GB2206992B - High intensity discharge lamp of the one side sealed type capable of compensating for the change of luminous efficiency caused by its different lighting angl - Google Patents

High intensity discharge lamp of the one side sealed type capable of compensating for the change of luminous efficiency caused by its different lighting angl

Info

Publication number
GB2206992B
GB2206992B GB8813736A GB8813736A GB2206992B GB 2206992 B GB2206992 B GB 2206992B GB 8813736 A GB8813736 A GB 8813736A GB 8813736 A GB8813736 A GB 8813736A GB 2206992 B GB2206992 B GB 2206992B
Authority
GB
United Kingdom
Prior art keywords
angl
compensating
change
discharge lamp
high intensity
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.)
Expired - Lifetime
Application number
GB8813736A
Other versions
GB8813736D0 (en
GB2206992A (en
Inventor
Kazuo Honda
Atsushi Matsuura
Shinji Inukai
Yasuhiro Iwafuji
Hisanori Sano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba 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
Priority claimed from JP62144053A external-priority patent/JP2526065B2/en
Priority claimed from JP62243956A external-priority patent/JPH0787092B2/en
Priority claimed from JP63042253A external-priority patent/JPH01220361A/en
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of GB8813736D0 publication Critical patent/GB8813736D0/en
Publication of GB2206992A publication Critical patent/GB2206992A/en
Application granted granted Critical
Publication of GB2206992B publication Critical patent/GB2206992B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827—Metal halide arc lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
GB8813736A 1987-06-11 1988-06-10 High intensity discharge lamp of the one side sealed type capable of compensating for the change of luminous efficiency caused by its different lighting angl Expired - Lifetime GB2206992B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62144053A JP2526065B2 (en) 1987-06-11 1987-06-11 Discharge lamp
JP62243956A JPH0787092B2 (en) 1987-09-30 1987-09-30 Metal halide lamp
JP63042253A JPH01220361A (en) 1988-02-26 1988-02-26 Metal vapor discharge lamp

Publications (3)

Publication Number Publication Date
GB8813736D0 GB8813736D0 (en) 1988-07-13
GB2206992A GB2206992A (en) 1989-01-18
GB2206992B true GB2206992B (en) 1992-01-08

Family

ID=27291137

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8813736A Expired - Lifetime GB2206992B (en) 1987-06-11 1988-06-10 High intensity discharge lamp of the one side sealed type capable of compensating for the change of luminous efficiency caused by its different lighting angl

Country Status (4)

Country Link
AU (1) AU604126B2 (en)
CA (1) CA1305996C (en)
FR (1) FR2616588A1 (en)
GB (1) GB2206992B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0762993B2 (en) * 1987-09-21 1995-07-05 東芝ライテック株式会社 Metal halide lamp
US4998036A (en) * 1987-12-17 1991-03-05 Kabushiki Kaisha Toshiba Metal vapor discharge lamp containing an arc tube with particular bulb structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB506824A (en) * 1900-01-01
GB639536A (en) * 1946-04-17 1950-06-28 Gen Electric Co Ltd Improvements in and relating to mercury vapour lamps
GB1240778A (en) * 1968-09-12 1971-07-28 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh High pressure compact arc lamp
GB2072412A (en) * 1980-03-24 1981-09-30 Gte Prod Corp Electrode geometry to improve arc stability
GB2103872A (en) * 1981-07-22 1983-02-23 Gen Electric Co Plc Electric discharge lamp seals
GB2126415A (en) * 1982-08-30 1984-03-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Discharge lamp
GB2140197A (en) * 1980-03-24 1984-11-21 Gte Prod Corp Low wattage metal halide arc discharge lamp

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB383165A (en) * 1931-05-07 1932-11-10 Gen Electric Co Ltd Improvements in electric lamps
NL178107C (en) * 1977-12-23 1986-01-16 Philips Nv HIGH PRESSURE DISCHARGE LAMP.
JPS563962A (en) * 1979-06-22 1981-01-16 Mitsubishi Electric Corp High-pressure metal vapor discharge lamp
US4342937A (en) * 1980-02-12 1982-08-03 Egyesult Izzolampa Es Villamossagi Rt. Metal halogen vapor lamp provided with a heat reflecting layer
US4557700A (en) * 1983-06-09 1985-12-10 Gte Products Corporation Metal halide discharge lamp gas fill process to provide minimal color separation
DE3537872A1 (en) * 1985-10-24 1987-04-30 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP
DE8623905U1 (en) * 1986-09-05 1988-02-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München High pressure discharge lamp
JPH0762993B2 (en) * 1987-09-21 1995-07-05 東芝ライテック株式会社 Metal halide lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB506824A (en) * 1900-01-01
GB639536A (en) * 1946-04-17 1950-06-28 Gen Electric Co Ltd Improvements in and relating to mercury vapour lamps
GB1240778A (en) * 1968-09-12 1971-07-28 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh High pressure compact arc lamp
GB2072412A (en) * 1980-03-24 1981-09-30 Gte Prod Corp Electrode geometry to improve arc stability
GB2140197A (en) * 1980-03-24 1984-11-21 Gte Prod Corp Low wattage metal halide arc discharge lamp
GB2103872A (en) * 1981-07-22 1983-02-23 Gen Electric Co Plc Electric discharge lamp seals
GB2126415A (en) * 1982-08-30 1984-03-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Discharge lamp

Also Published As

Publication number Publication date
FR2616588A1 (en) 1988-12-16
AU604126B2 (en) 1990-12-06
AU1752488A (en) 1989-01-19
CA1305996C (en) 1992-08-04
GB8813736D0 (en) 1988-07-13
GB2206992A (en) 1989-01-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940610