ELECTRO-OPTICAL PRODUCTS CORPORATION
	88-65 76th Avenue • Glendale, NY 11385, USA • Tel: 718-997-8100 • Fax: 718-997-8102 • www.eopc.com

X,Y Raster Optical Scanning Systems

FEATURES AND ADVANTAGES Locking two resonant optical scanners in a master/slave mode Locking a resonant optical scanner with a galvanometer or a polygon in a master/slave mode

	home optical modulators resonant choppers rotating choppers q switches pockels cells a-o modulators e-o modulators beam deflectors shutters and filters shutter/chopper filter selectors tunable filters laser safety shutters interlock shutters modulating systems locked to ext. clock master/slave mode a-o systems e-o systems scanners and deflectors resonant scanners polygon scanners beam deflectors acousto-optical peizo scanners scanning systems locked to ext. clock master/slave mode x,y raster mode a-o systems other products radiometers photo diode amplifiers o/e and e/o converters fiber optic multiplexers fiber optic video links laser vibrometers lock-in amplifiers contact us

SPECIFICATIONS   Frequency Range   5 Hz to 20 kHz   Scanners' Amplitude Stability   0.01% or better   Position Monitor   Analog position output   Phase Adjustment Range   ±45° minimum range   Phase Stability   0.01%   Frequency Ratio Fx/Fy   Factory set to customer's spec.   Operating Temperature Range   0 - 60 °C   Power Input   110V ac or 220V ac, 50-60 Hz, 20W

High speed resonant scanners are used for RASTER SCANNING in both projection and data acquisition applications. They are good candidates for X,Y raster scan systems and systems locked in a master/slave mode. X,Y raster scan systems can be generated by:

An X,Y raster scan system is generated by two resonant scanners. The [sub]system consists of two resonant optical scanners (type SC) locked in a MASTER/SLAVE mode to generate a raster scan. Scanner "X" is high frequency and scanner "Y" is low frequency. The two scanners are ONE FIXED FREQUENCY each, picked from the range of 5 Hz to 20 kHz. They are small size, light weight, low cost and long life devices. They require low power drive electronics and do not radiate any electromagnetic interference (EMI). The scanners have high amplitude stability and very low amplitude jitters; wobble is less than 1 arc sec. The scanners are IR, VIS, UV and high vacuum capable.

Scanner "X" is operating at its resonant frequency Fx. The ratio of the frequency of scanner "X" to the frequency of scanner "Y" (Fy) is "n".

           Fx
     n = ------   , "n" is a whole number and is factory set to 
           Fy        customer's requirements

The PLD-2SXY driver is fully integrated with front panels controls and internal power supplies. The PLD-2SXY-PC driver is a printed circuit board level driver, which requires an external ±15V DC power supply.

APPLICATIONS:

X,Y scanning systems provide inexpensive high performance for limitless applications involving beam deflection: TV, HDTV, for 2D and 3D imaging, lithography, photo typesetting, for color separation, CAD/CAM, high resolution display systems, web inspection and for laser marking systems to name a few. The scanning systems are also used for robotics, medical non-invasive research and testing, transportation, non-impact printing and laser scanning, inspection systems and high speed, high resolution display system and machine vision. Many applications are in the IR & UV wavelength, high vacuum or cryogenic conditions. The scanner withstands shock and vibration, it can be mounted on moving vehicles, moving arms of an inspection system or a robot.

The 16 kHz and the 8 kHz scanners are most suitable to meet the line scan high resolution requirements for TV/HDTV. However, the 8 kHZ scanner with simultaneous bi-directional scanning will produce the same scan line per frame (page) rate with the same pixel placement accuracy. Operating at the frequency of 16 kHz, 8 kHz and 4 kHz eliminates external vibrations. Resonant scanners offer very low cross axis wobble. Scan-to-scan repeatability is well below 1 arc sec PTP optical.

To achieve high resonance frequency, it is important to keep the inertia as low as possible. It is recommended that the user will choose a beryllium mirror for frequencies of 8 kHz and above. This mirror provides high stiffness and low inertia.

Electro-Optical Products Corp. can supply the complete two axis resonant scanner-galvanometer (polygon) scanning system, or the resonant scanners with drive electronics needed for the customer to build the system.