BBP-905 Bandpass Filter
BBP-905 isolates the 905 nm channel with ~92–95 % peak transmission and near-baseline leakage across VIS–NIR—ideal for ranging, beacons, and outdoor IR systems.
- Peak transmission: ~92–95 % T near 905 nm
- Band edges: Steep cut-on/cut-off around ~850–950 nm
- Out-of-band: ~0–2 % T across 300 – 850 nm and 960 – 1050 nm
- SWIR tail: ~10–15 % T by ~1200 nm (optional extra blocking)
- Ghost control: Optional rear AR and slight wedge available
- Substrates: Borofloat®, Eagle XG, D263 T (≤ 450 °C), soda-lime (≤ 150 °C)
- Size / thickness: 5 – 450 mm • 0.21 – 3.8 mm (custom cut & dicing)
Learn more
BBP-905 is a near-infrared bandpass centred on 905 nm, delivering a high
transmission window (~92–95 %) with steep edges that rapidly suppress out-of-band light.
Outside the passband, transmission remains close to baseline (~0–2 %) across most of the
visible and near-IR (300–850 nm and ~960–1050 nm), improving contrast and reducing
sensor bloom under mixed illumination.
One note for SWIR-sensitive detectors: transmission can rise again beyond ~1100 nm and reach
~10–15 % by ~1200 nm. If your system responds in that range, KUPO can add an
additional blocking stack to fully suppress the tail.
Typical uses: 905 nm illumination for machine vision, time-of-flight and ranging,
IR beacons/tracking, reflectance/absorption photometry, and industrial inspection where a
clean 905 nm channel is required. KUPO supplies rear-surface AR, slight wedge, and rapid
custom cutting—from small test chips to 450 mm plates—on high-temperature glass
(Borofloat®, Eagle XG, D263 T) or economical soda-lime.
Description
The BBP-905 is a near-infrared filter centered at 885 nm with a 67 nm FWHM passband (868-935 nm). Peak transmission reaches 94.5 %. This filter is optimized for 905 nm LiDAR and proximity detection applications, with exceptional visible blocking (all visible bands < 1.5 %) and clean NIR isolation. The narrow visible rejection makes BBP-905 ideal for daylight-robust sensing in autonomous vehicles and robotics.
Key Advantages
- Exceptional visible blocking – All visible wavelengths plunge below 1.5 % transmission - immune to ambient daylight interference
- 905 nm LiDAR optimized – 67 nm FWHM centered at 885 nm aligns perfectly with 905 nm time-of-flight and structured-light systems
- Hard-oxide dichroic durability – Ion-assisted multilayer coating withstands automotive thermal cycling and harsh environmental conditions
- Custom blank flexibility – Round, square, and free-form options from 5 mm to 450 mm with thickness 0.21-3.8 mm
- Substrate diversity – Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG accommodate diverse optical designs
Typical Applications
- 905 nm LiDAR systems – Time-of-flight and structured-light 3D sensing for autonomous vehicles and robotics
- Daylight-robust sensing – Proximity detection and obstacle avoidance immune to sunlight and ambient illumination
- Industrial sensing – Material detection and distance measurement at 905 nm in harsh manufacturing environments
- Scientific research – NIR photometry and spectroscopic analysis in 900-950 nm window
- Mobile robotics – Real-time navigation and environmental perception in autonomous mobile systems
Integrate BBP-905 into your LiDAR and proximity sensing system with rapid custom manufacturing. Supports everything from prototype evaluation to high-volume automotive deployment.
FAQ
BBP-905 FAQ
What is BBP-905 and what is it used for?
BBP-905 is a Clean 905 nm bandpass for LiDAR and proximity sensing. The BBP-905 is a near-infrared filter centered at 885 nm with a 67 nm FWHM passband (868-935 nm). Peak transmission reaches 94.5 %. Common uses include 905 nm LiDAR systems, Daylight-robust sensing, Industrial sensing, and Scientific research.
What are the key optical specs of BBP-905?
Key published specs for BBP-905 include Centre wavelength (CWL): 901.4 nm; Bandwidth (FWHM): 68.5 nm; Peak transmittance: ≥ 94.5 % T; Passband range: 867 – 936 nm; Edge steepness: ~17 nm (10 → 90 % per edge).
What applications is BBP-905 best suited for?
BBP-905 is commonly used for 905 nm LiDAR systems, Daylight-robust sensing, Industrial sensing, and Scientific research. 905 nm LiDAR systems - Time-of-flight and structured-light 3D sensing for autonomous vehicles and robotics.
Can BBP-905 be customized for size, substrate, or coating requirements?
KUPO lists the construction for BBP-905 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include CWL shifting, bandwidth tuning, custom blocking ranges, rapid prototypes. Custom blank flexibility - Round, square, and free-form options from 5 mm to 450 mm with thickness 0.21-3.8 mm.
What should I know about angle of incidence and durability for BBP-905?
The published angle of incidence for BBP-905 is 0° (normal incidence); custom angles available. The hard-oxide coating is built for repeated handling, heat, and cleaning.
