소식 SK 하이닉스, ToF 센서 공개
- Aimyon
- 조회 수 595
- 2020.10.27. 16:30
SK하이닉스는 27일 코엑스에서 개막한 '반도체대전(SEDEX) 2020'에서 TOF 이미지센서를 공개했다. 10마이크로미터(㎛) 픽셀로 구성된 센서는 QVGA(320×240) 해상도를 지원한다. SK하이닉스가 TOF 센서를 선보인 건 이번이 처음이다.
구체적인 출시 시점은 공개하지 않았다. SK하이닉스는 “개발을 진행하고 있으며 상용화 시점은 정해지지 않았다”고 전했다.
구글링 해보니까 이런 이야기가 있네요
Why are ToF sensors low resolution?
A ToF imager is a focal plane array that simultaneously encodes the scene’s intensity and depth information at each pixel.
ToF cameras typically consist of an amplitude modulated light source that actively illuminates the scene and is coupled with a correlation sensor at each pixel that is locked-in to the same frequency.
Multiple measurements are obtained with different amount of phase shift between transmitted and detected light.
The amplitude modulation in most ToF cameras is performed at a modulation frequency in the 10–100 MHz range and this frequency controls both the unambiguous range of depths and the depth resolution of the ToF sensor.
Additional electronics is required to implement the correlation measurement individually at each pixel, requiring a significantly larger number of transistors per-pixel.
Thus, while the pixel size of traditional CMOS image sensors have approached close to 1 micron with a fill factor greater than 90%, current generation ToF sensors can only achieve pixel sizes closer to 10 microns with fill factors closer to 10%
전부터 궁금했는데 ToF는
2MP이상 고화소는 안되는걸까요?ㅡㅡㅋ