US1302148A - Headlight front or lens. - Google Patents

Headlight front or lens. Download PDF

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Publication number
US1302148A
US1302148A US21032918A US21032918A US1302148A US 1302148 A US1302148 A US 1302148A US 21032918 A US21032918 A US 21032918A US 21032918 A US21032918 A US 21032918A US 1302148 A US1302148 A US 1302148A
Authority
US
United States
Prior art keywords
lens
headlight front
headlight
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
US21032918A
Inventor
Frederick H Ford
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.)
TOTALUX Co
Original Assignee
TOTALUX Co
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 TOTALUX Co filed Critical TOTALUX Co
Priority to US21032918A priority Critical patent/US1302148A/en
Application granted granted Critical
Publication of US1302148A publication Critical patent/US1302148A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
US21032918A 1918-01-04 1918-01-04 Headlight front or lens. Expired - Lifetime US1302148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US21032918A US1302148A (en) 1918-01-04 1918-01-04 Headlight front or lens.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21032918A US1302148A (en) 1918-01-04 1918-01-04 Headlight front or lens.

Publications (1)

Publication Number Publication Date
US1302148A true US1302148A (en) 1919-04-29

Family

ID=3369685

Family Applications (1)

Application Number Title Priority Date Filing Date
US21032918A Expired - Lifetime US1302148A (en) 1918-01-04 1918-01-04 Headlight front or lens.

Country Status (1)

Country Link
US (1) US1302148A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065288A (en) * 1989-12-16 1991-11-12 Hella Kg Hueck & Co. Dimmable headlight

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065288A (en) * 1989-12-16 1991-11-12 Hella Kg Hueck & Co. Dimmable headlight

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