61-6927-19 Aspheric Condenser Lens φ12mm Focal Length 8.5mm AGL-12-8.5P
Analyzer, Testing Equipment

61-6927-19 Aspheric Condenser Lens φ12mm Focal Length 8.5mm AGL-12-8.5P

model: 61-6927-19
brand: SIGMAKOKI CO., LTD.

Product Description

Product Model: 61-6927-19Product Brand: SIGMAKOKI CO., […]

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Product Details

Product Model: 61-6927-19
Product Brand: SIGMAKOKI CO., LTD.

Features

  • Aspherical condenser lenses for illumination can emit light for illumination at a large divergence angle (focusing angle).
  • It is ***d in high-magnification microscope illumination systems and optical systems that efficiently collect light from divergent light sources.
  • A large divergence angle (focusing angle) of approximately NA0.5 has been achieved with a single lens by using an aspherical shape on one side.
  • Available in a variety of outer diameter sizes, from compact with a small aperture to large-aperture lenses with a longer back focus.
  • It can be ***d in a wide range from the visible range to the infrared range with a wavelength of 2 μm.
  • B270 (R) is a registered trademark of SCHOTT AG.
  • * When parallel light is incident from the back (plane) side, spherical aberration is large and light does not converge to one point.
  • * Since an aspheric condenser lens is a single lens, the focal length varies dep***ing on the wavelength.
  • * Aspherical condenser lens is ***d for lighting.
  • * This is not an aberration-free lens for laser focusing.
  • * Since the lens is not coated with an anti-reflection film, the transmittance of the lens is less than 90% due to the loss ca***d by reflection of the front and back surfaces of the lens.
  • * As this is a pressed product, there may be dents or scratches ca***d by sink marks outside the valid range.

Spec

  • [

    common specification]
  • Material: B270(R) (n d=1.523)
  • Shape: Surface nonspherical surface, Back flat face or sphere surface
  • Coating: No coat
  • Maximum operating temperature: 170℃
  • Scratch - dig: 80-50
  • Effective diameter: 80% of the outer diameter
  • [Individual specification]
  • Outer diameter φD: φ12mm
  • Focus distance f*2: 8.5mm
  • Back focus fb*2: 5.8mm
  • NA*1 (D/2 x 0.8/f) : 0.56
  • Edge thickness te: 1.6mm
  • Center thickness tc*2: 5.5mm
  • Back: Sphere surface
  • *1 NA is calculated using the 80% of the outer diameter of lens.
  • *2 Due to pressing products, Individual difference may vary with the product. Use with enough margin.
  • RoHS conform product

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