Fixed-focus projector objective UC

inspectionbiomedicalmachine vision

Overview
TECHSPEC® UC Series fixed focal length lenses are ultra-compact C‑Mount optics optimized for small-format machine vision sensors. Targeted for pixel sizes ≤2.2 µm and sensor formats up to 1/1.8" (many focal lengths optimized for 1/2.5"), the family delivers high resolution across the sensor and is suitable for short and long working distance applications in inspection, automation and biomedical imaging.

Key Features

• Focal length range: 4 mm to 35 mm
• Designed for pixels ≤2.2 µm; compatible with sensors up to 12 MP (varies by focal length)
• High resolution (select designs >200 lp/mm)
• C-Mount compatibility; many focal lengths optimized for 1/2.5" sensors and usable to 1/1.8"
• Focus and iris adjustments with recessed set screws; locking options on selected variants
• Waterproof UCw variants available (IPX7)

Sub-Families / Variants

• UC Series: Ultra-compact with locking cam focus and iris — most adjustable, general-purpose machine vision lenses.
• UCi Series: Simplified mechanics with fixed apertures for instrumentation-style applications.
• UCr Series: Optics glued with locking C-clamp focus ring for stabilized ruggedization and reduced pixel shift.
• UCw Series: Waterproof versions meeting IPX7 for temporary immersion resistance.

Applications
Machine vision inspection, factory automation, biomedical imaging, small-format sensor imaging, short and long working distance systems.

Dimensions (selected)
Focal Length (mm) | A (mm) | B (mm) | C (mm) | D (mm) | Filter Thread
4 | 40 | 40.6 | 30 | 2.8 | M62.0 x 0.75 (adapter #33-308 required)
6 | 36 | 40.9 | 30 | 3.2 | M34.0 x 0.5
8 | 30 | 40.61 | 30 | 5.15 | M34.0 x 0.5
12 | 30 | 35.2 | 30 | 2.7 | M25.5 x 0.5
16 | 30 | 29.13 | 30 | 3.38 | M25.5 x 0.5
25 | 30 | 31.28 | 30 | 4.0 | M25.5 x 0.5
35 | 30 | 52.76 | 30 | 4.58 | M25.5 x 0.5

Products (selected family entries)

• 4.00 mm — Max. Sensor Format: 1/2" — Aperture: f/1.8–f/11 — WD: 0–∞ — Mount: C‑Mount — Stock #: 33-300 — Price: $299.00
• 6.00 mm — Max. Sensor Format: 1/2" — Aperture: f/1.85–f/11 — WD: 50–∞ — Mount: C‑Mount — Stock #: 33-301 — Price: $299.00
• 8.00 mm — Max. Sensor Format: 1/2" — Aperture: f/1.8–f/11 — WD: 50–∞ — Mount: C‑Mount — Stock #: 33-307 — Price: $299.00
• 12.00 mm — Max. Sensor Format: 1/1.8" — Aperture: f/1.8–f/11 — WD: 100–∞ — Mount: C‑Mount — Stock #: 33-303 — Price: $299.00
• 16.00 mm — Max. Sensor Format: 1/1.8" — Aperture: f/1.8–f/11 — WD: 200–∞ — Mount: C‑Mount — Stock #: 33-304 — Price: $299.00
• 25.00 mm — Max. Sensor Format: 1/1.8" — Aperture: f/1.85–f/16 — WD: 200–∞ — Mount: C‑Mount — Stock #: 33-305 — Price: $299.00
• 35.00 mm — Max. Sensor Format: 1/1.8" — Aperture: f/1.85–f/16 — WD: 200–∞ — Mount: C‑Mount — Stock #: 33-306 — Price: $299.00

Technical Specifications

• Manufacturer / Brand: TECHSPEC® (Edmund Optics)
• Series: UC Series
• Focal length options: 4, 6, 8, 12, 16, 25, 35 mm
• Sensor compatibility: up to 1/1.8" (many focal lengths optimized for 1/2.5")
• Pixel size targeted: ≤2.2 µm; compatible with some 1.85 µm sensors and up to 12 MP
• Resolution: select designs >200 lp/mm
• Mount: C‑Mount
• Focus/Iris: adjustable on UC Series; fixed aperture on UCi variants; recessed set screws; locking options on some models
• Environmental options: UCr (stabilized ruggedization), UCw (waterproof IPX7)