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US 10,948,638 B2Granted
Spatial and spectral filtering apertures and optical imaging systems including the same
AssigneeStryker European Operations Limited
InventorFrederick Allen Moore
Life of this patent
Estimating the term…
Abstract
A filter includes a central filter region, the central filter region to transmit a first wavelength range, a peripheral filter region, the peripheral filter region to block a second wavelength range, and a transition filter region between the central and peripheral filter regions, the transition filter region to transmit or block the second wavelength range differently than the second wavelength range is to be transmitted or blocked in the central and peripheral filter regions. More generally, there may be “N” regions and up to N-1 transition regions.
Claims19
A system, comprising:
- a filter including:
- a central filter region, the central filter region to transmit a first wavelength range;
- a peripheral filter region, the peripheral filter region to block a second wavelength range and to transmit the first wavelength range;
- and
- a transition filter region between the central and peripheral filter regions, the transition filter region including a plurality of first portions and a plurality of second portions arranged in a pattern configured to apodize the boundary between the central and peripheral filter regions, said first portions for blocking the second wavelength range and said second portions for transmitting the second wavelength range, both the first and second portions transmitting the first wavelength range wherein the first wavelength range includes fluorescence light and the second wavelength range includes visible light, and
- the fluorescence light has a lower intensity compared to that of the visible light.
3 more elements
A system, comprising:
- a filter including:
- a central filter region, the central filter region to transmit a first wavelength range and a second wavelength range;
- a peripheral filter region, the peripheral filter region to block the second wavelength range and to transmit the first wavelength range;
- and
- a transition filter region between the central and peripheral filter regions, the transition filter region to transmit more of the second wavelength range than the peripheral filter region and less of the second wavelength range than the central filter region, wherein the transition filter region includes a plurality of first portions and a plurality of second portions arranged in a pattern configured to apodize the boundary between the central and peripheral filter regions, said first portions that are to block the second wavelength range and second portions that are to transmit the second wavelength range, wherein both the first and second portions transmitting the first wavelength range;
- and
- the first wavelength range includes fluorescence light and the second wavelength range includes visible light, and the fluorescence light has a lower intensity compared to that of the visible light.
4 more elements
Dependencies are inferred from the claim text.