OPTICAL FILTER DEVICE FOR ILLUMINATING A SAMPLE
An optical filter device (102) for illuminating a sample (104) comprises a light supply unit (108) configured to generate input light (110) of a predetermined spectral bandwidth in a collinear manner, an acousto-optic tunable filter (112) configured to receive the input light (110) and to emit diffr...
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| creator | Krishnamachari, Vishnu Vardhan |
| description | An optical filter device (102) for illuminating a sample (104) comprises a light supply unit (108) configured to generate input light (110) of a predetermined spectral bandwidth in a collinear manner, an acousto-optic tunable filter (112) configured to receive the input light (110) and to emit diffracted output light (126) including multiple wavelengths from the spectral bandwidth at exit angles towards the sample (104), said exit angles defining an angular spread (C) among the multiple wavelengths of the output light (126). The angular spread (C) among the multiple wavelengths of the output light (126) is determined by an angular characteristic (W2-W5) varying from a minimum wavelength to a maximum wavelength. The angular characteristic (W2-W5) has an extremum at an intermediate wavelength between the minimum wavelength and the maximum wavelength to provide at least one group (P1-P3, T1-T3) of different wavelengths having the same exit angle. |
| format | Patent |
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The angular spread (C) among the multiple wavelengths of the output light (126) is determined by an angular characteristic (W2-W5) varying from a minimum wavelength to a maximum wavelength. The angular characteristic (W2-W5) has an extremum at an intermediate wavelength between the minimum wavelength and the maximum wavelength to provide at least one group (P1-P3, T1-T3) of different wavelengths having the same exit angle.</description><language>eng ; fre ; ger</language><subject>DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ; FREQUENCY-CHANGING ; NON-LINEAR OPTICS ; OPTICAL ANALOGUE/DIGITAL CONVERTERS ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICAL LOGIC ELEMENTS ; OPTICS ; PHYSICS ; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230308&DB=EPODOC&CC=EP&NR=4145207A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230308&DB=EPODOC&CC=EP&NR=4145207A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Krishnamachari, Vishnu Vardhan</creatorcontrib><title>OPTICAL FILTER DEVICE FOR ILLUMINATING A SAMPLE</title><description>An optical filter device (102) for illuminating a sample (104) comprises a light supply unit (108) configured to generate input light (110) of a predetermined spectral bandwidth in a collinear manner, an acousto-optic tunable filter (112) configured to receive the input light (110) and to emit diffracted output light (126) including multiple wavelengths from the spectral bandwidth at exit angles towards the sample (104), said exit angles defining an angular spread (C) among the multiple wavelengths of the output light (126). The angular spread (C) among the multiple wavelengths of the output light (126) is determined by an angular characteristic (W2-W5) varying from a minimum wavelength to a maximum wavelength. 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The angular spread (C) among the multiple wavelengths of the output light (126) is determined by an angular characteristic (W2-W5) varying from a minimum wavelength to a maximum wavelength. The angular characteristic (W2-W5) has an extremum at an intermediate wavelength between the minimum wavelength and the maximum wavelength to provide at least one group (P1-P3, T1-T3) of different wavelengths having the same exit angle.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | OPTICAL FILTER DEVICE FOR ILLUMINATING A SAMPLE |
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