ITR3CMOS21000KPA Low Light Imaging/Semiconductor Cooled Camera

Product Introduction

21MP color cooled camera (IMX269, 4/3") with 3.3 µm pixels. USB3.0 interface supports multi-resolution/frame rate modes (up to 192 fps windowed). Dual-stage TEC cooling and anti-fogging structure, suitable for color low-light microscopy, imaging measurement and online inspection.

Key Features

Sensor: Sony IMX269 (color, rolling shutter) 21MP
Pixel/format: 3.3 µm; 4/3" (21.63 mm diagonal)
Frame rate: 17 fps@full resolution; windowed up to 192 fps
Interface: USB3.0; 8/12-bit output
Dynamic range: 72 dB

Dual-stage TEC deep cooling (typical ΔT≈40 °C), closed-loop temperature control, anti-fogging
Supports long exposure (typically up to 3600 s, model dependent)
Optically isolated trigger/strobe + programmable GPIO
Image functions: ROI, digital binning, mirroring, Gamma/LUT (model dependent)
Software/SDK: ToupView and cross-platform SDK

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Product Details

Key Parameters
Model	ITR3CMOS21000KPA
Sensor	Sony IMX269AQR
Effective Pixels / Resolution	21MP (5280×3954)
Frame Rate (Full Resolution and Key Resolution Modes)	17 fps@5280×3954; 17 fps@3952×3952; 56 fps@2640×1976; 67 fps@1760×1316; 192 fps@584×438
Shutter Type	Rolling Shutter
Color Type	Color
Imaging Performance
Pixel Size	3.3 µm × 3.3 µm
Sensor Size	17.4 mm × 13.1 mm
Diagonal	4/3" (21.78 mm)
Dynamic Range	72 dB
Bit Depth	8-bit/12-bit
Sensitivity	400 mV
Interface & Mechanical
Data Interface	USB3.0
GPIO	1x optically isolated input, 1x optically isolated output, 2x non-isolated I/O ports
Lens Mount	C-mount
Dimensions	80 mm × 80 mm × 101.5 mm
Weight	860 g
Power Supply	USB3.0 interface power/DC12V power
Environment & Certification
Operating Temperature / Humidity	-10 °C ~ +50 °C / 20%-80% non-condensing
Storage Temperature / Humidity	-30 °C ~ +70 °C / TBD
OS Support	Windows/Linux/macOS/Android multi-platform SDK (native C/C++, C#/VB.NET, Python, Java, DirectShow, TWAIN, etc.)
Certification	CE/FCC

Product Overview

ITR3CMOS21000KPA is a scientific-grade cooled camera designed for low-light imaging and long exposure applications. It features the high-performance Sony IMX269AQR image sensor with the following characteristics:

High Sensitivity Imaging: 21MP (5280×3954) resolution with 3.3 µm × 3.3 µm pixel size and 17.4 mm × 13.1 mm sensor size, ensuring effective capture of weak signals.

Deep Cooling Technology: Dual-stage semiconductor deep cooling, 42 °C below ambient temperature , effectively reducing dark current and thermal noise with typical dark current of 0.07 mV @ -20 °C .

Ultra-Long Exposure Time: Maximum exposure time up to 1 hour , supporting long integration imaging for extremely weak signal detection.

Anti-Condensation Design: Features sealed chamber and anti-condensation window design to ensure no moisture formation on sensor surface during low-temperature operation, maintaining stable image quality.

Precise Temperature Control: Adjustable cooling temperature allows users to balance low noise with quantum efficiency according to requirements, optimizing imaging performance.

High-Speed Data Transmission: Utilizes USB3.0 interface with hardware buffer to ensure smooth and stable transmission of large data volumes.

High Bit Depth Output: Supports 8-bit/12-bit bit depth output with 72 dB dynamic range, preserving more image details.

Dual Power Supply Design: USB3.0 interface power/DC12V power ensures stable operation of the cooling system.

Core Performance Indicators

Cooling Capability

42 °C below ambient temperature

Maximum Exposure Time

Up to 1 hour

Typical Dark Current

0.07 mV @ -20 °C

Resolution

21MP (5280×3954)

Scientific Application Features

Astronomical Observation

Ultra-low noise and long exposure capability suitable for capturing dim targets such as deep-sky objects, comets, and nebulae.

Spectral Analysis

High dynamic range and linear response for precise spectral information recording, suitable for Raman spectroscopy and fluorescence spectroscopy applications.

Bioluminescence Imaging

Extremely high sensitivity for capturing weak signals from bioluminescence and chemiluminescence, supporting in vivo imaging research.

Long-Term Monitoring

Stable cooling system and anti-condensation design support long-term unattended scientific observation.

Recommendation

The ITR3CMOS21000KPA cooled camera, with its exceptional low-light detection capability, ultra-long exposure time, and scientific-grade image quality, is the ideal choice for astronomical observation, spectral analysis, bioluminescence imaging, and other low-light applications. Deep cooling technology effectively suppresses noise, while anti-condensation design ensures long-term stable operation, providing reliable imaging solutions for scientific research.

ITR3CMOS21000KPA Product Manual

PDF format with detailed technical specifications and dimensional drawings

Download

SDK Development Kit

Supports Windows, Linux, macOS and other platforms

Get SDK

3D Model Files

STEP format for mechanical design integration

Download 3D

Packing List #

Current model ITR3CMOS21000KPA packing list (USB3 Deep-Cooled)

Standard packing list

Carton: L: 50 cm W: 30 cm H: 30 cm (20 pcs, 12–17 kg/carton)
3-A instrument safety case: L: 28 cm W: 23.0 cm H: 15.5 cm (1 pc, 2.8 kg/box); outer carton: L: 28.2 cm W: 25.2 cm H: 16.7 cm
ITR3CMOS series camera (USB3)
Power adapter: input AC 100–240 V 50/60 Hz; output DC 12 V 3 A
High-speed USB3.0 A-B cable (1.5 m)
I/O cable
Disc/storage media (drivers & software)

Refer to the in-box checklist for power and cables; use original accessories. Deep-cooled models require anti-condensation precautions.

USB3 deep-cooled packing list

Product Dimensions #

Current model ITR3CMOS21000KPA dimension drawing (USB3 interface (general))

USB3 · USB3 interface (general)

Deep cooling Dimension drawing

The ITR3CMOS series is TopLite's high-performance deep-cooled USB3.0 CMOS line, built on Sony backside-illuminated CMOS sensors with dual-stage TEC and low-noise electronics for long exposures, high sensitivity, and research-grade imaging. It delivers high quantum efficiency (QE), ultra-low dark current, and wide dynamic range for astronomy, spectroscopy, and scientific imaging.

Key features

Two-stage TEC cooling

35–45 °C below ambient, ultra-low dark current

Back-illuminated CMOS

Sony sensors with high quantum efficiency

Ultra-low noise

Read noise down to 1 e⁻

Long exposures

Supports hours-long deep-sky imaging

Performance highlights

Cooling capacity

-45 °C

Relative to ambient

Dark current

<0.003

e⁻/pixel/sec @ -20 °C

Dynamic range

75 dB

Scientific imaging

Resolution

2-20 MP

Multiple resolutions

In-Depth Product Overview

Advanced two-stage TEC cooling

Utilizes two-stage semiconductor TEC cooling to lower the sensor 35–45 °C below ambient, dramatically suppressing dark current. At -20 °C, typical dark current is under 0.003 e⁻/pixel/sec, enabling hours-long exposures without noticeable thermal noise. Precise temperature control and anti-condensation design ensure stable operation across environments.

High-performance BSI sensors

Equipped with Sony back-illuminated CMOS sensors offering very high quantum efficiency and ultra-low read noise. The BSI architecture places the photodiode above circuitry to maximize photon collection, delivering high SNR even in low light. Optimized electronics and multi-gain modes reduce read noise down to 1 e⁻, preserving fine detail. Pixel sizes from 2.4 µm to 4.63 µm balance resolution and sensitivity.

Scientific-grade imaging quality

Supports 8-bit/12-bit/16-bit output with up to 75 dB dynamic range and SNR up to 50 dB to meet rigorous research needs. Exposure spans from 50 µs to several hours, capturing fast events and long deep-sky integrations. Large onboard DDR plus USB3.0 high speed ensures lossless transfer of high-resolution frames, protecting scientific data integrity.

Industrial-grade reliability

CNC aluminum housing with efficient thermal design ensures stability during long runs. Anti-condensation window prevents moisture at low temps. USB3.0 single-cable power simplifies integration; optional 12 V auxiliary input provides steadier cooling. Operating range -10 to 50 °C with low power suits unattended long-term observation.

Comprehensive software ecosystem

SDK support across Windows, Linux, and macOS with C/C++ and Python enables quick integration into research systems. Companion software offers full camera control, acquisition, processing, and analysis. Standardized interfaces allow easy embedding into telescopes, spectrometers, microscopes, and other scientific instruments for reliable imaging solutions.