CA2001829A1 - Laser-attenuative optical filter - Google Patents

Laser-attenuative optical filter

Info

Publication number
CA2001829A1
CA2001829A1 CA2001829A CA2001829A CA2001829A1 CA 2001829 A1 CA2001829 A1 CA 2001829A1 CA 2001829 A CA2001829 A CA 2001829A CA 2001829 A CA2001829 A CA 2001829A CA 2001829 A1 CA2001829 A1 CA 2001829A1
Authority
CA
Canada
Prior art keywords
absorption
laser radiation
laser
optical filter
nanometers
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
CA2001829A
Other languages
French (fr)
Other versions
CA2001829C (en
Inventor
Michael J. Lubianetsky
Robert A. Sallavanti
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.)
Gentex Corp
Original Assignee
Gentex Corp
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 Gentex Corp filed Critical Gentex Corp
Publication of CA2001829A1 publication Critical patent/CA2001829A1/en
Application granted granted Critical
Publication of CA2001829C publication Critical patent/CA2001829C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Lasers (AREA)
  • Laser Surgery Devices (AREA)

Abstract

An optical filter for absorbing neodymium YAG-doubled laser radiation at 532 nanometers, comprising a polymeric matrix of transparent polycarbonate containing platinum deuteroporphyrin IX dimethyl ester, has an optical density of 1.8 at 532 nm while having a photopic luminous visible transmission of 53.8%. Optionally, the filter may contain other additives for absorption at other laser wavelengths, such as vanadyl tetra-4-tert-butylphthalacyanine for absorption of ruby laser radiation at 694 nanometors and tris(p-diethylaminophenyl) aminium hexafluoroantimonate for absorption of neodymium YAG laser radiation at 1064 nanometers.
CA002001829A 1988-11-25 1989-10-31 Laser-attenuative optical filter Expired - Fee Related CA2001829C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27593388A 1988-11-25 1988-11-25
US07/275933 1988-11-25

Publications (2)

Publication Number Publication Date
CA2001829A1 true CA2001829A1 (en) 1990-05-25
CA2001829C CA2001829C (en) 2000-04-11

Family

ID=23054422

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002001829A Expired - Fee Related CA2001829C (en) 1988-11-25 1989-10-31 Laser-attenuative optical filter

Country Status (6)

Country Link
JP (1) JPH02199405A (en)
CA (1) CA2001829C (en)
DE (1) DE3938688C2 (en)
FR (1) FR2640053B1 (en)
GB (1) GB2225445B (en)
IT (1) IT1236817B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933110A (en) * 1988-12-28 1990-06-12 American Cyanamid Company Optical radiation shield for protection from multiple lasers
GB9210952D0 (en) * 1992-05-22 1992-07-08 Pilkington Plc Optical filter
DE102004055655B4 (en) * 2004-11-15 2006-07-27 Carl Zeiss Ag Laser protection system for an optical observation device, comprises a casting polymer matrix filter for absorbing laser radiation, which is brought in before to the objective of the observation device in the radiation detection bands
CN105829926B (en) 2013-12-20 2019-11-26 肖特股份有限公司 Optical filter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687863A (en) * 1970-05-25 1972-08-29 Gen Telephone & Elect Optical filters containing tetraphenyl-porphins and method of making same
US4622174A (en) * 1984-06-05 1986-11-11 Barnes Engineering Company Transparent protective laser shield
US4657345A (en) * 1985-03-11 1987-04-14 Barnes Engineering Company Laser shield and method of making same
US4885114A (en) * 1987-04-22 1989-12-05 Barnes Engineering Co. Metallized tetra((meso)-5-methyl-2-thiophene)porphines, platinum (5-bromo octaethylporphine) and optical filters containing same

Also Published As

Publication number Publication date
IT1236817B (en) 1993-04-02
DE3938688A1 (en) 1990-05-31
FR2640053B1 (en) 1993-12-31
CA2001829C (en) 2000-04-11
GB2225445A (en) 1990-05-30
GB2225445B (en) 1992-12-23
FR2640053A1 (en) 1990-06-08
GB8924481D0 (en) 1989-12-20
IT8922488A0 (en) 1989-11-23
JPH02199405A (en) 1990-08-07
DE3938688C2 (en) 1999-03-25
IT8922488A1 (en) 1991-05-23

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