61-6893-64 Plano Convex Lens BK7 φ50.8mm Focal Length 70mm SLB-50.8-70P
Analyzer, Testing Equipment

61-6893-64 Plano Convex Lens BK7 φ50.8mm Focal Length 70mm SLB-50.8-70P

model: 61-6893-64
brand: SIGMAKOKI CO., LTD.

Product Description

Product Model: 61-6893-64Product Brand: SIGMAKOKI CO., […]

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Product Details

Product Model: 61-6893-64
Product Brand: SIGMAKOKI CO., LTD.

Features

  • A lens for laser experiments with a simple shape and slightly reduced spherical aberration.
  • It can be ***d to focus laser light on a detector or for imaging experiments using a monochromatic light source.
  • A lens made by BK7 for the visible to near-infrared range.
  • Three types of lenses with anti-reflection film are available in the visible, near-infrared and infrared ranges.
  • It can be selected according to your specifications from a wide range of variations, subdivided by outer diameter size and focal length.
  • Chromatic aberration corrected achromatic lenses (DLB) are also available.
  • * Spherical plano-convex lenses have chromatic aberration, and the focal length dep***s on the wavelength.
  • * Plano-convex lenses allow light to enter.
  • * Be sure to allow parallel light to enter from the convex side.
  • * Doing the reverse operation will ca*** the spherical aberration to increase, which can ca*** the focus spot to increase and can ca*** blurred images.
  • * The transmittance of the uncoated product is about 90% due to the loss ca***d by the reflection of the front and back of the lens.

Spec

  • [

    common specification]
  • Material: BK7
  • Design wavelength: 546.1nm
  • Refractive index: n e=1.519
  • Coating: No coat
  • Effective diameter: 90% of the outer diameter
  • Scratch - dig: 20-10
  • [Individual specification]
  • Reflective prevention film coat wavelength region: No coat
  • Outer diameter φD: φ50.8mm
  • Focus distance f: 70mm
  • Edge thickness te: 3mm
  • Center thickness tc: 13.4mm
  • Back focus fb: 61.2mm
  • Curvature half diameter r: 36.33mm
  • Eccentricity: <1′
  • RoHS conform product

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