A CONVERSION MODULE CONSISTING OF A BETA BARIUM BORATE CRYSTAL WHICH CONVERTS GREEN LIGHT INTO ULTRA VIOLET LIGHT. THE CRYSTAL IS MOUNTED IN A TEMPERATURE CONTROLLED CLAMP. AN EMBEDDED THERMISTOR IS USED TO MEASURE THE TEMPERATURE OF THE CRYSTAL AND A CONTROL LOOP IS USED TO APPLY CURRENT TO AN EMBEDDED HEATER TO CONTROL THE CRYSTAL TEMPERATURE. THIS ASSEMBLY IS A COMPONENT PART OF A LARGER ULTRA VIOLET LASER SYSTEM.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING (9013) LIQUID CRYSTAL DEVICES NOT CONSTITUTING ARTICLES PROVIDED FOR MORE SPECIFICALLY IN OTHER HEADINGS; LASERS, OTHER THAN LASER DIODES; OTHER OPTICAL APPLIANCES AND INSTRUMENTS, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 9013 90 PARTS AND ACCESSORIES CN CODE 9013 9080 OTHER THAN LIQUID CRYSTAL DEVICES TARIC CODE 9013908000 OTHER THAN FOR TELESCOPIC SIGHTS FOR FITTING TO ARMS OR FOR PERISCOPES GENERAL NOTE (III) TO CHAPTER 90 PARTS AND ACCESSORIES