Two-dimensional array spectroscopy method and apparatus

A spectroscope comprises:

• a radiation source configured to provide radiation at a plurality of wavelengths including a first range of wavelengths and a second range of wavelengths;
• a dispersion unit coupled to the radiation source configured to receive the radiation and configured to output the first range of wavelengths angularly displaced from the second range of wavelengths;
• a positioning mechanism coupled to the dispersion unit, wherein the positioning mechanism is configured to position the dispersion unit such that the first range of wavelengths is applied to a first patch of a frame of film but not a second patch of the frame of film at a first time, configured to position the dispersion unit such that the second range of wavelengths is applied to the first patch but not the second patch and the first range of wavelengths is applied to the second patch at a second time, and configured to position the dispersion unit such that the second range of wavelengths is applied to the second patch but not the first patch at a third time;
• and
• a plurality of detectors comprising a first detector and a second detector, wherein the first detector is configured to detect responses from the frame of film from the first patch, and wherein the second detector is independently configured to detect responses from the frame of film from the second patch.

A method comprises:

• illuminating each of a plurality of patches on a frame of media with unique portions of a spectrum, wherein a first portion of the spectrum illuminates a first patch, wherein a second portion of the spectrum illuminates a second patch, and wherein each of the plurality of patches on the frame of media are prerecorded with unique RGB values;
• determining a first amount of responses for each of the plurality of patches on the frame of media in response to the unique portions of the spectrum;
• repositioning the spectrum relative to the frame of media;
• illuminating each of the plurality of patches on the frame of media with other unique portions of the spectrum, wherein a second portion of the spectrum illuminates the first patch, and wherein a third portion of the spectrum illuminates the second patch;
• determining a second amount of responses for each of the plurality of patches on the frame of media in response to the other unique portions of the spectrum;
• and
• determining an RGB to XYZ color space representation associated with the frame of media in response to the first amount of responses, the second amount of responses, and to the unique RGB values.