Fixed focus lenses are the unsung heroes of optical engineering, offering simplicity, reliability, and cost-effectiveness for applications where adjustable focus isn’t critical. Whether you’re designing industrial machine vision systems, enhancing surveillance networks, or developing automotive imaging solutions, understanding how to deploy fixed focus lens effectively can elevate your project’s performance.

Understanding Fixed Focus Lenses: Key Parameters

Fixed focus lens, also known as prime lenses, are designed with a single, unchanging focal length. Unlike zoom lenses, they lack movable elements, ensuring consistent image quality across their field of view. Here are the critical parameters to consider:

1. Focal Length: Determines the lens’s angle of view. Shorter focal lengths (e.g., 2.8mm) provide wide-angle views, while longer ones (e.g., 12mm) offer narrow, magnified perspectives.
2. Aperture (f-number): Controls light intake. A lower f-number (e.g., f/1.4) allows more light, ideal for low-light conditions.
3. Resolution: Measured in megapixels (MP), higher resolution lenses capture finer details, crucial for machine vision.
4. Distortion: Minimal distortion ensures geometric accuracy, essential for measurement systems.
5. Mount Type: Compatibility with camera interfaces (e.g., M12/S-Mount, C-Mount, CS-Mount) dictates integration ease.

IR Corrected S-Mount Lenses

TOWIN’s Fixed Focus Lens: Precision-Engineered for Excellence

TOWIN, a leading optical lenses supplier based in China, specializes in fixed focus lens tailored for diverse applications. Their product lineup includes:

1. M12/S-Mount Fixed Focus Lenses

Applications: PCB cameras, embedded vision, and compact devices.

Features:

• Ultra-compact size (M12X0.5 thread) for space-constrained setups.
• Low distortion (<1%) for accurate imaging.
• Variants: Fisheye, wide-angle, and low-light sensitive options.

Advantage: Seamless integration with PCB cameras, reducing assembly complexity.

2. C-Mount Fixed Focus Lenses

Applications: Industrial machine vision, 3D cameras, and traffic monitoring.

Features:

• Flange focal distance of 17.526mm for precise alignment.
• High resolution (up to 12MP) for detailed inspections.
• Robust build for harsh environments.

Advantage: Superior image clarity in factory automation and ITS (Intelligent Traffic Systems).

3. CS-Mount Fixed Focus Lenses

Applications: CCTV, network cameras, and day/night surveillance.

Features:

• Flange focal distance of 12.526mm for CS-mount cameras.
• IR-corrected multi-coating for 24/7 operation.
• Vari-focal and manual iris options.

Advantage: Cost-effective security solutions with minimal maintenance.

CCTV lens,CS-Mount Fixed Focus Lenses

Why Choose TOWIN’s Fixed Focus Lens?

1. All-in-One Solutions: TOWIN offers lenses for nearly every application, from automotive to presentation systems.
2. Fast Delivery: Streamlined manufacturing ensures quick order fulfillment.
3. Customization: Design lenses to meet specific focal lengths, apertures, or mounting requirements.
4. Quality Assurance: Rigorous testing guarantees compliance with international standards.

How to Use Fixed Focus Lens Effectively

Step 1: Define Your Application

• Surveillance: Opt for CS-mount lenses with IR correction for nighttime clarity.
• Machine Vision: Choose C-mount lenses with high resolution and low distortion.
• Embedded Systems: Use M12 lenses for compact, low-power designs.

Step 2: Match Lens Parameters to Camera Specs

• Ensure compatibility between the lens’s mount type, focal length, and sensor size. For example, a 1/2.5” sensor pairs well with a 4mm M12 lens for wide-angle coverage.

Step 3: Optimize Lighting Conditions

• Fixed focus lens thrive in controlled lighting. For low-light environments, select lenses with wider apertures (e.g., f/2.0) to maximize light intake.

CS-mount lens-Fixed Focus

Conclusion

Fixed focus lenses are a game-changer for applications demanding reliability and precision. TOWIN’s extensive portfolio, coupled with their commitment to quality and speed, makes them the go-to supplier for optical solutions.