公开(公告)号：US20210227665A1

公开(公告)日：2021-07-22

申请号：US16951094

申请日：2020-11-18

申请人： ALPINE ELECTRONICS, INC.

发明人： Teiichi Ichikawa

IPC分类号： H05B45/40 ,  H05B45/37 ,  H05B45/10

摘要： A plurality of infrared LEDs, e.g., four, and a plurality of photodiodes, e.g., two, are arranged side by side in interleaved fashion in the order of an LED1, a PD1, an LED2, an LED3, a PD2, and an LED4, and are arranged slightly ouside a side of the display surface. A threshold value Th is set so as to become small as max(Ei)/max(Aj) calculated from a detection signal of the PD1 when the LED1 emits light, a detection signal of the PD1 when the LED2 emits light, a detection signal of the PD2 when the LED3 emits light, a detection signal of the PD2 when the LED4 emits light, a detection signal of the PD2 when the LED1 emits light, and a detection signal of the PD1 when the LED4 emits light, and the approach of the hand of the user is detected when max(Aj) exceeds the threshold value.

公开(公告)号：US11412104B2

公开(公告)日：2022-08-09

申请号：US16951072

申请日：2020-11-18

申请人： ALPINE ELECTRONICS, INC.

发明人： Teiichi Ichikawa

IPC分类号： H04N1/028 ,  G01S17/89 ,  G01S17/931

摘要： A proximity detection device detects the proximity of an object using a light emitting element and a light receiving element that receives reflected light of irradiation light from the light emitting element reflected by the object. A mirror is provided near the light emitting element to reflect part of the irradiation light emitted from the light emitting element toward an area at which the irradiation light from the light emitting element does not sufficiently arrive, and a mirror is provided near the light receiving element to enable reception of the reflected light from the light emitting element in a wide range.

公开(公告)号：US20210195050A1

公开(公告)日：2021-06-24

申请号：US16951072

申请日：2020-11-18

申请人： ALPINE ELECTRONICS, INC.

发明人： Teiichi Ichikawa

IPC分类号： H04N1/028 ,  G01S17/931 ,  G01S17/89

摘要： A proximity detection device detects the proximity of an object using a light emitting element and a light receiving element that receives reflected light of irradiation light from the light emitting element reflected by the object. A mirror is provided near the light emitting element to reflect part of the irradiation light emitted from the light emitting element toward an area at which the irradiation light from the light emitting element does not sufficiently arrive, and a mirror is provided near the light receiving element to enable reception of the reflected light from the light emitting element in a wide range.

公开(公告)号：US11284490B2

公开(公告)日：2022-03-22

申请号：US16951094

申请日：2020-11-18

申请人： ALPINE ELECTRONICS, INC.

发明人： Teiichi Ichikawa

IPC分类号： H05B45/00 ,  H05B45/40 ,  H05B45/37 ,  H05B45/10 ,  F21Y115/10

摘要： A plurality of infrared LEDs, e.g., four, and a plurality of photodiodes, e.g., two, are arranged side by side in interleaved fashion in the order of an LED1, a PD1, an LED2, an LED3, a PD2, and an LED4, and are arranged slightly outside a side of the display surface. A threshold value Th is set so as to become small as max(Ei)/max(Aj) calculated from a detection signal of the PD1 when the LED1 emits light, a detection signal of the PD1 when the LED2 emits light, a detection signal of the PD2 when the LED3 emits light, a detection signal of the PD2 when the LED4 emits light, a detection signal of the PD2 when the LED1 emits light, and a detection signal of the PD1 when the LED4 emits light, and the approach of the hand of the user is detected when max(Aj) exceeds the threshold value.

公开(公告)号：US20210232259A1

公开(公告)日：2021-07-29

申请号：US17143451

申请日：2021-01-07

申请人： ALPINE ELECTRONICS, INC.

发明人： Teiichi Ichikawa

IPC分类号： G06F3/041 ,  G01S17/04

摘要： Four infrared LEDs and two photodiodes PD are arranged below a lower side of a display surface in the order of an LED1, a PD1, an LED2, an LED3, a PD2, and an LED4. A detection signal A1 of the PD1 when the LED1 emits light, a detection signal A2 of the PD1 when the LED2 emits light, a detection signal A3 of the PD2 when the LED3 emits light, and a detection signal A4 of the PD2 when the LED4 emits light are used to estimate a reflection generation position in the left-right direction, and a threshold Th is set such that the threshold Th increases when the reflection generation position is on the left side, which is a driver's seat side. If the maximum value of A1, A2, A3, and A4 exceeds the threshold Th, the approach of the user's hand is detected.