CTR3CMOS Series

Product Introduction

The CTR3CMOS series is designed for low-light and long-exposure scenarios, featuring Sony Exmor and other high-performance CMOS sensors with resolution coverage from 0.39–20 MP and sensor formats from 1/2.9″–4/3″. Built-in thermoelectric cooling (TEC) and closed-loop temperature control reduce sensor operating temperature by approximately 5–10 °C below ambient temperature. Combined with anti-fogging structure, it effectively suppresses dark current and condensation, ensuring imaging stability and consistency during low-temperature, long-duration acquisition.

Data links support USB3.0 (5 Gbit/s) and GigE (1 Gbit/s, model dependent), maintaining stable throughput under high-speed/long-distance transmission. Supports 8/12/16-bit data output (model dependent), ROI/windowing and multi-gain modes. Cameras provide free-running, software/hardware triggering and multi-camera synchronization, with industrial-grade I/O for integration with external light sources, motion platforms or production line signals. Maximum exposure can reach approximately 300 s, suitable for chemiluminescence, fluorescence, spectroscopy and other weak signal applications.

Includes ToupView software and provides cross-platform SDK (Windows / Linux / macOS) for secondary development and system integration, meeting diverse requirements for scientific research, industrial inspection and general scientific imaging.

Product Features

High-sensitivity low-noise CMOS (Sony Exmor and others, model dependent), covering visible/NIR applications
Thermoelectric TEC cooling: typical ΔT ≈ 5–10 °C (below ambient), significantly reducing dark current
Closed-loop temperature control and temperature setting/locking, balancing low noise with quantum efficiency (QE) maintenance
Anti-fogging optical structure, suppressing window/sensor condensation during low-temperature and long-exposure conditions
Resolution coverage 0.39–20 MP, sensor formats 1/2.9″–4/3″ (model dependent)
Bit depth output: 8 / 12 / 16-bit (model dependent), enhancing weak signal gradation and dynamic range
Maximum exposure approximately 300 s (model dependent), suitable for extremely low-light/low illumination imaging
Data interfaces: USB3.0 (5 Gbit/s) / GigE (1 Gbit/s, model dependent), stable long-distance transmission

Acquisition modes: free-running, software trigger, external hardware trigger; supports multi-camera synchronization and strobe control
Image functions: ROI/windowing, digital binning, mirroring, Gamma/LUT, multi-gain modes (model dependent)
Industrial-grade I/O: optically isolated trigger input/strobe output and programmable GPIO (model dependent)
Optional optical windows: IR-CUT / dual AR coating (model and application dependent)
Metal (aluminum alloy) CNC housing with electromagnetic shielding and heat dissipation optimization, suitable for long-term stable operation
Software and ecosystem: includes ToupView; provides Windows / Linux / macOS SDK, compatible with common third-party interfaces
Typical applications: chemiluminescence/fluorescence microscopy, spectroscopy/low-light detection, materials/semiconductor analysis, etc.

Get Quote Product Manual

Product Models

Select the CTR3CMOS Series that fits your application requirements

Product Model	Effective Pixels	Sensor Size	Shutter Type	Frame Rate (FPS)	Sensor Type	Data Interface	Color	Actions
CTR3CMOS00390KMA	0.39MP (720×540)	4.97 mm × 3.73 mm 1/2.9" (6.21 mm)	Global Shutter	20 fps@720×540	Sony IMX287LLR	USB3.0	Monochrome	View Details
CTR3CMOS00503KMA	0.5MP (800×620)	7.2 mm × 5.58 mm 1/1.7" (9.07 mm)	Global Shutter	20 fps@800×620	Sony IMX426LLJ	USB3.0	Monochrome	View Details
CTR3CMOS01700KPA	1.7MP (1600×1100)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	98.6 fps@1600×1100	Sony IMX432LQJ	USB3.0	Color	View Details
CTR3CMOS01700KPA-G	1.7MP (1600×1100)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	66 fps@1600×1100	Sony IMX432LQJ	GigE	Color	View Details
CTR3CMOS01700KMA	1.7MP (1600×1100)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	98.6 fps@1600×1100	Sony IMX432LLJ	USB3.0	Monochrome	View Details
CTR3CMOS01700KMA-G	1.7MP (1600×1100)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	66 fps@1600×1100	Sony IMX432LLJ	GigE	Monochrome	View Details
CTR3CMOS07100KPA	7.1MP (3200×2200)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	51.3 fps@3200×2200 133.8 fps@1584×1100	Sony IMX428LQJ	USB3.0	Color	View Details
CTR3CMOS07100KPA-G	7.1MP (3200×2200)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	16.4 fps@3200×2200 66 fps@1600×1100	Sony IMX428LQJ	GigE	Color	View Details
CTR3CMOS07100KMA	7.1MP (3200×2200)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	51.3 fps@3200×2200 133.8 fps@1584×1100	Sony IMX428LLJ	USB3.0	Monochrome	View Details
CTR3CMOS07100KMA-G	7.1MP (3200×2200)	14.4 mm × 9.9 mm 1.1" (17.46 mm)	Global Shutter	16.4 fps@3200×2200 66 fps@1600×1100	Sony IMX428LLJ	GigE	Monochrome	View Details
CTR3CMOS20000KPA	20MP (5440×3648)	13.056 mm × 8.755 mm 1" (15.86 mm)	Rolling Shutter	19.0 fps@5440×3648 48.8 fps@2736×1824 59.4 fps@1824×1216	Sony IMX183CQK	USB3.0	Color	View Details
CTR3CMOS20000KPA-G	20MP (5440×3648)	13.056 mm × 8.755 mm 1" (15.86 mm)	Rolling Shutter	4.5 fps@5440×3648 18.5 fps@2736×1824 41.7 fps@1824×1216	Sony IMX183CQK	GigE	Color	View Details
CTR3CMOS20000KMA	20MP (5440×3648)	13.056 mm × 8.755 mm 1" (15.86 mm)	Rolling Shutter	19.0 fps@5440×3648 48.8 fps@2736×1824 59.5 fps@1824×1216	Sony IMX183CLK	USB3.0	Monochrome	View Details
CTR3CMOS20000KMA-G	20MP (5440×3648)	13.056 mm × 8.755 mm 1" (15.86 mm)	Rolling Shutter	4.5 fps@5440×3648 18.5 fps@2736×1824 41.7 fps@1824×1216	Sony IMX183CLK	GigE	Monochrome	View Details
CTR3CMOS45000KMA	45MP (8176×5616)	18.93 mm × 13.00 mm 1.4" (22.53 mm)	Rolling Shutter	8.1 fps@8176×5616 30.0 fps@4080×2808 8.1 fps@7408×5556 33.0 fps@3696×2778 10.4 fps@8176×4320 34.7 fps@4096×2160 62.5 fps@2048×1080 86.5 fps@1360×720	Sony IMX492LLJ-C	USB3.0	Monochrome	View Details

Product Overview

Professional Features of CTR3CMOS Series Thermoelectric Cooled Cameras

The CTR3CMOS series represents ToupTek's advanced high-performance scientific-grade thermoelectric cooled cameras, featuring Sony back-illuminated CMOS sensors combined with two-stage thermoelectric cooling (TEC) technology and low-noise readout architecture. Specifically designed for long-exposure imaging, ultra-low dark current applications, and high-sensitivity scientific imaging, this series offers high quantum efficiency (QE), wide dynamic range, and 16-bit high bit-depth output, making it ideal for astronomical observation, spectroscopy, and low-light experimental applications.

Core Features

Two-Stage TEC Cooling

40℃ temperature reduction, ultra-low dark current

Back-Illuminated CMOS

Sony sensor with high quantum efficiency

16-bit High Bit Depth

Scientific-grade data precision

Anti-Condensation Design

All-weather stable operation

Performance Parameter Highlights

Cooling Capacity

-40℃

Below ambient temperature

Dark Current

<0.002

e⁻/pixel/sec@-20℃

Dynamic Range

75 dB

High contrast imaging

Resolution

2-26 MP

Multiple specifications

In-Depth Product Introduction

Scientific-Grade Two-Stage TEC Cooling System

Employing two-stage thermoelectric cooling technology, the sensor temperature can be reduced to approximately 40℃ below ambient temperature, effectively suppressing dark current generation. At a working temperature of -20℃, the dark current is less than 0.002e⁻/pixel/sec. This ultra-low dark current characteristic enables the camera to perform hours-long exposure without generating significant thermal noise. The precision temperature control system combined with anti-condensation design ensures long-term stable operation under various environmental conditions, particularly suitable for unattended scientific observation missions.

High-Performance Back-Illuminated Sensor Architecture

Equipped with Sony back-illuminated CMOS sensors featuring extremely high quantum efficiency and ultra-low readout noise. Combined with high and low gain modes and optimized electronic architecture, the readout noise is as low as 1e⁻, delivering high-quality images even under low-light or long-exposure conditions. Pixel sizes ranging from 2.4µm to 4.63µm perfectly balance high resolution with high sensitivity requirements, providing an ideal hardware foundation for weak signal detection.

Professional-Grade Imaging Quality Assurance

Supporting 8-bit/12-bit/16-bit output, the 16-bit high bit-depth mode provides extremely high data precision for scientific analysis. The dynamic range can reach 75dB with a signal-to-noise ratio exceeding 50dB, meeting high-contrast scientific imaging requirements. Flexible exposure control ranges from 50µs minimum to several hours, capable of capturing both rapid phenomena and deep space long-term observations. USB3.0 interface with built-in large-capacity cache ensures stable output of high-resolution images.

High-Reliability Industrial-Grade Design

Featuring CNC metal housing with integrated high-efficiency heat dissipation system, ensuring temperature stability during long-term operation. Anti-condensation window design effectively prevents condensation issues on optical windows during low-temperature operation. The all-metal body provides excellent electromagnetic shielding performance, reducing external interference effects on image quality. Operating temperature range of -10~50℃ supports long-term stable operation, meeting all-weather scientific observation requirements.

Comprehensive Software Ecosystem Support

Providing full-platform SDK support for Windows, Linux, and macOS, compatible with mainstream development languages including C/C++ and Python, facilitating rapid integration into existing scientific systems. Standardized interface design and comprehensive development documentation enable easy embedding into various scientific equipment such as astronomical observation systems, spectrometers, and microscopes. USB3.0 single-cable power design simplifies system deployment while supporting external 12V auxiliary power for more stable cooling performance.