JPS61146731A - Production of glass filter for descending color temperature having high conversion performance for color temperature - Google Patents

Production of glass filter for descending color temperature having high conversion performance for color temperature

Info

Publication number
JPS61146731A
JPS61146731A JP26541484A JP26541484A JPS61146731A JP S61146731 A JPS61146731 A JP S61146731A JP 26541484 A JP26541484 A JP 26541484A JP 26541484 A JP26541484 A JP 26541484A JP S61146731 A JPS61146731 A JP S61146731A
Authority
JP
Japan
Prior art keywords
color temperature
glass
production
glass filter
bao
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP26541484A
Other versions
JPH031248B2 (en
Inventor
Toshiharu Yamashita
Original Assignee
Hoya Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoya Corp filed Critical Hoya Corp
Priority to JP26541484A priority Critical patent/JPH031248B2/ja
Publication of JPS61146731A publication Critical patent/JPS61146731A/en
Publication of JPH031248B2 publication Critical patent/JPH031248B2/ja
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Abstract

PURPOSE: To obtain the titled glass filter suitable for a TV camera or the like by adding Se, C, SnO and an organic reducing agent or the like to an SiO2-Na2O-BaO-As2O3 series basic glass and heat-treating the mixture in the specified temp.
CONSTITUTION: The basic glass consisting of 57W70% (by wt%) SiO2, 12W24% Na2O and/or K2O, 5W18% BaO, 0W10% one or more kinds selected from among MgO, CaO, SrO and ZnO, 0W5% B2O3, 0W3% Al2O3, 0W4% TiO2 and 0.2W0.5% As2O3 is prepared. Then 0.08W0.5pts. SeO, 0W0.5pts. MnO2, 0.2W0.8pts. C, 0.05W0.4pts. SnO and 0W0.5pts. organic reducing agent selected from among potassium hydrogentartrate, saccharose and starch are added to 100pts. basic glass. Thereafter the titled filter is obtained by heat-treating the mixture at the temp. of the collapsing point and above, the softening point and below of glass.
COPYRIGHT: (C)1986,JPO&Japio
JP26541484A 1984-12-18 1984-12-18 Expired - Lifetime JPH031248B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26541484A JPH031248B2 (en) 1984-12-18 1984-12-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26541484A JPH031248B2 (en) 1984-12-18 1984-12-18

Publications (2)

Publication Number Publication Date
JPS61146731A true JPS61146731A (en) 1986-07-04
JPH031248B2 JPH031248B2 (en) 1991-01-10

Family

ID=17416827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26541484A Expired - Lifetime JPH031248B2 (en) 1984-12-18 1984-12-18

Country Status (1)

Country Link
JP (1) JPH031248B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10308541B2 (en) 2014-11-13 2019-06-04 Gerresheimer Glas Gmbh Glass forming machine particle filter, a plunger unit, a blow head, a blow head support and a glass forming machine adapted to or comprising said filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10308541B2 (en) 2014-11-13 2019-06-04 Gerresheimer Glas Gmbh Glass forming machine particle filter, a plunger unit, a blow head, a blow head support and a glass forming machine adapted to or comprising said filter

Also Published As

Publication number Publication date
JPH031248B2 (en) 1991-01-10

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term