Without a scratch Sapphire Lens

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Product Description

Overview

Use in Optics

Luminophor screens based on doped sapphire have been developed for accelera.

They are meant for the registration of intense beam parameters by means of digital TV facilities . In comparison with other materials, such screens provide higher light output. Their light output is linear up to 2 ⋅ 10 14 proton/cm 2 and decreases at Cr content < 0.066 mass%. The highest light output was recorded for screens with a thickness of 1.5 mm made of Al .

Although there are lots substrates which are regarded as potential materials to replace Sapphire Substrate, it is still dominated in the substrates (for GaN LED growth) market, because of its reasonable price and relatively low mismatch. Zhongju is capable of processing substrates according to customer needs. Currently, our sapphire substrate productions ranges from 2 to 12 inches with high quality and accurate orientation.

Table 1 Size of substrates

	2 inches Substrates	4 inches Substrates	6 inches Substrates
Diameter (mm)	50.9±0.1	100.1±0.1	150.1±0.1
Primary Flat Length (mm)	16±1	31±1	47.5±1

Table 2 Specification of substrates

Material	High purity Single Crystal Sapphire
Surface Orientation	C-plane ± 0.1°
Primary Flat Orientation	A-plane ± 0.5°
Broken edge length	≤3mm
Crack	0
Defect	No inclusion，twin，or boundary
Bubble and cloud	Dense bubbles, clouds, and scattered bubble marked and counted as defects by length
EPD	≤1000 pits/cm²

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