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95mm parfocal objective | SIMTRUM Photonics Store

Products / Microscopes /Objective Lens /Long Working Distance Objectives /95mm parfocal objective /
95mm parfocal objective
Overview Specifications Application Principles & Advantages FAQ Order Now
The 95 mm parfocal objectives from SIMTRUM are designed with a 95 mm parfocal length, ensuring that the focal plane remains at the same position when switching between different magnifications. This allows users to change objectives with virtually no need for refocusing.
Dimensions

Items CXF20095005 CXF20095010 CXF20095020 CXF20095050
Optical System Infinity-corrected Infinity-corrected Infinity-corrected Infinity-corrected
Observation Method Brightfield Brightfield Brightfield Brightfield
Chromatic Aberration Correction Semi-apochromatic Semi-apochromatic Semi-apochromatic Semi-apochromatic
Magnification [X] 5X 10X 20X 50X
Focal Length [mm] 40 20 10 4
Field Number [mm] 25 25 25 25
Numerical Aperture (NA) 0.15 0.3 0.35 0.5
Entrance Pupil Diameter [mm] 12 12 7 4
Working Distance (WD) [mm] 44.2 33 28.8 16
Depth of Focus (μm) 2.7 6.1 4.5 2.2
Depth of Field (μm) 45 15 4.5 1.1
Resolution (μm) 2.3 1 1 0.6
Cover Glass Thickness [mm] - - - -
Spring Protection - - - -
Parfocal Distance [mm] 95 95 95 95
Thread M26X1/36” M26X1/36” M26X1/36” M26X1/36”
The resolution and depth of focus of the objectives are calculated based on a reference wavelength (λ=550nm) 550 550 550 550

Our 95 mm parfocal objectives are highly suitable for the following applications:

  • Industrial laser processing and machining
  • Machine vision and automated inspection
  • Precision measurement and metrology

Parfocal design relies on precise optical and mechanical engineering to ensure that the image planes of all objectives are positioned at the same fixed location, typically aligned with the eyepiece tube or camera port. When the nosepiece is rotated to switch objectives, this mechanical movement simultaneously drives a compensating lens inside the higher-magnification objectives to shift slightly. This adjustment actively fine-tunes the effective focal length and image distance of the objective, allowing its image plane to coincide precisely with that of the lower-magnification objectives.

Q: How should I choose the appropriate numerical aperture (NA)?

A: Numerical aperture primarily affects resolution, light-collection efficiency, and working distance. Higher NA provides higher resolution and stronger light-gathering capability (leading to brighter images), but it also results in a shorter working distance, shallower depth of field, and higher cost.


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Compare Model Drawings & Specs Availability Reference Price
(USD)
CXF20095005
Working Distance (WD) [mm]:44.2；Numerical Aperture (NA):0.15；Magnification [X]:5X；Focal Length [mm]:40 		Contact us Request for quote
CXF20095010
Working Distance (WD) [mm]:33；Numerical Aperture (NA):0.30；Magnification [X]:10X；Focal Length [mm]:20 		Contact us Request for quote
CXF20095020
Working Distance (WD) [mm]:28.8；Numerical Aperture (NA):0.35；Magnification [X]:20X；Focal Length [mm]:10 		Contact us Request for quote
CXF20095050
Working Distance (WD) [mm]:16；Numerical Aperture (NA):0.50；Magnification [X]:50X；Focal Length [mm]:4 		Contact us Request for quote

CXF20095050 - Parameter

CXF20095020 - Parameter

CXF20095010 - Parameter

CXF20095005 - Parameter

CXF20095050 - Download

CXF20095020 - Download

CXF20095010 - Download

CXF20095005 - Download

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Compare Model Drawings & Specs Availability Reference Price
(USD)

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