GEMINIS 81k MM

Dual-Color Infrared Camera

GEMINIS 81k MM

with Mercury Cadmium Telluride (MCT) Image Sensor

Color 1: 3.4 µm – 4 µm Color 2: 4.5 µm – 5 µm

Technical Data

Features

Accessories

Lenses

Software

Technical Data

Features

Accessories

Lenses

MWIR Lenses

Model	Focal length	Spectral range	F#	WD
IR M 10	10 mm	3.0 µm – 5.5 µm	2.0	0.1 m – ∞
IR M 15	15 mm	3.0 µm – 5.5 µm	2.0	0.1 m – ∞
IR M 25	25 mm	3.0 µm – 5.5 µm	2.0	0.1 m – ∞
IR M 50	50 mm	3.0 µm – 5.5 µm	2.0	0.1 m – ∞
IR M 100	100 mm	3.0 µm – 5.5 µm	2.0	2 m – ∞
IR M 200	200 mm	3.0 µm – 5.5 µm	2.0	5 m – ∞

Microscope Lenses

Model	Mag	Spectral range	F#	WD
IR M Micro 1x	1x	3.0 µm – 5.5 µm	2.0	14 mm
IR M Micro 2x	2x	3.0 µm – 5.5 µm	2.0	14 mm
IR M Micro 5x	5x	3.0 µm – 5.5 µm	4.0	14 mm
IR M Micro 5x WD35	5x	3.0 µm – 5.5 µm	4.0	35 mm
IR Micro 10x Mirror	10x	1.0 µm – 11.0 µm	N/A	30 mm
IR M Micro SIL*	4x	3.0 µm – 5.5 µm	N/A	0 mm*

Close-up Lenses

Model	Mag	Spectral range	F#	WD
IR M CU 35/50 *	2 x	3.0 µm – 5.5 µm	N/A	35 mm
IR M CU 100/50 *	0.5 x – 0.7 x	3.0 µm – 5.5 µm	N/A	75 mm – 100 mm
IR M CU 250/50 *	0.2 x – 0.4 x	3.0 µm – 5.5 µm	N/A	135 mm – 250 mm
IR M CU 500/50 *	0.1 x – 0.3 x	3.0 µm – 5.5 µm	N/A	185 mm – 500 mm
IR M CU 500/100 **	0.2 x – 0.4 x	3.0 µm – 5.5 µm	N/A	250 mm – 500 mm

* attaches to IR M 50, ** attaches to IR M 100

Zoom Lenses

Model	Focal length	Spectral range	F#	WD
IR M 15-300 Zoom	15 mm – 300 mm	3.0 µm – 5.0 µm	4.0	10 m – ∞
IR M 28-850 Zoom	28 mm – 300 mm	3.0 µm – 5.0 µm	5.5	50 m – ∞

You have not found the optimal lens for your application? Ask the specialists for a customized solution!

Software

Datasheet

VIS Camera

integrated below IR

Filter wheel

dual mode: switching & spinning

Spectral range	3.4 – 4.0 µm & 4.5 – 5.0 µm
Detector technology	Mercury Cadmium Telluride (MCT)
Format	81 920 (320 x 256 Pixel)
Sensor size	9.60 mm x 7.68 mm
Pixel pitch	30 µm
Aperture	F/2
NETD	< 30 mK
Fullframe rate	200 Hz
Integration time	Adjustable
Operating mode	Snapshot (integrate-then-read)
A/D Resolution	14 bit
Dimensions (mm)	L=220, W=120, H=141
Weight	4 kg
Data interface	Camera Link
Input voltage	24 V
Power	< 40 W
Cooler	Stirling (Linear)
Working temperature	-15 °C to 50 °C
Storage temperature	-40 °C to 70 °C

Focal Plane Array (FPA) Detector	The camera uses a cryogenically cooled FPA quantum detector which counts incoming photons during the integration time. By using a global shutter, all pixels are sensitive during the same period of time. The FPA is mounted in an evacuated Dewar and is located behind a cooled radiation shield (“cold stop”).
Stirling Cooler	Coolers with different MTTF are available. In case of failure, IRCAM can replace the cooler in-house within a few working days.
Data Interface Camera Link	Camera Link is a well-established, stable and reliable interface between camera and computer (via framegrabber card). In “Medium” configuration, the interface uses two cables. Fiber-optic cables can be used to increase transmission length. Additional secondary data interfaces can be integrated.
Windowing Mode	In windowing mode, only a rectangular part of the image sensor is read out. Decreasing the vertical size results in a higher maximum frame rate.
Multiple Integration Time Mode	The camera can change the integration time from frame to frame. Up to 6 integration times can be pre-selected. The mode can be used to increase the camera´s dynamic range.
Image Meta Data	Every frame transmitted from the camera contains a lot of additional information which belongs to the image, like e.g. frame number, MIO signal status, operating hours, etc.
Custom Backpanel	Based on a modular concept, the camera backpanel is customized to support all available features and electrical interfaces of the camera.
Ventilation System	An active cooling system with integrated fans maintains the thermal drift on a low level, which is important for the measurement accuracy and permits to use the camera at elevated ambient temperatures.
Smart Lens Interface	Lenses are mounted with a square flange. The flange contains integrated electronics for storage of the lens ID and measure¬ment of the lens temperature. Camera and software automati¬cally recognize the lens and use the temperature information for thermal compensation. The lens is thermally isolated from the camera housing.

Data Interface Gigabit Ethernet	Connects to any PC via network interface card. Note: The maximum frame rate may be limited by the bandwidth.
Data Interface USB 3.0	Connects to any PC via USB 3.0. Optional: fiber-optic extension for long-distance transmission.
Data Interface 10-GigE	Connects to any PC via 10-GigE (fiber-optic transmission) For laptops: with Thunderbolt 3 adapter.
Data Interface CoaXPress	Alternative to Camera Link. Requires CoaXPress framegrabber.
MIO Measurement Interface	MIO D: 2 digital inputs, 2 digital outputs, MIO DA: plus 2 analog inputs
IRIG-B Input	For time signal from external digital IRIG-B signal source Optional: Adapter with analog input
GNSS/GPS Input	Built-in GNSS receiver. Requires external antenna (via SMA connector).

Dual-Mode Filter Wheel	Switching and synchronized spinning mode. 6 positions for standard filters with 25 mm – 25.4 mm (1 inch) diameter.
Filter Holder	Accepts standard filters with 25 mm – 25.4 mm (1 inch) diameter.
Motor Focus	Integrated into camera housing. Universal for all lenses. Operation by software (e. g. IRCAM Works).
Shutter	Camera-integrated, motorized shutter. Versions: passive, heated, temperature-controlled, NIR
VIS Camera	Integrated camera for visible range. Different versions available. Connected to PC via USB 2.0. C-Mount lens interface.
IP65	Sealing of camera housing, including lens flange. Use of sealed connectors.
Longlife Stirling Cooler	Cooler with MTTF 28.000 h
Embedded PC	Runs IRCAM Works software. Video output via HDMI. USB 2.0 for keyboard, mouse, remote control, storage media
IRCAM Rail	Compatible to NATO Accessory Rail (STANAG 4694), on top of the camera for mounting of handle, monitor, etc.

Basic calibration	0 °C to 100 °C
Low temperature calibration	-40 °C to 0 °C
Medium temperature calibration	100 °C to 250 °C
High temperature calibration	250 °C to 1000 °C and above

Control unit	Desktop PC (with framegrabber card) or laptop PC
MIO Cables	Standard, customized, different lengths, IP67
IRIG-B Converter	For conversion of analog to digital IRIG-B signals
Tripods	Light weight, heavy duty, geared head, …
Excitation sources	Electrical, induction, lamps, flashlight, …
Blackbodies	IRCAM Pocket Blackbody, IRCAM Compact Blackbody

IRCAM Works	Software for scientific and industrial R&D infrared imaging applications
Script for Works	Script-based automization & customization of measurements and processing of data
Lock-in for Works	Lock-in thermography for non-destructive testing and other applications
IRCAM SDK	Software library for using IRCAM cameras with several programming environments