Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J61/00—Gas-discharge or vapour-discharge lamps
  • H01J61/02—Details
  • H01J61/025—Associated optical elements
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
  • G03B21/00—Projectors or projection-type viewers; Accessories therefor
  • G03B21/14—Details
  • G03B21/16—Cooling; Preventing overheating
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
  • H01J7/24—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)
• Discharge Lamps And Accessories Thereof (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19788755

Family Applications (1)

Country Status (3)

• 0
  • NL NL58984D patent/NL58984C/xx active
• 1944
  • 1944-03-02 FR FR902364D patent/FR902364A/fr not_active Expired
• 1946
  • 1946-08-22 GB GB25085/46A patent/GB631733A/en not_active Expired

Also Published As

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