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High Precision Custom Bandpass Optical Filter, OD4 OD5 OD6 Blocking For Fluorescence & Laser Equipment

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Categories	Longpass Shortpass Filters
Brand	FELIX GLASS optical glass Manufacturing base
Model	FG-BANDPASS-OD-SERIES
Substrate Material	Optical glass / JGS1 fused silica customizable substrate
Blocking Grade	OD4, OD5, OD6 optional deep blocking for stray light suppression
Customizable Spec	Custom center wavelength, round/square size, thickness, edge chamfer
Application	Fluorescence analyzer, machine vision, laser equipment, spectral detection instrument
FOB port	SHENGZHEN SHANGHAI GUANGZHOU
Terms of Payment	L/C, D/A, D/P, Western Union, MoneyGram, T/T
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High Precision Custom Bandpass Optical Filter With OD4 OD5 OD6 Blocking

Felix Glass high-precision bandpass filter adopts optical glass or fused silica as substrate, coated with multi-layer interference film to realize single band light transmission, all stray light outside target wavelength can be deeply blocked with OD4, OD5 or OD6 optional grade.

OD value represents optical density; higher OD means stronger stray light shielding performance. OD6 ultra-deep blocking can suppress stray light transmittance below 0.0001%, perfectly meet the demand of weak signal detection such as fluorescence. We support fully customized center wavelength, diameter, square size, thickness and edge chamfer, ultra-precision polishing ensures flatness and parallelism for high-end optical equipment.

Core Optical Specifications

- Optional Blocking Grade: OD4, OD5, OD6

- Target Band Transmittance: ≥85%~92% customizable

- Blocking Transmittance: OD4 ≤0.01%, OD5 ≤0.001%, OD6 ≤0.0001%

- Custom Wavelength: 365nm, 405nm, 532nm, 633nm, 850nm, 940nm etc.

- Surface Quality: 20-10 / 60-40 scratch-dig aerospace & industrial grade

- Shape: Round, square, rectangle, special irregular outline OEM

Core Product Advantages

1. Three deep blocking grades OD4/OD5/OD6 for selection, ultra-low stray light interference

2. Custom arbitrary center wavelength, match laser, fluorescence, machine vision different working bands

3. High transmittance in passband, reduce light energy loss and improve detection sensitivity

4. High precision polishing, low surface defect, stable coating adhesion, long service life

5. Two substrate options: optical glass and UV-transmittable fused silica

6. Small lab sample order and mass industrial batch supply both acceptable

Typical Application Scenarios

- Biochemical fluorescence analyzer, nucleic acid detection equipment

- Industrial machine vision positioning, defect detection, barcode reading

- Laser ranging, laser marking, laser safety optical window

- Laboratory Raman, FTIR, spectrophotometer spectral testing

- Medical optical detection, microscopic imaging system

- Infrared sensor, optical measuring instrument

OEM Manufacturing Capability

We provide full one-stop processing including blank double-sided ultra-precision polishing, multi-layer vacuum bandpass film coating, spectral transmittance testing, edge chamfer and dust-free packaging. Custom wavelength and blocking depth are supported, complete spectral test report will be provided for each batch of filters.

Standard FAQ

1. What’s the difference between OD4, OD5 and OD6 bandpass filter?

OD value is optical density, higher OD blocks stray light more thoroughly. OD6 is suitable for ultra-precise weak fluorescence detection.

2. Can I customize non-standard center wavelength?

Yes, we can customize bandpass filters for any wavelength from UV to near infrared according to customer drawings.

3. What substrate to choose for UV bandpass filter?

Select JGS1 fused silica substrate, ordinary optical glass cannot transmit deep UV light.

4. What shapes can bandpass filters be made into?

Round, square, rectangular and special irregular shapes are all available for OEM customization.

5. Do you supply small quantity samples for R&D testing?

We accept 1 piece small sample order and provide full spectral performance inspection data.

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Learn more from our FAQ

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.