BE645310A - - Google Patents

Info

Publication number
BE645310A
BE645310A BE645310A BE645310A BE645310A BE 645310 A BE645310 A BE 645310A BE 645310 A BE645310 A BE 645310A BE 645310 A BE645310 A BE 645310A BE 645310 A BE645310 A BE 645310A
Authority
BE
Belgium
Prior art keywords
lenses
spherical
segments
signs
cylindrical lenses
Prior art date
Application number
BE645310A
Other languages
English (en)
French (fr)
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
Priority to BE645310A priority Critical patent/BE645310A/fr
Publication of BE645310A publication Critical patent/BE645310A/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Lenses (AREA)
BE645310A 1963-07-05 1964-03-17 BE645310A (cs)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE645310A BE645310A (cs) 1963-07-05 1964-03-17

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE634569 1963-07-05
BE645310A BE645310A (cs) 1963-07-05 1964-03-17

Publications (1)

Publication Number Publication Date
BE645310A true BE645310A (cs) 1964-07-16

Family

ID=25655566

Family Applications (1)

Application Number Title Priority Date Filing Date
BE645310A BE645310A (cs) 1963-07-05 1964-03-17

Country Status (1)

Country Link
BE (1) BE645310A (cs)

Similar Documents

Publication Publication Date Title
Oort Some phenomena connected with interstellar matter (George Darwin Lecture)
De Vaucouleurs Tilt Criteria and Direction of Rotation of Spiral Galaxies.
ES8103391A1 (es) Perfeccionamientos introducidos en un filtro de color di- fractivo
JP2000347293A5 (cs)
DE102019125264A1 (de) Optische Vorrichtung und Fahrzeug
GB429340A (en) Optical device suitable for selectively transmitting non-parallel light rays
BE645310A (cs)
KR870007440A (ko) 조명용의 광학계
JPS6175314A (ja) 長いバツクフオ−カス及び極めて大きな画角を有する広角レンズ
ATE422249T1 (de) Anordnung zur visualisierung von informationen in einem kraftfahrzeug
RU2153691C2 (ru) Светосильный объектив
WO2017110022A1 (ja) ビーム強度変換光学系およびビーム強度変換レンズ
JPS6046687B2 (ja) 投影・撮影用レンズ
RU2183341C1 (ru) Светосильный объектив
US2360768A (en) Gun sight
SU620926A1 (ru) Светосильный широкоугольный объектив
RU2181207C1 (ru) Светосильный объектив
ATE383591T1 (de) Mikroskop mit farblängsfehler verringernden kollimator
DE647511C (de) Episkopischer Bildwerfer
US1302351A (en) Single-tube and double-tube optical glass.
KR970066628A (ko) 비구면 렌즈를 사용한 광학계
RU2190245C1 (ru) Светосильный объектив
DE910597C (de) Trennbildentfernungsmesser
SU678447A1 (ru) Проекционный объектив
RU2105336C1 (ru) Однолинзовый окуляр