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(jié)構(gòu)
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(chǔ)上。該儀器是測量寶石的臨界角,并將讀數(shù)直接轉(zhuǎn)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(xué)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(xué)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(zhuǎn)動寶石360°,經(jīng)驗豐富者可轉(zhuǎn)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
CEL-300 QSS100/ CEL-350 QSS400 CEL-430 QST100 CEL-450 CEL-490 DUD-930 DUD-950 SF-PA-10.0 DJLC-A SF-PA-10.0 SF-PA-11.6 SF-PA-13.0 SF-PA-15.8 SF-PA-18.5 SF-PA-21.2 KR-11A/B SF-PA-25.0 SF-PA-28.5 KR-12A SF-PA-34.5 VT-03F/04F SF-PA-42.5 DT-205L/DT-207L SF-PA-54.5 DT-311N SF-PA-10.0 SF-PA-11.6 SF-PA-13.0 DT-315N SF-PA-15.8 DT-725 SF-PA-18.5 SB-8001 SF-PA-21.2 SB-8002 UV-15 SF-PA-25.0 UV-16 SF-PA-28.5 SF-PA-34.5 SF-PA-42.5 AV-12 SF-PA-54.5 DA-40,8 SF-PE-10.0 SF-PE-11.6 SF-PE-13.0 LR-07 SF-PE-15.8 LR-20A SF-PE-18.5 SF-PE-21.2 SF-PE-25.0 KT-2000 SF-PE-28.5 KT-2010 SF-PE-34.5 SF-PE-42.5 SF-PE-54.5 KT-2008 SF-PP-7.0 KT-2002 SF-PP-10.0 KT-22 SF-PP-11.6 KU-1133 SF-PP-13.0 KU-2600 SF-PP-15.8 KU-2608 SF-PP-18.5 SK-6160 SF-PP-21.2 SK-6500 SK-6544 SF-PP-25.0 SK-6555 SF-PP-28.5 SK-4030 SF-PP-34.5 SF-PP-42.5 SF-PP-54.5 DJHT225W10 SF-SM-M12 SK-6180 DJGW1A SK-6188 SF-SM-M16 KF-1 SF-SM-M16 KF-20 SF-SM-M18 SF-SM-M20 SF-SM-M20 DJHT225W10 SF-SM-M24 DJHT225W09 SF-SM-M25 DH-2000A SF-SM-M25 SF-SM-M27 SF-SM-M32 SF-SM-M36 SF-SM-M48 SF-SM-M60 SF-SM-PG7 SF-SM-PG9 SF-SM-PG11 SF-SM-PG13.5 SF-SM-PG16 SF-SM-PG21 SF-SM-PG29 SF-SM-PG36 SF-SM-PG48 SF-SM-3/4 SF-SM-1″ SF-RQG-M12 SF-RQG-M16 SF-RQG-M16 SF-RQG-M18 KF-5 SF-RQG-M20 KF-8 SF-RQG-M18 SF-RQG-M16
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