Junction lens device, zoom lens optical system employing...

Details Junction lens device, zoom lens optical system employing... Junction lens device, zoom lens optical system employing...

2006-10-03

2006-10-03

Ben, Loha (Department: 2873)

Optical: systems and elements

Light interference

Produced by coating or lamina

C359S586000, C427S162000

Reexamination Certificate

active

07116482

ABSTRACT:
A junction lens device is made by joining a high refractive lens and a low refractive lens using an adhesive. A coating layer for index matching is formed on a surface of at least one of the high refractive lens and the low refractive lens contacting the adhesive to reduce a reflection ratio on a junction surface. The coating layer is formed such that a reflection ratio on the junction surface with respect to a visible light ray is not more than about 0.2%.

REFERENCES:
patent: 4609267 (1986-09-01), Deguchi et al.

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