| 摘要 |
<p>1,029,844. Exposure control devices. EASTMAN KODAK CO. Jan. 13,1965 [Jan. 13,1964] No. 1479/65. Heading G2A. An exposure control device comprises a photo resistive cell 11 subjected to scene light and included in one leg of a Wheatstone bridge circuit including an electrical measuring instrument 19 which controls an exposure regulating device. The exposure regulating device may be a diaphragm vane 34 Fig. 2 (not shown) having an aperture 36 cooperating with taking lens 38. A spring 26 maintains the vane in a predetermined intermediate position, when switch 22, Fig. 1, is opened or upon failure of battery 20.</p> |
