US 12,422,401 B2
Capillary electrophoresis device
Kentaro Osawa, Tokyo (JP); and Manabu Shiozawa, Tokyo (JP)
Assigned to HITACHI HIGH-TECH CORPORATION, Tokyo (JP)
Appl. No. 18/011,284
Filed by HITACHI HIGH-TECH CORPORATION, Tokyo (JP)
PCT Filed Jul. 31, 2020, PCT No. PCT/JP2020/029496
§ 371(c)(1), (2) Date Dec. 19, 2022,
PCT Pub. No. WO2022/024368, PCT Pub. Date Feb. 3, 2022.
Prior Publication US 2023/0228709 A1, Jul. 20, 2023
Int. Cl. G01N 27/447 (2006.01)
CPC G01N 27/44721 (2013.01) 12 Claims
OG exemplary drawing
 
1. A capillary electrophoresis device comprising:
a light source unit;
an irradiation optical unit that causes light emitted from the light source unit to be reciprocally transmitted through a capillary; and
a first light detection unit that detects an optical signal based on the light reciprocally transmitted through the capillary, wherein
the irradiation optical unit includes,
in order from a side of the light source unit,
a polarization separator that transmits light of a first polarization component, which is one polarization component out of polarization components of the light emitted from the light source unit, and reflects light of a second polarization component which is another polarization component, and
a λ/4 plate provided at a preceding stage of the capillary, and
a reflector that reflects the light of the first polarization component which has passed through the capillary in a direction toward the capillary.