FJW Optical Systems 84499 Find-R-Scope Infrared Viewer

The FJW Optical Systems 84499 Find-R-Scope Infrared Viewer is a portable, handheld monocular device for observing near-infrared imagery beyond the visible light spectrum. The self-contained unit integrates a high-quality image converter tube, precision optics, and built-in high-voltage power supply to render clear, visible representations of objects imperceptible to the naked eye. Applications span laser alignment, surveillance, scientific research, and examination of artworks or documents.

## Technical Specifications

• **Spectral Sensitivity:** Standard models (84499B, 84499C): 350 nm to 1350 nm; Extended sensitivity models (84499B-5, 84499C-5): 350 nm to 1550 nm
• **Field of View:** 24° to 28°
• **Magnification:** Approximately 1×; optional lens kits provide approximately 2× magnification
• **Objective Lens:** Standard 25 mm, f/1.0 or f/1.6 Infragon lens; optional 50 mm f/1.8 C-mount lens for 2× magnification configurations
• **Resolution:** 38 lp/mm
• **Focal Range:** With 25 mm lens: 152.4 mm to infinity; with 50 mm lens: 1 m to infinity
• **Power Source:** One “C” cell battery; approximately 98 hours to over 250 hours continuous operation
• **Weight:** 590 g

## Key Features

• Rugged polycarbonate body with aluminum-housed precision ground optics
• C-mount adapter for optional lens compatibility
• Visible blocking filter (e.g., LP830) included to enhance signal-to-noise ratio
• Optional IR filters available to further improve signal-to-noise performance
• Optional close-up lenses for viewing distances as near as 50.8 mm
• Standard tripod mount for stability during observation
• Hard carrying case and battery included

## Typical Applications

• Laser alignment and beam characterization
• Surveillance and night observation
• Scientific research in infrared spectroscopy
• Art and document authentication

## Compatibility & Integration

The viewer accepts C-mount lenses via optional adapter. Close-up lens attachments enable macro-range observation. Visible blocking and optional infrared filters integrate directly into the optical path to optimize image contrast and signal clarity.