1024LDH2 Linescan Camera

The high-speed SUI 1024-LDH2 InGaAs camera enables spectral-domain optical coherence tomography (SD-OCT) at 1.04 μm wavelength, allowing rapid capture of detailed 3-D volumes of the retina, nerve head and choroid layer. For 1.31 μm wavelength SD-OCT, the camera supports diode-array based systems, ensuring superior phase stability for Doppler or polarization-sensitive OCT (PS-OCT) applications.

The camera features 12-bit digital capture via base-format Camera Link® interface cards, offering a maximum dynamic range exceeding 2300:1 at high line rates. Two pixels are available: 500-μm tall pixels for alignment in SD-OCT setups and 25-μm square pixels for ultra-fast machine vision (MV) or dual-camera PS-OCT configurations.

This versatility makes the LDH2 suitable for a range of high-resolution imaging tasks in medical diagnostics and industrial applications.

• 91,911 lps for 1024 pixels at 12 bits
• Integrate-while-read snapshot acquisition
• Wavelength response over 0.8 μm to 1.7 μm with flat QE for 1.05 and 1.31 μm OCT
• 25 μm pixel pitch with aperture heights of 25 μm (defined by on-chip mask) or 500 μm
• 12-bit base Camera Link® compatible output and control
• High quantum efficiency and dynamic range
• Operating temperature range of -10 to +50°C
• Mounts easily to spectrometers due to 5.7 mm image plane depth and O-ring light seal
• Mounts easily to optics benches or MV systems with tripod, front or side fastener hole patterns
• Optional adapters for F-mount or C-mount, lenses (C-mount lenses may not fully illuminate the full width of the 25.6 mm wide arrays)

• Mechanical
• Dimensions

  6.1 cm x 7.37 cm x 7.62 cm
  2.4 in x 2.9 in x 3.00 in
  Length excludes I/O connectors, and lens adapter

• Weight

  < 450 g or 1 lbs (no lens or adapter)

• Lens Mount

  M42x1-6H with 5.7 mm to image plane (std)
  Fixed distance C-Mount adapter (opt)
  Adjustable distance F-Mount adapter (opt)

• Spectrometer Mount

  4 tapped 8-32 holes in 2 inch square pattern
  4 tapped M4x0.7-6H holes spaced 5 cm x 4 cm (h x w)
  O-Ring light seal, 1.9 inch diameter, 1/16th thickness

• Camera Tripod Mount

  2 tapped ¼-20 holes alternating on ¾” (19 .05 mm)
  spacing with 2 tapped M6-6H holes

• Side Wall Mounts

  4 tapped M4x0.7-6H holes, 5 x 4.5 cm spacing (h x d)

• Environmental & Power
• Operating Case Temperature

  -10 to +50°C

• Storage Temperature

  -20°C to 70°C

• Humidity

  Non-condensing

• Power Requirements

  AC Adapter: 100-240 VAC, 47-63 Hz, < 1.0 A
  DC voltage/power 7-16 V, < 6 W at 25°C, <9 W at 50°C
  In-rush current< 1.5 A peak

• Interfaces
• Control

  SDR 26-pin connector (Base Camera Link®)

• Image Data

  SDR 26-pin connector (Base Camera Link®)

• Power

  Hirose HR10-7R-6PA receptacle
  Mates with HR10-7P-6S or SN4-8-6 (P)

• Sync Output

  SMA: 5 V, 50 Ω series terminated, active high: integration active

• Trigger: Input

  SMA, Low < 0.5, 3 V > high < 5 V

• Status LED

  Green: TEC locked at setpoint
  Red: TEC unlocked
  Blinking: Timing or triggering error

• Regulatory Compliance
• CE

  Meets class A level for emission, immunity & ESD standards

• FCC

  Meets requirements for Part 15, Subpart B, Class A, 2006

• Electro-Optical Performance
• Sensor Format ¹

  1024 pixels on 25 μm pitch with 8 readout ADCs

• Optical Aperture (pixel height) 1

  500 μm or 25 μm (square pixel sharply defined by mask on detector surface)

• Peak Quantum Efficiency ¹

  > 70%

• Gain Capacitor Setting

  0.1 pF

  1.0 pF

  10.0 pF

  	Typical	Specification	Typical	Specification	Typical	Specification
  Net full well capacity (Me-) 2	2	>1.4	8.7	>7.7	85	>70
  Gain (e-/cnt) 1,3	540	<620	2200	<2450	21400	<24500
  Temporal noise (rms counts) 1,2	2	<2.4	1.6	<1.8	1.3	<1.4
  Dynamic range 1,2,4	1900:1	>1350:1	2600:1	>2100:1	3100:1	>2600:1
  Differential non-linearity 1,2	+/- 0.8%	< +/- 1.2%	+/- 0.8%	< +/- 1.2%	+/- 0.8%	< +/- 1.5%

• Bad Pixel Specification

  White, dark, noisy or pixels exceeding +/- 10 of the mean value when illuminated at 50% of full well
  Number of bad pixels limited to a maximum of 1% of array total; no bad neighbors within 5 pixels

• Exposure Time ^1,3

  .007 ms to 1 ms in preset modes or to > 1 s with user programmed or via the width of the ext. trigger

• Trigger Modes ³

  Free run, single line per trigger , variable exposure , or gated burst

• Sync Output

  SMA connector: digital signal, high during integration

• External Trigger ³

  Three modes via CC1 or SMA

• External Variable ET

  User set by the duration of trigger input signal (minimum ET pulse: 10 μs)

• External Trigger Jitter

  +/-1 clock cycle: nominally 80 ns with internal ET

• Pixel Rate

  100 Mpix/s max with 2 x 12-bit words transferred on each Camera Link strobe clock at 50 MHz

• Digital Output Format

  12-bit base Camera Link®; recommend NI PCIe-1427 or equivalent frame grabber

• Readout Mode

  Integrate while read, differential double sampling

• Corrections (preset OPRs)

  Factory calibrated gain, offset, and bad pixel replace, applicable to the center 90% of the array

• Resolution

  1024 x 1

• Pixel Pitch

  25 μm

• Line Rate

  91,911 lps

• Spectral Response

  0.8 to 1.7 μm

• ¹Actual formats and performance governed by user-selected SUI linear array purchased with camera (dark current may limit longest usable ET)
  ²Camera readout noise limited for low and medium gain settings; dark shot noise limited for high gain settings
  ³User selectable by command over Camera Link® serial lines
  ⁴Dynamic range limited to maximum values listed when camera operated at exposure times shorter than 28 μs due to reduced full well capacity

• Ordering Information

• Camera Model1	Part number	Max. Line rate1	Pitch	Pixels	FPA length	Aperture (height)
  SU1024-LDH2-1.7RT-0500/LC	8000-0480	91,911 lps	25 μm	1024	25.6 mm	500 μm
  SU1024-LDH2-1.7RT-0025/LC	8000-0484	91,911 lps	25 μm	1024	25.6 mm	25 μm

   

• ¹Cameras include the photodiode array, whose characteristics dominate camera performance; see the array datasheet for more information
  ²Accessory Kits: Include power supply, carrying case, SMA-BNC trigger in and sync out cables, o-ring, carrying case, mini-CD with manual and free SUI Image. Analysis software for National Instruments Camera Link frame grabbers.    
  ³Part Numbers: Kit with F-mount adapter: 8000-0528. Kit with C-mount: 8000-0530. Kit without lens adapter: 8000-0529    

• Spectral-Domain Optical Coherence Tomography (OCT)
• Ultra-fast absorption or emission spectroscopy for combustion research, moisture, lipids, proteins or other molecular vibration bands in the 0.8 to 1.7 μm range
• Machine vision for ultra-high speed inspection, materials classification, sorting and/ or monitoring of continuous processes, for example for food or agricultural product sorting