RUBY 1k2 30FPS CLA

Introduction

The new RUBY X-ray Camera Lens Assemblies (CLA) deliver full digital

real-time 1k2 30 fps imaging in Image Intensifier based medical imaging

systems. RUBY will be available in two versions: suitable for 20 mm II

and for 25 mm II output window. RUBY is specifically designed to reduce

and eliminate costs in fluoroscopy C-arm systems compared to todays

existing CCD based solutions, without compromising image quality.

With RUBY you optimize the 5 elements of image quality in X-ray

imaging in your system: Resolution, Contrast, Dynamic imaging, Noise,

Artifacts. RUBY delivers 1k2 triggered global shutter imaging with optimal

sharpness, bad-pixel & spot free high contrast imaging for fluoroscopy

dose range imaging.

The RUBY CLA fits on any brand Image Intensifier with 20 or 25 mm

output window. The low weight, compact outline and low power operation

make it easy to install RUBY in existing mobile C-arm designs, with

re-use of the existing aesthetic covers. Adjustment provisions on RUBY

make it simple to position, align and fine focus the image, regardless of

the orientation of the C-arm.

REVISION 1.2

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RUBY is a Camera Lens Assembly (CLA) based on state of

the art CMOS image sensor technology. RUBY delivers full

digital real-time 1k2 30 fps for Image Intensifier based med-

ical X-Ray imaging systems. The optics-sensor combination

in RUBY is specifically engineered for maximum performance

at lowest cost and fits to Image Intensifiers with 20 or 25 mm

output diameter.

RUBY interfaces to the system via GigE, supporting low-cost

connectivity to off-the-shelf PC technology with long cable

lengths for video & command control. A signal I/O connector

provides latency free triggering (trigger input, strobe output)

and video based dose control signals to interface to X-Ray

generators (ABC; analog signal). RUBY is powered via a

separate connector (I/O). Power over Ethernet (PoE) is not

supported.

RUBY is a CLA without moving parts. Therefore, RUBY

realizes a much higher MTBF compared to CLA’s with moving

parts like motorized optical iris. RUBY utilizes the digital iris

concept (Adimec patent EP3110136, NL2015037) to adapt

the sensitivity of the CLA to the imaging needs in a clinical

procedure. Instead of setting an iris-position in conventional

CLA’s, RUBY only requires a gain setting (digital iris) via the

GigE interface.

Assembled View

Exploded View

Configuration Item Description

II mounting plate

The CLA-adaptor unit includes a mechanical plate that mounts the RUBY CLA to the Image Intensifier. Pending the selected Image Intensifier, a specific II mounting plate is needed. See section System integration for overview of supported II types by Adimec.

ND-filter set

The sensitivity of the optical path in RUBY is tuned to meet the maximum dose rate in the system by means of factory installed Neutral Density filters (NDF). RUBY supports the placement of 2 NDF in the CLA-adaptor unit. The effective filter is manually adjustable in the field (see exploded view). The light flux reduction of these filters in combination with the F2.8 intrinsic aperture of the CLA lens define the ‘dose-per-image at the Image Intensifier input screen’ at which the CLA image sensor starts to saturate (clips in white). See section System Integration for overview of NDF possibilities supported by Adimec.

Description

Configuration items

RUBY CLA consists of a CLA-camera and CLA-adaptor unit.

Both units are factory mounted by Adimec in clean-room

conditions. The assembled CLA is a field replaceable unit.

The CLA has two configuration items that need to be defined

to fit into a system environment. These configuration items will

be factory installed by Adimec.

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CLA Standard Configuration More info in section: Page

Resolution:1k2. Max frame rate: 30 fps. Optics 20 or 25 mm. Digital iris Performance 3

GigE Vision Video & Control Interface Video, Control & Power Interface 6

I/O and power interface Video, Control & Power Interface 6

Acquisition Functionality Functionality 4

Dose Control Functionality Dose and Brightness Control 5

Defect Pixel Correction Defect Pixel Correction 4

Installation & Field-service Functionality 4

Compliancy Compliance & Environmental 6

Outline drawings System Integration 7

CLA Configuration Items

Image Intensifier specific adaptor plate System Integration 8

NDF set System Integration 9

RUBY configuration overview

A full overview of RUBY CLA functionality and configuration items is shown in the following table. More detailed information can

be found on the next pages

Performance

II Output diameter fit 20 or 25 mm ± 1.5%

Image Resolution 1024 x 1024 pixels

Optical over-framing on sensor 0%

Output pixel bit depth 12 bit

Maximum frame speed 30 fps

Supported exposure time Minimum 40 µs; Maximum 1 second

Image pipeline latencyTime between end of integration at the sensor and the start of image

transmission on the GigE interface of the same image: < 2ms Condition: no AGC or feedback AGC mode

Sensitivity CLA – no NDF25 ± 4 DN12/Cd/m2 for P20 phosphor

Full scale video for P20 corresponds with 164 Cd/m2 Condition: minimum gain, 33 ms integration time, 0.3 nd-filter (50% transmission)

Dynamic Range Sensor73 dB Max (unity gain)

53.5 dB typical at max analog gain sensor (24 dB)

Aperture Optics Fixed F/2.8

MTF ≥ 45 % at Nyquist frequency at the image center

Digital iris gain range 0 .. 48 dB

Output window shapeCLA is optimized for an object plane located on inner surface of the II window

with 1.49 refraction index and 14.0mm thickness

Phosphor type, spectral sensitivity P20G, P43, P20

Weight ca. 980 gram incl. adaptor plate

Outline Measures For outline drawing see section System Integration

Power Dissipation< 6 Watt

power supply input is reverse voltage protected

MTBF > 120000 hours at 55°C [MIL-HDBK-217F]

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Functionality

Following functionality is standard available.

Function Description

Image Acquisition

• Free running (“Timed”) and external trigger (“TriggerWidth”) image acquisition mode • Programmable integration timing in free running mode • Programmable trigger polarity in external trigger mode • Black level user programmable • Horizontal and Vertical image flip • Programmable MTF smoothening (digital filter)

Sensitivity Setup • Digital iris gain control via command interface • Optical gain switch via NDF-sledge in CLA-adaptor (service/installation)

Dose & Brightness Control • Automatic Brightness Control signal (ABC); programmable • Automatic Gain Control (AGC); programmable • Video Measurement Field (MF); programmable

Defect Pixel Correction • Major single defects correction; Field-service adjustable

Installation/Service Support

• Alignment support overlay in live image (cross-hair) • Test images with grey scale patterns for fast fault finding and camera check • Nonvolatile storage of 5 user configuration sets • Visible LEDs for fast fault-finding (visible when no aesthetic cover is in place) • Embedded frame counter for debugging & fault finding • Elapsed time counter; readable via command interface • Built-In-Self-Test (BIST); status report via LEDs or command interface • Average Video Level (AVL) value in video measurement field readable via GigE Vision

interface; useful to support automated detector sensitivity calibration at system level • CLA firmware upload via GigE Vision supported

Defect Pixel Correction

Defect pixel correction in RUBY ensures a clean raw image is captured for optimal clinical image processing.

The replacement of defective or not well responding sensor pixels provides a cosmetically more attractive image to end user.

Defect Pixel Occurrence • Single defects and 2 adjacent defect pixels on a row • Adjacent defect pixels in a column are not accepted

Defect Pixel Correction

• Capacity of 1000 defect pixel corrections • User adjustable defect pixel map • In field factory blemish map restore supported • Defect pixel map can be made visible as overlay in the live image • Defect pixel correction can be turned on/off

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Dose and Brightness Control

Dose and Brightness control functionality in RUBY facilitates direct interfacing of RUBY with any X-Ray generator in the

X-Ray imaging system via the ABC signal output. Additionally, an automatic gain function (AGC) is available to correct the video

brightness level through a gain to the video signal within the CLA. Both functions use the measurement data from the Video

Measurement Field function.

Video Measuring Field (MF)

• Circular Measuring Field in video, image centered, with adjustable diameter between 10% and 100% of captured image. Programmable via command interface

• White Clip on/off user programmable. White Clip reduced impact of highlights in the video measurement.

• Shutter Correction Gain user programmable. Shutter Correction Gain compensates impact of the projection of lead-shutters in the video measurement.

Automatic Gain Control (AGC)

• AGC function applies an image brightness correction gain to the video image to compensate for over and under exposure conditions during active dose control or to enhance video brightness during ‘out of steam’ situations.

• AGC uses a digital gain applied to all pixels in the image. • Measurement for correction gain is based on an average value of grey levels within

the Video Measuring Field. • AGC is available as in-frame (feed-forward) and after-frame (feed-back) configuration.

In-frame AGC applies a correction gain to the image before it leaves the camera. After-frame AGC applies a correction gain calculated on image N to the next image N+1. In-frame AGC adds 1 frame latency in the output of the image by the CLA. After-frame AGC does not add latency.

• AGC gain range is user programmable. Max range between 0.5x and 8x. • AGC speed is user controllable. AGC speed is the extend in which a correction gain

is applied to the image. The speed parameter allows to tune the control perception for the clinical user.

• AGC dead range (e.g. no control) is user programmable. • Auto lock behavior is supported and user programmable. Auto lock supports image

subtraction acquisition with mask image capturing. • Manual lock can be selected to fix the AGC to gain value during an acquisition run. • AGC function can be selected on/off. When selected ‘off’ the AGC can be set

manually by the user to provide a fixed digital brightness gain to all images. • Black level setting is not affected by the AGC gain.

Automatic Brightness Control (ABC)

• ABC function provides an analog feedback signal on the CLA I/O connector for dose-control loop purposes.

• The ABC signal is based on measurements from the video measurement field. Typical useful in applications with frame rates above 10 fps.

• The ABC signal range is programmable between -15 Vdc and +15 Vdc. • The ABC regulation stabilization point is user programmable via the command

interface. (Linear Video Factor parameter). • ABC signal is updated on the I/O output within 2 ms after completion of readout of

the image sensor in the CLA.

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Video, Control & Power InterfacesRUBY CLA is equipped with a GigE Vision interface for video and control.

GigE Vision Interface

I/O Signal & Power Interface

Connector • RJ-45 Ethernet connection

Video output • According to GigE Vision standard

User Interface • GenICam interface according to the GigE Vision standard

Connector • Molex 5018761140

Synchronization interface

• 1 Input I/O for external triggering • Output I/O signals programmable as level signal (2 I/O’s)

or flash strobe signal (1 I/O) • Signals are galvanically separated via opto-couplers

ABC signal interface • Output signal 12 bit resolution DAC • Supported analog voltage range -15 Vdc .. +15Vdc

Power input • Full performance operational range: 10.8 .. 26.4 Vdc • max 300mV (17 – 700Hz) peak-to-peak ripple/noise

Compliance & Environmental

RoHS Compliancy

Directive • 2011/65/EU

IEC-60068 - Environmental test specification - operating

Temperature • +10°C to +55°C

Humidity (relative) • 20 % - 80 % RH, non-condensing

Shock • 10 g half sine shape, 11 ms duration

Vibration • 3 g sinusoidal vibration sweeps 5-150 Hz

IEC-60068 - Environmental test specification - storage

Temperature • -25°C to +70°C

Humidity (relative) • 5 % - 95 % RH. non-condensing

Shock • 25 g half sine shape, 6 ms duration

Vibration • 10 g sinusoidal vibration sweeps 5-150 Hz

Other

UL/CSA approbation • RUBY CLA is designed to meet the requirements for UL/CSA approbation testing. • CLA is NOT UL-certified by Adimec. UL certification is to be done on system level. Adimec will support

equipment manufacturers with information to perform UL approbation on system level.

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System Integration

Configuration Description

RUBY CLA configuration with 20 mm II is denoted as: RUBY-20-1024/G-y-n1n2-x.x

RUBY CLA configuration with 25 mm II is denoted as: RUBY-25-1024/G-y-n1n2-x.x

Where: y: II mounting plate type; n1n2: NDF set; x.x: issue number

Supported Image IntensifiersOverview of Image Intensifiers for which Adimec has information to provide a fitting mounting plate. The table below

identifies the ‘y’ parameter in the RUBY configuration code.

RUBY CLA-adaptor can be made compliant to types not listed in this table when information on the Image Intensifier

output section is made available. Please contact Adimec for support.

20mm

II Brand II Type Inch mounting plate type (‘y’)

Toshiba

E5830SD-P4A 9” 1

E5830SD-P6A 9” 1

E5830SD-P10A 9” 1

E5830SD-P11A 9” 1

E5796SD-P10A 12” 1

E5796SD-P11A 12” 1

Thales

TH 9439 HX 573 9” 1

TH 9438 HX H245VR13 9” 1

TH 9438 HXH245VR13C 9” 1

TH 9432 HXH803VR13 12” 1

Argus ATC 9896-010-50501 9” 1

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II Brand II Type Inch mounting plate type (‘y’)

Toshiba

E5764SD-P3/P3A 9” 1

E5764SD-P4/P4A 9” 1

E5764SD-P6/P6A 9” 1

E5764SD-P7 9” 1

E5804SD-P3/P3A 9” 1

E5804SD-P4/P4A 9” 1

E5804SD-P6/P6A 9” 1

Thales TH 9428 HP2 9” 1

25mm

Supported NDF Sets

Overview of neutral density filter sets available by default to configure the sensitivity range of RUBY.

In the RUBY configuration code the ‘n1n2’ parameter specifies the neutral density filters as follows:

‘n1’ : transmission coefficient of NDF-1

‘n2’ : transmission coefficient of NDF-2

The default supported values for ‘n1’ and ‘n2’ are listed in the table below (see indication ‘n’). The filter transmission

coefficient is listed in relation to the reference dose-per-image range (DPI in nGy/image) at the image intensifier input

screen (behind a anti-scatter grid). The indicated transmission coefficient is required to support the maximum DPI in the

depicted range. Note that the DPI range is assumed to be realised behind the patient and results in a video output level of

approximately 12.5% of max scale video, operating at the largest II-format.

Dose-Per-Image [nGy/im]

Filter Transmission

DPI range indication resulting in 12.5% signal output on CLA

‘n’

4 – 40 50%

4 – 66 32%

4 – 175 12%

Note: filter sets are based on usage of image intensifier at largest format (no II zoom)

Filter set ‘n1n2’ coding

Two NDF’s are supported in the RUBY CLA. These can be manually selected in the field (during field service). A combination of

2 filters is indicated as for example ‘5032’, meaning that ‘n1’=50% transmission and ‘n2’=32% transmission.

The code ‘5000’ for example indicates the presence of only 1 filter: ‘n1’=50%. In this case ‘n2’=100%, resembling no attenuation.

The following sets are supported of the shelf:

RUBY-20: 3250, 3212 and 0000

RUBY-25: 3250 and 3212

In case of the 0000 there is no filter present in the RUBY configuration.

Custom Filter

It is possible to equip the RUBY CLA with a custom filter set. Please contact Adimec for support.

Recommended Filter Set

Adimec recommends a 32% or 50% filter for RUBY CLA’s in systems using up to 5 kW X-Ray tubes.

Adimec recommends a 12% filter for RUBY CLA’s in systems using 10-15 kW X-Ray tubes.

Application Tip - Using NDF filters to compensate loss in Gx

The 2-NDF feature of RUBY can be used to compensate for the loss in Gx of the Image Intensifier over

time. For example: select ‘n2’ to have a transmission factor equal to ‘n1’/0.8 to restore the original optical

sensitivity to the sensor when the Gx has reached 80% of its initial value. In the field this can be realised by

mechanically switching the filter in the RUBY CLA adaptor during field service.

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Outline Drawings RUBY-20

Depicted are the outline drawings for a RUBY-20-1024/G-1-n1n2-x.x with 5.5 mm II output window.*

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* Image shows 5.5 mm II output window. In the market also 3.6 mm and 7 mm are available.

*

Outline Drawings RUBY-25

Depicted are the outline drawings for a RUBY-25-1024/G-1-n1n2-x.x

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For maximum image quality, performance, and reliability in demanding applications - Choose Adimec

Custom camerasAdimec has the ability to offer additional camera functionality and create customer specific cameras even for small volume programs. Built from platforms, our standard line of cameras give us a flexible base that can be tailored to fit your specifications. Contact us to discuss these options in more detail. Visit: www.adimec.com for product details.

AdimecAdimec is the leading supplier of high‑end cameras for machine vision, medical and outdoor imaging applications. Our Adimec True Accurate Imaging® technology forms the foundation for a broad range of camera products, and brings new levels of precision and accuracy to vision systems.

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Datasheet CLA RUBY Rev. 1.2 - Detailed information on request - Subject to change without notice - Actual products may differ from photos

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