Поделиться:
Месяц | Минимальная цена | Макс. стоимость |
---|---|---|
Sep-15-2025 | 0.55 $* | 0.66 $* |
Aug-15-2025 | 0.53 $* | 0.14 $* |
Jul-15-2025 | 0.30 $* | 0.92 $* |
Jun-15-2025 | 0.96 $* | 0.9 $* |
May-15-2025 | 0.66 $* | 0.83 $* |
Apr-15-2025 | 0.52 $* | 0.69 $* |
Mar-15-2025 | 0.59 $* | 0.13 $* |
Feb-15-2025 | 0.62 $* | 0.45 $* |
Jan-15-2025 | 0.89 $* | 0.48 $* |
optical lenses manufacturer | |
SIO2 : | 99.9 % |
Density : | 2.2(g/cm3) |
Degree of hardness moh' scale : | 6.6 |
Melting point: | 1732°C |
Working temperature : | 1100°C |
Max temperature can reach in a short time : | 1450°C |
Acid tolerance: | 30 times than Ceramics , 150 times than Stainless steel |
Visible light transmittance : | above 93% |
UV spectral region transmittance: | 80% |
Resistance value : | 10000 times than ordinary glass |
Annealing point: | 1180°C |
softening point: | 1630°C |
Strain point: | 1100°C |
Other details
Parameter | Standard Grade | Precision Grade | Ultra-precision Grade |
Dimensional Tolerance | +/-0.1 | +/-0.1 | +/-0.1 |
Clear Aperture | >80% to >90% | >80% to >90% | >80% to >90% |
Surface Quality | 60-40 | 40-20 | 20-10 to 10-5 |
Parallelism | 1arc min | 30arc second | 1arc min |
Wavefront Distortion | 1λper 25 mm | λ/4 | λ/10 |
Protective Bevel | <0.25×45 deg | <0.25×45 deg | <0.25×45 deg |
Coating | Optional | Optional | Optional |
Dimension | Depend on material | ||
Thickness | Depend on material |
FAQ:
1.Q:Are you a factory or trading company?
A:We are a factory
2.Q:Where is your factory located? How can I visit there?
A:Our factory is located in Lianyungang ,China, about 2 hours train from Shanghai .
3.Q:What is the material of your products?
A:The material is quartz.
4.Q:How can I get some samples?
A: We are honored to offer you samples.
5.Q:How does your factory do regarding quality control?
A:Quality is priority. We have our professional quality control team to guard every step of the manufacturing
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