折射儀:
WYA-2W,WYA,2WAJ,WYA-2S,WYA-1S,WSL-2,WGG-60,MASTER-H100,MASTER-10M, MASTER-20M,MASTER-20T,HSR-500,R-5000,N-3000E,S-10E,S-28E,S/MILL-E,DR6000, DR6000-T,DR6100,DR6100-T,DR201-95,DR201+95OE,DR301-95,AR2008,AR4,AR4D,HR10,HR181,HRKL32,HRN20,HRN32,HRT32,HRN62,HRT62,HRN82,HR92,HRN30NEW,HR900,HR901,HR27-100,HRS16,HR146,HRM18,HRMT18,HRO32,HROT32,HRKFZ1,HR25-800,WAY-A,WYV-V, WYL-4, WYL-3, WGT-B,
儀器結構
折射儀主要由高折射率棱鏡(鉛玻璃或合成立方氧化鋯)、棱鏡反射鏡、透鏡、標尺(內(nèi)標尺或外標尺)和目鏡等組成。
工作原理
折射儀的工作原理是建立在全內(nèi)反射的基礎上。該儀器是測量寶石的臨界角,并將讀數(shù)直接轉換成折射率值。
產(chǎn)生全反射的條件:
1.折射儀的高折射率棱鏡必須為光密介質(zhì)
2.待測寶石為光疏介質(zhì)
3.接觸液使棱鏡與待測寶石之間形成良好的光學接觸
操作要
1. 接通電源、打開儀器
2. 用酒精清洗寶石和棱鏡
3. 在折射儀棱鏡上點一滴接觸液(直徑約2mm為宜),使用鈉光照明,可見油的陰影邊界
4. 寶石大的臺面放入棱鏡上,浸油使寶石和棱鏡之間形成良好的光學接觸
5. 眼睛靠近目鏡可觀察陰影區(qū)和明亮區(qū)并讀數(shù),讀數(shù)保留小數(shù)點第三位
6. 按順序轉動寶石360°,經(jīng)驗豐富者可轉動寶石0°、45°、90°進行觀察和讀數(shù)
7. 測試完畢,將寶石輕推至金屬臺上,取下寶石
8. 清洗寶石和棱鏡
主要用途
1.鑒定寶石,可測定RI1.35-1.81之間寶石的折射率值
2.可測定寶石的雙折射率(DR)
3.確定寶石的軸性,如一軸晶、二軸晶和各向同性(等軸晶系、非晶質(zhì))
4.確定寶石的光性符號,如各向異性寶石的正光性和負光性
Surfix P FN Ni50-CP80-Y1X GDYQ-5000S Ni20-CP40-VP6X2 Surfix P F Bi40-CP80-VP6X2 GDYQ-6000S Bi40-CP80-LiU Surfix P N Ni5-M12SK-AN6X GDYQ-1200SC Bi2-M12SK-AP6X Bi2-M12SK-Y1X Bi5-M18SK-AZ3X Surfix PB F Bi5-M18SK-RP6X Surfix PB N Ni10-G18SK-AN6X Ni10-G18SK-Y1X Surfix easy I F Ni10-G18SK-RD4X Surfix easy E FN Ni8-M18SK-AD4X Ni8-M18SK-LiU Surfix easy E F Ni8-M18SK-RZ3X NBN4-12GM50-E0 NBB10-30GM50-E0 easy F3.5 easy FN3.5 Surfix Pro S Surfix S FN 1.5 F 1.5 XCC8 XCC8 XCC8 N 1.5 FN 3.5 F 3.5 F10 GDYQ-103SC FN1.5/90 FN 0.2 PHYNIX 10098 GDYQ-201SA2 PHYNIX 10844 GDYQ-801S GDYQ-901SA2 GDYQ-6000SA2 GDYQ-8000SA2 GDYN-110S GDYN-203S GDYN-206S WGZ-1 GDYQ-1108S WGZ-B GDYQ-1200S WGZ-1B GDYQ-105S GDYQ-106S WGZ-1C GDYQ-100SA1 GDYQ-8000S WGZ-2-PJ GDYQ-1101MA3 GDYQ-1101MA2 WGZ-2-XJ WGZ-2000 GDYQ-1101M WGZ-2000A GDYQ-103S WGZ-4000 GDYQ-107S WGZ-4000A GDYQ-109S GDYN-110SA GDYN-110SB GDYN-303S GDYN-106SD WGZ-1C GDYN-308S WGZ-2C GDYN-301M GDYN-300M GDYQ-301MA2 GDYQ-601M MDL2-E WGG60 CJX8 GDYQ-100M GDYQ-110SB GDYQ-110SC GDYQ-110SE GDYQ-110SF GDYQ-110SG GDYQ-110SH GDYQ-110SI E2E-CR8C1 E2E-CR8C2 E2E-CR8B1 GDYQ-110SJ E2E-CR8B2 GDYQ-110SK E2E-X1C1 GDYQ-110SL E2E-XIC2 GDYQ-5000SA E2E-X1B1 GDYQ-210SD E2E-X1B2 E2E-X1R5E1 GDYQ-110SM GDYN-1096SC E2E-X1R5F1 E2E-X1R5E2 WGG60A E2E-X1R5F2 E2E-X2ME1 E2E-X2MF1 |