Synthetic resin layered lens for a vehicle lighting device, meth

Details Synthetic resin layered lens for a vehicle lighting device, meth Synthetic resin layered lens for a vehicle lighting device, meth

1994-05-18

1998-02-24

Loney, Donald

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428187, 428192, 359642, B32B 300, G02B 300

Patent

active

057210390

ABSTRACT:
A synthetic resin layered lens for a vehicle lighting device in which an upper lens layer is disposed on a lower lens layer thereby forming a layered lens of integral construction. The lower lens layer is molded in a state that the surface of the lower lens layer where it contacts the upper lens layer, faces the injection gate. The gate scar of the lower layer is thus hidden by the upper layer.

REFERENCES:
patent: 4714535 (1987-12-01), Coombes et al.
patent: 4885121 (1989-12-01), Patel
patent: 5275764 (1994-01-01), Hettinga
patent: 5413743 (1995-05-01), Prophet
Zweifarben-Spritzgieben, Facherfahrener Konner erlautert, wie man's macht, Arburg Maschinenfabrik Hehl & Sohne, pp. 1-6.

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