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Multi-Material Square & Cylindrical Optical Lens, BK7/K9 Fused Silica Sapphire CaF2 For Spectroscopy & Laser Diode

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Categories	Laser Focus Lenses
Brand	FELIX GLASS optical glass Manufacturing base
Model	FG-MAT-CYL-SQ-LENS
Optional Substrate	BK7(K9) optical glass, fused silica, sapphire, calcium fluoride (CaF2)
Lens Shape	Square flat lens, cylindrical rod plano-convex/plano-concave lens
SIZE	Custom square rectangular / cylindrical rod lens, customizable length, aperture & focal length
FOB port	SHENGZHEN SHANGHAI GUANGZHOU
Terms of Payment	L/C, D/A, D/P, Western Union, T/T, Paypal
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Multi-Material Square & Cylindrical Optical Lens, BK7/K9, Fused Silica, Sapphire, CaF2 For Spectroscopy & Laser Diode

Felix Glass square and cylindrical optical lens is customized for laser diode beam collimation/shaping and laboratory spectral analysis equipment, with four mainstream optical substrates available for different wavelength demands: BK7(K9) crown glass, high purity fused silica, sapphire crystal, calcium fluoride (CaF2).

Two mainstream shapes are supplied: square flat optical lens for compact spectral detection modules; cylindrical rod lens for one-dimensional linear laser beam shaping of laser diodes. Cylindrical structure realizes single-axis focusing/diverging to form uniform linear light spot; square flat lens acts as beam collimating window and focusing element for multi-channel spectrometers. Custom wavelength-matched AR anti-reflection coating can be deposited on surfaces to reduce reflection loss and improve light throughput.

Core Optical Specifications

- Optional Substrates: BK7(K9) optical glass, fused silica, sapphire, CaF2 calcium fluoride

- Lens Form: Square flat lens, cylindrical plano-convex/plano-concave rod lens

- Material Transmission Range

1. BK7/K9: 400–1100nm visible & near infrared, low cost

2. Fused Silica: 185–2100nm deep UV to near IR, UV laser compatible

3. Sapphire: 150–5500nm ultra-wide band, high hardness & high temperature resistance

4. CaF2: 150–7000nm deep UV to mid-infrared, FTIR spectrometer dedicated

- Surface Quality: Standard 60-40 scratch-dig, upgradeable to aerospace grade 20-10

- Surface Flatness: ≤ λ/10 @632.8nm precision polishing standard

- Coating Option: Custom AR coating optimized for UV, visible, NIR & MIR wavelength

Core Product Advantages

1. Four optional substrates cover deep UV, visible, near-infrared and mid-infrared full spectrum, match all laser diode and spectroscopy wavelength demands

2. Dual shape design: square lens for compact spectral instruments, cylindrical rod lens for linear laser diode beam shaping

3. Ultra-precision polishing, uniform beam quality without distortion, stable collimation repeatability for long-term laboratory use

4. Sapphire substrate features super high hardness, scratch-resistant for harsh industrial laser environments; CaF2 dedicated for infrared spectral analysis

5. Customizable aperture, cylinder length, focal length and AR coating spectrum to fit customer laser diode and spectrometer optical path drawings

6. Low bubble & striation blank material, low internal light absorption, improve signal-to-noise ratio of spectral detection equipment

Typical Application Scenarios

- Visible/UV/NIR laser diode collimation & linear beam shaping modules

- Laboratory UV-Vis-NIR Fourier transform spectrometers

- Industrial optical spectrum analysis measuring instruments

- Semiconductor laser detection optical assemblies

- Medical UV optical diagnosis & spectral imaging equipment

- High-temperature industrial laser monitoring optical systems

OEM Manufacturing Capability

We provide full one-stop optical processing including multi-material blank cutting, ultra-precision cylindrical CNC grinding, square flat double-sided polishing, wavelength-matched AR coating, edge chamfer/black edge treatment, strict spectral transmittance testing and beam uniformity inspection.

Prototype sampling, small-batch trial production and mass customization are supported. Every square and cylindrical lens is fully tested to meet customer-specified spectral and dimensional requirements before delivery.

Standard FAQ

1. How to select substrate between BK7, fused silica, sapphire and CaF2?

BK7 for low-cost visible-NIR; fused silica for deep UV laser; sapphire for high-temperature harsh environment; CaF2 for mid-infrared FTIR spectrometers.

2. What is the difference between square lens and cylindrical rod lens?

Square lens is flat focusing/collimating window for spectral equipment; cylindrical rod lens shapes laser diode into linear one-dimensional light spot.

3. Can I customize anti-reflection coating for laser diode wavelength?

Yes, we provide AR coating matched to 405nm, 450nm, 520nm, 635nm, 808nm, 905nm and other common laser diode wavelengths.

4. What equipment matches this multi-material square & cylindrical lens?

It fits laser diode collimation modules, laboratory spectrometers, industrial spectrum measuring instruments and semiconductor optical detection assemblies.

5. Do you provide mixed substrate sample orders?

We support single-material samples and mixed multi-substrate batch production, all lenses pass full spectral transmittance 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.