FR764922A - Lighthouse including a parabolic mirror - Google Patents

Lighthouse including a parabolic mirror

Info

Publication number
FR764922A
FR764922A FR764922DA FR764922A FR 764922 A FR764922 A FR 764922A FR 764922D A FR764922D A FR 764922DA FR 764922 A FR764922 A FR 764922A
Authority
FR
France
Prior art keywords
lighthouse
parabolic mirror
parabolic
mirror
lighthouse including
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
Friedrich Richard Dietrich
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 FR764922A publication Critical patent/FR764922A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
FR764922D 1932-11-23 1933-11-22 Lighthouse including a parabolic mirror Expired FR764922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE764922X 1932-11-23

Publications (1)

Publication Number Publication Date
FR764922A true FR764922A (en) 1934-05-30

Family

ID=6672966

Family Applications (1)

Application Number Title Priority Date Filing Date
FR764922D Expired FR764922A (en) 1932-11-23 1933-11-22 Lighthouse including a parabolic mirror

Country Status (1)

Country Link
FR (1) FR764922A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394745A1 (en) * 1977-06-17 1979-01-12 Lucas Industries Ltd MOTOR VEHICLE REFLECTOR
FR2495276A1 (en) * 1980-12-01 1982-06-04 Westfaelische Metall Industrie Headlamp for motor vehicle with hole in reflector forming paraboloid - has two section reflector with stepped transition forming hole for lamp
FR2525733A1 (en) * 1982-04-23 1983-10-28 Auteroche Sa Headlamp reflector with sub-reflector to aim beam downwards - uses main reflector with stepped parabolic segments moulded in to deflect down part of light beam
FR2769687A1 (en) * 1997-10-13 1999-04-16 Valeo Vision LEFT AND RIGHT MOTOR VEHICLE ASSEMBLY WITH IMPROVED PHOTOMETRIC PROPERTIES

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394745A1 (en) * 1977-06-17 1979-01-12 Lucas Industries Ltd MOTOR VEHICLE REFLECTOR
FR2495276A1 (en) * 1980-12-01 1982-06-04 Westfaelische Metall Industrie Headlamp for motor vehicle with hole in reflector forming paraboloid - has two section reflector with stepped transition forming hole for lamp
FR2525733A1 (en) * 1982-04-23 1983-10-28 Auteroche Sa Headlamp reflector with sub-reflector to aim beam downwards - uses main reflector with stepped parabolic segments moulded in to deflect down part of light beam
FR2769687A1 (en) * 1997-10-13 1999-04-16 Valeo Vision LEFT AND RIGHT MOTOR VEHICLE ASSEMBLY WITH IMPROVED PHOTOMETRIC PROPERTIES
US6210027B1 (en) 1997-10-13 2001-04-03 Valeo Vision Set of left and right motor vehicle headlamps with improved photometric properties
DE19844094B4 (en) * 1997-10-13 2012-08-02 Valeo Vision Set of left and right motor vehicle headlights with improved photometric properties

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