FR2439356A1 - Appareil d'eclairage portatif comprenant une lentille diffusante - Google Patents

Appareil d'eclairage portatif comprenant une lentille diffusante

Info

Publication number
FR2439356A1
FR2439356A1 FR7829572A FR7829572A FR2439356A1 FR 2439356 A1 FR2439356 A1 FR 2439356A1 FR 7829572 A FR7829572 A FR 7829572A FR 7829572 A FR7829572 A FR 7829572A FR 2439356 A1 FR2439356 A1 FR 2439356A1
Authority
FR
France
Prior art keywords
stries
series
lens
radius
portable lighting
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.)
Granted
Application number
FR7829572A
Other languages
English (en)
Other versions
FR2439356B1 (fr
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.)
WONDER
Original Assignee
WONDER
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 WONDER filed Critical WONDER
Priority to FR7829572A priority Critical patent/FR2439356A1/fr
Priority to US06/072,651 priority patent/US4286312A/en
Publication of FR2439356A1 publication Critical patent/FR2439356A1/fr
Application granted granted Critical
Publication of FR2439356B1 publication Critical patent/FR2439356B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/005—Electric lighting devices with self-contained electric batteries or cells the device being a pocket lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F21V13/045—Combinations of only two kinds of elements the elements being reflectors and refractors for portable lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

CET APPAREIL D'ECLAIRAGE PORTATIF, QUI COMPREND UN BOITIER COMPORTANT UN REFLECTEUR PARABOLIQUE, UNE AMPOULE DONT LE FILAMENT EST SITUE SENSIBLEMENT AU FOYER DU REFLECTEUR PARABOLIQUE, ET UNE LENTILLE DIFFUSANTE DE FORME CARREE OU RECTANGULAIRE FIXEE A LA PERIPHERIE DU REFLECTEUR, PERPENDICULAIREMENT A L'AXE OPTIQUE DE CELUI-CI, SE CARACTERISE EN CE QUE LA LENTILLE PORTE UNE SERIE DE STRIES RECTILIGNES ET ADJACENTES SUR CHACUNE DE SES FACES INTERNE ET EXTERNE, EN CE QUE LES STRIES D'UNE MEME SERIE SONT FORMEES PAR DES SURFACES CYLINDRIQUES CONCAVES AYANT TRANSVERSALEMENT LE MEME RAYON ET SONT PERPENDICULAIRES A CELLES DE L'AUTRE SERIE, ET EN CE QUE LES RAYONS DES STRIES DE LA FACE INTERNE DE LA LENTILLE SONT LEGEREMENT PLUS PETITS QUE CEUX DES STRIES DE LA FACE EXTERNE DE LADITE LENTILLE, LA PROFONDEUR ET LES RAYONS DES DEUX SERIES DE STRIES ETANT CHOISIS POUR QUE LE FAISCEAU LUMINEUX PYRAMIDAL SORTANT DE CELLE-CI DONNE UN ECLAIREMENT CONSTANT DANS TOUT PLAN PERPENDICULAIRE A L'AXE OPTIQUE.
FR7829572A 1978-10-17 1978-10-17 Appareil d'eclairage portatif comprenant une lentille diffusante Granted FR2439356A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7829572A FR2439356A1 (fr) 1978-10-17 1978-10-17 Appareil d'eclairage portatif comprenant une lentille diffusante
US06/072,651 US4286312A (en) 1978-10-17 1979-09-05 Portable lighting apparatus comprising a diffusing lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7829572A FR2439356A1 (fr) 1978-10-17 1978-10-17 Appareil d'eclairage portatif comprenant une lentille diffusante

Publications (2)

Publication Number Publication Date
FR2439356A1 true FR2439356A1 (fr) 1980-05-16
FR2439356B1 FR2439356B1 (fr) 1982-04-30

Family

ID=9213841

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829572A Granted FR2439356A1 (fr) 1978-10-17 1978-10-17 Appareil d'eclairage portatif comprenant une lentille diffusante

Country Status (2)

Country Link
US (1) US4286312A (fr)
FR (1) FR2439356A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7178947B2 (en) * 2004-06-04 2007-02-20 Dale Marks Lighting device with elliptical fresnel mirror
JP2014093129A (ja) * 2012-10-31 2014-05-19 Toshiba Lighting & Technology Corp 発光ユニット及び照明器具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2308100A (en) * 1940-08-02 1943-01-12 Gen Motors Corp Signboard lamp
DE934992C (de) * 1954-07-16 1955-11-10 Westfaelische Metall Ind G M B Kraftfahrzeugscheinwerfer, insbesondere Nebelscheinwerfer
CH341746A (fr) * 1958-02-25 1959-10-15 Reuge Sa Lentille pour lampe de signalisation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1486720A (en) * 1924-03-11 Assig-nors to
US1489697A (en) * 1924-04-08 Clarence carson
US1745278A (en) * 1927-04-18 1930-01-28 Harry W Sisson Headlight lens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2308100A (en) * 1940-08-02 1943-01-12 Gen Motors Corp Signboard lamp
DE934992C (de) * 1954-07-16 1955-11-10 Westfaelische Metall Ind G M B Kraftfahrzeugscheinwerfer, insbesondere Nebelscheinwerfer
CH341746A (fr) * 1958-02-25 1959-10-15 Reuge Sa Lentille pour lampe de signalisation

Also Published As

Publication number Publication date
FR2439356B1 (fr) 1982-04-30
US4286312A (en) 1981-08-25

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Legal Events

Date Code Title Description
ST Notification of lapse