Patent ID: 11898951
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A forward scattered light detection system, applied to a flow cytometer, comprising:
a laser, configured to emit light rays;
a light focusing assembly, configured to focus the light rays as a light spot;
a first lens, configured to convert the light spot to parallel light rays, wherein a center of the light spot is located on a main optical axis of the first lens;
a blocking assembly, configured to transmit a light ray propagating along and near the main optical axis through the blocking assembly and block most of the light rays propagating in directions other than the main optical axis; and
a first detector, configured to detect an intensity of the light ray transmitted from the blocking assembly to the first detector,
wherein a fluidics system of the flow cytometer is between the light focusing assembly and the first lens, and the main optical axis is perpendicular to and intersected with a flow direction of a cell suspension in the fluidics system,
wherein the blocking assembly comprises a first blocking plate and a second blocking plate arranged on two opposite sides of the first lens,
wherein the second blocking plate is between the first lens and the first detector and close to the first detector, and the first blocking plate is between the first lens and the light focusing assembly,
wherein the first blocking plate is provided with a first slit at a position where the first blocking plate intersects the main optical axis, and the second blocking plate is provided with a second slit at a position where the second blocking plate intersects the main optical axis, and
wherein the first slit and the second slit are parallel to each other and are perpendicular to the main optical axis, and a width of the second slit is less than or equal to a width of the first slit.