TOF Lens Solutions

TOF Lens for 3D Depth Sensing Cameras

High-precision TOF lenses optimized for 850nm and 940nm infrared illumination, enabling accurate depth sensing for robotics, automation, logistics, and smart devices.

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What Is a TOF Lens?

A TOF (Time-of-Flight) lens is an optical lens specifically designed for depth sensing cameras that measure the travel time of emitted infrared light.

The lens captures reflected infrared signals and projects them onto a TOF sensor, enabling precise 3D depth measurement in real time.

TOF lenses are widely used in robotics, autonomous systems, warehouse automation, facial recognition, and industrial inspection.

How TOF Imaging Works

Start

Step 1: Infrared Light Emission

Step 2: Reflection From Object

Step 3: Signal Capture

Step 4: Depth Calculation

End

The accuracy of TOF measurement depends heavily on lens distortion, infrared transmission efficiency, and optical consistency.

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Key Requirements for TOF Lenses

850nm vs 940nm TOF Lenses

Feature	850nm	940nm
IR Power	Higher	Medium
Ambient Light Resistance	Lower	Higher
Outdoor Performance	Moderate	Excellent
Eye Safety	Good	Better
Consumer Electronics	Common	Very Common
Robotics	Good	Excellent

940nm TOF lenses are increasingly preferred in robotics and consumer electronics because they offer stronger ambient light suppression and improved eye safety.

Recommended TOF Lens Models

S01714012013IRB9

Ultra-Wide TOF Lens

Parameter	Value
FOV	147°
Wavelength	940nm
Sensor	1/4"
Best For	Robot Navigation

Applications：

✓ 3D Scanning

✓ AMR / AGV

✓ Spatial Tracking

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S04112009316IR

Wide-Angle TOF Lens

Parameter	Value
FOV	120°
Design	6G+1ASPG
Sensor	1/2"
Best For	Industrial 3D Vision

Applications：

✓ Factory Automation

✓ Object Positioning

✓ Depth Measurement

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S08012004812IR

Low Distortion TOF Lens

Parameter	Value
FOV	60°
Distortion	<10%
Wavelength	940nm
Best For	Precision Measurement

Applications：

✓ Face Recognition

✓ Security Systems

✓ Measurement Equipment

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TOF Lens Applications Across Industries

TOF lenses enable accurate depth sensing and 3D perception across a wide range of industrial and commercial applications.

Robotics

Support obstacle detection, SLAM navigation, and autonomous robot operation in dynamic environments.

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AMR & AGV

Provide real-time depth information for warehouse automation, path planning, and collision avoidance.

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3D Machine Vision

Enable volume measurement, object positioning, and advanced 3D inspection systems.

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Facial Recognition

Deliver reliable depth mapping for secure biometric authentication and access control systems.

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Smart Home

Support gesture recognition, occupancy detection, and intelligent human-machine interaction.

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Industrial Inspection

Improve measurement accuracy and quality control through high-precision depth sensing.

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Why Choose Towin TOF Lenses

Specialized Infrared Lens Design

Optimized for 850nm and 940nm TOF systems.

Low Distortion Architecture

Supports accurate depth reconstruction.

Custom Mechanical Design

Available in M12 and customized mounts.

OEM & ODM Capability

Full customization support from concept to mass production.

Strict Quality Control

Every lens undergoes optical performance verification.

Fast Engineering Response

Rapid communication and prototype delivery.

Recommended TOF Lens Specifications

Parameter	Recommendation
Focal Length	2.1-8mm
Distortion	<2%
Wavelength	850nm / 940nm
Resolution	2MP-8MP
Mount	M12
Sensor Format	1/4" - 1/1.8"

Knowledge Center

Frequently Asked Questions

1What is a TOF lens?

A TOF lens is designed for depth sensing systems that calculate distance by measuring the travel time of infrared light.

2Why are 940nm TOF lenses popular?

940nm lenses provide better ambient light rejection and improved eye safety.

3Can TOF lenses be customized?

Yes. Focal length, distortion, IR coating, and mount type can all be customized.

4How Does a TOF Lens Work?

A TOF lens captures reflected infrared light emitted by a TOF camera system and focuses it onto the image sensor. The camera then calculates depth information based on the time required for the light to travel to the object and return.

5What Is the Difference Between 850nm and 940nm TOF Lenses?

850nm systems generally provide stronger infrared illumination and longer sensing distances, while 940nm systems offer better resistance to ambient light interference and greater eye safety. The choice depends on the application environment and performance requirements.

6Why Is Low Distortion Important for TOF Lenses?

Low distortion helps ensure accurate depth calculations across the entire image. Excessive distortion can introduce measurement errors and reduce the reliability of 3D reconstruction and object detection.

7What Is the Typical Sensing Range of a TOF Camera?

The sensing range depends on the TOF sensor, infrared power, environmental conditions, and lens design. Most industrial TOF systems operate effectively from a few centimeters up to several meters, while specialized systems may achieve longer distances.