Item |
Powder |
Oiled powder |
Granule |
Appearance |
Light yellow or orange yellow grain |
||
Initial M.P. °C ≥ |
80.0 |
80.0 |
80.0 |
Ash % ≤ |
0.30 |
0.30 |
0.30 |
Heating Loss % ≤ |
0.40 |
0.40 |
\ |
Methanol Insoluble % ≤ | 0.40 | 0.40 | 0.40 |
Granule Diameter mm |
\ |
\ |
1.0-3.0 |
RFQ:
Q1: Have your product quality been approved by third party? Â
Yes,all products are strictly tested by our QC,and approved by third party like SGS.So we can gurantee the good quality.
Q2: Do you accept sample order? Â
 Yes,we accept small order from 20g,200g and 2kg for your evaluation quality of our goods.Â
Q3: Is free samples  avalibale? Â
Yes,free sample could be provided,but shipping cost will be paid by customers.Â
Q4: How long will you deliver the goods on board ?   Â
within ten days after order confirmation.
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Zinc Selenide Meniscus Lenses,meniscus lenses ,positive meniscus lenses, negative meniscus lenses ,meniscus concave lens
Our company can produce many kinds of flat convex Spherical Mirrors with different sizes, radii and base materials, flat convex spherical Mirrors, flat concave spherical mirrors, double convex spherical mirrors, double concave spherical mirrors, meniscus spherical mirrors and other ordinary spherical mirrors. Special spherical mirror can also be processed, such as: achromatic spherical mirror, aspheric surface and spherical mirror group.
Materials: optical glasses such as flint glass, ultraviolet fused quartz and infrared fused quartz, as well as optical crystal materials such as calcium fluoride (CaF2), germanium (Ge), Zinc selenide (ZnSe) and silicon (Si)
Focal length: ±5mm -- ±1000mm±1%
(Germany TIROPTICS OPTOMATIC2000 test)
Outer circle: 4mm -- 200mm±0.1mm
Center thickness tolerance: ±0.1mm
Center deviation: 3-5 points
Surface accuracy: /2@
Surface quality: 40/20
Effective diameter: 90%
Plating film: according to customer requirements can be coated
In addition, we have more than a thousand kinds of standard products, and some of the standard products in stock to meet your needs
Zinc Selenide Meniscus Lenses,Negative Meniscus Lens,Diverging Meniscus Lens,Concave Meniscus Lens
Gold Dragon Optics Electronic Technology CO.,Ltd , https://www.golddragon-optics.com