Abstract A device for timing photographic shutters, functions related thereto (i.e., sync advance or delay), or any occurrence that can be translated into a pulse of light within the timing range of the device. The device comprises a base casing the top wall of which forms an unobstructed platform to support various types of camera shutters in overlying relation to a photocell. An upper casing, supported by hollow columns in elevated relation from the base casing, carries on its bottom wall a downwardly directed lamp vertically above the photocell. The forward wall of the upper casing has a window for eye-level readout of shutter time. The two casings individually contain electronic means jointly necessary to obtain the readout time, power and signals from the lower to the upper casing being delivered by a cable through one of the hollow columns.
A unitary device for timing photographic shutters comprising: a base casing; an upper casing; means supporting the upper casing in elevated position from the base casing; a downwardly directed lamp carried by the bottom wall of the upper casing; a photocell in the base casing vertically below the lamp; means on the top wall of the base casing constructed to support a camera shutter and to pass light coming through the shutter to said photocell; circuit means in the base casing for receiving the siGnal from said photocell; and electronic timing means including a digital read-out in the upper casing and having connections receiving the signal from said photocell to time its effective duration.
Claim 2
Dependent Claim
114 words
A unitary device for timing photographic shutters comprising: a base casing; an upper casing; means supporting the upper casing in elevated position from the base casing; a downwardly directed lamp carried by the bottom wall of the upper casing; a photocell in the base casing vertically below the lamp; means on the top wall of the base casing constructed to support a camera shutter and to pass light coming through the shutter to said photocell; circuit means in the base casing for receiving the siGnal from said photocell; and electronic timing means including a digital read-out in the upper casing and having connections receiving the signal from said photocell to time its effective duration.
Claim 3
Dependent Claim
51 words
The device of claim 1, said upper casing having an input for the cable from the sync contact of the camera shutter, and circuit means connected to said input and operative to activate the timing means to thereby measure the effective time between shutter opening and sync contact or vice versa.
Claim 4
Dependent Claim
28 words
The device of claim 1 wherein said means supporting the upper casing comprises a pair of hollow columns, and wherein said connections pass through one of said columns.
Claim 5
Dependent Claim
34 words
The device of claim 1 having selective circuitry to render the digital read-out effective to count light pulses received by said photocell from an illuminated motion picture camera shutter or a motion picture projector.
Claim 6
Dependent Claim
24 words
The device of claim 4 wherein said selective circuitry includes means to stop the counting of light pulses at the end of 10 seconds.