Solid wood composite flooring product quality requirements

The rosewood multi-layer parquet has the requirements of appearance quality, processing size and physical and chemical properties. Common physical and chemical performance requirements are:

Moisture content

It should be equivalent to the equilibrium moisture content of the place of use, otherwise the floor will be easily deformed and cracked after use.

Surface wear resistance

Reflects the durability of the paint on the floor surface.

Dip peeling

Reflects the glue performance of the floor rubber layer.

Paint film adhesion

It reflects the firmness of the paint film attached to the floor.

Formaldehyde emission

Reflects the environmental protection of laminate flooring.

Calcium Fluoride Lens

Calcium Fluoride Plano-Convex Lenses are ideal for demanding applications that require superior performance from the ultraviolet through the mid-wave infrared spectra.Calcium Fluoride PCX Lenses` low refractive index, high laser damage threshold, and low axial and radial-stress birefringence are highly suitable for use with Excimer lasers or for integration into infrared systems. Additionally, calcium fluoride features low solubility and offers superior hardness to comparable fluoride-based substrates, making these PCX lenses capable of withstanding harsh environments and exposure to the elements.

We offers high precision and quality caf2 Lens and windows with cost-benefit price as well as stable supply ability. Dimensions and shape depends on your project. Meanwhile, experienced engineer could advise you professional advices according to your applications, drawing is aslo available.


CAF2 uncoated curve


CAF2 material properties


CaF2 lens and windows specifications:
Standard precision High-precision
Dimension Tolerance φ5-150mm+0/-0.2 φ3-200mm+0/-0.2
Thickness Tolerance 1-50mm+/-0.1 1-50mm+/-0.05
Parallelism 1 arc minutes 10 arc seconds
Surface Quality 60/40 20/10
Flatness N<λ/2@633nm(at 50mm) N<λ/10@633nm(at 50mm)
Clear Aperture >90% >95%
Chamfer Protected <0.5mmx45deg Protected <0.5mmx45deg


Calcium Fluoride Lens,Calcium Fluoride Cylindric Lens,Calcium Fluoride Pcx Cylinder Lens,Calcium Fluoride Aspheric Lens

China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com