Fixed-focus camera objective Ci

inspectionmachine visionfor biomedical applications

Overview
TECHSPEC® Ci Series fixed focal length lenses are a compact, streamlined version of the C Series designed for volume instrumentation integration. They deliver low lens‑to‑lens variation, broadband anti‑reflection (BBAR) coatings for high transmission, and an adjustable, lockable focus for secure installation in equipment.

Key Features

• C‑Mount form factor, supports up to 2/3" sensors
• Compatible with sensors up to ~7.5 MP with 2.8 µm pixel size
• Broadband anti‑reflection (BBAR) coatings for maximum transmission
• Adjustable, lockable focus for set‑and‑lock integration
• Fixed aperture options to balance resolution, throughput and depth of field
• Focal length coverage across family: 3.5 mm to 50 mm

Product Family Variants

• C Series: Locking cam focus and iris adjustment; most adjustable for machine vision applications.
• Ci Series: Simplified mechanics with fixed apertures, compact housings and locked focus for instrumentation integration.
• Cr Series: Ruggedized designs with glued optics and locking C‑clamp focus ring for enhanced stability.
• Cx Series: Modular mechanics allowing disassembly for accessory integration (e.g., liquid lenses, apertures).
• Liquid Lens Cx Series: Integrated liquid lens for fast electronic autofocus.
• Cw Series: Waterproof designs meeting ingress protection ratings (e.g., IPX7 / IPX9K) for harsh environments.

Dimensions
Focal Length | A | B | C | D
6 mm | M34.0 x 0.5 | 47.8 mm | 34 mm | 1.17 mm
12 mm | M22.0 x 0.75 | 29.0 mm | 22 mm | 0.96 mm
16 mm | M22.0 x 0.75 | 40.8 mm | 22 mm | 1.09 mm
25 mm | M22.0 x 0.75 | 29.9 mm | 22 mm | 1.33 mm
35 mm | M25.5 x 0.5 | 41 mm | 22.5 mm | 3.82 mm
50 mm | M30.5 x 0.5 | 49.5 mm | 30.5 mm | 2.06 mm

Applications

• Factory inspection and automation
• Machine vision and instrumentation integration
• Benchtop biomedical devices and OEM instrument integration

Technical specifications

• Designation: Ci Series (TECHSPEC® family)
• Focal length range: 3.5 mm to 50 mm (family coverage; specific SKUs as listed)
• Mount / format: C‑Mount; supports up to 2/3" sensors (varies by focal length)
• Sensor support: Up to ~7.5 MP with 2.8 µm pixel size (family guidance)
• Coating: Broadband Anti‑Reflection (BBAR)
• Focus mechanism: Adjustable, lockable focus (set‑and‑lock)
• Aperture: Fixed aperture options in Ci family (varies by SKU)
• Mechanical design: Streamlined, reduced weight/size for volume integration
• Ruggedization: Related sub‑families offer ruggedized, waterproof or stabilized variants