Electrically focus tunable lens EL-10-30
Contents
1. 0 3 Typ a Pitch 0 5 Typ 3 500 AuUAWN STEMMER WWW STEMMER IMAGING COM IMAGING Operating instructions EL 10 30 Series Electrically focus tunable lens Document number 131 198 00 Date 21 03 2014 O ptot u nN e Copyright 2014 Optotune shaping the future of optics EL 10 30 Ci industrial version For the industrial version EL 10 30 Ci the connection with the 6 pin Hirose connector is straight forward Pinning Function SE97B Pins 1 5 SE97B SDA SE97B Power a Lens pole eo Lens pole Operating the lens with a standard power supply Several standard power supplies can be used as a current source The internal resistance of the lens is of 12 5 Ohm at room temperature Following Ohm s law U R x I 400 mA can be driven through the lens with a 5 V supply voltage This maximal value should not be exceeded The recommended handling procedure of the lens is as follows 1 Set the supply voltage to 5 V Switch over to current control Connect the lens Adjust the driving current with current control knob a i Switch between voltage and current control ua T TRIPLE POWER sup v ON AF Hare Current Control PUSH LO Voltage control Figure 1 Use of a standard power supply to drive the EL 10 30 Left Voltage display in volts Right Current display in milliamps The power consumption of the lens derived from P R x I is of 2 Watts2. this document
3. 3 Take out the cover glass offset lens with the retainer ring Prepare the new cover glass or lens 4 Turn the lens again but be careful that no dust gets inside Carefully drop the new cover glass or lens planar side should usually look down towards the lens inside using tweezers Put the retainer ring in by hand 6 Tighten the retainer ring with a screw driver Be careful not to scratch the glass IMPORTANT At the end do not exert much torque lt 1 Nm as this might damage the tunable lens STEMMER WWW STEMMER IMAGING COM IMAGING Operating instructions EL 10 30 Series Electrically focus tunable lens Document number 131 198 00 Date 21 03 2014 Copyright 2014 Optotune WWW STEMMER IMAGING COM optotune shaping the future of optics g N p j e gt STEMMER IMAGING Operating instructions EL 10 30 Series Electrically focus tunable lens Document number 131 198 00 Date 21 03 2014 O ptot u nN 6 Copyright 2014 Optotune shaping the future of optics Trouble shooting The lens does not work focal point does not move at all 1 Check if pins 2 and 3 for EL 10 30 C or cables for EL 10 30 are correctly connected note that the cable of the EL 10 30 is only conductive at the cable tips which are covered in solder Try switching the polarization connect cables pins the other way round Check if current is flowing using an ammeter or the current display of the power sourc
4. Operating instructions EL 10 30 Series Electrically focus tunable lens Document number 131 198 00 Date 21 03 2014 O ptot u n 9 Copyright 2014 Optotune shaping the future of optics a Electrically focus tunable lens EL 10 30 Series Operating instructions Safety warnings Read these operating instructions carefully before using the product It will help you operate the product optimally increase its lifetime and avoid problems and damage e Follow all safety instructions including the instructions of any attached equipment e No safety switch Not adhering to the maximal electrical values can lead to malfunctions or even damage the lens e Fire hazard The lens can become very hot if operated at high currents e Danger of leakage A non toxic fluid may leak if the lens is damaged e This product is to be operated by qualified personnel only These operating instructions are part of the product and are to be within reach at all times Should the product be re sold or passed on to a third party then these instructions must be passed on together with the product STEMMER WWW STEMMER IMAGING COM IMAGING Operating instructions EL 10 30 Series Electrically focus tunable lens Document number 131 198 00 Date 21 03 2014 O ptot u nN Copyright 2014 Optotune shaping the future of optics Technical data Operating voltage 0 5 VDC Internal resistance at room temperature 12 5 Ohm Operating current typica
5. at maximum This consumption is dis sipated in heat The lens may become very hot if it is operated over a long period of time with more than 1 1 Watt power consumption 300 mA in terms of current Attention Using a current over 400 mA for several minutes may thermally damage the lens STEMMER WWW STEMMER IMAGING COM IMAGING Operating instructions EL 10 30 Series Electrically focus tunable lens Document number 131 198 00 Date 21 03 2014 O ptot u nN e Copyright 2014 Optotune shaping the future of optics Recommended drivers power supplies Optotune provides its own high precision USB driver g3 F apiotune uens ORVER 4 A with a resolution of 0 1mA It includes the 12C readout E of the temperature sensor which can be used for tem perature compensation There are also many alternative off the shelf products available that can be used to control the EL 10 30 e Precision constant current driver for laser diodes with external control via 0 5V analog signal e g Ed mund Optics NT56 804 or NT84 355 e For high precision applications 0 1mA resolution with manual control TTi QL355 e For high precision applications 0 1mA resolution with USB RS232 computer control TTi QL355P e For low precision applications 1mA resolution with manual control TTi EL301R e For low precision applications 1mA resolution with USB computer control Quakko HY3005DP http shop vendio com Evan2002 item 2041700966 s 1282809362 Operat
6. e Check the impedance of the lens which should be 12 5 Ohm at room temperature If you cannot measure the right impedance or any current flowing at all then an internal connection is damaged and the lens must be replaced oe oe The focal point moves but not as expected 1 Try switching the polarization 2 Measure the focal length and the current that flows through the lens with an ammeter at different levels The back focal distance measured from the back side of the lens housing should follow a curve similar to the one depicted in Figure 3 3 The focal length should decrease monotonously with increasing current If this is not the case then there is an issue with the electro magnetic motor and the lens must be replaced 220 210 200 190 EL 10 30 LD material 180 4 170 160 150 140 130 120 4 110 4 100 4 90 80 70 60 50 40 20 20 4 10 4 O _ 0 25 50 75 100 125 150 175 200 225 250 275 300 Current mA EL 10 30 C with LD liquid EL 10 30 HR material Back focal length mm Figure 3 Typical relation of focal length to current of different EL 10 30 configurations Imaging is our passion STEMMER IMAGING Head Office R Sing P Gutenbergstra e 9 13 D 82178 Puchheim S T E MI IVI E www stemmer imaging com Phone 49 89 80902 0 info stemmer imaging de IMAGING O OPTU4 06 2015 Subject to technical change without notice No liability is accepted for errors which may be contained in
7. ing the lens with custom electronics Dedicated control electronics can be designed e g by using pulse width modulation PWM The frequency in this case should be set between 20 kHz and 50 kHz Another very useful component is the ADN8810 program mable precision current source of Analog Devices which features 12 bits of resolution and can be controlled with an SPI interface If the lens is operated with custom built or non certified electronics Optotune cannot guarantee the correct functioning of the lens and is not liable for any consequences of its use Mounting possibilities The EL 10 30 C is compatible with C Mount lens fixtures Alternative mounting options include 0 fn G024503000 LINOS G061042000 LINOS KM200V M Thorlabs NT03 676 Edmund Optics www aqdioptig http www dioptiaq http www thorlabs de http www edmundoptics com shop com shop com Exchanging the offset lens in the EL 10 30 C The EL 10 30 C is shipped with a planar cover glass or with an integrated offset lens MV version which is held in place by a retainer ring The cover glass or offset lens can easily be exchanged by hand following the proce dure outlined below Please note that this is preferably done in a clean room or under a flow hood to avoid dust entering the tunable lens 1 Loosen the retainer ring carefully with a small screw driver 2 After about 5 rotations turn the lens with the ring pointing down so no dust can get into the lens
8. l 0 300 mA Absolute maximum current 400 mA Maximal recommended power input 1 1 W 300 mA in continuous operation 2 0 W 400 mA short term lt 1 minute Inductance of the motor 10 Hz 3 5 mH 1 kHz 0 8 mH 50 Hz 2 9 mH 10 kHz 0 6 mH 100 Hz 2 5 mH 100 kHz 0 4 mH Connecting the lens All EL 10 30 Series lenses have an electro magnetic motor which is driven by current The lens will only work with the correct polarity of the current False polarity will not damage the lens EL 10 30 compact version The EL 10 30 has a simple copper cable connection The correct polarity is shown in Figure 1 PN Copper cable Figure 1 Connection of the EL 10 30 The colored cable is the positive terminal and the copper cable is the negative terminal EL 10 30 C C mount version The EL 10 30 C has an FPC connection compatible with Molex 0 5mm pitch 6 way FPC backflip connector P N 503480 0600 An adaptor board with integrated connector is included for easy soldering The connector on the adaptor board has top and bottom contacts so it is important that once orientation is established it must be maintained The EL 10 30 C also features an integrated NXP SE97B temperature sensor with 256 bytes of memory the sensor is addressable via the pins as detailed below I2C address is O0011000RW esto o a femsa 5 s femsa o e orowe 8 Figure 2 Connection of the EL 10 30 C Orientation looking at exposed Cu tracks Track Width
Download Pdf Manuals
Related Search