Image clarity of endoscopes hinges on the coaxiality of objective lenses. Tiny offset or tilt introduced during lens gluing can trigger image distortion, dark shadows, chromatic aberration, blurriness and other visual defects. Standard general hand tools fail to deliver the ultra-precise positioning required for this process, hence specialized image alignment equipment is mandatory.
This image alignment fixture is dedicated precision machinery for fine positioning of objective lenses during endoscope optical assembly. Equipped with micrometer scales at its interface, it enables high-accuracy displacement measurement and actuation, locking the objective lens into the optimal optical position for superior imaging performance.
Its core functional capabilities during operation are outlined as follows:
- Precise control over objective mounting depth.
After objective installation, the lens surface must sit 0.1–0.2 mm below the distal tip of the inner tube. This recessed offset safeguards the lens against scratches when the endoscope navigates body cavities or contacts tissue, while maintaining unobstructed light transmission paths.
- Regulated vertical travel for uniform, calibrated lens-to-tube clearance
The integrated micrometer scale delivers real-time visual displacement readouts. Technicians can micro-adjust the forward/backward position of the objective lens per scale markings, guaranteeing consistent clearance between the lens surface and inner tube wall in full compliance with design specifications.
- Damage prevention during calibration procedures
Excessive force or poorly controlled travel during lens tuning may cause the lens assembly to jam inside the inner tube or create mechanical interferences that block adjustment to target positions. The fixture incorporates rigid guided motion structures and finely tunable vertical drive mechanisms to reliably eliminate such malfunctions.
