Precision quartz and optical glass components manufactured by BY Photonics
Fused silica and sapphire parts for laser, medical and semiconductor applications
BY Photonics precision glass machining facility in Tianjin, China
01 / 03
Tianjin BY Photonics Co., Ltd. · Est. 2010

Precision Quartz, Sapphire & Optical Glass Components Manufacturer

We machine fused silica, fused quartz, borosilicate, sapphire and laser-grade doped glass strictly to your drawings — from UV-grade windows and spectroscopy cuvettes to laser flow tubes, diffuse reflectors and semiconductor quartzware.

Cold working, CNC machining, oxyhydrogen flame working and capillary redrawing run under one roof in Tianjin, China. That means one accountable supplier, consistent material traceability and engineers who review your drawing before a single part is cut.

Explore Product Range Talk to an Engineer
Capability ReadoutOnline
Materials
JGS1 · JGS2 · JGS3 fused silica, borosilicate, optical & IR glass, Sm/Ce-doped glass, sapphire, PTFE & laser ceramics
Processes
Grinding · Polishing · CNC · Flame working · Capillary redrawing
Flatness
Up to λ/10 @ 632.8 nm on request
Surface quality
Down to 20-10 scratch-dig
Engineering review
< 24 h per complete drawing
Order scale
Prototype → batch production, worldwide shipping
Product Categories

Engineered glass parts for lasers, optics & semiconductors

Featured parts from our current production. Hover a card to see the key specification buyers ask us about most; every dimension can be adapted to your drawing.

Browse all product families

Tianjin BY Photonics production workshop for quartz and optical glass
15+years manufacturing
precision glass since 2010
About BY Photonics

A glass-processing partner that engineers, not just cuts

Founded in 2010 in Tianjin, China, BY Photonics has spent more than fifteen years on one discipline: turning hard, brittle optical materials into parts that perform inside lasers, analytical instruments, medical devices and semiconductor tools.

We combine material supply and custom processing in a single workflow, so OEM buyers and R&D teams get one-stop sourcing — material selection advice, machining, flame working, inspection and export packing — with one-on-one engineering support from first drawing to repeat orders.

0+

Engineers, technicians & skilled operators

0+m²

Standardized production workshop

0+

Processing machines: grinding, polishing, CNC, flame & drawing

0+

Inspection & testing instruments for dimensional and optical QC

Processing Capacity

Four in-house process chains, one traceable workflow

Select a stage to see how each process is applied and the parameters our engineers typically hold. Combining stages in-house removes hand-offs between subcontractors — the most common cause of tolerance drift.

Precision glass grinding and polishing of fused silica plates

Grinding & Polishing

High-accuracy flat components — windows, plates, substrates and light guides — in fused silica, sapphire, borosilicate and optical glass. Standard sizes are stocked; custom geometries are lapped and polished to your print.

Flatness
Up to λ/10
Surface quality
To 20-10 S-D
Typical parts
Windows, wafers, IPL blocks
Options
AR coating, chamfers
View quartz plates & windows
Why Buyers Choose Us

Right material, right process, documented quality

Choosing the wrong grade is the most expensive mistake in optical glass sourcing. Use the reference guide below, then let our engineers confirm the best fit for your wavelength, temperature and budget.

Material expertise icon

Material Expertise

Fused silica, fused quartz, borosilicate, optical, IR and color filter glass, plus sapphire — sourced and processed in-house.

Customization icon

Built to Your Drawing

Every part is produced strictly to your specification, with DFM feedback before production starts.

Service icon

One-Stop Service

Full product categories and multiple processes, so complex assemblies don't bounce between suppliers.

Quality control icon

Quality & On-Time Delivery

End-to-end inspection with 20+ instruments and export-grade packing for safe global transit.

Optical material selection guide
MaterialTransmission (approx.)Max. service temp.Typical BY parts
JGS1 fused silicaUV grade · synthetic185 – 2,500 nm~1,100 °CUV windows, cuvettes, laser optics
JGS2 fused quartzVisible / UV grade220 – 2,500 nm~1,100 °CFlow tubes, sight glass, quartzware
JGS3 fused quartzIR grade · low OH260 – 3,500 nm~1,100 °CIR windows, heater components
Borosilicate glassLow expansion350 – 2,500 nm~450 °CCapillaries, rods, cover windows
Sapphire (Al₂O₃)Mohs 9 · crystal170 – 5,500 nm~1,800 °CIPL light guides, wear windows

Values are typical reference data for initial selection. Material certificates and inspection reports are available with orders on request.

Applications

Where our glass components perform

Glass components for medical lasers
APP / 01

Medical Lasers

Flow tubes, filters and reflectors that keep pump cavities stable in surgical and dermatology lasers.

  • Sm-doped tubes
  • Ceramic reflectors
  • UV-block quartz
Explore components
Glass components for optical communication and fiber optics
APP / 02

Fiber Optics

Capillaries and ferrule blanks with tight ID control for fibre alignment and splicing.

  • Quartz capillaries
  • F-doped capillaries
Explore components
Glass and quartz parts for semiconductor assemblies
APP / 03

Semiconductor Assemblies

Quartzware and glass substrates for packaging, wafer-level processes, optical and MEMS packaging.

  • Wafer carriers
  • Diffusion boats
  • Substrates
Explore components
Glass products for optical instruments
APP / 04

Optical Systems

Windows, prisms and filters for imaging, spectroscopy and metrology instruments.

  • UV windows
  • Laser optics
  • Filter glass
Explore components
Glass products for industrial lasers
APP / 05

Industrial Lasers

Pump cavity flow tubes, flow plates and diffuse reflectors for high-duty-cycle cutting and marking lasers.

  • Flow plates
  • PTFE reflectors
Explore components
Glass components for biomedical and medical equipment
APP / 06

Biomedical & Medical Equipment

Cuvettes, flow cells and IPL light guides for diagnostics and aesthetic devices.

  • Flow cells
  • IPL light guides
Explore components
Glass products for university and research laboratories
APP / 07

Laboratory & Research

Small-batch custom parts for university labs and research centres, from one-off prototypes upward.

  • Custom cuvettes
  • Quartz chambers
Explore components
Fused silica and borosilicate glass for heat-resistant equipment
APP / 08

Heat-resistant Equipment

Fused silica and borosilicate parts that survive thermal shock in furnaces and high-temperature viewports.

  • Sight windows
  • Quartz tubes
Explore components
Glass materials for microfluidic devices
APP / 09

Microfluidic Devices

Chemically inert glass chips, capillaries and substrates with micro-channel compatible surfaces.

  • Substrates
  • Micro capillaries
Explore components
Glass products for aerospace and avionics
APP / 10

Aerospace & Avionics

Sapphire and fused silica windows for sensors and displays exposed to abrasion and wide temperature swings.

  • Sapphire windows
  • Sensor covers
Explore components
Engineering Insights

Technical notes from our production floor

Visit the blog
Hot-processed quartz glass components
Hot Working

Hot-Processed Quartz Glass Components and Applications

How flame-worked quartz boats serve as core carriers for wafer transfer and baking — and what defines a reliable weld.

Read article
Laser ceramic cavities used in laser pump chambers
Laser Cavities

Advantages of Laser Ceramic Cavities in the Laser Field

Why ceramic reflector cavities outperform metal-coated designs in reflectance stability and service life.

Read article
Transmittance curve of JGS1 UV-grade fused silica plate
Materials

JGS1 vs JGS2 vs JGS3: Choosing the Right Quartz Glass

A practical guide to the three Chinese quartz grades by spectral range, OH content and typical application.

Read article
Buyer FAQ

Answers before you send a drawing

Short, factual answers to the questions procurement and engineering teams ask us most often.

Ask an Engineer
Which glass and crystal materials can you machine?
JGS1 UV fused silica, JGS2 and JGS3 fused quartz, borosilicate, optical glass, optical color filter glass, infrared glass, samarium- and cerium-doped glass, sapphire, PTFE-based diffuse reflector material and laser ceramics.
What is the difference between JGS1, JGS2 and JGS3?
JGS1 is synthetic UV-grade fused silica transmitting from about 185 nm. JGS2 is fused quartz for visible use with good UV transmission from about 220 nm. JGS3 is low-OH infrared-grade quartz that transmits up to about 3,500 nm. Our engineers will recommend a grade based on your wavelength and environment.
Which drawing formats should I send?
STEP, IGES, DWG, DXF or a dimensioned PDF. Please state material, quantity, critical tolerances, surface quality, coating needs and the operating environment so we can assess manufacturability in one pass.
How quickly will I receive engineering feedback?
For complete drawings, we return a process feasibility assessment within 24 hours on working days, including any suggested tolerance or material adjustments.
Do you support prototypes and worldwide shipping?
Yes. We handle prototype and low-volume orders as well as repeat batch production, with export-grade packing and delivery to customers across the globe. See our Global Service page for details.
Engineer Channel

Send your drawing. Get a process feasibility review in 24 hours.

Skip long forms. Email your CAD or PDF directly to our engineering desk — a process engineer, not a sales script, replies with manufacturability notes and a recommended route.

  • 01Send STEP / IGES / DWG / DXF / PDF with material and quantity
  • 02Engineer reviews tolerances, material grade and process route
  • 03Receive a feasibility assessment within 24 working hours
Contact Engineering Request a Catalog
Drop CAD / PDF Drawings STEP · IGES · DWG · DXF · PDF Attach your files and send to [email protected]