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Patent JPS6017702A successfully refreshed from Google Patents.
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JPS6017702A Expired / Lapsed JP ⏱️ 0.0 years remaining

Composite filter

Assignee: Individual
•
Filing: 1983-07-12
•
Granted: —
•
Expires: 2003-07-12
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Abstract

Abstract PURPOSE:To shield light having an emission spectrum in the region of 600- 900nm by combining an org. resin filter contg. a dye with a colored glass filter. CONSTITUTION:When an org. film filter is combined with a glass filter to obtain a composite filter, the org. resin filter is formed by adding dibutyl phthalate as a plasticizer to cellulose acetate as a base and dissolving them in butyl acetate. The glass filter is formed by coloring phosphate glass as a base by making use of the configuration of cobalt ions. The two kinds of filters are stuck together with an epoxy resin adhesive in a bubble removing device to obtain the desired composite filter.

Inventors

  • 👤 Kiyoshi Nagai
  • 👤 清 永井

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-03 16:43
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/223; G02B5/208; G02B5/226

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

JPS4830131A Cited
JPS59189688A Cited

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