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Sonar Glasses Obstacle Detection Device for Blind and Visually Impaired

  • Published: 2016-07-13 (Rev. 2016-11-05) - Contact: Maggie McBride, Communications and Administrative Specialist G-Technology Group at
  • Synopsis: Sonar Glasses mobility tool designed to increase safety and independence of blind and visually impaired, and to complement the white cane and guide dogs.

Main Document

"The SONAR GLASSES can be fitted with prescription corrective lenses to provide a comprehensive mobility solution, supporting specific vision requirements."

The glasses have a sensor in the middle of the frame that uses sonar technology to inform the user if there are upcoming obstacles with a subtle vibration near the right temple. They also feature an adjustable range that can be customized to personal specifications.

Sonar Glasses allow the user to change the detection range between 3, 6, and 9 feet, hence providing the ability to use the glasses indoors and outdoors, as well as accommodating slow and fast walkers. This enhanced awareness facilitates the user’s movement and increases their autonomy in daily activities.

Lenses are available in clear, dark, photosensitive, and prescription.

All glasses come with two rechargeable batteries, a battery charger and ear locks.

There is also a one-year warranty for all glasses so they can be returned for a full refund if they do not deliver complete satisfaction.

Sonar Glasses Kit
Sonar Glasses Kit

Recommended Use:

  • The device is not intended to replace the white cane but to be used in combination with the cane or guide dog.
  • Intended for head and chest protection from overhanging obstacles such as tree branches and low ceilings by providing a subtle vibration near the right temple.

The Sonar Glasses Kit Includes:

  • 1 Battery Charger
  • 1 Pair of Ear Locks
  • 2 Lithium-ion Batteries
  • Clear or Dark Lenses with 100% UV Protection

Sonar Glasses Lenses
Sonar Glasses Lenses


  • The SONAR GLASSES can be fitted with prescription corrective lenses to provide a comprehensive mobility solution, supporting specific vision requirements.
  • Photosensitive lenses are clear indoors and become progressively darker when exposed to sunlight. This feature enables use during day and night without impeding visibility.

Diagram of Sonar Glasses Range
Diagram of Sonar Glasses Range


The glasses are made in the USA and have a 1 year warranty and satisfaction guarantee.

Video Clip: Demonstration Video of SONAR GLASSES by G-Technology Group

For further information and/or purchase please visit


  1. Sonar Technology Aids People with Vision Disabilities - Disabled World
  2. Alternative Vision for Blind Uses Sound Instead of Eyesight - The Hebrew University of Jerusalem
  3. Seeing Sound: Device Helps Blind to See Using Auditory Signals - California Institute of Technology


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