Thumbnail of Infinity-Corrected Visible to NIR 50x Objective Lens, NA 0.75, 420-680nm, 5.2mm WD, M Plan Apo photo 1

Description

This 50x M Plan Apo objective lens is a high-performance, infinity-corrected optical component designed for demanding laser processing, semiconductor inspection, and advanced optical microscopy. With a high numerical aperture of 0.75 and a wide spectral range of 420-680nm (Visible to NIR), it delivers exceptional focusing performance and imaging clarity for both laser delivery and coaxial observation.

Infinity-Corrected Visible to NIR 50x Objective Lens, NA 0.75, 420-680nm, 5.2mm WD, M Plan Apo

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Specifications

Magnification: 50
Numerical Aperture: 0.75
Focal Length: 4 mm
Working Distance: 5.2 mm
Design Type: Air Immersion
Wavelength Range: Visible
Weight: 470±5g
Wavelength Range: 430 - 680 nm
Mount: W26×0.706
Parfocal Distance: 95mm
Object Side Resolution: 0.38um
Depth Of Field: 0.49um
Entrance Pupil Diameter: 6mm
Manufacturer Part Number (MPN): OBJ-50X0.75-W26-WD5.2
FindLight SKU: FL-24791

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Features

  •  Infinity-corrected
  •  Plan design: full-field curvature correction
  •  Apochromatic design 
  •  Large numerical aperture (Large NA)
  •  Ultra-high resolution, approaching the diffraction limit
  • Large field of view, long working distance, broad spectral range (Visible + NIR)

Applications

  • Biological detection
  • Industrial inspection
  • Microscopy
  • Laser direct writing

Export & Trade Information

ECCN: EAR99
HTS Code: 9002.19.00
Estimated US Tariff: 25%

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Frequently Asked Questions

What is the numerical aperture of this 50X objective lens?
This 50X M Plan Apo objective has a numerical aperture of 0.75, providing high light-gathering capability and strong focusing performance. The high NA also supports an object-side resolution of approximately 0.38 µm.
What wavelength range is supported by this 50X objective?
The objective is designed for visible-light applications across a wavelength range of 420–680 nm, making it suitable for visible laser processing, optical inspection, microscopy, and imaging applications within this spectral range.
What is the working distance of the 50X M Plan Apo objective?
The objective has a 5.2 mm working distance. This provides clearance between the front of the objective and the sample or workpiece while maintaining the high numerical aperture required for high-resolution imaging and precision focusing.
What applications is this 50X objective suitable for?
This objective is designed for demanding optical microscopy, industrial inspection, semiconductor inspection, laser direct writing, and biological detection applications. Its high NA, apochromatic design, and infinity-corrected optical configuration make it suitable for systems requiring high-resolution imaging and precise optical focusing.
What does the infinity-corrected design of this 50X objective mean?
An infinity-corrected objective produces a nominally collimated beam between the objective and the microscope tube lens, allowing additional optical components to be incorporated into the system without significantly affecting the objective's imaging performance. This makes the objective suitable for modular microscopy and coaxial optical systems.

Got more questions? Use the inquiry form to ask the supplier directly.

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