OPTICAL SYSTEM AND SPECIMEN ANALYZER

• Main Authors: TAGAWA AYATO, YAMADA KAZUHIRO, KUWANA TAKUYA, SUGIYAMA TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 16.05.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TESTING

To provide an optical system and a specimen analyzer capable of achieving miniaturization.SOLUTION: An optical system 100 includes: a light source 111 for emitting light; an irradiation optical system IS for irradiating illumination light in which a plurality of diffracted light beams generated by a diffraction optical element 114 are distributed; a flow cell 101 in which a sample containing cells is caused to flow; and light receiving units 123, 133, 143 for receiving light generated from the cells flowing in the flow cell 101 by irradiation of the illumination light. The system irradiates illumination light including zero-order diffracted light whose relative intensity relative to another diffracted light is 10 times or less at a position where the cells in the flow cell 101 pass.SELECTED DRAWING: Figure 3 【課題】小型化を実現可能な光学システムおよび検体分析装置を提供する。【解決手段】光学システム１００は、光を出射する光源１１１と、回折光学素子１１４により生じた複数の回折光が分布する照明光を照射する照射光学系ＩＳと、細胞を含む試料を流すフローセル１０１と、照明光の照射により、フローセル１０１を流れる細胞から生じた光を受光する受光部１２３、１３３、１４３と、を備え、他の回折光に対する相対強度が１０倍以下である０次回折光を含む照明光をフローセル１０１の細胞が通る位置に照射する。【選択図】図３