Multispectral filter
An optical device may comprise an array of sensor elements that includes a plurality of pixels and a multispectral filter disposed on the array of sensor elements. The multispectral filter may be configured to pass a first transmission percentage of light of a particular spectral range to a first set of pixels of the plurality of pixels and pass a second transmission percentage of light of the particular spectral range to a second set of pixels of the plurality of pixels.
1 . A multispectral filter comprising:
a plurality of filter sections comprising:
a first filter section comprising a first plurality of optical channels,
wherein the first filter section is configured to pass a first transmission percentage of light, and
a second filter section comprising a second plurality of optical channels,
wherein the second filter section is configured to pass a second transmission percentage of light,
the second transmission percentage of light being less than the first transmission percentage of light, and
the second transmission percentage of light being greater than zero.
2 . The multispectral filter of claim 1 , wherein the plurality of filter sections further comprises:
a third filter section comprising a third plurality of optical channels, and
a fourth filter section comprising a fourth plurality of optical channels.
3 . The multispectral filter of claim 2 , wherein the third filter section is configured to pass a third transmission percentage of light,
the third transmission percentage of light being less than the second transmission percentage of light.
4 . The multispectral filter of claim 3 , wherein the fourth filter section is configured to pass a fourth transmission percentage of light,
the fourth transmission percentage of light being less than the third transmission percentage of light.
5 . The multispectral filter of claim 1 , wherein the first plurality of optical channels includes 64 optical channels.
6 . The multispectral filter of claim 1 , further comprising:
a first optical density coating disposed on at least a portion of the first filter section, and
a second optical density coating disposed on at least a portion of the second filter section.
7 . The multispectral filter of claim 1 , wherein the first filter section is configured to pass a first transmission percentage range of light, and
wherein the second filter section is configured to pass a second transmission percentage range of light.
8 . A multispectral filter comprising:
a plurality of filter sections comprising:
a first filter section comprising a first plurality of optical channels,
wherein a first optical channel, of the first plurality of optical channels, is configured to pass a first transmission percentage of light of a spectral range, and a second filter section comprising a second plurality of optical channels,
wherein a second optical channel, of the second plurality of optical channels, is configured to pass a second transmission percentage of the light of the spectral range,
the second transmission percentage being less than the first transmission percentage, and
the second transmission percentage of light being greater than zero.
9 . The multispectral filter of claim 8 , wherein the plurality of filter sections further comprises:
a third filter section comprising a third plurality of optical channels, and
a fourth filter section comprising a fourth plurality of optical channels.
10 . The multispectral filter of claim 9 , wherein a third optical channel, of the third plurality of optical channels, is configured to pass a third transmission percentage of the light of the spectral range,
the third transmission percentage being less than the second transmission percentage.
11 . The multispectral filter of claim 10 , wherein a fourth optical channel, of the fourth plurality of optical channels, is configured to pass a fourth transmission percentage of the light of the spectral range,
the fourth transmission percentage being less than the third transmission percentage.
12 . The multispectral filter of claim 8 , wherein each optical channel, of the first plurality of optical channels, is configured to pass the first transmission percentage of the light of the spectral range.
13 . The multispectral filter of claim 8 , wherein a respective optical channel of each filter section, of the plurality of filter sections, is configured to pass light of a same spectral range.
14 . The multispectral filter of claim 8 , wherein the first optical channel has a same relative position within the first filter section as the second optical channel within the second filter section.
15 . A multispectral filter comprising:
a plurality of filter sections comprising:
a first filter section comprising a first plurality of optical channels,
wherein the first filter section is configured to pass more than a particular transmission percentage of light, and
a second filter section comprising a second plurality of optical channels,
wherein the second filter section is configured to pass a percentage of light that is greater than zero and that is less than or equal to the particular transmission percentage of light.
16 . The multispectral filter of claim 15 , wherein the particular transmission percentage of light is a first transmission percentage of light; and
wherein the second filter section is configured to pass more than a second transmission percentage of light.
17 . The multispectral filter of claim 16 , wherein the plurality of filter sections comprises a third filter section,
wherein the third filter section is configured to pass less than or equal to the second transmission percentage of light.
18 . The multispectral filter of claim 17 , wherein the third filter section is configured to pass more than a third transmission percentage of light.
19 . The multispectral filter of claim 16 , wherein the first transmission percentage of light and the second transmission percentage of light are associated with a same spectral range.
20 . The multispectral filter of claim 15 , wherein each optical channel of the first filter section includes a same optical density coating associated with the particular transmission percentage of light.