CH612312GA3 - Method of manufacturing a dial provided, among other things, with luminescent indices which are visible only at night, and dial obtained by this method - Google Patents

Method of manufacturing a dial provided, among other things, with luminescent indices which are visible only at night, and dial obtained by this method Download PDF

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Publication number
CH612312GA3
CH612312GA3 CH1244077A CH1244077A CH612312GA3 CH 612312G A3 CH612312G A3 CH 612312GA3 CH 1244077 A CH1244077 A CH 1244077A CH 1244077 A CH1244077 A CH 1244077A CH 612312G A3 CH612312G A3 CH 612312GA3
Authority
CH
Switzerland
Prior art keywords
dial
indices
luminescent
visible
night
Prior art date
Application number
CH1244077A
Other versions
CH612312B (en
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
Publication of CH612312B publication Critical patent/CH612312B/en
Application filed filed Critical
Priority to CH1244077A priority Critical patent/CH612312GA3/en
Priority to JP12471178A priority patent/JPS5491272A/en
Publication of CH612312GA3 publication Critical patent/CH612312GA3/en

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/30—Illumination of dials or hands
    • G04B19/32—Illumination of dials or hands by luminescent substances
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
    • G04D3/0048—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for dials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Luminescent Compositions (AREA)
  • Electric Clocks (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Adornments (AREA)

Abstract

The dial plate (1) has housings in each of which is placed a luminescent index (2). This index is formed from a mixture of luminescent material and plastic. Under the index, a layer (3) reflects the light emitted by the luminescent material. The dial plate and the indices are covered with a non-transparent protective layer (4) and with a metallised film (5). Thus, the indices are visible in darkness, but invisible in the light. <IMAGE>
CH1244077A 1977-10-12 1977-10-12 Method of manufacturing a dial provided, among other things, with luminescent indices which are visible only at night, and dial obtained by this method CH612312GA3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH1244077A CH612312GA3 (en) 1977-10-12 1977-10-12 Method of manufacturing a dial provided, among other things, with luminescent indices which are visible only at night, and dial obtained by this method
JP12471178A JPS5491272A (en) 1977-10-12 1978-10-12 Dial with time display visible at night only* and method of making same dial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1244077A CH612312GA3 (en) 1977-10-12 1977-10-12 Method of manufacturing a dial provided, among other things, with luminescent indices which are visible only at night, and dial obtained by this method

Publications (2)

Publication Number Publication Date
CH612312B CH612312B (en)
CH612312GA3 true CH612312GA3 (en) 1979-07-31

Family

ID=4383045

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1244077A CH612312GA3 (en) 1977-10-12 1977-10-12 Method of manufacturing a dial provided, among other things, with luminescent indices which are visible only at night, and dial obtained by this method

Country Status (2)

Country Link
JP (1) JPS5491272A (en)
CH (1) CH612312GA3 (en)

Also Published As

Publication number Publication date
JPS5491272A (en) 1979-07-19
CH612312B (en)

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