FR2330021A1 - Lentilles a echelons a deflecteurs - Google Patents

Lentilles a echelons a deflecteurs

Info

Publication number
FR2330021A1
FR2330021A1 FR7532855A FR7532855A FR2330021A1 FR 2330021 A1 FR2330021 A1 FR 2330021A1 FR 7532855 A FR7532855 A FR 7532855A FR 7532855 A FR7532855 A FR 7532855A FR 2330021 A1 FR2330021 A1 FR 2330021A1
Authority
FR
France
Prior art keywords
lens
layer
echelon
louvered
louvres
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
FR7532855A
Other languages
English (en)
French (fr)
Other versions
FR2330021B1 (enExample
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to FR7532855A priority Critical patent/FR2330021A1/fr
Publication of FR2330021A1 publication Critical patent/FR2330021A1/fr
Application granted granted Critical
Publication of FR2330021B1 publication Critical patent/FR2330021B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
FR7532855A 1975-10-28 1975-10-28 Lentilles a echelons a deflecteurs Granted FR2330021A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7532855A FR2330021A1 (fr) 1975-10-28 1975-10-28 Lentilles a echelons a deflecteurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7532855A FR2330021A1 (fr) 1975-10-28 1975-10-28 Lentilles a echelons a deflecteurs

Publications (2)

Publication Number Publication Date
FR2330021A1 true FR2330021A1 (fr) 1977-05-27
FR2330021B1 FR2330021B1 (enExample) 1979-05-04

Family

ID=9161713

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7532855A Granted FR2330021A1 (fr) 1975-10-28 1975-10-28 Lentilles a echelons a deflecteurs

Country Status (1)

Country Link
FR (1) FR2330021A1 (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530826A1 (fr) * 1982-05-26 1984-01-27 Guey Jeanine Lentille de fresnel et ses applications, notamment a un dispositif pour capter l'energie solaire
FR2595493A1 (fr) * 1986-03-07 1987-09-11 Thomson Csf Systeme de visualisation a ecran plat
WO1992019990A1 (fr) * 1991-05-07 1992-11-12 Belgian Electronic Research, B.E.R., S.A. Dispositif de detection autoreglable et autoadaptatif

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530826A1 (fr) * 1982-05-26 1984-01-27 Guey Jeanine Lentille de fresnel et ses applications, notamment a un dispositif pour capter l'energie solaire
EP0095414A3 (fr) * 1982-05-26 1985-05-08 Henri-Alexandre Giraud Lentille de Fresnel et ses applications, notamment à un dispositif pour capter l'énergie solaire
FR2595493A1 (fr) * 1986-03-07 1987-09-11 Thomson Csf Systeme de visualisation a ecran plat
WO1992019990A1 (fr) * 1991-05-07 1992-11-12 Belgian Electronic Research, B.E.R., S.A. Dispositif de detection autoreglable et autoadaptatif

Also Published As

Publication number Publication date
FR2330021B1 (enExample) 1979-05-04

Similar Documents

Publication Publication Date Title
GB1017060A (en) Reflex reflecting sheet material
GB1432243A (en) Rear projection screens and methods of making them
TW366431B (en) Black light sensitive resin constituent and the chromatic filter formed by the constituent and the manufacture method
FR2330021A1 (fr) Lentilles a echelons a deflecteurs
ES8205158A1 (es) Procedimiento para la fabricacion de un material laminar plastico reforzado con fibra de vidrio
GB1440885A (en) Auto trim
GB2014513A (en) Transparent thermoplastic laminate
EP0368681A3 (en) Contact type image sensor
ES455801A1 (es) Procedimiento para la proteccion de superficies de poli(clo-ruro de vinilo) contra los efectos de la luz solar.
AU525340B2 (en) Synthetic resin film with activated surface
GB1408088A (en) Method of controlling an environment for growing plants
JPS57128319A (en) Display panel
JPS56116010A (en) Photographic lens
EP0245853A3 (en) Light-transmitting material for illuminated indicator
JPS55140835A (en) Light shielding paper for roll photographic film
GB1343992A (en) Photographic supports
JPH11131945A (ja) 調光装置
ES443552A1 (es) Un procedimiento para la produccion de un guiador de un por-tador de informacion en forma de banda adecuado paa control fotoelectrico.
JP2825887B2 (ja) 透過形スクリーンとその製造方法
US3475762A (en) Translucent display elements
FR2276605A1 (fr) Dispositif optique double face
JPS5557802A (en) Light shield type sheet
JPS5538548A (en) Partial color filter including blank margin
JPH0235401A (ja) 遮光性フィルムの製造方法、遮光性フィルム積層体の製造方法及び遮光性ガラスの製造方法
US1214552A (en) Film for photographic projections in colors.