AMADA INSTRUMENT CO.,LIMITED — Nanjing China
Stereo Microscope Barlow Lens

XSZ6745 0.3X Stereo Microscope Barlow Lens

The XSZ6745 0.3X Barlow lens extends the working distance of a stereo microscope by reducing the effective magnification.

Product Overview

The XSZ6745 0.3X Barlow lens extends the working distance of a stereo microscope by reducing the effective magnification. It fits between the objective and the microscope head, allowing a 1X objective to operate at 0.3X magnification while increasing the working distance from 100mm to 333mm. This enables inspection of large or deep components without moving the microscope head.

  • Magnification factor0.3X
  • Optical systemGreenough
  • Effective magnification (with 1X objective)0.3X
  • MaterialAluminium alloy
  • Surface finishAnodized black
  • Field of viewUnchanged by Barlow lens

Key Benefits

  • Increases working distance from 100mm to 333mm when used with a 1X objective
  • Reduces magnification to 0.3X, so the operator can see more of a large or deep component
  • Maintains stereo depth perception across the extended working distance
  • Allows inspection of large assemblies, PCBs with tall components, or deep cavities
  • No need to reposition the microscope or change objectives for larger workpieces

Application Scenarios

  • Inspecting a large PCB with tall components such as connectors, capacitors or heatsinks
  • Checking deep cavities in moulded parts or enclosures without moving the microscope
  • Performing rework on a large assembly where the soldering iron must be positioned far from the optics
  • Documenting the full layout of a complex module before disassembly
  • Teaching students how to locate components on a large board using a single, stable setup

Who It Is For

  • Electronics manufacturers doing SMD and BGA rework on large boards
  • Quality inspectors checking deep or large components in moulded assemblies
  • Teaching labs demonstrating component layout on full-size PCBs
  • Precision assembly workshops handling large or deep mechanical parts
  • Maintenance teams inspecting internal features of enclosures or housings

Problems It Solves

  • A standard 1X objective with 100mm working distance cannot reach deep or large components without moving the microscope
  • Operators must reposition the microscope or swap objectives to inspect large areas, increasing setup time
  • Loss of stereo depth perception when using a camera-only digital microscope for deep or large inspections
  • No way to extend working distance without changing the objective or stand
  • Inability to keep a soldering iron or probe clear of the optics when working on tall assemblies

Technical Features

  • 0.3X magnification reduction when used with a 1X objective
  • Increases working distance from 100mm to 333mm
  • Compatible with standard 23mm diameter microscope heads
  • Designed for use with Greenough stereo microscopes
  • Maintains binocular or trinocular stereo view across the extended range
  • No power or data interface required
  • No optical degradation at the edges of the field of view

Specifications

Magnification factor0.3X
Optical systemGreenough
Effective magnification (with 1X objective)0.3X
MaterialAluminium alloy
Surface finishAnodized black
Field of viewUnchanged by Barlow lens
Optical correctionAchromatic
InstallationScrew-on, no tools required

Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.

Customization Options

  • Available in standard 23mm diameter for compatibility with most stereo microscopes
  • No custom magnification or thread size options available
  • No surface finish variation beyond anodized black

Comparison With Other Options

Standard 1X objective without Barlow lensThe Barlow lens increases working distance from 100mm to 333mm but reduces magnification to 0.3X; use it when you need space, not detail.
0.5X Barlow lensThe 0.3X Barlow gives a greater working distance extension and lower magnification than the 0.5X, but the 0.5X preserves more detail at the cost of less reach.
Auxiliary objective (e.g. 0.5X)The Barlow lens is a passive optical element that fits in the head; an auxiliary objective is a separate lens that mounts below the head and changes the optical path differently.
Answers

Frequently Asked Questions

What is the working distance with the XSZ6745 Barlow lens?

333mm when used with a 1X objective. The standard 1X objective has 100mm working distance; the Barlow increases it by a factor of 3.3.

Can I use this Barlow lens with a 0.5X objective?

No. The lens is designed for use with a 1X objective. Using it with other objectives will not produce the specified magnification or working distance.

Does the Barlow lens affect image quality?

No. The lens is achromatic and precision-ground to maintain image clarity across the field of view.

Is the lens compatible with all stereo microscopes?

It fits standard 23mm diameter microscope heads. Confirm your head's thread size before ordering.

Do I need to re-focus after installing the lens?

Yes. The optical path changes slightly; re-focus the microscope after mounting the Barlow lens.

Can I use this lens with a digital camera?

Yes. The Barlow lens is mounted in the optical path before the camera; it does not interfere with digital imaging.

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