camera system technical specification - … system tech spec.pdf · description the camera system...

Description

The camera system fitted to DEK printing machines consist of custom assemblies of optics,

advanced lighting and CMOS sensor technology.

Function

The camera system provides fiducial finding for substrate and mask alignment. Advanced and

Basic 2Di inspection, and HawkEye 750 and 1700 verification.

Capability

TECHNICAL SPECIFICATIONCAMERA SYSTEM

. . . know the difference


Issue 3 Feb 09

Camera Types

Five camera variants are available (depending upon machine configuration):

The DEK Gold and HawkEye 1700 camera systems provide the largest field of view.

For 2D inspection the inspection window provided is three times larger than the inspection

windows provided with the Green and Graphite cameras. This speeds up 2D inspection times.

The Graphite camera is DEK’s entry-level system, it retains the same field of view as the Green

camera but has reduced software lighting control; two channel control as opposed to the four

channel control of the other cameras in the range.

Each of the DEK camera systems use special optical designs to maximize their capability.

All systems capture the board and stencil images simultaneously in order to minimize any relative

movement between the two targets. All assemblies also benefit from Telecentric lens technology

and custom LED lighting to permit reliable and accurate capture of images across a wide spectrum

of materials and target finishes.

HawkEye 1700;

HawkEye 750; Gold; Green and Graphite.

Part No. 191539

Fiducial finding is (minimum 0.1mm [circles and square fiducials]) and from 0.5mm up to 3mm

fiducials - all other fiducial types; anywhere on the substrate up to 620mm x 508mm.

2Di inspection is capable of reporting Smear, Blockage, Paste on Pad, Bridging, Alignment

and Volume, depending on the inspection type.

HawkEye 750 and 1700 give verification of Paste on Pad.

Lighting

DEK's camera systems have revised lighting geometries which provide a hemisphere of light fromfour channels - two stencil and two board (direct/vertical and indirect/oblique illumination.)This gives much improved diffused lighting through an outer ring of diffused LED’d andinternal direct lighting. This greatly reduces the unwanted shadowing, caused by the ‘HASL’ effect.This was developed for a robust fiducial finding and inspection capable system.

Therefore for high accuracy and reliable image processing, especially in applications with difficultpad finishes as described previously DEK has incorporated a flat lighting design within the cameraassembly. This is achieved by utilizing two light sources:

.

.

Direct Lighting/Vertical

Indirect/Oblique Lighting

2 channel control (Graphite camera) controls both direct and indirect light sources together

4 channel control (all other cameras) provides independant control of each light source

Part No. 191539


Direct Lighting

A bank of LED's shining through a diffuser to produce a very uniform light source achievesdirect lighting. In addition to this the light is passed through a cube beam splitter, which increasesthe illumination and the range of angles reaching the board.

Indirect Lighting / Oblique Lighting

Indirect / Oblique lighting is used in addition to direct lighting to create uniform illumination,eliminating hot spots of light.

An array of LED's sited in a ring around the lens aperture,.

produces a very balanced illuminationwhich is radiated in all directions onto the board

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Fiducials

Camera Related Software Options

DEK's range of automatic mass imaging products uses the vision system to capture and processalignment marks or fiducials.

DEK's range of camera related software suites include; 2D inspection and HawkEye 750/1700deposit verification applications

For further information on fiducials visit www.dek.com and navigate to the following:http://www.dek.com/csgweb/techinfo.nsf/csg/CEDFD02CA019CBE6802572E50030FE77/$file/Fiducial_Limits&Best_Practice.pdf

For further information on DEK’s software visit www.dek.com and navigate to the following

A Technical Guide to 2 Dimensional Inspection p/n 178403andHawkEye - a guide to deposit verification p/n 195152

\\Support\Manuals\Technical Publications\Option Manuals\

Part No. 191539


750/1700

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Part No. 191539

GraphiteIEEE1394

CameraType

HawkEye 2D Inspection

Basic Advanced

Capability

11.3 x 8.7(split

betweenviews)

11.3 x 8.7(split

betweenviews)

11.3 x 8.7(split

betweenviews)

Software controlled2 channel

Red LED lighting


Red LED lighting

Software controlledmulti channel

Red LED lighting(optimised for highspeed aquisition)

Software controlledmulti channel

Red LED lighting(optimised for highspeed aquisition)


Red LED lighting

2

2

11.3 x 8.7(per view)

11.3 x 8.7(per view)

CameraTechnology

2 x CMOSDigital

detectors withIEEE1394a

interface

2 x CMOSDigital


interface

2 x CMOSDigital


interface

2 x CMOSDigital


interface

2 x CMOSDigital


interface

Field of ViewFOV

26mm2

26mm2

75mm

26mm2

75mm

InspectionWindow

752 x 582mm(split between

views in ‘X’direction)





752 x 582mm(per view)

752 x 582mm(per view)

Resolution

Nominal15 microns(per pixel)





Pixel Size

Individual Opticalpaths to dedicatedCMOS detector for

looking upand down


looking upand down


looking upand down


looking upand down


looking upand down

OpticalConfiguration

Lighting

GreenIEEE1394

GoldIEEE1394

HawkEye750IEEE1394

HawkEye1700IEEE1394

750 1700

Issue 3 Feb 09

camera system technical specification - … system tech spec.pdf · description the camera system...

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