Optical sensing module
An optical sensing module is configured to detect a characteristic of a sample. The optical sensing module includes a light source, a light guide plate, a first cladding layer, a light converging layer, a filter layer, and a plurality of sensors. The light source is configured to provide an exciting beam. Positions of the sensors correspond to positions of the holes. After the exciting beam enters the light guide plate, at least one portion of the exciting beam is transmitted to the sample through a portion of the surface of the light guide plate exposed by the holes, the sample is excited by the exciting beam to emit a signal beam, and the signal beam passes through the light converging layer and the filter layer in an order and travels to the sensors. Another optical sensing module is also provided.
1. An optical sensing module, configured to detect a characteristic of a sample, the optical sensing module comprising:
a light source, configured to provide an exciting beam;
a light guide plate, having a first side and a second side opposite to each other;
a first cladding layer, disposed at the first side of the light guide plate, the first cladding layer having a plurality of holes, the holes exposing a portion of a surface of the light guide plate, wherein the sample is placed in at least one of the holes;
a light converging layer, disposed at the second side of the light guide plate;
a filter layer; and
a plurality of sensors, positions of the sensors corresponding to positions of the holes,
wherein after the exciting beam enters the light guide plate, at least one portion of the exciting beam is transmitted to the sample through the portion of the surface of the light guide plate exposed by the holes, the sample is excited by the exciting beam to emit a signal beam, and the signal beam passes through the light converging layer and the filter layer in an order and travels to the sensors.
2. The optical sensing module according to claim 1 , wherein the light converging layer comprises a plurality of light converging lenses, and positions of the light converging lenses correspond to the positions of the holes.
3. The optical sensing module according to claim 1 , wherein the light converging layer comprises a substrate and a covering layer, the covering layer comprises a base and a plurality of light converging structures, the light converging structures are arranged on the base and face the filter layer, and the covering layer covers the substrate.
4. The optical sensing module according to claim 3 , wherein the light converging structures comprise a plurality of triangular columnar structures, the triangular columnar structures extend in a first direction, and the exciting beam propagates along a second direction, wherein the first direction is perpendicular to the second direction.
5. The optical sensing module according to claim 3 , wherein the light converging structures comprise a plurality of trigonal tapers, a plurality of cones, a plurality of trapezoidal pillar structures, or a plurality of trapezoidal cones.
6. The optical sensing module according to claim 1 , wherein the light converging layer comprises a plurality of first light functional elements and a plurality of second light functional elements, wherein positions of the first light functional elements correspond to positions of the second light functional elements, and any one of the first light functional elements is located between two adjacent second light functional elements of the second light functional elements.
7. The optical sensing module according to claim 6 , wherein the first light functional elements comprise a plurality of first light converging elements, and the second light functional elements comprise a plurality of second light converging elements.
8. The optical sensing module according to claim 6 , wherein the first light functional elements comprise a plurality of light transmitting elements, and the second light functional elements comprise a plurality of light shielding elements.
9. The optical sensing module according to claim 6 , wherein the first light functional elements comprise a plurality of first light converging elements, and the second light functional elements comprise a plurality of light shielding elements.
10. The optical sensing module according to claim 6 , wherein the first light functional elements comprise a plurality of first light transmitting elements, and the second light functional elements comprise a plurality of light absorbing elements and a plurality of second light transmitting elements.
11. The optical sensing module according to claim 6 , wherein the first light functional elements comprise a plurality of light transmitting elements, and the second light functional elements comprise a plurality of second light converging elements.
12. The optical sensing module according to claim 1 , wherein the light converging layer is disposed between the light guide plate and the filter layer.
13. The optical sensing module according to claim 1 , wherein the light converging layer is disposed between the filter layer and the sensors.
14. The optical sensing module according to claim 1 , further comprising a passivation layer disposed between the filter layer and the sensors.
15. The optical sensing module according to claim 1 , further comprising a second cladding layer disposed between the light guide plate and the light converging layer.
16. The optical sensing module according to claim 1 , wherein the filter layer comprises an absorption filter layer or an interference filter layer.
17. An optical sensing module, configured to detect a characteristic of a sample, the optical sensing module comprising:
a light source, configured to provide an exciting beam;
a light guide plate, having a first side and a second side opposite to each other;
a first cladding layer, disposed at the first side of the light guide plate, the first cladding layer having a plurality of holes, the holes exposing a portion of a surface of the light guide plate, wherein the sample is placed in at least one of the holes;
a noise-reduction layer, comprising a plurality of filter elements and a plurality of light shielding elements, wherein positions of the filter elements correspond to positions of the holes, and any one of the light shielding elements is located between two adjacent filter elements of the filter elements; and
a plurality of sensors, positions of the sensors corresponding to the positions of the holes,
wherein after the exciting beam enters the light guide plate, at least one portion of the exciting beam is transmitted to the sample through the portion of the surface of the light guide plate exposed by the holes, the sample is excited by the exciting beam to emit a signal beam, a first portion of the signal beam passes through at least one of the filter elements and travels to the sensor, and a second portion of the signal beam is shielded by at least one of the light shielding elements.