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Precision Fused Silica Plano-Concave Single Lens, UV-IR Transmissive Fused Silica Optical Lens

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Categories	Aspheric Lenses
Brand	FELIX GLASS optical glass Manufacturing base
Model	FG-FS-PL-CON-LENS
Material	High purity synthetic fused silica (fused quartz glass)
Lens Structure	Plano-concave single element, one flat surface + one concave curved surface
FOB port	SHENGZHEN SHANGHAI GUANGZHOU
Terms of Payment	L/C, D/A, D/P, Western Union
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Precision Fused Silica Plano-Concave Single Optical Lens

Felix Glass plano-concave single lens is manufactured from high-purity synthetic fused silica (fused quartz glass), a high-performance optical substrate with ultra-wide transmission covering deep ultraviolet to near-infrared band. The lens adopts plano-concave single-element structure: one flat plane surface, one concave curved surface, presenting negative focal length optical characteristic, which is specially used for laser beam expansion, beam divergence and chromatic aberration matching optical paths.

Ultra-precision CNC grinding and polishing guarantee high surface figure accuracy and ultra-low surface roughness. Fused silica features extremely low thermal expansion coefficient, stable optical performance under high-power UV laser irradiation, and excellent high temperature resistance, no deformation or light absorption drift under continuous industrial laser operation. Custom wavelength-matched AR anti-reflection coating can be deposited on both surfaces to reduce surface reflection loss and improve UV/IR light throughput.

Core Optical Specifications

- Raw Material: High purity synthetic fused silica (fused quartz glass)

- Lens Structure: Plano-concave single element, flat + concave dual surface

- Working Spectrum: 185nm – 2.1μm deep UV, visible light & near-infrared

- Optical Property: Negative focal length, divergent beam shaping function

- Surface Flatness: ≤ λ/8 @632.8nm high precision standard

- Surface Quality: Standard 60-40 scratch-dig, upgradeable to 40-20 high precision

- Thermal Expansion Coefficient: Ultra-low 0.55×10⁻⁶ /℃, stable under temperature fluctuation

- Coating Option: Custom broadband AR coating optimized for UV / 1064nm / 532nm laser wavelength

- Edge Treatment: Optional black edge coating to suppress stray light interference

Core Product Advantages

1. Fused silica substrate with ultra-wide UV-IR transmission, uniquely suitable for deep ultraviolet laser systems that ordinary optical glass cannot support

2. Plano-concave negative lens design, professional for laser beam expansion, collimation matching and optical path divergence correction

3. Extremely low thermal expansion & high heat resistance, no thermal deformation under long-time high-power UV laser irradiation

4. Ultra-precision polished surface, consistent focal length batch stability, low stray light interference

5. Customizable aperture, focal length, AR coating spectrum and edge shape to match UV laser, spectral analysis and precision measurement equipment

6. No bubble, no striation high-purity fused silica blank, low internal light absorption, stable long-term optical performance

Typical Application Scenarios

- Deep ultraviolet UV laser marking & engraving equipment

- Fiber laser beam expansion optical modules

- Laboratory UV-visible infrared spectrometers

- Precision industrial optical measuring instruments

- Semiconductor wafer inspection optical systems

- Medical UV optical diagnosis assemblies

OEM Manufacturing Capability

We provide full one-stop fused silica optical processing including fused quartz blank cutting, ultra-precision CNC grinding, high-precision surface polishing, wavelength-matched AR coating, black edge treatment, strict UV transmittance testing and surface figure inspection.

Prototype sampling, small-batch trial production and mass manufacturing are supported. Every fused silica plano-concave lens is fully tested to meet customer-specified spectral, dimensional and laser resistance requirements before delivery.

Standard FAQ

1. What is the main function of plano-concave fused silica lens?

It is a negative diverging lens, mainly used to expand laser beam, adjust optical path divergence angle, match optical system focal length; fused silica material supports deep UV laser that ordinary optical glass cannot transmit.

2. What advantages does fused silica have over BK7 optical glass?

Fused silica can transmit deep ultraviolet light below 300nm, with ultra-low thermal expansion and high temperature resistance, suitable for UV laser and high-temperature optical environments; BK7 glass only transmits 400nm and above visible light.

3. Can I customize focal length and anti-reflection coating for this lens?

Yes, we support custom aperture, negative focal length, and AR coating optimized for UV, 532nm green laser or 1064nm infrared laser working wavelength.

4. What equipment matches this fused silica plano-concave lens?

It fits UV laser marking machines, fiber laser beam expanders, laboratory spectrometers, semiconductor inspection optical systems and industrial precision measuring instruments.

5. Do you provide sample and mass production for fused silica optical lenses?

We supply prototype sampling, small trial batches and large-scale manufacturing, all fused silica lenses pass full spectral transmittance and surface quality inspection before shipment.

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What is your MOQ for custom optical glass and display glass parts?: Felix Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.

Can I get free glass samples for testing before bulk order?: Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.

What is the production lead time for custom optical glass components?: What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.

Are your optical glass products ISO, CE and RoHS certified?: All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.

Do you offer one-stop custom optical glass processing services?: Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.