The Sofradir/Electrophysics MicronViewer 7290A is a near-infrared CCTV camera engineered for high-sensitivity imaging across the 400 nm to 1.9 µm spectral range. It delivers precise, real-time video output in both RS-170 (60 Hz) and CCIR (50 Hz) formats, making it adaptable to diverse imaging workflows.
The camera employs a high-performance lead-oxysulfide vidicon detector with a 9.5 × 12.7 mm scanned area. Horizontal resolution reaches 700 TV lines with a dynamic range of 100:1 and signal-to-noise ratio of 55 dB (p-p/rms) or better. Internal shading correction and selectable gain control (3-position manual or automatic) optimize image quality across varying light conditions. Decay lag after 50 ms is specified at 45–60%.
Optional extended spectral response to 2.2 µm enables measurement and inspection applications spanning the visible-to-shortwave infrared boundary. The integral optical filter slide accepts 25 mm filters—long-pass, short-pass, band-pass, or neutral density—to tailor spectral transmission without external adapters. C-mount lens compatibility provides flexibility in focal length and f-number selection.
Technical Specifications
• Imaging Detector: Lead-oxysulfide vidicon, 9.5 × 12.7 mm scanned area
• Spectral Response: 400 nm to 1.9 µm (standard); optional extended to 2.2 µm
• Horizontal Resolution: Up to 700 TV lines
• Dynamic Range: 100:1
• Signal-to-Noise Ratio: 55 dB (p-p/rms) or better
• Decay Lag (50 ms): 45–60%
• Damage Threshold: 1 mW/cm² (CW); 10 mJ (pulsed)
• Power Consumption: 6 W at 500 mA
• Supply Voltage: 12–15 VDC
• Operating Temperature: −20 °C to +50 °C
• Storage Temperature: −54 °C to +70 °C
– Key Features
• RS-170 and CCIR output modes with internal or composite gen-lock synchronization
• 2:1 interlaced scanning
• BNC connectors for video output and sync input; 4-pin power connector
• Compact form factor: 22 cm × 10 cm × 7 cm, 1.13 kg
• 1/4″–20 UNC-2B tripod mount on base
– Typical Applications
• Surveillance and low-light imaging
• Scientific research and spectral analysis
• Industrial inspection and quality assurance
• Laser beam profiling (including Nd:YAG systems)
• Optical telecom component development
– Compatibility & Integration
Video output conforms to RS-170 (60 Hz) and CCIR (50 Hz) standards. C-mount objective lenses integrate directly; external filter wheels are not required due to the integral 25 mm filter slide.
