FR687759A - Lamp focus testing and adjustment device - Google Patents

Lamp focus testing and adjustment device

Info

Publication number
FR687759A
FR687759A FR687759DA FR687759A FR 687759 A FR687759 A FR 687759A FR 687759D A FR687759D A FR 687759DA FR 687759 A FR687759 A FR 687759A
Authority
FR
France
Prior art keywords
adjustment device
lamp focus
focus testing
testing
lamp
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
Application number
Other languages
French (fr)
Inventor
Albert R Squyer
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 filed Critical
Application granted granted Critical
Publication of FR687759A publication Critical patent/FR687759A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/06—Testing the alignment of vehicle headlight devices
    • G01M11/061—Details of the mechanical construction of the light measuring system

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Ladders (AREA)
FR687759D 1929-11-14 1930-01-06 Lamp focus testing and adjustment device Expired FR687759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3487129A GB343149A (en) 1929-11-14 1929-11-14 Means for testing and adjusting the focus of lamps

Publications (1)

Publication Number Publication Date
FR687759A true FR687759A (en) 1930-08-13

Family

ID=10370946

Family Applications (1)

Application Number Title Priority Date Filing Date
FR687759D Expired FR687759A (en) 1929-11-14 1930-01-06 Lamp focus testing and adjustment device

Country Status (3)

Country Link
DE (1) DE516663C (en)
FR (1) FR687759A (en)
GB (1) GB343149A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025392C1 (en) * 1990-08-10 1991-11-14 Hella Kg Hueck & Co, 4780 Lippstadt, De

Also Published As

Publication number Publication date
GB343149A (en) 1931-02-16
DE516663C (en) 1931-01-26

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