发明名称 |
Position detection device, lens barrel, and imaging apparatus |
摘要 |
Provided is a position detection device including a detection unit configured to have a photo-reflector including a light emitter and a light receiver, the light receiver receiving light emitted from the light emitter and reflected by a reflective surface moved in a predetermined direction, the detection unit detecting a movement amount of the reflective surface based on a change in intensity of the received light, and a transparent member configured to be disposed between the reflective surface and the detection unit and to move together with the reflective surface, the transparent member being provided with a light blocking surface configured to block light and a light transmitting surface configured to transmit light, the light blocking surface and the light transmitting surface being arranged in a moving direction of the reflective surface. |
申请公布号 |
US9307125(B2) |
申请公布日期 |
2016.04.05 |
申请号 |
US201314420950 |
申请日期 |
2013.08.07 |
申请人 |
Sony Corporation |
发明人 |
Katsumata Soichiro;Koyama Takashi;Kaneko Shuhei |
分类号 |
H04N5/225;G02B7/04;G02B7/14;G02B7/10;G01D5/347;H04N5/232 |
主分类号 |
H04N5/225 |
代理机构 |
Sony Corporation |
代理人 |
Sony Corporation |
主权项 |
1. A position detection device comprising:
a detection unit configured to have a photo-reflector including a light emitter and a light receiver, the light receiver receiving light emitted from the light emitter and reflected by a reflective surface moved in a predetermined direction, the detection unit detecting a movement amount of the reflective surface based on a change in intensity of the received light; and a transparent member configured to be disposed between the reflective surface and the detection unit and to move together with the reflective surface, the transparent member being provided with a light blocking surface configured to block light and a light transmitting surface configured to transmit light, the light blocking surface and the light transmitting surface being arranged in a moving direction of the reflective surface, wherein a distance from the reflective surface to the photo-reflector is longer than a distance from the light blocking surface to the photo-reflector. |
地址 |
Tokyo JP |