KR960024258U - Dust accumulation detection circuit using optical element - Google Patents

Dust accumulation detection circuit using optical element

Info

Publication number
KR960024258U
KR960024258U KR2019940034133U KR19940034133U KR960024258U KR 960024258 U KR960024258 U KR 960024258U KR 2019940034133 U KR2019940034133 U KR 2019940034133U KR 19940034133 U KR19940034133 U KR 19940034133U KR 960024258 U KR960024258 U KR 960024258U
Authority
KR
South Korea
Prior art keywords
optical element
detection circuit
dust accumulation
accumulation detection
dust
Prior art date
Application number
KR2019940034133U
Other languages
Korean (ko)
Other versions
KR0128537Y1 (en
Inventor
김영기
Original Assignee
포항종합제철주식회사
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 포항종합제철주식회사 filed Critical 포항종합제철주식회사
Priority to KR2019940034133U priority Critical patent/KR0128537Y1/en
Publication of KR960024258U publication Critical patent/KR960024258U/en
Application granted granted Critical
Publication of KR0128537Y1 publication Critical patent/KR0128537Y1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dc-Dc Converters (AREA)
KR2019940034133U 1994-12-14 1994-12-14 Dust accumulation detecting circuit using optical components KR0128537Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019940034133U KR0128537Y1 (en) 1994-12-14 1994-12-14 Dust accumulation detecting circuit using optical components

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019940034133U KR0128537Y1 (en) 1994-12-14 1994-12-14 Dust accumulation detecting circuit using optical components

Publications (2)

Publication Number Publication Date
KR960024258U true KR960024258U (en) 1996-07-22
KR0128537Y1 KR0128537Y1 (en) 1998-12-01

Family

ID=19401421

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019940034133U KR0128537Y1 (en) 1994-12-14 1994-12-14 Dust accumulation detecting circuit using optical components

Country Status (1)

Country Link
KR (1) KR0128537Y1 (en)

Also Published As

Publication number Publication date
KR0128537Y1 (en) 1998-12-01

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