The fiber optic spectrometer AvaSpec 2048 are 2 optical benches with 75 mm focal length, developed in a symmetrical Czerny-Turner design.

Light enters the optical bench through a standard SMA905 connector (1) and is collimated by a spherical mirror (2). A plane grating (3) diffracts the collimated light; a second spherical mirror (4) focuses the resulting diffracted light. An image of the spectrum is projected onto a 1-dimensional linear detector array (5).

The optical bench has a number of components installed inside, allowing a wide variety of different configurations, depending on the intended application. The choice of these components such as the diffraction grating, entrance slit, order sorting filter, and detector coating have a strong influence on system specifications.

AvaBench-75 technical data Focal length 75 mm Numerical aperture 0.07 Stray light < 0.1 % Detector SONY 2048 Dimensions, weight 120x91 x 21 mm, 255 gr.