A spectrometer module, comprising: a plurality of separate electronic circuit modules, each of said electronic circuit modules comprising an integrated sensor circuit including a light sensitive area occupying part of an area of the integrated sensor circuit, the integrated sensor circuit being arranged to detect incident light within a set wavelength interval, wherein: the plurality of separate electronic circuit modules includes a group of four adjacent electronic circuit modules mounted in a 2x2 arrangement and the light sensitive areas of the electronic circuit modules in the group are arranged on the respective integrated sensor circuits in a corner of the respective electronic circuit module, wherein the group of adjacent electronic circuit modules is mounted so that the light sensitive areas thereof are arranged in vicinity to each other at a center of the 2×2 arrangement, wherein the integrated sensor circuits of different electronic circuit modules in the group are configured to detect light within different set wavelength intervals, and each of the plurality of separate electronic circuit modules is arranged on a separate die, wherein the dies are mounted in a common plane, and an optical module, which is common to said plurality of separate electronic circuit modules and arranged to direct incident light coming from an object towards the light sensitive areas of each of said electronic circuit modules. a plurality of separate electronic circuit modules, each of said electronic circuit modules comprising an integrated sensor circuit including a light sensitive area occupying part of an area of the integrated sensor circuit, the integrated sensor circuit being arranged to detect incident light within a set wavelength interval, wherein: the plurality of separate electronic circuit modules includes a group of four adjacent electronic circuit modules mounted in a 2x2 arrangement and the light sensitive areas of the electronic circuit modules in the group are arranged on the respective integrated sensor circuits in a corner of the respective electronic circuit module, wherein the group of adjacent electronic circuit modules is mounted so that the light sensitive areas thereof are arranged in vicinity to each other at a center of the 2×2 arrangement, wherein the integrated sensor circuits of different electronic circuit modules in the group are configured to detect light within different set wavelength intervals, and each of the plurality of separate electronic circuit modules is arranged on a separate die, wherein the dies are mounted in a common plane, and the plurality of separate electronic circuit modules includes a group of four adjacent electronic circuit modules mounted in a 2x2 arrangement and the light sensitive areas of the electronic circuit modules in the group are arranged on the respective integrated sensor circuits in a corner of the respective electronic circuit module, wherein the group of adjacent electronic circuit modules is mounted so that the light sensitive areas thereof are arranged in vicinity to each other at a center of the 2×2 arrangement, wherein the integrated sensor circuits of different electronic circuit modules in the group are configured to detect light within different set wavelength intervals, and each of the plurality of separate electronic circuit modules is arranged on a separate die, wherein the dies are mounted in a common plane, and an optical module, which is common to said plurality of separate electronic circuit modules and arranged to direct incident light coming from an object towards the light sensitive areas of each of said electronic circuit modules.