抄録
A color-temperature compensating system with an electrically controllable liquid-crystal filter and a color sensor mounted on a video camera has been developed for color image sensing. The filter contains two guest—host liquid-crystal devices with dichroic dyes that have strong light absorption for shorterwavelength light; two devices are necessary because of the spectral difference between the sun and an incandescent lamp as light sources. The filter’s absorption is continuously controlled by the voltage applied to the filter. Because the filter is driven according to spectral information about the illumination detected by the color sensor, the color balance of the video image to be sensed can be compensated automatically and rapidly. This is especially useful for video image shooting in which a video camera experiences changes in illumination color temperatures.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 2275-2281 |
| ページ数 | 7 |
| ジャーナル | Applied optics |
| 巻 | 40 |
| 号 | 14 |
| DOI | |
| 出版ステータス | Published - 2001 5月 10 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 原子分子物理学および光学
- 工学（その他）
- 電子工学および電気工学