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20X 120i Plan APO Infinity Corrected Objectives

#15-944: 20X 120i Infinity Corrected Objective

#15-944: 20X 120i Infinity Corrected Objective

Stock #15-944 New In Stock
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Note: This item requires accessories for use | Learn More
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Horizontal Field of View, 1/2" Sensor:
Horizontal Field of View, 2/3" Sensor:
Horizontal Field of View, 1" Sensor:
Focal Length FL (mm):
Length (mm):
Length excluding Threads (mm):
Maximum Diameter (mm):
Numerical Aperture NA:
Mounting Threads:
1" x 32 TPI
Compatible Tube Lens Focal Length (mm):
Focal Length: 120mm
Microscope Objective
Resolving Power (μm):
Depth of Field (μm):
Operating Temperature (°C):
+10 to +40
Working Distance (mm):
Weight (g):
Wavelength Range (nm):
400 - 700
Infinity Corrected
Edmund Optics®
Field Number (mm):
Parfocal Length (mm):

Regulatory Compliance

Certificate of Conformance:

Product Family Description

  • C-Mount Threading for Easy System Integration
  • Designed for Use with 120mm Tube Lens
  • Ideal for Life Science and Industrial Applications
  • Winner of the 2023 Bronze VSD Innovators Award
  • Nominated for the 2023 Inspect Award - Vote Now!

TECHSPEC® 120i Plan APO Infinity Corrected Objectives are machine vision infinite conjugate microscope objectives designed to reduce the overall weight and size of an imaging system while maintaining optical performance. These objectives allow for a reduction in overall system length, by eliminating the requirement for the objectives to be parfocal to each other. While a camera tube (#18-504) and tube lens (#18-505) are required for operation, these objectives feature optional accessories for easy system integration and design. A tube lens spacer (#18-506) can be used to simply connect the objective to the lens tube assembly. Alternatively, a filter cube (#18-508), that features a ¼” inline illumination port, and can be used to accommodate 25mm emission/excitation filters and a 25.2 x 35.6mm dichroic filter. The filter cube is designed to be used with our Fluorescence Filter Sets, which provide an emission filter, excitation filter, and a dichroic filter for compatible fluorophores. Alternatively, an M29 to Ø30mm Dovetail Adapter or a C-thread to Dovetail Adapter can be used to adapt to pre-existing systems and hardware. TECHSPEC® 120i Plan APO Infinity Corrected Objectives feature c-mount threading to provide easy integration into a wide range of machine vision systems. These objectives are ideal for biomedical and machine vision applications such as microscopy, flow cytometry, pharmaceutical inspection, and assembly line or fault inspection.

These objectives won the 2023 Bronze VSD Innovators Award.