61-6908-10 Biconvex Lens BK7 φ50.8mm Focal Length 52.7mm SLB-50.8B-50P
Analyzer, Testing Equipment

61-6908-10 Biconvex Lens BK7 φ50.8mm Focal Length 52.7mm SLB-50.8B-50P

model: 61-6908-10
brand: SIGMAKOKI CO., LTD.

Product Description

Product Model: 61-6908-10Product Brand: SIGMAKOKI CO., […]

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Product Details

Product Model: 61-6908-10
Product Brand: SIGMAKOKI CO., LTD.

Features

  • By making both sides convex, this lens can efficiently refract light in a small space and collect more light.
  • Use this function when you want to collect collimated light at the shortest distance possible or when you want to collect as much light as possible from the emission point.
  • 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 the wide variety of subdivided by outer diameter size and focal length.
  • Chromatic aberration corrected achromatic lenses (DLB) are also available.
  • * Spherical biconvex lenses have chromatic aberration, and the focal length dep***s on the wavelength.
  • * The spherical aberration of a biconvex lens is larger than that of a plano-convex lens, and the focus spot may not be concentrated at one point.
  • * 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: 52.7mm
  • Edge thickness te: 3mm
  • Center thickness tc: 16.3mm
  • Back focus fb: 47.1mm
  • Curvature half diameter r: 51.9mm
  • Eccentricity: <1′
  • RoHS conform product

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