Description

EEL M6.5 AD79040003 793nm 4mW Laser Diode Module

The EEL M6.5 AD79040003 is a compact 793 nm, 4 mW laser diode module engineered for OEMs and system integrators who require high stability, precise beam geometry, and long service life in a standard mechanical format. Built around a glass-lens collimation system and housed in an M6.5 industry-standard package, this module offers a reliable, ready-to-integrate light source for sensing, positioning, and navigation applications where consistent performance over time is critical.

Operating in the near‑infrared spectrum with a peak emission wavelength centered at 793 nm (775–800 nm range), the EEL M6.5 delivers stable continuous‑wave optical output of 4 mW. The device is designed for low power consumption, with a maximum operating current of 28 mA and operating voltage up to 2.3 V, making it easy to drive from compact, battery‑powered electronics. Thanks to its carefully controlled optical axis deviation and collimated beam, the module maintains a spot size of less than 15 mm at 6 m, which supports accurate distance measurement, object detection, and alignment tasks.

This laser module is engineered with high shock and vibration resistance, giving it a high seismic coefficient compared with many standard emitter‑lens assemblies used in mobile and industrial systems. The robust optomechanical design and high‑quality glass lens help preserve beam alignment and focus even under continuous motion, impacts, and mechanical stress. With a mean time to failure (MTTF) of more than 20,000 hours under specified operating conditions, the EEL M6.5 enables long maintenance intervals and reduces downtime in high‑duty‑cycle environments.

The operating temperature range of −10 °C to +60 °C and storage range of −40 °C to +85 °C provide ample headroom for integration in field‑deployed instruments and mobile platforms. Compared with many generic diode‑plus‑lens solutions, the EEL M6.5 module is pre‑aligned and thermally managed at the design level, helping minimize output drift and beam wander across the specified temperature range. This level of stability is particularly beneficial in applications such as SLAM (simultaneous localization and mapping), where sensor fusion algorithms depend on consistent optical references.

Mechanically, the M6.5 format is a common, standardized cylindrical size widely adopted across sensors, industrial equipment, and embedded robotics. Using this standard footprint allows design teams to shorten development cycles and reduce mechanical engineering overhead, since existing mounts, brackets, and housings can often be reused. The small size and low mass further simplify integration into compact sensor heads, gimbals, and mobile platforms where weight and space budgets are tight.

The EEL M6.5 AD79040003 is especially well suited for use in infrared sensors, sweeper and service robots, barcode scanning heads, and SLAM‑based navigation modules. In these use cases, its tightly controlled optical axis deviation improves measurement accuracy and repeatability, while the stable 4 mW output supports reliable detection on a wide range of surfaces and at varying working distances. Its glass lens delivers better long‑term optical stability and resistance to scratching and environmental effects than typical plastic optics, which helps maintain calibration over the life of the device.

The module is intended for integration by experienced OEMs who can implement appropriate drive electronics, surge protection, and electrostatic discharge (ESD) safeguards around the diode. To fully leverage its rated lifetime and stability, it should be driven within the specified current and voltage limits using a low‑noise, constant‑current driver that avoids current spikes during power‑up and power‑down. When basic handling precautions and recommended soldering profiles are followed, the EEL M6.5 AD79040003 provides a durable, accurate, and efficient near‑infrared laser source for a broad range of sensing and positioning applications.

793nm 4mW Diode Laser Module - AD79040003

Specifications

Center Wavelength: 0.793 um
Output Power: 4 mW
Wavelength At Peak Emission: 775 - 800 nm
Operating Voltage: 2.3 V
Operating Current: 28 mA
Operating Temp. Range: -10 to 60 °C
Storage Temp. Range: -40 to 85 °C

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Features

  • 793 nm, 4 mW Red-NIR Laser Output – Optimized wavelength range of 775–800 nm with 4 mW CW optical power for reliable performance in sensing, robotics and barcode applications.
  • High Stability, Low Drift Operation – Designed for stable optical output power over time and temperature, ensuring consistent measurement results and minimal recalibration.
  • Excellent Optical Quality & Small Spot Size – High-quality glass lens delivers a clean, well-defined beam with a spot size <15 mm at 6 m for precise detection and accurate scanning.
  • Compact M6.5 Standard Housing – Uses the widely adopted M6.5 cylindrical package, simplifying mechanical integration, enabling fast prototyping, and accelerating product development cycles.
  • Long Lifetime & High Reliability – MTTF > 20,000 hours supports long-term, maintenance‑reduced operation in industrial and commercial environments.
  • High Shock & Vibration Resistance – Robust mechanical design with a high seismic (shock) coefficient, suitable for mobile platforms, sweepers, and other vibration-prone systems.
  • Wide Operating Temperature Range – Stable operation from -10 °C to +60 °C and storage from -40 °C to +85 °C for dependable performance in harsh or fluctuating environments.
  • Low Power Consumption – Typical operating voltage up to 2.3 V and current up to 28 mA, enabling use in battery-powered and energy‑sensitive devices.
  • Common “Public” Design for Easy Adoption – Standardized structure and interface help reduce engineering effort, cut development costs, and simplify replacement or second‑source planning.
  • Glass Lens for Durability and Beam Quality – Glass optics provide better environmental resistance, thermal stability, and lower distortion compared to plastic lenses.
  • Optimized for Sensors and Distance Measurement – Small optical axis deviation enhances alignment accuracy, improving measurement precision in position, presence and proximity sensing.
  • Ideal for Robotics and SLAM – Stable, narrow‑band output at 793 nm supports LiDAR-like ranging, mapping, and localization algorithms in sweepers, AGVs, and service robots.
  • Barcode & Code Scanning Ready – Suitable optical power and beam characteristics for 1D/2D barcode readers and embedded scanning modules.
  • ESD and Surge Protection Guidelines – Designed for safe integration with clear recommendations on grounding, surge control and anti‑static handling to maximize device lifetime.
  • Soldering and Thermal Management Friendly – Compatible with standard soldering processes (≤180 °C, ≤3 s on leads) and supports simple heatsinking to maintain junction temperature and stability.

Applications

  • Optical sensing and detection
    • Position, displacement, and proximity sensors for industrial automation
    • Optical encoders and angle sensors for motors, robotics, and CNC machinery
    • Object presence and edge detection in production and packaging lines
    • Reflective sensors for smart home and IoT devices
  • Robotics and autonomous navigation
    • Sweeper and vacuum robots for room mapping and boundary detection
    • Service and delivery robots for indoor navigation and collision avoidance
    • SLAM (Simultaneous Localization and Mapping) modules requiring stable, narrow-beam sources
    • Low-power structured-light or triangulation systems for short‑range 3D perception
  • Barcode, code, and mark reading
    • 1D/2D barcode scanners in retail, logistics, and warehousing
    • High-speed industrial code readers for production line traceability
    • Portable and embedded OEM scan engines and data collectors
    • Machine-readable mark inspection in electronics and component manufacturing
  • Alignment, positioning, and pointing
    • Optical alignment tools for assembly, calibration, and jig setup
    • Reference beams for machine vision systems and inspection stations
    • Pointing and sighting modules in measurement instruments
    • Alignment aids in medical, dental, and cosmetic equipment (where 793 nm is preferred)
  • Machine vision and inspection
    • Illumination sources for near‑infrared vision cameras
    • Surface inspection and defect detection on semiconductors, glass, and metals
    • Dimensional measurement and profile scanning using NIR triangulation
    • Mark, label, and print contrast enhancement under 793 nm illumination
  • Time-of-flight and distance measurement
    • Short‑range TOF ranging modules and laser distance sensors
    • Obstacle detection for AGVs, AMRs, and compact robots
    • Height and level sensing in logistics, packaging, and material handling
    • Occupancy and people-counting sensors using modulated NIR beams
  • Scientific, laboratory, and metrology uses
    • Stable NIR light source for general optics experiments around 793 nm
    • Interferometry and precision alignment in R&D setups
    • Reference or pilot beam in spectroscopy systems using nearby wavelengths
    • Photodiode and detector characterization in the 775–800 nm band
  • Medical, biomedical, and life science equipment
    • Integration into diagnostic and monitoring devices requiring low‑power NIR
    • Optical alignment or aiming beams in 800 nm‑class medical systems
    • Blood and tissue interaction studies in the near‑infrared “therapeutic window”
    • Non-contact positioning aids in handheld and benchtop medical instruments
  • Security, surveillance, and access control
    • Invisible or low‑visibility illumination for NIR-capable cameras and sensors
    • Optical tripwires and intrusion detection using reflective detection setups
    • Gate, door, and turnstile safety sensors in access control systems
    • Short‑range IR beacons and identification markers
  • Consumer electronics and smart devices
    • Integrated NIR emitter for smart home sensors and hubs
    • Gesture recognition and presence detection modules
    • Optical feedback and positioning in AR/VR accessories (where 793 nm is suitable)
    • Laser-based targeting or pointing indicators in specialized handheld devices
  • OEM modules and product development
    • Prototype platforms where the M6.5 standard package accelerates design cycles
    • Replacement or alternative to common 780–808 nm diodes in existing layouts
    • Compact laser heads for custom industrial tools and instruments
    • Cost-optimized sensing and scanning modules leveraging the common public version design

Frequently Asked Questions

What makes the 793nm 4mW Diode Laser Module - AD79040003 stand out in terms of optical quality?
It offers exceptional optical performance, high stability, and stable optical output.
How long is the expected lifespan of this product?
The Mean Time To Failure (MTTF) is greater than 20,000 hours.
What are the primary applications for the EEL M6.5?
It is mainly used in sensors, sweeper robots, barcode scanning, and SLAM.
How does the standard size of M6.5 benefit developers?
M6.5 being a common standard size accelerates the product development and production process, reducing lead times.
Is there any specific safety gear recommended while working with this laser?
Yes, safety goggles are essential when observing or working directly with the laser to avoid potential eye damage.
What precautions should be observed during soldering?
The die-pad temperature should remain below 160°C. The iron temperature should be kept below 180°C and should only be applied for a maximum of 3 seconds.
Can the laser diode handle surges or static electricity?
The laser diode is sensitive to ESD and surges. It's imperative to ground the device, wear anti-static clothing, use recommended power supplies, and follow other precautions to ensure its safety.
What material is the lens made of?
The lens is crafted from plastic.

Got more questions? Use the inquiry form to ask the supplier directly.

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