Imaging system and imaging device having a random optical filter array

An imaging device, comprising:

• a random optical filter array that has a plurality of concave lenses and a plurality of optical filters having different transmission characteristics;
• a photodiode that receives light that has passed through the random optical filter array;
• and
• an AD converter that converts the light received by the photodiode into digital data,
• wherein the plurality of concave lenses are located between the plurality of optical filters and the photodiode, or the plurality of optical filters are located between the plurality of concave lenses and the photodiode,
• wherein the digital data and modulation information of the random optical filter array are used to generate image data,
• wherein the modulation information is a sampling matrix,
• wherein [y1 y2 . . . yn]T=A [x1,1 x1,2 . . . x1,m . . . xn,1 xn,2 . . . xn,m]T,
• wherein the digital data is the [y1 y2 . . . yn]T, the image data is the [x1,1 x1,2 . . . x1,m . . . xn,1 xn,2 . . . xn,m]T, the sampling matrix is the A, and
• wherein the sampling matrix is different from a second sampling matrix for a second random optical filter array having the plurality of optical filters and not having the plurality of concave lenses.

An imaging system, comprising:

• a random optical filter array that has a plurality of concave lenses and a plurality of optical filters having different transmission characteristics;
• a photodiode that receives light that has passed through the random optical filter array;
• an AD converter that converts the light received by the photodiode into digital data;
• and
• a generation circuit that generates image data using the digital data and modulation information of the random optical filter array,
• wherein the plurality of concave lenses are located between the plurality of types of optical filters and the photodiode, or the plurality of optical filters are located between the plurality of concave lenses and the photodiode,
• wherein the modulation information is a sampling matrix, and
• wherein the sampling matrix is different from a second sampling matrix for a second random optical filter array having the plurality of optical filters and not having the plurality of concave lenses.

An imaging device, comprising:

• a random optical filter array that has a plurality of concave lenses and a plurality of optical filters having different transmission characteristics;
• a photodiode that receives light that has passed through the random optical filter array;
• and
• an AD converter that converts the light received by the photodiode into digital data,
• wherein the plurality of concave lenses are located between the plurality of optical filters and the photodiode, or the plurality of optical filters are located between the plurality of concave lenses and the photodiode,
• wherein the digital data and modulation information of the random optical filter array are used to generate image data,
• wherein the modulation information is a sampling matrix, and
• wherein the sampling matrix is different from a second sampling matrix for a second random optical filter array having the plurality of optical filters and not having the plurality of concave lenses.

An imaging system, comprising:

• a random optical filter array that has a plurality of concave lenses and a plurality of optical filters having different transmission characteristics;
• a photodiode that receives light that has passed through the random optical filter array;
• an AD converter that converts the light received by the photodiode into digital data;
• and
• a generation circuit that generates image data using the digital data and modulation information of the random optical filter array,
• wherein the plurality of concave lenses are located between the plurality of types of optical filters and the photodiode, or the plurality of optical filters are located between the plurality of concave lenses and the photodiode,
• wherein the modulation information relates to a point-spread function corresponding to the plurality of concave lenses.

An imaging device, comprising:

• a random optical filter array that has a plurality of concave lenses and a plurality of optical filters having different transmission characteristics;
• a photodiode that receives light that has passed through the random optical filter array;
• and
• an AD converter that converts the light received by the photodiode into digital data,
• wherein the plurality of concave lenses are located between the plurality of optical filters and the photodiode, or the plurality of optical filters are located between the plurality of concave lenses and the photodiode,
• wherein the digital data and modulation information of the random optical filter array are used to generate image data, and
• wherein the modulation information relates to a point-spread function corresponding to the plurality of concave lenses.