JPS578264A - Paint for preventing internal reflection of optical member - Google Patents

Paint for preventing internal reflection of optical member

Info

Publication number
JPS578264A
JPS578264A JP8371880A JP8371880A JPS578264A JP S578264 A JPS578264 A JP S578264A JP 8371880 A JP8371880 A JP 8371880A JP 8371880 A JP8371880 A JP 8371880A JP S578264 A JPS578264 A JP S578264A
Authority
JP
Japan
Prior art keywords
paint
optical member
internal reflection
refractive index
light
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.)
Pending
Application number
JP8371880A
Other languages
Japanese (ja)
Inventor
Kenji Hayashi
Yoshiaki Sugano
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP8371880A priority Critical patent/JPS578264A/en
Publication of JPS578264A publication Critical patent/JPS578264A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: A paint for preventing internal reflection of an optical member, highly effective for the prevention of internal reflection, which is obtd. by the incorporation of a metal oxide having refractive index higher than that of the optical member and high blackness.
CONSTITUTION: Optical member 1 such as a lens or prism consists of a lens made of glass of high refractive index of 1.7W1.8 and its side face 1a having a roughly sanded surface which does not transmit light, is coated with internal reflection- preventing paints 2. The paint 2 is prepared by mixing a clear resin obtd. by the copolymn. of a styrenated melamine resin and an acrylic resin, with a metal oxide having high blackness and refractive index of 2.0W3.0 which is higher than that of the optical member 1, as a main pigment. When the paint 2 is applied on side face 1a of the optical member, most of incident light 3 is not reflected as reflected light 4 but refracted as refracted light 5 toward the paint 2 and absorbed in the paint 2. Consequently, internal reflection rate is reduced and internally reflected light is sufficiently absorbed.
COPYRIGHT: (C)1982,JPO&Japio
JP8371880A 1980-06-20 1980-06-20 Paint for preventing internal reflection of optical member Pending JPS578264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8371880A JPS578264A (en) 1980-06-20 1980-06-20 Paint for preventing internal reflection of optical member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8371880A JPS578264A (en) 1980-06-20 1980-06-20 Paint for preventing internal reflection of optical member

Publications (1)

Publication Number Publication Date
JPS578264A true JPS578264A (en) 1982-01-16

Family

ID=13810285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8371880A Pending JPS578264A (en) 1980-06-20 1980-06-20 Paint for preventing internal reflection of optical member

Country Status (1)

Country Link
JP (1) JPS578264A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010087507A1 (en) * 2009-01-30 2010-08-05 Canon Kabushiki Kaisha Antireflection film for optical element, antireflection paint, and optical element
JP2013100456A (en) * 2011-10-20 2013-05-23 Canon Chemicals Inc Internal reflection-preventing black coating material for optical element
JP2014021231A (en) * 2012-07-17 2014-02-03 Canon Chemicals Inc Inner surface antireflection black coating material for optical element
JP2020004610A (en) * 2018-06-28 2020-01-09 パナソニックＩｐマネジメント株式会社 Light guide plate, light guide plate assembly and lighting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010087507A1 (en) * 2009-01-30 2010-08-05 Canon Kabushiki Kaisha Antireflection film for optical element, antireflection paint, and optical element
JP2013100456A (en) * 2011-10-20 2013-05-23 Canon Chemicals Inc Internal reflection-preventing black coating material for optical element
JP2014021231A (en) * 2012-07-17 2014-02-03 Canon Chemicals Inc Inner surface antireflection black coating material for optical element
JP2020004610A (en) * 2018-06-28 2020-01-09 パナソニックＩｐマネジメント株式会社 Light guide plate, light guide plate assembly and lighting device

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