective Diameter: 85% of External Diameter
· Scratch-Dig: 60-40
· [Individual Specifications]
· Antireflection Film Coating Wavelength Region: 400-700 nm
· Outer diameter φD: φ30 mm
· Focal distance f: 40 mm
· Rim thickness te: 2 mm
· Central thickness tc: 8.4 mm
· Back focus fb: 34.5 mm
· Radius of the curvature r: 20.76 mm
· RoHS-Compliant Product

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Part Number : 61-6952-83
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