Light assembly with flexed thermoplastic fresnel lens
AssigneeNissan Motor Co., Ltd.
InventorsMasaru Takasaki, Masutoshi Aoyama
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Abstract
Herein disclosed is an inexpensive light assembly which is easy to be produced and has aesthetic appearance. The assembly comprises a housing of thermoplastic resin having a convexly curved mouth, an electric bulb disposed in the housing, a lens of thermoplastic resin assuming a flat shape when no external stress is applied thereto, the lens being so constructed as to exhibit its desired optical performance when flexed by a given degree, and means for securing the lens to the mouth of the housing while flexing the same by the given degree.
Claims18
A light assembly comprising:
- a housing of thermoplastic resin having a convexly curved mouth;
- an electric bulb disposed in said housing;
- a fresnel lens of thermoplastic resin, wherein said fresnel lens comprises an originally flat lens which is flexed by a given degree to form said fresnel lens;
- and
- means for securing said lens to the mouth of said housing while flexing same by said given degree. PG,12
A method for producing a light assembly, comprising the steps of:
- preparing a housing of thermoplastic resin having a convexly curved mouth;
- flexing a flat lens of thermoplastic resin by a given degree to form a fresnel lens;
- and
- securing said lens to the mouth of said housing during said flexing step.
Dependencies are inferred from the claim text.