OPTICAL FILTER
An optical filter including a polarizer and a visible light blocking filter is described. The polarizer is configured to transmit at least 60 percent of light in a first infrared wavelength range that is incident on the polarizer at normal incidence in a first polarization state, to transmit less th...
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| creator | WHITNEY, Jordan D WHEATLEY, John A DU, Guanglei BENOIT, Gilles J SCHMIDT, Daniel J KIVEL, Edward J BIERNATH, Rolf W SMITH, Kenneth L BALLEN, Todd A |
| description | An optical filter including a polarizer and a visible light blocking filter is described. The polarizer is configured to transmit at least 60 percent of light in a first infrared wavelength range that is incident on the polarizer at normal incidence in a first polarization state, to transmit less than 30 percent of light in a second infrared wavelength that is incident on the polarizer at normal incidence in a second polarization state orthogonal to the first polarization state, and to transmit less than 30 percent of light in a third infrared wavelength range that is incident on the polarizer with a 50 degree angle of incidence in the second polarization state. The visible light blocking filter configured to transmit at least 60 percent of light in the first infrared wavelength range at normal incidence in the first polarization state. |
| format | Patent |
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The polarizer is configured to transmit at least 60 percent of light in a first infrared wavelength range that is incident on the polarizer at normal incidence in a first polarization state, to transmit less than 30 percent of light in a second infrared wavelength that is incident on the polarizer at normal incidence in a second polarization state orthogonal to the first polarization state, and to transmit less than 30 percent of light in a third infrared wavelength range that is incident on the polarizer with a 50 degree angle of incidence in the second polarization state. 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The polarizer is configured to transmit at least 60 percent of light in a first infrared wavelength range that is incident on the polarizer at normal incidence in a first polarization state, to transmit less than 30 percent of light in a second infrared wavelength that is incident on the polarizer at normal incidence in a second polarization state orthogonal to the first polarization state, and to transmit less than 30 percent of light in a third infrared wavelength range that is incident on the polarizer with a 50 degree angle of incidence in the second polarization state. The visible light blocking filter configured to transmit at least 60 percent of light in the first infrared wavelength range at normal incidence in the first polarization state.</description><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</subject><subject>OPTICS</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZODzDwjxdHb0UXDz9AlxDeJhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfGuAcYmZpYmBuaOJsZEKAEAkawclw</recordid><startdate>20200226</startdate><enddate>20200226</enddate><creator>WHITNEY, Jordan D</creator><creator>WHEATLEY, John A</creator><creator>DU, Guanglei</creator><creator>BENOIT, Gilles J</creator><creator>SCHMIDT, Daniel J</creator><creator>KIVEL, Edward J</creator><creator>BIERNATH, Rolf W</creator><creator>SMITH, Kenneth L</creator><creator>BALLEN, Todd A</creator><scope>EVB</scope></search><sort><creationdate>20200226</creationdate><title>OPTICAL FILTER</title><author>WHITNEY, Jordan D ; WHEATLEY, John A ; DU, Guanglei ; BENOIT, Gilles J ; SCHMIDT, Daniel J ; KIVEL, Edward J ; BIERNATH, Rolf W ; SMITH, Kenneth L ; BALLEN, Todd A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3469407A43</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2020</creationdate><topic>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</topic><topic>OPTICS</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>WHITNEY, Jordan D</creatorcontrib><creatorcontrib>WHEATLEY, John A</creatorcontrib><creatorcontrib>DU, Guanglei</creatorcontrib><creatorcontrib>BENOIT, Gilles J</creatorcontrib><creatorcontrib>SCHMIDT, Daniel J</creatorcontrib><creatorcontrib>KIVEL, Edward J</creatorcontrib><creatorcontrib>BIERNATH, Rolf W</creatorcontrib><creatorcontrib>SMITH, Kenneth L</creatorcontrib><creatorcontrib>BALLEN, Todd A</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WHITNEY, Jordan D</au><au>WHEATLEY, John A</au><au>DU, Guanglei</au><au>BENOIT, Gilles J</au><au>SCHMIDT, Daniel J</au><au>KIVEL, Edward J</au><au>BIERNATH, Rolf W</au><au>SMITH, Kenneth L</au><au>BALLEN, Todd A</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OPTICAL FILTER</title><date>2020-02-26</date><risdate>2020</risdate><abstract>An optical filter including a polarizer and a visible light blocking filter is described. The polarizer is configured to transmit at least 60 percent of light in a first infrared wavelength range that is incident on the polarizer at normal incidence in a first polarization state, to transmit less than 30 percent of light in a second infrared wavelength that is incident on the polarizer at normal incidence in a second polarization state orthogonal to the first polarization state, and to transmit less than 30 percent of light in a third infrared wavelength range that is incident on the polarizer with a 50 degree angle of incidence in the second polarization state. The visible light blocking filter configured to transmit at least 60 percent of light in the first infrared wavelength range at normal incidence in the first polarization state.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS |
| title | OPTICAL FILTER |
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