61-6947-51 Focusing Lens For Fiber Laser Focal Length 20mm HFTLSQ-15-20PF1
Analyzer, Testing Equipment

61-6947-51 Focusing Lens For Fiber Laser Focal Length 20mm HFTLSQ-15-20PF1

model: 61-6947-51
brand: SIGMAKOKI CO., LTD.

Product Description

Product Model: 61-6947-51Product Brand: SIGMAKOKI CO., […]

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Product Details

Product Model: 61-6947-51
Product Brand: SIGMAKOKI CO., LTD.

Features

  • By using synthetic quartz as the lens material, we have realized a condensing lens that can withstand high-power lasers and high-energy pulsed lasers.
  • It can be ***d for focusing and collimating various solid-state lasers such as Yb fiber laser, YAG laser, YVO4 laser, etc.
  • For lenses with a focal length of 60 mm or more, spherical aberration and coma aberration are sufficiently corrected at a wavelength of 1064 nm, and the laser collimated light can be narrowed down to a spot diameter that is almost diffraction limited.
  • The wide band antireflection coating allows it to be ***d in fiber coupled lasers in the 1040~1150 nm wavelength range.
  • Since a certain transmittance of 632.8 nm is obtained, a He-Ne laser can be ***d as a guide light.
  • A special lens holder (LHF-M29-25, LHF-M34-30, LHF-M50.9-50) is available for fixing the condenser lens.
  • The HFTLSQ-15-20 PF1 comes with a special adapter for attaching to the fixed condenser lens holder (LHF-M29-25).
  • The HFTLSQ-20-30 PF1 comes with a special adapter for attaching to the fixed condenser lens holder (LHF-M34-30).
  • Protective glass, sold separately, can be installed to protect the lens from laser beam machining.
  • * Use the condenser lens when you want to focus an object at infinity, or when you want to *** the point light source as parallel light.
  • Sufficient optical performance cannot be obtained when the camera is ***d for close-range imaging.
  • * The condenser lens has an orientation that allows light to enter.
  • * Be sure to allow parallel light to enter from the upper side (look at the engraving on the side of the lens barrel upright).
  • * Doing so can ca*** chromatic aberration and spherical aberration to become large, which can increase the size of the focus spot, and can ca*** blurred images.
  • Chromatic aberration and transmittance are reduced when the camera is ***d outside the specified wavelength range.
  • * When using with a high power laser or near a high heat source, the focusing lens may become hot and the focal length of the focusing lens may change.
  • * Heat dissipation measures are necessary when irradiating for a long time.
  • * If you want to reduce the condensing spot diameter, widen the incident beam diameter (1/e^2) to about half the effective diameter (De) of the condensing lens.
  • * This condenser lens is not an achromatic lens.
  • Chromatic aberration is not corrected.

Spec

  • [

    common specification]
  • Material: Synthetic quartz
  • Frame material: Aluminum surface treatment: Black anodic oxide
  • Design wavelength: 1064nm
  • Coating: Reflective prevention film
  • Transmittance: >98.5% (1060 - 1080nm) , >97% (1040 - 1150nm) , >53% (600 - 700nm)
  • Laser durability: 7J/cm2 (pulse width 10ns, Repeat frequency 20Hz)
  • [Individual specification]
  • Focus distance f: 20mm
  • Outer diameter φDc: φ24mm
  • Effective diameter φDe: φ12mm
  • Length L: 16mm
  • Screw for fixing Ma: M22 P0.75
  • Mounting screw Mb: M22 P0.75
  • NA : 0.3
  • WD : 13.7mm
  • Incident allowable angle: ±1.8°
  • RoHS conform product

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