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GB1290521A - - Google Patents

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Publication number
GB1290521A
GB1290521AGB1290521DAGB1290521AGB 1290521 AGB1290521 AGB 1290521AGB 1290521D AGB1290521D AGB 1290521DAGB 1290521 AGB1290521 AGB 1290521A
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GB
United Kingdom
Prior art keywords
optical
particles
centre wavelength
solid
jan
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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.)
Expired
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Publication of GB1290521ApublicationCriticalpatent/GB1290521A/en
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Abstract

1290521 Optical filters UNITED KINGDOM ATOMIC ENERGY AUTHORITY 23 Jan 1970 [31 Jan 1969] 5306/69 Heading G2J An optical filter of the Christiansen type comprises a dispersion of particles of an optically transparent solid in a further optically transparent solid in intimate contact over the surfaces of said particles, the particles having a refractive index equal to that of the further solid at the centre wavelength of a waveband to be transmitted and an optical dispersion unequal to that of the further solid at the centre wavelength. Preferably the optical dispersions diverge so the wavelength changes from the centre wavelength. The particles are of an optical glass and are dispersed in a plastics material such as polystyrene or polyvinyl naphthalene. Several examples are given of suitable glass/plastics pairs for making such filters.
GB1290521D1969-01-311969-01-31ExpiredGB1290521A (en)

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
GB5306691969-01-31

Publications (1)

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GB1290521Atrue GB1290521A (en)1972-09-27

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ID=9793614

Family Applications (1)

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GB1290521DExpiredGB1290521A (en)1969-01-311969-01-31

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GB (1)GB1290521A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2254036A1 (en)*1973-12-061975-07-04Polaroid Corp
FR2343267A1 (en)*1976-03-051977-09-30Mutzhas Maximilian F PROTECTION FILTER AGAINST RADIATION, ESPECIALLY FOR DIRECT PIGMENTATION BY SUN EXPOSURE
GB2164138A (en)*1981-11-071986-03-12Kei MoriApparatus for uniform illumination employing light diffuser
FR2694641A1 (en)*1992-08-101994-02-11Bridgestone Corp Photodispersing material and its manufacturing process.
CN110806612A (en)*2018-08-062020-02-18张家港康得新光电材料有限公司Optical filter and image sensor with same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2254036A1 (en)*1973-12-061975-07-04Polaroid Corp
FR2343267A1 (en)*1976-03-051977-09-30Mutzhas Maximilian F PROTECTION FILTER AGAINST RADIATION, ESPECIALLY FOR DIRECT PIGMENTATION BY SUN EXPOSURE
GB2164138A (en)*1981-11-071986-03-12Kei MoriApparatus for uniform illumination employing light diffuser
FR2694641A1 (en)*1992-08-101994-02-11Bridgestone Corp Photodispersing material and its manufacturing process.
US5744534A (en)*1992-08-101998-04-28Bridgestone CorporationLight scattering material
CN110806612A (en)*2018-08-062020-02-18张家港康得新光电材料有限公司Optical filter and image sensor with same

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DateCodeTitleDescription
PSPatent sealed
PLNPPatent lapsed through nonpayment of renewal fees

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