silicon photodiode การใช้

• The light meter used a dual-concentric segmented silicon photodiode to provide spot or center-weighted readings.
• The Advanced Vela satellites were additionally equipped with two non-imaging silicon photodiode sensors called " bhangmeters " which monitored light levels over sub-millisecond intervals.
• When the signal current from the silicon photodiode was too large, the input stage of the amplifier would saturate and cause undesirable delays when the optical signal was removed.
• The DP-3 introduced three innovations : a silicon photodiode light meter ( a first for Nikon SLRs ) for faster and more accurate light readings, a five-stage center-the-LED exposure control system using + / o /  " LEDs, and an eyepiece blind.
• The FM3A's metering information system consisted of a match-needle system using two needles pointing along a vertical shutter speed scale on the left side of the viewfinder to indicate the readings of the built-in 60 / 40 % centerweighted silicon photodiode light meter versus the actual camera settings.
• The major improvements in the FM2 compared to the FM were silicon photodiode light meter sensors, limited automatic dedicated electronic flash control and, most famously, a mechanically-timed vertical metal shutter ( bearing mounted for reduced friction and extended life ) reaching a top speed of an unprecedented 1 / 4000th second, with an X-sync of 1 / 200.
• The CLE has an electronic focal plane shutter to 1 / 1000 seconds, and a through-the-lens ( TTL ) silicon photodiode ( SPD ) exposure meter with aperture-priority automatic or manual exposure, and automated ambient and flash exposure metering system continuing to work and dynamically adjusting the shutter speed and TTL, off the film ( OTF ) flash during the exposure itself.