PLASTIC COMBINED LENS AND MANUFACTURE THEREOF

PURPOSE:To join firmly two joining surfaces of different plastic molded parts, by pouring a prepolymer on a joining surface of a molded part of a plastic material followed by heating to polymerize the prepolymer thereby joining them. CONSTITUTION:The joining surface 2a of a molded lens 2 of a plasti...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOBAYASHI HIROSHI, TSUNODA CHIEKO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To join firmly two joining surfaces of different plastic molded parts, by pouring a prepolymer on a joining surface of a molded part of a plastic material followed by heating to polymerize the prepolymer thereby joining them. CONSTITUTION:The joining surface 2a of a molded lens 2 of a plastic mateiral is machined by grinding, polishing or the like operation, the lens 2 is placed in a cylinder 4, a prepolymer 8 is poured on the lens 2, and after deaeration is effected, they are sealed by glass plates 6, 10. Then they are heated to harden the prepolymer. The heating temperature should be lower than the softening temperature of the lens 2 so that the lens 2 and the lens 12 can be joined without deforming the joining surface 2a. The opposite surfaces 2b, 12b are machined to thereby obtain plastic joined lenses.