Filters & Components Manufacturer & Wholesale Supplier
Custom optical filters and precision components — windows, mirrors, lenses, prisms, beamsplitters, bandpass/dichroic/ND filters — machined and coated in-house to ISO9001 with ZYGO interferometer verification.
The Filters & Components Line from the Factory
The Optical Component Line Behind the Consumer Brand
Hemusun's oldest business is custom optical components: windows, mirrors, lenses, prisms, beamsplitters and filters machined and coated to customer drawings. We have produced 5,000+ distinct lens types over more than a decade, with 60%+ of front-line technicians holding 10+ years of optical machining experience. Verification runs on ZYGO and VECCO interferometers, spherical-diameter meters and Shimadzu spectrophotometers, so surface accuracy and coating curves are measured, not assumed.
The workflow covers the whole chain in-house: rough and fine grinding, polishing, core taking, coating, gluing, blackening, cleaning, assembly — with ISO9001-controlled milestones at each transfer. Buyers get component traceability that most trading-company suppliers simply cannot provide.
Filter Types We Manufacture
Bandpass and dichroic (longpass/shortpass) interference filters for sensing and machine vision; neutral density and graduated density for photography; special-effect filters for the creative retail market — wire-drawing, black-mist and fireworks filters, which turn point light into starbursts, soften highlight bloom, and stretch lights into filaments; plus solar filters for astronomy kits and UV/protection filters for instrument windows. Coating design is per-application: center wavelength, half-band, OD blocking and transmission bands come from your spec sheet or from a joint definition call.
How a Custom Optics Quote Actually Runs
Send a drawing — or a paragraph. A functional description ('block 532 nm pump, pass 850 nm, uncoated back surface, 25 mm square, 500 pieces') is enough to start; we will return coating design questions, a tolerance proposal, and a sample plan. Prototypes on standard substrates run one to two weeks; coating campaigns on custom designs follow the next available coater slot. NRE and volume price break points are quoted up front, so a pilot-to-production ramp is a spreadsheet conversation, not a renegotiation.
Need a recommendation?
Send us your application and we will match the right platform, configuration and price tier.
Request a Quote WhatsAppFrequently Asked Questions
What do you need to quote a custom filter?
A drawing, or a functional paragraph: wavelengths to block and pass, substrate and size, quantities. We return a coating design proposal, tolerance plan and sample schedule.
What verification data comes with components?
Interferometer surface maps, coating transmission/reflection spectra and dimensional reports on the production lot — the same data we use for internal release, because buyers' audits and ours should read the same numbers.
What lead times run for custom optics?
Prototypes on standard substrates typically run one to two weeks; custom coating campaigns follow coater slots (typically two to four weeks). Volume price breaks and NRE are quoted up front.
What industries use your components?
Industrial machines, semiconductors, medical devices, astronomy, aerospace, infrared night vision, laser technology and environmental monitoring — the component lines behind instruments in each of those fields.
Tell us the market. We will spec the optics.
Platforms, price tiers, MOQ and samples — an answer from the factory within one business day.