Spectrometer including light filter
A spectrometer is provided and includes a substrate including a transparent material, and a filter array disposed on a first surface of the substrate and including light filters configured to reflect first light. The spectrometer further includes a first light detector into which the first light reflected by the light filters enters, the first light detector being disposed on a second surface of the substrate.
1. A spectrometer comprising:
a substrate comprising a transparent material;
a filter array disposed directly on a first surface of the substrate and comprising light filters configured to reflect first light; and
a first light detector into which the first light reflected by the light filters enters, the first light detector being disposed directly on a second surface of the substrate facing the first surface of the substrate.
2. The spectrometer of claim 1 , wherein the light filters are further configured to respectively transmit first lights of different wavelength bands.
3. The spectrometer of claim 2 , wherein the light filters are further configured to reflect second lights of wavelength bands different than the first lights of different wavelength bands.
4. The spectrometer of claim 2 , further comprising a second light detector into which second light that is passed through the filter array enters, the second light detector being disposed on the filter array.
5. The spectrometer of claim 4 , wherein the light filters are arranged in a 1-dimensional pattern or a 2-dimensional mosaic pattern.
6. The spectrometer of claim 4 , wherein each of the first light detector and the second light detector comprises light detector units respectively corresponding to the light filters.
7. The spectrometer of claim 4 , wherein each of the first light detector and the second light detector comprises any one or any combination of an image sensor, a charge coupled device (CCD), and a photo diode.
8. The spectrometer of claim 4 , wherein any one or any combination of the light filters comprises more than two bandpass filter wavelengths.
9. A spectrometer comprising:
a substrate comprising a transparent material;
a filter array disposed directly on a first surface of the substrate and comprising light filters configured to reflect first light;
a first light detector into which the first light reflected by the light filters enters, the first light detector being disposed directly on a second surface of the substrate facing the first surface of the substrate;
a second light detector into which second light that is passed through the filter array enters, the second light detector being disposed on the filter array; and
a diffraction grating disposed on the second surface of the substrate and configured to transmit incident light incident to the substrate, to the filter array.
10. The spectrometer of claim 9 , wherein the light filters are further configured to respectively transmit first lights of different wavelength bands.
11. The spectrometer of claim 10 , wherein the light filters are further configured to reflect second lights of wavelength bands different than the first lights of different wavelength bands.
12. The spectrometer of claim 9 , wherein the light filters are arranged in a 1-dimensional pattern or a 2-dimensional mosaic pattern.
13. The spectrometer of claim 9 , wherein each of the first light detector and the second light detector comprises light detector units respectively corresponding to the light filters.
14. The spectrometer of claim 9 , wherein each of the first light detector and the second light detector comprises any one or any combination of an image sensor, a charge coupled device (CCD), and a photo diode.
15. The spectrometer of claim 9 , wherein any one or any combination of the light filters comprises more than two bandpass filter wavelengths.