  In the first part of the paper, a CAOS line camera is introduced for spectral
imaging of one dimensional (1-D) or line targets. The proposed spectral camera
uses both a diffraction grating as well as a cylindrical lens optics system to
provide line imaging along the line pixels direction of the image axis and
Fourier transforming operations in the orthogonal direction to provide line
pixels optical spectrum analysis. The imager incorporates the Digital
Micro-mirror Device (DMD)-based Coded Access Optical Sensor (CAOS) structure.
The design includes a line-by-line scan option to enable two dimensional (2-D)
spectral imaging. For the first time, demonstrated is line style spectral
imaging using a 2850 K color temperature white light target illumination source
along with visible band color bandpass filters and a moving mechanical pinhole
to simulate a line target with individual pixels along 1-D that have unique
spectral content. A ~412 nm to ~732 nm input target spectrum is measured using
a 38 by 52 CAOS pixels spatial sampling grid providing a test image line of 38
pixels with each pixel providing a designed spectral resolution of ~6.2 nm. The
spectral image is generated using the robust Code Division Multiple Access
(CDMA) mode of the camera. The second part of the paper demonstrates for the
first time the High Dynamic Range (HDR) operation of the Frequency Division
Multiple Access (FDMA)-Time Division Multiple Access (TDMA) mode of the CAOS
camera. The FDMA-TDMA mode also feature HDR recovery like the Frequency
Modulation (FM)-TDMA mode, although at a much faster imaging rate and a higher
Signal-to-Noise Ratio (SNR) as more than one CAOS pixel is extracted at a time.
