LIGHT DETECTOR, LIGHT DETECTION SYSTEM, LIDAR DEVICE, AND MOBILE BODY

• Main Authors: SASAKI KEITA, FUJIWARA IKUO, SUZUKI KAZUHIRO, SHIMIZU MARIKO, KANEKO RYOMA, KWON HONAM
• Format: Patent
• Language: English; Japanese
• Published: 28.09.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; BASIC ELECTRIC ELEMENTS; COLORIMETRY; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SEMICONDUCTOR DEVICES; TESTING

To provide a light detector, a light detection system, a rider device, and a movable body, capable of improving detection efficiency.SOLUTION: According to an embodiment, a light detector includes an element region, a light concentrator, a structure part, and a light-shielding part. The element region includes a first conductivity-type first semiconductor region and a second conductivity-type second semiconductor region. The light concentrator is separated from the element region in a first direction. The light concentrator is configured to concentrate light incident thereon. The structure part is arranged with the element region in a direction crossing the first direction, and has a different refractive index from the element region. The light-shielding part is provided between the element region and the light concentrator, and has an opening. At least a portion of the light incident on the light concentrator is able to be incident on the element region by passing through the opening.SELECTED DRAWING: Figure 1 【課題】検出効率を向上可能な、光検出器、光検出システム、ライダー装置及び移動体を提供する。【解決手段】実施形態によれば、光検出器は、素子領域と、集光部と、構造部と、遮光部と、を含む。前記素子領域は、第１導電形の第１半導体領域と、第２導電形の第２半導体領域と、を含む。前記集光部は、前記素子領域と第１方向において離れて設けられ、入射した光を集光可能である。前記構造部は、前記第１方向と交差する方向において前記素子領域と並び、前記素子領域と異なる屈折率を有する。前記遮光部は、前記素子領域と前記集光部との間に設けられ、開口部を有する。前記集光部に入射した光の少なくとも一部をは、前記開口部を通って前記素子領域に入射可能である。【選択図】図１