Crystalline Rhombihedral Optical Calcium Carbonate Calcite Crystal

• Customization: Available
• Usage: Lighting, Medical, Optical, Photography
• Type: Cyrstal
• Model NO.: TT Crystal 3
• Transmittance: >95%
• Shape: Single-lens
• Material: Optical Glass
• Lenses Color: Clear
• Certification: ISO9001
• Customized: Customized
• Coating: HC
• Min: 1 Unit
• Payment Term: L/C, T/T, D/P, Western Union, Paypal, Money Gram
• Thickness: as Required
• Surface Quality: 40-20 or Better
• Polished: Yes
• Centration: 1arc Minutes
• Bevel: Protective Bevel as Needed
• Wavelength Range: 400nm-700nm
• Transport Package: Carton, Blister, Customized
• Specification: As required
• Trademark: TT
• Origin: Tianjin
• HS Code: 9001909090
• Production Capacity: 4000pieces/Month
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Crystalline Rhombihedral Optical Calcium Carbonate Calcite Crystal 

Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3).It's a negative uniaxial crystal and mostly used as visible and near IR polarizers. It has high birefringence, wide spectral transmission and availability in reasonably sized rhombs.

Manufacturing accuracy of  Calcite or according to customer's need 

Material:	Domestic or foreign materials are selected based on clients' requests
Size:	max.30~45mm
Length:	max.25~35mm
Surface Quality:	20-10
Optical Deviation:	<3 arc min
Optical Axis Orientation:	+/-0.5°
Flatness:	< Lambda/4 @633nm
Wave Front:	< Lambda/4 @633nm
Coating:	According to  custmer request
Physical Properties:
Transparency Range	350~2300nm
Partical Shape	Crystalline rhombihedral
Density	2.7g/cm3
Thermal Expansion Coefficient	Low susceptibility to moisture
Mohs Hardness	3
Thermal Expansion Coefficient	aa=24.39x10-6/k; ac=5.68x10-6/k
Crystal Class	Negative uniaxial with no=na=nb, ne=nc
Refractive index, birefringence(Δ=ne-no) and walk-off angle at 45ºC(ρ)	no=1.6557,ne=1.4852
	Δn=-0.1705,ρ=6.20@630nm
	no=1.6629,ne=1.4885
	Δn=-0.1705,ρ=6.20°@1300nm
Sellmeier Equation	no2=2.69705+0.0192064/(λ2-0.01820)-0.0151624λ2
	ne2=2.18438+0.0087309/(λ2-0.01018)-0.0024411λ2

Application field

Factory:
Tianjin Tengteng Optoelectronic Technology Co., Ltd. was established in 1995, focused on production, research and sales of precision optics. We have professional engineers to research and develop, and design all kinds of lens.


Other Lenses Handle
Optical Lens Design
Lens assembly and debugging


Packaging& Shipping
Package detail:
Inside Packing: Special protective packing for optical products
Outside Packing: Carton
Packing can be made according to customer's need


Payment Term:
T/T,Western Union,Paypal,L/C

Customer Question & Answer
1. Are you a manufacturer or trader? Can I visit your factory or office? How to see your factory on line?
We are a manufacturer in Tianjin, China.You are welcome to visit our factories and offices at any time.We have a video to show you our factory in detail.

2.What's your minimum order quantity?
1 unit.

3.What's your payment term?
T/T,Letter of Credit, Western Union etc.

4.Could I get free samples before making an order?
Your samples fee will be refunded when you place a large order.

5.Do you have professional person to design according to my requirement?
Of course, we have R&D department to work with you and provide you the best service until you will be satisfactory.

6. What's the lead time?
It is up to your quantity and specification and our stock.
Your products will be sent within 2 days once you make payment for the stock products.

7. Do you have enough stock?
Sure. We have enough stock because our factory is in this area for over 20 years.You can contact our salesperson to get stock at any time.

8. Can you accept OEM or ODM?
Yes, we accept all OEM and ODM.

9. Do you give a warranty of your products?
Yes, if there is a quality problem, you can contact us by email or skype or whatsapp, we can give you the solution in time. We will rework or provide the replacements to you at our cost according to actual conditions.