2.8mm Micro-Diameter Non-Articulating Borescope for Ultra-Confined Access

Product Overview

The Sugia OmniScope S1 addresses inspection scenarios where access ports are under 3.0 mm in diameter — fuel-nozzle spray orifices, hydraulic-valve pilot bores, additively manufactured lattice-structure internal passages, and precision-machined cross-drilled galleries in aerospace hydraulic manifolds. At 2.8 mm outer diameter, the S1 is the smallest probe in the OmniScope product line.

The probe is non-articulating by physical necessity: at 2.8 mm, the cross-sectional area is insufficient to accommodate tension-wire actuators alongside the image sensor and illumination fibers. Instead, the probe uses a semi-rigid construction with a memory-retaining Nitinol armature core that can be hand-shaped to a desired curve before insertion. Once shaped, the probe maintains its curvature during passage through straight access bores and returns to the pre-set curve upon exiting into the inspection cavity.

The 1/18-inch CMOS sensor at the probe tip delivers 768 × 576 pixel still images (0.44 megapixels) with a 100° wide-angle field of view. Illumination is provided by four 0.25 mm diameter polymer optical fibers that pipe white LED light from the handpiece to the probe tip, avoiding the thermal load of an integrated LED at the tip. The wide-angle optics provide a usable depth of field from 3 mm to 60 mm, enabling inspection of small internal features at very close working distances.

Key Engineering Features

• 2.8 mm Micro-Diameter Probe: Smallest probe in the OmniScope lineup; compatible with access ports as small as 3.0 mm diameter. Constructed with a 0.15 mm wall-thickness stainless-steel outer sheath and a Nitinol memory-retaining armature core.
• Nitinol Shape-Retaining Core: Superelastic Nitinol armature enables pre-shaping to user-defined curves; probe maintains curvature during insertion through straight bores and returns to pre-set shape upon exiting the access port into the inspection cavity.
• Fiber-Optic Illumination: Four 0.25 mm polymer optical fibers transmit illumination from an LED source in the handpiece to the probe tip; eliminates thermal load at the tip and enables the 2.8 mm diameter constraint.
• 100° Wide-Angle Optics: 1/18-inch CMOS with 100° diagonal field of view; depth of field from 3 mm to 60 mm optimizes near-field sharpness for close-working-distance inspection of small internal features.
• Portable Handpiece: Self-contained handpiece with 3.5-inch LCD monitor, image-capture trigger, and LED brightness thumbwheel; 0.42 kg total weight for single-handed operation in awkward access orientations.

Technical Specifications

Parameter	Value
Probe Outer Diameter	2.8 mm
Insertion Tube Length	1.0 m
Articulation	None (Nitinol shape-retaining semi-rigid core)
Image Sensor	1/18-inch Color CMOS
Effective Pixels	768 × 576 (0.44 Megapixel)
Frame Rate	30 fps
Field of View	100° diagonal
Depth of Field	3 mm – 60 mm
Illumination	4× polymer optical fiber, white LED source in handpiece
Monitor	3.5-inch TFT LCD, integrated in handpiece
Storage	microSD, up to 64 GB
Video Output	None (self-contained unit)
Battery	Built-in 3.7 V Li-polymer, 1800 mAh, ~2 h runtime
Charging	USB-C, 5 V / 1 A
Ingress Protection	Probe IP67, handpiece IP54
Operating Temperature	0 °C to +45 °C
Handpiece Dimensions	155 mm × 72 mm × 38 mm
System Weight	0.42 kg

Target Applications

• Fuel-System Component Inspection: Gas-turbine fuel-nozzle internal spray-orifice condition assessment, diesel injector nozzle sac-volume inspection, fuel-manifold internal gallery carbon-deposit documentation.
• Precision Hydraulics: Servo-valve pilot-stage spool-bore surface-condition inspection, aircraft hydraulic fuse internal seat and poppet inspection, ABS modulator-valve internal gallery verification.
• Additive Manufacturing QA: Internal lattice-structure passage continuity verification in DMLS/SLM-produced components, conformal-cooling channel inspection in injection-mold tooling inserts, internal support-structure residue detection in post-processed AM parts.
• Medical Device Manufacturing: Endoscopic instrument biopsy-channel internal surface finish verification, hypodermic-needle lumen inspection, micro-catheter internal-lumen continuity testing.