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High-Power Focusing Objective Lenses 20x NIR

HPOBL-20-NIR

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An air gap type objective lens with a parfocal distance of 45mm that does not use adhesive to bond the lenses. All lens materials used are synthetic fused silica. They can be used for focusing and collimating high power lasers.
  • Spherical aberration and coma are sufficiently corrected for visible to near-infrared monochromatic light, and collimated laser light can be focused to the spot diameter up to the diffraction limit.
  • The wide AR coating of 980 to 1100nm allows the use of lasers of various wavelengths within the band. In addition, since it transmits to some extent even at 632.8nm, a He-Ne guiding laser can be used.
  • To take advantage of the excellent focusing performance obtained on the optical axis, it is recommended that the object side be moved.
  • To protect the lens from laser-processed splashes, a replaceable protective glass is an option for the 10x objective lens. (The 20x objective lens originally has a protective glass attached to the product.)
More Information
Name High-Power Focusing Objective Lenses 20x NIR
Weight 0.0450kgs
Standard Coatings Available No
Guide
  • Objective lenses with a different wavelengths (visible to near- infrared) for AR coating, are also available as option.
  • A lens holder for objective lens fixation LHO-20.32, and an objective lens adapter TAT-18OA that can be used to fix the objective lens on the two-axis optics holder (TAT) are available.
  • For use as a microscope for laser processing, an observation unit with coaxial illumination OUCI-3(NIR) and a dichroic block for laser introduction DIMC-1064R are available.
Attention
  • When used with a high-power laser or near a light source that produces heat, the focal length has possibility to change due to the high temperature of the lens.
  • If the incident beam diameter is too thin, the spot diameter will not be focused enough.
  • Chromatic aberration will not be corrected for lens configurations consisting of synthetic fused silica only.
Focal length 10mm
Magnification 20×
Numerical Aperture 0.4
Working Distance WD 5.2mm
AR coating wavelengths 980 - 1100 nm
Real field of View ( Eyepiece φ24 mm ) 0.7 mm
Pupil diameter 8 mm
focal depth 4.1 μm
Resolution 1.33 μm
Laser Damage Threshold 10 J/cm2
( Laser pulse width 10ns, repetition frequency 20Hz )
In stock
SKU
HPOBL-20-NIR
₹208,798.00

Delivery in : 6-12 weeks

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An air gap type objective lens with a parfocal distance of 45mm that does not use adhesive to bond the lenses. All lens materials used are synthetic fused silica. They can be used for focusing and collimating high power lasers.