Infrared Image Test Charts

CaF₂ USAF1951 Mid-Infrared Resolution Target

CaF₂ USAF1951 Mid-Infrared Resolution Target

Brand：ColorSpace
Model：CS-TC-USAF-MWIR
Product description: CaF₂ USAF1951 resolution target designed for 5233nm (5.23μm) mid-infrared laser systems. Suitable for infrared imaging evaluation, optical calibration, FTIR spectroscopy, thermal cameras, and infrared
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USAF1951 Mid-Infrared Resolution Target

The CaF₂ USAF1951 Mid-Infrared Resolution Target is designed for 5233nm (5.23μm) laser systems and infrared optical applications. Manufactured on a high-purity calcium fluoride single-crystal substrate, it provides excellent transmission performance across the mid-infrared spectrum, making it suitable for infrared imaging systems, thermal cameras, FTIR spectrometers, infrared lenses, and optical research applications.

Based on the USAF1951 (MIL-STD-150A) resolution standard, the target includes complete Group -2 to Group +7 patterns for evaluating spatial resolution, image quality, and optical system performance. It can be used in optical development, production testing, laboratory calibration, and scientific research.

Key Features

High-Transmission CaF₂ Substrate：Manufactured from high-purity calcium fluoride single crystal, offering broad spectral transmission from 130nm to 9μm and strong performance in the mid-infrared region.
Optimized for 5233nm Laser Applications：Suitable for resolution evaluation, beam characterization, and optical performance verification in 5.23μm laser systems.
Standard USAF1951 Pattern Design：Fabricated according to the USAF1951 (MIL-STD-150A) standard, enabling consistent optical testing and comparative analysis across different imaging systems.
Custom Configuration Available：Available in positive or negative patterns, multiple coating options, custom dimensions, and substrate thicknesses to support diverse application requirements.

USAF1951 Mid-Infrared Resolution Target

Applications

Mid-Infrared Laser Systems：Resolution calibration and power stability testing for 5233nm (5.23μm) laser systems.
Infrared Imaging Devices：Image quality evaluation for infrared cameras, thermal imagers, and infrared microscopes.
Optical Instrument Testing：Calibration and performance verification of FTIR spectrometers, infrared lens modules, and semiconductor infrared inspection equipment.
Research and Industrial Applications：Infrared sensing for aerospace applications, medical infrared devices, and quality control in precision manufacturing.

Products Specifications

Parameter

USAF 1951 Mid-Infrared Resolution Target

Standard

USAF1951（MIL-STD-150A）

Substrate Material

High-Purity Calcium Fluoride (CaF₂) Single Crystal

Spectral Transmission Range

130nm – 9μm (High-Transmission Region: 3–8μm)

Transmission at Target Wavelength

Uncoated: >90% @ 5.23μm;
AR-Coated: >95% @ 5.23μm

Refractive Index