Transitions Optical, Inc. is the company that commercialized and manufactures plastic photochromic lenses, widely known as "transition lenses."
These innovative lenses automatically adjust their tint based on the amount of ultraviolet (UV) light present. They are clear indoors and darken outdoors, offering convenient vision correction that adapts to changing light conditions.
The Originator: Transitions Optical, Inc.
According to the reference provided, Transitions Optical, Inc. holds a significant place in the history of photochromic lenses.
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In 1991, Transitions Optical became the first company to commercialize and manufacture plastic photochromic lenses. This was a pivotal moment, bringing this adaptive lens technology to a broader market in a practical form.
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The company was established as a joint venture.
- PPG Industries holds a 51% stake.
- Essilor holds a 49% stake.
This joint ownership structure brings together the expertise and resources of two major players in the materials and optical industries.
What are Transition Lenses?
The term "transition lenses" is often used generically to refer to photochromic lenses, much like "Kleenex" is used for facial tissues. While other companies now also produce photochromic lenses, Transitions Optical, Inc. is the specific brand and company name associated with originating and manufacturing them on a large scale, particularly the plastic versions.
These lenses contain special molecules that react to UV light. When exposed to UV light, these molecules change shape and absorb visible light, causing the lens to darken. When the UV light source is removed (like going indoors), the molecules return to their original state, and the lens becomes clear again.
Key Details from the Reference
| Company Name | Role | Ownership Structure |
|---|---|---|
| Transitions Optical, Inc. | Commercialized & Manufactures Plastic Photochromic Lenses | Joint Venture (PPG 51%, Essilor 49%) |
| PPG Industries | Parent Company | 51% Stake in Transitions Optical |
| Essilor | Parent Company | 49% Stake in Transitions Optical |
By understanding the role of Transitions Optical, Inc. and its founding entities, PPG Industries and Essilor, one can appreciate the origins and development of this widely used lens technology.
