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Table of Contents
Summary of Contents for Opus OSIRIS
- Page 1 OSIRIS Infrared Imaging System USER MANUAL Opus Instruments Ltd...
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Page 2: Table Of Contents
CONTENTS Page Declaration of Conformity Your camera Unpacking and Assembly Software Installation User Interface Calibrating the camera Lighting The lens F/number Initial Setup Taking a Picture Reference appendices Cover—The Magdalen NG719 by kind permission of The National Gallery London... -
Page 3: Declaration Of Conformity
For customers in the USA Declaration of Conformity OSIRIS –A1 Model Number Trade name Opus Instruments Limited Beacon House Address Nuffield Road Cambridge UK CB4 1TF Tested to comply with FCC standards FOR OFFICE USE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: This device may not cause harmful interference. -
Page 4: Your Camera
YOUR CAMERA Camera body Focussing attachment Lens (filter not shown) USB port Power inlet Power switch Coarse focus lock Fine focus adjustment Focus scale... -
Page 5: Unpacking And Assembly
UNPACKING and ASSEMBLY Your camera case holds the following parts; Camera body Lens and focussing attachment Power supply USB lead Instruction manual ASSEMBLY Lay the camera on its back and insert the 2 rails of the focus attachment into the two holes in the front of the camera ensuring that the rods push fully home and the scales are away from the camera and facing up. -
Page 6: Software Installation
SOFTWARE INSTALLATION INTRODUCTION The software application files are supplied on CD rom compressed into a single self-installing executable SETUP.EXE. Run this as described below to install the application files. INSTALLATION OF THE APPLICATION SOFTWARE To install the software and drivers, follow the steps below: Place the CD ROM in your CD drive From the system Start menu, select Run Click on the Browse button of the dialog box that opens... - Page 7 INSTALLATION OF THE DRIVER The Osiris USB driver must be installed on the PC in order for the PC to be able to communicate with the camera. The driver osiris.sys is located in the root directory of the CD.
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Page 8: User Interface
THE USER INTERFACE STARTING UP When you start the programme the window below will appear. If the camera is not connected or switched on then you will receive the message USB interface to camera not found. Check the camera is switched on and the USB connected and then click INITIALISE on the CAMERA menu If this fails then exit the programme and check the connections and then restart the programme. - Page 9 THE IMAGE AREA Your Osiris camera has its scan area divided up into 64 squares or tiles as shown below – each tile is 512 x 512 pixels. Osiris always scans a rectangle which is a whole number of...
- Page 10 THE USER INTERFACE SELECTING AN AREA OF INTEREST Move the mouse to a point on the image area. Press and hold the SHIFT key whilst clicking with your left mouse button. The camera will move to that position and scan the new area.
- Page 11 THE USER INTERFACE When you press CAPTURE the camera will scan the area defined by your rectangle remembering that it will scan a whole number of tiles. As the camera scans the image will be displayed. At any time you may pause the capture by pressing PAUSE/CANCEL on the screen.
- Page 12 THE USER INTERFACE Your OSIRIS camera is designed to work with Halogen lighting. If your lighting is powered directly from the mains then the lamps will flicker very slightly at twice the mains frequency. Though this is not visible to our eyes the camera will see this flicker and vertical stripes will appear on the image.
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Page 13: Calibrating The Camera
CALIBRATING THE CAMERA The sensor in OSIRIS has been calibrated at the factory to allow for variations in the both the black level signal (Dark current correction) and the white level gain (Shading correction). - Page 14 THE USER INTERFACE If your normal mains frequency is 50Hz then the calibrations will have been carried out and stored for 10 msec at low gain and 1msec at high gain. If your normal mains frequency is 60Hz then the calibrations will have been carried out and stored for 8.33 msec at low gain and 0.83msec at high gain.
- Page 15 THE USER INTERFACE In normal use the camera will not need to be calibrated after your initial setup. However over time the detector characteristics may change slightly. If your image has faint horizontal stripes then the camera may need re-calibrating.
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Page 16: Lighting
10 milliseconds. This fluctuation will appear on the image as vertical stripes if it is not corrected. OSIRIS can remove this effect by having the time the detector is integrating the light the same as light fluctuation period. - Page 17 LIGHTING For most purposes two sources have been found to provide satisfactory illumination. Typical Illumination Geometry With 2 sources the optimum geometry is as in the diagram below. Though the distances Z and X are not critical it is best to have X as large as possible within the constraints of the angle of light from the source.
- Page 18 LIGHTING What level of illumination? Other sections explain the adjustments that can be made to the exposure time and the lens F/number and the effects that will have on the image. For the best quality images with the camera operating at an F/8 you will need about 250 LUX object illumination with Tungsten Halogen lamps.
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Page 19: The Lens F/Number
THE LENS F/NUMBER Varying the lens F/number The lens F/number is set by rotating the ring on the lens. Your lens has an F/number that can vary from 5.6 to 45 in steps. Varying the lens F/number has 3 effects. The larger the F/number the greater the depth of field at the object. -
Page 20: Initial Setup
INITIAL SETUP Camera—Object Distance Using the graph in the appendix select the camera object distance for the size of your object. Remember the camera has a square image format so take the largest object dimension. ALL MEASUREMENTS SHOULD BE TAKEN FROM THE CENTRE OF THE OBJECT TO THE FRONT OF THE CAMERA CASE Set the nominal focus... -
Page 21: Taking A Picture
TAKING A PICTURE Set the lighting Setup the lighting to provide approximately 250 LUX if using Tungsten Halogen sources and operating at F/8. Check the Lighting Level Select a position on the image (move mouse pointer on screen and press SHIFT and the LEFT MOUSE BUTTON). Hover the mouse pointer over the captured area, at the bottom left of your screen the intensity is displayed. - Page 22 TAKING A PICTURE EXAMPLE 1 You have an object 1200 x 1600mm which has a total depth of 400mm. How do we set up the camera. The largest dimension is 1600mm so looking at the Field of View graph we note that we must set the camera at least 2750mm away from the object.
- Page 23 TAKING A PICTURE EXAMPLE 2 You have an object 600 x 400mm which has a total depth of only a few mm. How do we set up the camera. The largest dimension is 600mm so looking at the Field of View graph we note that we must set the camera at least 1250mm away from the object.
- Page 28 +44 (0) 1603 740397 E-mail hello@opusinstruments.com www.opusinstruments.com Opus Instruments Limited...
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