The Hamblin Glasses, introduced in 1936, were a pioneering attempt to address vision and health issues related to prolonged exposure to artificial light, such as from electric lamps or screens. Designed by British inventor Percy Hamblin, these glasses were marketed as a solution to prevent eye strain and fatigue, which were becoming more common as people spent increasing time in indoor environments, particularly under electric lighting.
Design Features:
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Amber-Tinted Lenses:
The Hamblin Glasses featured amber or yellow-tinted lenses, which were believed to filter out harsh blue light and reduce glare from artificial lighting. The idea was to create a more soothing visual experience for the wearer. -
Curved Frames:
The frames were often designed to wrap around the face slightly, providing a better fit and reducing the amount of ambient light entering from the sides. This design aimed to create a more immersive and comfortable visual environment. -
Ergonomic Fit:
The glasses were designed to be lightweight and comfortable, allowing for long periods of use without causing discomfort.
Purpose and Benefits:
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Reducing Eye Strain:
The primary goal of the glasses was to alleviate eye strain caused by prolonged exposure to artificial light or reading, particularly at night or in low-light environments. -
Improving Visual Comfort:
The amber tint was believed to provide a more restful and soothing visual experience, particularly under the dim, flickering lights of the time. -
Promoting Better Sleep:
By filtering out certain wavelengths of light, the glasses were also thought to reduce disruptions to circadian rhythms, potentially improving sleep quality for those who used them before bedtime.
Cultural and Historical Context:
The 1930s were a time of rapid technological and industrial growth, and with the widespread adoption of electric lighting, many people began to experience new forms of visual discomfort. The Hamblin Glasses reflected an early awareness of the effects of artificial light on human health, prefiguring modern concerns about screen time and blue light exposure.
Legacy:
While the Hamblin Glasses were not widely adopted, they laid the groundwork for later innovations in eyewear aimed at improving visual comfort and health. Today, the principles behind the glasses live on in modern blue light-blocking eyewear, which is designed to reduce the strain caused by digital screens. The Hamblin Glasses serve as an early example of how technology can be used to address emerging health issues related to modern living.