Basler C23-2518-5M-P 5MP C-Mount Fixed Focal Lens

Technical Overview

Premium 5MP C-mount lens with 25mm fixed focal length, F1.8-F16 aperture, and locking screws for industrial vision.

Key Features

Compatible with Basler cameras featuring up to 2/3" sensor size.
Constructed with a durable metal housing.
Standard C-mount interface for broad compatibility.
Equipped with locking screws for secure iris and focus settings.
Features aperture indicators on the iris ring and lens barrel.
Delivers high contrast for clear image capture.
Designed for 147 LP/mm resolution for fine detail capture.
Offers manual focus and iris operation.
Optimized for a 0.5 m working distance.

Technical Specification Matrix

Parameter	Value
Focal Length	24.9 mm ± 5 %
Aperture Range	F1.8–F16
Aperture with Highest Resolution	F2.4
Image Circle	11 mm (2/3" format)
Focus Range	0.2 m to infinity
Optimum Working Distance	0.5 m
Relative Illumination at Full Aperture	63 %
Resolution	5 MP, Designed for 147 LP/mm (3.40 µm pixel size)
Optical Distortion	Typical 0.92 %
Wavelength Range	Visible (400–700 nm)
Flange Back	17.526 mm
Mount	C-mount
Operating Temperature	-10–50 °C (14–122 °F)
Operating Humidity	10 to 90% relative humidity, non-condensing
Storage Temperature	-20 to 60°C (-4 to 140 °F)
Physical Weight (kg)	0.06
Dimensions L x W x H (cm)	3.71 x 3.21 x 3.21

Industrial Applications

1. High-Precision Quality Control in Manufacturing

This lens is ideal for inspecting small components or detecting minute defects on production lines where high image fidelity is critical. The 5MP resolution and 147 LP/mm design resolution, combined with low optical distortion (0.92%), enable detailed examination of tiny features. The C-mount ensures broad compatibility with industrial cameras, and locking screws maintain focus and iris settings, crucial for stability in vibration-prone environments.

Problem Solved

Ensures consistent and highly accurate detection of manufacturing defects, preventing faulty products from progressing further in the production process.

Machine VisionQuality ControlDefect DetectionHigh Resolution ImagingC-mountLow Distortion

2. Automated Assembly Verification

For robotic assembly systems, this lens can be used to verify the correct placement and orientation of components. Its fixed 25mm focal length and optimum working distance of 0.5m provide a stable and consistent field of view, which is crucial for repetitive tasks. The F1.8 aperture allows for good low-light performance, advantageous in varying industrial lighting conditions.

Problem Solved

Guarantees accurate component assembly and reduces human error in repetitive manufacturing processes, improving efficiency and reliability.

Robotic VisionAssembly AutomationComponent VerificationFixed Focal LengthIndustrial CamerasLow-Light Performance

3. Medical Device Micro-inspection

Given its high resolution and ability to capture fine details, this lens is well-suited for automated inspection of small medical device components, such as catheters or surgical instruments, for flaws or inconsistencies. The visible wavelength range (400-700 nm) is standard for visual inspection, and the robust metal housing provides durability suitable for cleanroom environments.

Problem Solved

Automates the rigorous quality inspection of critical medical components, ensuring patient safety and regulatory compliance by detecting minute flaws.

Medical ImagingMicro-inspectionQuality AssuranceVisible SpectrumIndustrial OpticsCleanroom Compatibility