e o lithium tantalate crystal lens

{"cid":"91189418","title":"Optical Litao3 Lithium Tantalate Crystal Lens For Optical Instrument","imgUrl":"https:\/\/img.chinax.com\/nimg\/21\/64\/d990bf1af3d4a068cb97983426a9-200x200-1.jpg","attrs":{"Price":"USD 20~200\/pc","Brand Name":"Crystro","Model Number":"CR211201-03","Minimum Order Quantity":"1pc","Delivery Time":"4-5 weeks","Certification":"SGS\/COC","Place of Origin":"China","Payment Terms":"T\/T, Western Union, MoneyGram, Paypal","Supply Ability":"2000pcs per month","Packaging Details":"Transparent clean box","Item":"Optical Litao3 (Lithium Tantalate) Crystal Lens for Optical Instrument","Transparency Range":"400 \u2013 5000 nm","Absorption edge":"270nm","Refractive Indices":"no=2.176,ne=2.180(at 0.633 \u00b5m) no=2.131,ne=2.134(at 1.2 \u00b5m)","Orientation":"X-112\u00b0Y,36\u00b0Y,42\u00b0Y\u00b10.5","Diameter":"up to 4inch","Delivery":"1-4 weeks","Shipment":"Express,DHL.Fedex"}}