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Galvo-Galvo Scan Head and Controller![]()
LSKGG4 4 kHz Galvo-Galvo Scanner Controller Scan Head Application Idea Galvo-Galvo Scanner Incorporated into a Cerna® DIY Microscope System Galvo-Galvo Scanner ![]() Please Wait ![]() Click for Details Cutaway View of Galvo-Galvo Scan Head The scan lens being used with the scan head needs to be positioned such that its focus is at the midpoint between the X and Y Mirrors. The distance between the mirrors is indicated by the green line. For the input, that distance corresponds to 27.255 mm, while for the output, that corresponds to 29.045 mm. The input port has internal SM05 threads, internal SM1 threads, and four Ø6 mm bores for a 30 mm cage system, while the output port has internal SM1 threads and four 4-40 taps for a 30 mm cage system. Features
Our LSKGG4(/M) Galvo-Galvo Scanner contains two galvo scan mirrors that deflect an incident laser beam in X and Y. Identical to the galvo-galvo scanner used in our Bergamo® II multiphoton microscopes and complete Cerna®-based confocal systems, each mirror has a mechanical scan range of ±7.5°, corresponding to an optical scan range of ±15°. This range is large enough to explore the entire diffraction-limited FN20 field of view of Thorlabs' SL50 scan lenses for laser scanning microscopy. A National Instruments (NI) 68-pin connector is available to directly control and monitor the scanner via an NI card or breakout box (not included). The beam can also be steered by supplying DC, sine, or sawtooth wave drive signals through two BNC connectors. For sine wave signals, a maximum scan rate of 500 Hz is supported. Two additional BNC connectors provide X and Y position feedback signals. This scanner is also compatible with Vidrio's ScanImage software. Each scan mirror has a protected silver coating that provides high reflectance in the visible and NIR; see the Specs tab for details. Since the coating is metallic, its performance varies minimally over the ±7.5° mechanical scan range of the mirror. The scan head is connected to the controller using the included DB25 cable. If using the BNC input connectors to drive the galvo mirrors, a drive voltage of ±10 V at an impedance of 200 kΩ will be required for each axis. The BNC output connectors have a voltage range of ±3.75 V and an impedance of 2 kΩ. ![]() Click for Details The LSKGG4 galvo-galvo scanner can be incorporated into a DIY laser scanning microscopy setup. Mounting Please note that the scan lens needs to be positioned such that its entrance pupil is at the midpoint between the galvo mirrors; when being used at the input, the distance is 27.255 mm, while at the output, the distance is 29.045 mm. For the CLS-SL Scan Lens, an LCP02(/M) Cage System Size Adapter can be used to convert the 30 mm cage system to a 60 mm cage system to mount and position this scan lens at the correct distance using a LCP8S Cage Plate. To mount an SL50-CLS2, SL50-2P2, or SL50-3P Scan Lens at the correct distance from the scanner a special adapter is available by contacting Tech Support. The scan head weighs 0.56 kg, so it may be useful to support it directly using a Ø1/2" post or Ø1" post. Four 1/4"-20 tapped holes (M6) are located on the bottom.
![]() Click to Enlarge Typical Reflectance of One Galvo Mirror at 45° AOI Please note that lot-to-lot variations will occur in the reflectance. The table to the left contains minimum average reflectance values over the recommended wavelength range. ![]() Click for Details Cutaway View of Galvo-Resonant Scan Head The scan lens being used with the scan head needs to be positioned such that its focus is at the midpoint between the X and Y Mirrors. The distance between the mirrors is indicated by the green line. For the input, that distance corresponds to 27.255 mm, while for the output, that corresponds to 29.045 mm. The input port has internal SM05 threads, internal SM1 threads, and four Ø6 mm bores for a 30 mm cage system, while the output port has internal SM1 threads and four 4-40 taps for a 30 mm cage system.
X IN and Y INBNC Female![]()
X OUT and Y OUTBNC Female![]()
DAQNI 68-Pin Connector*![]() * The impedances listed in the table below are provided for cases where the connector is used a non-NI DAQ card or function generator. They do not need to be taken into account if an NI cable is used to connect directly to an NI card.
LSKGG4(/M) Shipping List![]() Click to Enlarge Item # Shown: LSKGG4 Each Galvo-Galvo Scanner Includes the Following:
Note because the galvo-galvo scanner can be steered using multiple methods of input signals, neither BNC cables nor an NI 68-pin cable are included.
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