Key Takeaways

• All-glass M12 lenses are engineered with high-temperature resistant optical glass materials, eliminating plastic components that deform or degrade under extreme heat.
• TOWIN’s all-glass M12 lenses comply with industrial-grade design standards (IP67/IP68) and maintain stable optical performance in high-temperature automotive, industrial, and outdoor surveillance scenarios.
• Core optimizations include low thermal expansion glass selection, precision optical structure design, and hermetic sealing, ensuring no focal shift or distortion in high-heat environments.
• TOWIN offers a full range of all-glass M12 lenses (wide-angle, fisheye) with focal lengths from 1.5mm to 3.7mm, supporting 1.3MP to 8MP resolution for diverse high-temperature applications.
• Compared with ordinary plastic-glass hybrid M12 lenses, all-glass versions have 3x longer service life and zero optical performance attenuation in high-temperature (-40°C to +85°C) working conditions.

Introduction

In automotive, industrial automation, and outdoor surveillance applications, camera lenses are often exposed to extreme high-temperature environments—engine bays, industrial equipment enclosures, and direct sunlight can push operating temperatures to over 80°C. Ordinary M12 lenses with plastic optical components face severe challenges: plastic deformation causes focal shift, material aging leads to reduced light transmittance, and structural loosening results in blurred imaging.

All-glass M12 lens solve these pain points by adopting a full optical glass structure and industrial-grade thermal stability design. As a professional optical lens manufacturer, TOWIN has developed a series of all-glass M12 lenses optimized for high-temperature stability, combining waterproof, dustproof, and wide-angle performance to meet the rigorous requirements of extreme environment applications.

Core Positioning of All-Glass M12 Lens

All-glass M12 lenses are the industrial-grade solution for M12 mount optical systems, positioned to replace plastic-glass hybrid lenses in high-temperature, high-reliability application scenarios. Their core value lies in:

• Uncompromised high-temperature performance: Maintaining precise imaging without deformation, aging, or focal shift in -40°C to +85°C operating range.
• Universal M12 compatibility: Standard M12x0.5 thread mount, direct replacement for ordinary M12 lenses without PCB or camera modification.
• Multi-scenario adaptability: Integrating waterproof, dustproof, and wide-angle/fisheye optical design, suitable for both automotive and industrial surveillance.
• Long-term reliability: All-glass structure eliminates plastic aging risks, reducing maintenance and replacement costs for equipment.

IP67 S-Mount lens

Industrial-Grade Design Standards for All-Glass M12 Lens

To ensure stable operation in high-temperature environments, TOWIN’s all-glass M12 lenses strictly follow industrial-grade design and manufacturing standards, with core compliance requirements including:

1. Material Standards

• 100% optical glass components (no plastic lenses/holders) with ultra-low thermal expansion coefficient (±2~8×10⁻⁸/°C) to resist thermal deformation.
• High-temperature resistant metal mount and structural parts, capable of withstanding +100°C short-term extreme heat.

2. Environmental Protection Standards

• IP67/IP68 waterproof and dustproof rating: Hermetic sealing design prevents water, dust, and moisture from entering the lens interior in high-temperature/humidity environments.
• Anti-condensation treatment: Internal optical coating reduces condensation caused by temperature changes, ensuring clear imaging.

3. Optical Manufacturing Standards

• Precision optical grinding and polishing, with surface accuracy within 0.001mm to avoid thermal expansion-induced optical path errors.
• Uniform multi-layer anti-reflection coating, maintaining >95% light transmittance in high-temperature environments without coating peeling.

4. Mechanical Standards

• Reinforced thread and structural connection, no loosening under thermal expansion and contraction cycles (tested for 10,000+ temperature cycles).
• Lightweight and compact design, T.T.L. (Total Track Length) controlled within 14mm~25mm for easy integration into small camera modules.

High-Temperature Optical Performance Optimization Technologies

TOWIN’s all-glass M12 lenses adopt targeted optimization technologies to solve the core optical problems of high-temperature environments, ensuring stable imaging performance:

1. Low Thermal Expansion Glass Selection

Adopt ultra-low expansion microcrystalline glass as the core optical material, whose thermal expansion coefficient is close to zero. This eliminates focal shift and image distortion caused by lens thermal expansion/contraction in high temperatures.

2. Integrated Optical Structure Design

Abandon the plastic lens holder, use a one-piece metal optical barrel to fix glass lenses. The metal barrel and glass have matching thermal expansion characteristics, avoiding structural gaps and optical path offset caused by inconsistent thermal expansion.

3. Hermetic Sealing Technology

Use high-temperature resistant fluororubber gaskets and laser welding sealing, achieving IP67/IP68 protection. Prevents high-temperature water vapor and dust from entering the lens, avoiding internal fogging and optical pollution.

4. Thermal Compensation Coating

Apply a special thermal compensation coating on the glass surface, which adjusts the refractive index with temperature changes to offset the slight optical path changes caused by extreme heat, maintaining consistent resolution and distortion performance.

5. Precision Focus Calibration

Calibrate the focal length at high temperatures (+85°C) during production, ensuring the lens remains in the best focus state in actual high-temperature working conditions without secondary focusing.

Key Parameter Analysis of TOWIN All-Glass M12 Lens

The performance of all-glass M12 lenses in high-temperature environments is directly reflected in core optical and mechanical parameters. Below is a detailed analysis of the key parameters of TOWIN’s mainstream all-glass M12 lens models:

Key Note: All parameters are tested and calibrated at +85°C high temperature, ensuring consistency with actual working conditions.

All-Glass M12 Lenses vs. Ordinary M12 Lenses

The core difference between all-glass and ordinary plastic-glass hybrid M12 lenses lies in high-temperature performance and long-term reliability. The following table is a detailed comparison:

TOWIN All-Glass M12 Lens – Full Range for High-Temperature Applications

TOWIN has launched a full series of all-glass M12 lenses optimized for high-temperature stability, covering wide-angle and fisheye types, with focal lengths from 1.5mm to 3.7mm, supporting 1.3MP to 8MP resolution. All models adopt 100% optical glass structure and IP67/IP68 protection, perfectly adapting to automotive and industrial high-temperature scenarios. Below is the detailed introduction of mainstream models:

1. S03412510232F – 3.4mm Wide-Angle High-Temperature All-Glass M12 Lens

• Core Specs: 1/2.5″ sensor, 5MP, HFOV 102°, F3.2, IP67, T.T.L. 18mm, 7G+IRCF structure
• High-Temperature Highlight: Optimized for automotive 1/2.5″ sensors (IMX317, MT9P031), stable imaging in engine bay and vehicle exterior high-temperature environments
• Application: Car front/rear view, automotive surround view systems

2. S03712310120 – 3.7mm Wide-Angle High-Temperature All-Glass M12 Lens

• Core Specs: 1/2.3″ sensor, 5MP, HFOV 101°/97°, F2.0, IP67, T.T.L. 15.91mm, 6G structure
• High-Temperature Highlight: Large aperture F2.0 for low-light high-temperature environments, dual FOV adaptation for 1/2.3″/1/2.7″ sensors
• Application: Industrial equipment surveillance, outdoor high-temperature area monitoring

3. CCL1256017MP – 1.7mm Fisheye High-Temperature All-Glass M12 Lens

• Core Specs: 1/2.56″/Φ5.56 sensor, 1.3MP, HFOV 200°, F2.0, IP68, T.T.L. 25mm,7G structure
• High-Temperature Highlight: IP68 ultra-high protection, 200° full fisheye FOV, suitable for high-temperature and high-humidity industrial environments
• Application: Car 360° panoramic view, industrial machine vision

4. CCLA13021MPF – 2.1mm Wide-Angle High-Temperature All-Glass M12 Lens

• Core Specs: 1/3″ sensor, MP resolution, HFOV 138°, F2.1, IP68, T.T.L.14.42±0.2mm,6G+IR cut structure
• High-Temperature Highlight: Ultra-compact T.T.L., IR cut for day/night high-temperature imaging, suitable for small high-temperature camera modules
• Application: Car side view, industrial robot vision

5. S01512323020 – 1.5mm Fisheye High-Temperature All-Glass M12 Lens

• Core Specs: 1/2.3″/Φ4.7 sensor, 8MP, HFOV 230°, F2.0, IP68, T.T.L.14.84mm,6G structure
• High-Temperature Highlight: 8MP ultra-high resolution, 230° super fisheye FOV, no resolution attenuation in high temperatures
• Application: High-definition outdoor extreme environment surveillance, automotive high-definition panoramic view

Application Scenarios of All-Glass M12 Lenses

Thanks to their excellent high-temperature stability and industrial-grade reliability, TOWIN’s all-glass M12 lenses are widely used in various high-temperature, high-reliability application scenarios:

Automotive Industry

• Car front/rear/side view cameras (engine bay, vehicle exterior high-temperature environments)
• 360° panoramic surround view systems (withstanding vehicle sun exposure and engine heat radiation)
• Commercial vehicle monitoring cameras (truck, engineering vehicle high-temperature working conditions)

Industrial Automation

• Industrial robot vision cameras (high-temperature workshop, equipment enclosure interior)
• CNC machine tool monitoring lenses (high-temperature metal processing environments)
• Industrial furnace and pipeline surveillance (short-term high-temperature extreme environments)

Outdoor Surveillance

• Outdoor high-temperature area monitoring (desert, tropical area direct sunlight)
• High-power equipment room surveillance (server room, power distribution room high temperature)
• Construction site and mining area monitoring (outdoor extreme heat and harsh environments)

Other High-Reliability Scenarios

• Aerospace ground equipment monitoring (high-temperature outdoor working conditions)
• Marine equipment surveillance (high-temperature and high-humidity marine environment)
• Medical equipment (high-temperature disinfection environment monitoring lenses)

ip68-M12-S-mount-Waterproof CCTV Lens

FAQs

Q1: Can TOWIN’s all-glass M12 lenses directly replace ordinary M12 lenses?

A: Yes. All TOWIN all-glass M12 lenses adopt the standard M12x0.5 thread mount, which is fully compatible with ordinary M12 lens camera modules. No PCB, camera housing, or software modification is required, and direct replacement can be achieved.

Q2: What is the maximum short-term high temperature that TOWIN’s all-glass M12 lenses can withstand?

A: TOWIN’s all-glass M12 lenses are designed for long-term operation at +85°C, and can withstand +100°C short-term extreme high temperature (within 2 hours) without optical performance degradation or structural damage.

Q3: Do all-glass M12 lenses have IR cut function for day/night imaging?

A: Yes. TOWIN offers all-glass M12 lens models with integrated IR cut (e.g., S03412510232F 7G+IRCF, CCLA13021MPF 6G+IR cut), which support day/night clear imaging and maintain stable IR cut performance in high-temperature environments without plastic component failure.

Q4: Can TOWIN customize all-glass M12 lenses for specific high-temperature scenarios?

A: Yes. As a professional optical lens manufacturer, TOWIN provides customized design and production of all-glass M12 lenses, including focal length, FOV, resolution, IP rating, and T.T.L. customization, to meet the unique high-temperature and optical requirements of different customers.

Q5: What is the delivery time of TOWIN’s all-glass M12 lenses and sample support?

A: TOWIN has a large stock of mainstream all-glass M12 lens models, with a delivery time of 3-5 working days for bulk orders. We provide free sample testing for customers, and the sample delivery time is 1-2 working days.

Conclusion

In high-temperature application scenarios where ordinary M12 lenses are unable to work stably, all-glass M12 lenses have become the core optical solution with their excellent thermal stability, industrial-grade reliability, and universal compatibility. TOWIN’s all-glass M12 lens series, with 100% ultra-low thermal expansion glass structure, IP67/IP68 protection, and targeted high-temperature optical optimization, perfectly solves the pain points of lens deformation, aging, and blurred imaging in extreme heat.

Covering wide-angle and fisheye types, with focal lengths from 1.5mm to 3.7mm and resolution from 1.3MP to 8MP, TOWIN’s all-glass M12 lenses can meet the diverse high-temperature optical requirements of automotive, industrial automation, and outdoor surveillance. With standard M12x0.5 mount, they realize direct replacement without modification, greatly reducing the integration and upgrade cost of customer equipment.

If you are looking for high-temperature stable M12 lenses for your automotive, industrial, or surveillance equipment, TOWIN’s all-glass M12 lens series is your best choice.

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Contact us: info@towin-elec.com

TOWIN – Professional Optical Lenses Supplier for Extreme Environments