1. CRYOGENIC COOLERS YOUR PARTNER IN CRYOGENICS Le-Tehnika d.o.o. Šuceva 27 SI - 4000 Kranj Slovenia, Europe Tel.: +386 4 20 20 200 Fax: +386 4 204 21 22 www.le-tehnika.com

2. CRYOGENIC COOLERS Le-tehnika – basic data -Established in 1989 -3 main divisions: –Telephony since 1989 –Hydraulics&Pneumatics since 1995 –Cryogenics since 2000 -A doughter company Sinoslo Technology (SIP) Ltd. established in year 2003 in China

3. CRYOGENIC COOLERS WORLDWIDE LOCATIONS Le-tehnika d.o.o. Kranj Slovenia Headquarters, production, distribution, 92 employee, 2 retail shops Le-tehnika d.o.o. Croatia Distribution, 3 employees Syndeo, d.o.o. Bosnia Distribution, 1 employees Sinoslo Technology (SIP) Ltd. Suzhou, China Production, distribution, 90 employees

4. CRYOGENIC COOLERS ORGANISATION

5. CRYOGENIC COOLERS Organiza tion – Main divisions Telefony Cryogenics Hidraulics & Pneumatics

6. CRYOGENIC COOLERS ISO in Le-tehnika – accomplished STANDARD S Standard s - ISO 9001:200 8 - ISO 14001:2004 (environmental)

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8. CRYOGENIC PROGRAM Specific advantages of Le-tehnika: Le-tehnika is specialized in development and production of cryogenic coolers systems of different configurations and performances and its accessories. They are generally intended for IR detector’s cooling used in IR cameras or missiles with an IR head for defense industry, police, security and in other applications. - Flexible production (quick delivery of samples or small quantities) - R&D team (customized solutions for each customer) - Competitive prices - Quality

9. CRYOGENIC COOLERS CRYOGENIC DEPARTMENT’S EQUIPMENT High purity air, N2 and Argon installation with pressures up to 700 bar Climatic Chambers for environmental testing Measuring stands for JT coolers performance measurements Clean room class ISO7 Filling stations for Stirling cycle devices Sarix EDM machine for production of small parts Multiple turning machines HYDRAULIC DEPARTMENT has its own workshop, which we are using for production of bigger parts.

10. CRYOGENIC COOLERS Some fractals from our productioon Clean room class ISO7 Stirling Coolers assemby Assembly working stand for JT coolers Nozzle drilling and other preccision milling operations Cleaning and purging room

11. CRYOGENIC COOLERS JOULE THOMSON MINICOOLERS Capabilities: -Design and construction of coolers. -Heat exchangers calculation and manufacturing. -Different types of orifice designs, dimensioning and construction of orifice in accordance with required cooler consumption. -Technology of bellow type self regulating mechanism. -Technology of other types of self regulating mechanism (bimetal,etc.). -Technology of Active Controlled type JT cooler. -Technology of Dual flow JT coolers -Production of JT coolers. -Testing and measuring of JT cooler performances for pressures up to 700bar at different ambient temperatures -Typical outer diameters: 5.18mm, 7.22mm, 10.3mm, 11.17mm -Design proving, qualification testing etc.

12. CRYOGENIC COOLERS JOULE THOMSON MINICOOLERS BY SHAPE - Cylindrical - Conical - Combined (cylindrical, conical)

13. CRYOGENIC COOLERS JOULE THOMSON MINICOOLERS BY TYPE OF CONSTRUCTION * Fixed orifice * Actively controlled (regulated) * Fast cool down * Self – regulated* Multilayer

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15. JOULE THOMSON MINICOOLERS ACTIVELY CONTROLLED COOLER - ACC Advantages: - more reliable, - less influenced by gas impurities, - more stable operation, - operating temperature is not fixed with the gas used and could be set as needed. Used for cooling of IR head on IRIS-T rocket.

16. CRYOGENIC COOLERS ACCESSORIES -High pressure gas containers (bottles) -Quick release valves (TBD) -High pressure gas cleansers -Pure Air Monitors (PAM) -Test dewars JOULE THOMSON MINICOOLERS ACCESSORIES

17. CRYOGENIC COOLERS CRYOCOOLERS BASED ON STIRLING CYCLE Capabilities: -Design of Stirling coolers for different cooling power requirements. -Regenerators calculation and manufacturing. -Production of Stirling coolers. -Testing and measuring of Stirling cooler performances. Types of Stirling coolers: -Split Stirling cryocooler with rotary drive (0.5W at 80K of cooling power) -Integral Stirling cryocooler with rotary drive (up to 3/4W of cooling power)

18. CRYOGENIC COOLERS -Cooling power around 500mW at 80K -Power consumption app. 35 W -Temp. range: -40°C to +70°C -Different forms and lengths of cold finger available on request CRYOCOOLERS BASED ON STIRLING CYCLE SPLIT WITH ROTARY DRIVE

19. CRYOGENIC COOLERS CRYOCOOLERS BASED ON STIRLING CYCLE INTEGRAL WITH ROTARY DRIVE Input Voltage: …………………… ………………… 21-28 VDC Typ. Steady State Input Power ………….. ….. (200mW @80K @ 23°C): 8W Typ. Cooldown time to 80K (200J)...................... < 5 min Maximum Input Power Required................ 17 W (during cooldown ) Operating Ambient Temperature Range.... - 40  C to + 71  C Weight........................................................< 470gr MTBF............................................................ > 10000h (Expected)

20. CRYOGENIC COOLERS DEVELOPMENT OF INTEGRAL STIRLING COOLER with ROTARY DRIVE ROADMAP – generation 2 Target specifications: Cooler Weight: <500 gr. Input Voltage: 18-24 VDC Max.Cooling power: > 500mW @80 K Steady State Input Power (200mW @80K and 23°C): 8 W Typ. Maximum Input Power: 17 W Cooldown Time (200J @23°C): < 5 min Typ. Ambient Temperature Range: - Operational: -40°C...+71°C - Non-Operational: -56°C...+85°C Meets Environmental Conditions per MIL-STD-810D MTTF > 5,000 Hours Time frame Jan.2011 Design verifications with Environmental tests April 2011 Start of Life time testing Jun 2011 Industrialization

21. CRYOGENIC COOLERS DEVELOPMENT OF SMALL INTEGRAL STIRLING COOLER with ROTARY DRIVE ROADMAP – generation 3 Target specifications Cooler Weight: < 250 gr. Input Voltage: 12VDC Steady State Input Power (150mW @110K @23°C): 3W Typ. Maximum Input Power: 15W Cooldown Time (150J @23°C): 5 Minutes Typ. Ambient Temperature Range: - Operational: -40°C...+71°C - Non-Operational: -56°C...+85°C Meets Environmental Conditions per MIL-STD-810D MTTF > 10,000 Hours Time frame Mar. 2011 Design development start (shape, materials, el. motors,…) Aug. 2011 Models, preliminary tests Dec. 2011 Design verifications with Environmental tests Jun 2012 Industrialization

22. CRYOGENIC COOLERS AVAILABLE TECHNOLOGIES & POTENTIAL TECHNOLOGIES ON SHORT TERM SCALE -PAM (PS or PR versions) Capacity: 10 units/month at the moment Samples available in 8 weeks -Self regulated JT cryocoolers or actively controlled JT coolers Capacity: 80 -100 units per month. First samples available in few months. For special flange request some development time needed.

23. CRYOGENIC COOLERS -Self regulated JT cryocoolers with special regulating demands. The development is needed and first samples available app. 6 months after start of the project. Production in agreement with customer. -High pressure fast cooldown JT cryocoolers (special demands). -Quick release valves, depend on quantities. -Split Stirling cryocooler 0.5W Serial production available in 2011 -Integral 0.5W Stirling cryocooler Serial production available in 2011. -Linear stirling and Pulse tube closed cycle cooler.. Further development needed. AVAILABLE TECHNOLOGIES & POTENTIAL TECHNOLOGIES ON LONG TERM SCALE

24. CRYOGENIC COOLERS More details about our company and products on www.le-tehnika.com www.le-tehnika.com

25. CRYOGENIC COOLERS Thank you for your attention! You are kindly invited to visit us in Slovenia!