The SC-5 type sub-miniature fixed frequency resonant optical scanners are electromagnetically driven moving mirror device, which deflects a light beam with a sinusoidal motion. The mirror assembly is attached at the center of a torsion spring. The scanning frequency range of the SC-5 type scanner is from 100 Hz to 1500 Hz, fixed at any one value within the range. The scan angle is inversely proportional to the frequency, and is a function of the mirror size. The standard operating temperature is 0°C to +65°C. Other temperature range and vacuum operation are available upon request.
High device "Q" insures frequency stability, low reaction forces and low electrical drive power. High flexural stiffness provides good resistance to shock and vibration, as well as low wobble, and good scan repeatability. Resonating at the natural frequency makes the device an excellent candidate for long life operation for a multitude of applications which require good imaging with minimal distortion. The scanner is especially suitable for dedicated, high volume, OEM industrial applications. The SC-5 type scanner can easily be incorporated in small size and portable instruments.
Operation at resonant frequency is sustained by a feedback amplifier type ED driver or the AGC driver, using the scanner as a frequency source. The AGC driver also provides a higher amplitude stability (0.01%) and a position output signal. The PLD-1S driver phase locks the scanner to an external clock signal. The PLD-2S driver locks two scanners of the same frequency in a Lissajous pattern to create a circle or an ellipse or to lock two resonant scanners of the same frequency in phase or out of phase. The PLD-2SXY driver locks two resonant scanners to generate a raster scanning system. The PLD-XYG driver locks a resonant scanner (high frequency) with a galvanometer (low frequency) to generate an X,Y raster scanning system.
Applications include: image and pattern forming and recognition, data acquisition, confocal microscopy, ophthalmoscopy, biomedical imaging, mask imaging, quality inspection and outer space and environmental research to name a few.
Special vane configurations, modulating waveforms and shapes are available as a special order (consult EOPC). Drive electronics with different package, regulation and power supply options are available. Special pricing is also available for OEM applications.
ONE FIXED FREQUENCY from the range of 25 to 2,200 Hz. The following should serve as guidelines only.
SC-5 RESONANT OPTICAL SCANNER
| SCAN ANGLE (P-P deg opt) | MIRROR SIZE (mm) | FREQ. (Hz +/-10%) |
| 60° | 15x15 | 25-100 |
| 50° | 10x10 | 100-150 |
| 40° | 8x8 | 150-250 |
| 40° | 7x7 | 250-400 |
| 35° | 7x7 | 400-600 |
| 30° | 7x7 | 600-800 |
| 25° | 7x7 | 800-1,000 |
SC-5-HF HIGH FREQUENCY RESONANT OPTICAL SCANNER
| SCAN ANGLE (P-P deg opt) | MIRROR SIZE (mm) | FREQ. (Hz +/-10%) |
| 40° | 6 dia or 6x6 | 1,200 |
| 35° | 6 dia or 6x6 | 1,500 |
| 30° | 6 dia or 6x6 | 1,800 |
| 25° | 6 dia or 6x6 | 2,200 |
SPECIFICATIONS
SCANNER:
SC-5 size (in inches): 01.00 x 0.63 x 0.46
Scan frequency range: 100 Hz to 1500 Hz
Frequency accuracy: +/-2% at 25°C, closer accuracy available upon request
Scan angle: to 50° peak to peak optical as a function of frequency and mirror size.
Scan frequency range: 100 Hz to 1500 Hz
MIRROR:
Size: up to 10×10mm, as a function of frequency; larger size available
Thickness: 1.0mm, standard; other thickness values available
Flatness: 1/4, 1/2 and 1 wavelength as a function of size
Surface quality: scratch and dig: 60-40
ELECTRICAL:
Drive coil resistance: 150 or 400 ohms as a function of frequency
Sense coil resistance: 950 ohms
Connector: female 4 pin plug on 0.1 inch centers, Molex P/N 22-01-3047 or equiv.
ORDERING INFORMATION
TYPE [SC-5]; MIRROR SIZE [mm]; ANGLE [P-P Deg. optical]; FREQUENCY [Hz]
Example: PART NO. SC5-15×15-60-90. This part number specifies the model SC-5 scanner, a 15mm square mirror, a 60° peak to peak optical scan angle and a 90 Hz operating frequency.
TYPE [SC-5-HF]; MIRROR SIZE [mm]; ANGLE [P-P Deg. optical]; FREQUENCY [Hz]
Example: PART NO. SC5-HF-6×6-40-1200. This part number specifies the model SC-5-HF scanner, a 6mm square mirror, a 40° peak to peak optical scan angle and a 1200 Hz operating frequency.
