Method and apparatus for digitizing electromagnetic radiation measurements by shutter speed control

A system for digitizing electromagnetic radiation measurements by controlling adjustments of a shutter speed of an electromagnetic radiation sensitive device, the emission of an electromagnetic radiation source illuminating at least one test object in an illumination region, in order to obtain a constant or near-constant signal from an electromagnetic radiation sensitive device, the system comprising:

• A data processor system configured to generate a controlling signal;
• A shutter speed controller responsive to the controlling signal;
• A shutter responsive to the shutter speed controller;
• An illumination region, including a test object, illuminated by the electromagnetic radiation source;
• and
• An electromagnetic radiation sensitive device configured to image the electromagnetic radiation modified by the test object and communicate an output signal representative of the modified electromagnetic radiation to the data processor system, whereby the modified electromagnetic radiation signal is adjustably controllable such that the output signal is constant.

A method of digitizing electromagnetic radiation levels by successive approximation to measure an electromagnetic radiation value, the method comprising:

• Identifying an output target value of an electromagnetic radiation sensitive device receiving electromagnetic radiation signals modified by a test object;
• Defining an initial step value of an analog to digital converter (ADC) connected to the electromagnetic radiation sensitive device;
• Setting the initial step value to be the value of the input of a shutter speed device which corresponds to a Δt time controlling a shutter speed, wherein the shutter speed has an N bit resolution;
• Repeating one or more shutter speed adjustments and corresponding Δt time shutter speeds based on a relationship between the shutter speed output value and Mile ADC value of the output target value for up to N−1 iterations while calculating corresponding Δt time adjustments until the ADC value is equal to the output target value when the adjustments are completed;
• and
• Identifying the final shutter speed output value (final corresponding Δt time adjustment value) as a measure of the value of the electromagnetic radiation signals.

A method of digitizing electromagnetic radiation measurements by controlling adjustments of a shutter speed of an electromagnetic radiation sensitive device, the emission of an electromagnetic radiation source illuminating an illumination region containing a test object, to obtain a constant or near constant signal from the electromagnetic radiation sensitive device, the method comprising:

• Illuminating an illumination region by a plurality of electromagnetic radiation signals;
• Modifying the plurality of electromagnetic radiation signals;
• Recording the plurality of modified electromagnetic radiation signals;
• a Transmitting an output signal corresponding to the plurality of modified electromagnetic radiation signals;
• and
• Controlling the operation of a shutter based on the output signal, whereby the received electromagnetic radiation signals ate adjustably controllable such that the output signal is constant.

An Electronic Device for Controlling a shutter speed adjustment comprised in an electronic radiation sensitive device (101), comprising:

• a Clock (102);
• a Gate (103);
• a Counter (100);
• a Comparator (104);
• a Latch (105);
• a Controller (106);
• Whereby said Counter (100) receivably is connected to a control signal from said electromagnetic radiation sensitive device (101) that is resetting said Counter (100) that starts counting said clock (102) pulses;
• a Stop signal is receivably connected to said electromagnetic radiation sensitive device (101) via said Gate (103) that halts said clock (102) pulses to clock said electromagnetic radiation sensitive device (101) whenever said Stop signal is received;
• said Gate (103) is receivably connected to said Comparator (104) that issue said Stop signal whenever a content of said Counter (100) is equal to a content of said Latch (105) receivably connected to said Controller (106).