AR2S-RNIR-01 Anti-Reflective (AR) Coating (Both Side)
Broadband multi-layer (BBAR) anti-reflection coating minimising surface reflections across red-nir wavelengths (600 – 1000 nm) for maximum throughput and ghost-free optical performance.
- Coating type: Broadband multi-layer (BBAR) (double-side coated)
- Design waveband: 600 – 1000 nm
- Average reflectance (Ravg): < 0.85 % per surface
- Peak reflectance: < 1.69 % (worst case in waveband)
- Resulting transmittance: ≥ 98.3 % T (both surfaces coated)
- AOI: 0° (normal incidence); performance degrades gradually at higher angles
- Substrate: Borofloat® or customer-specified glass
- Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
- Custom options: Wavelength range tuning, V-coat for single wavelength, custom substrates, rapid prototypes
Learn more
AR2S-RNIR-01 AR delivers Coating type Broadband multi-layer (BBAR) (double-side coated), Design waveband 600 – 1000 nm, and Average reflectance (Ravg) < 0.85 % per surface.
The hard-oxide coating is built for repeated handling, heat, and cleaning.
Best suited for:
NIR imaging and sensing systems — including LIDAR receivers, range finders, and night-vision optics — where surface reflections in the red and near-infrared range reduce detector sensitivity and introduce stray light
Description
AR2S-RNIR-01 is a double-side broadband anti-reflection coating optimized for the red through near-infrared range, covering 625 nm to 900 nm. Average transmission exceeds 98.2 % across this window, with peak values reaching 99.5 % near 937 nm. The near-infrared plateau holds T > 99 % from 801 nm to 961 nm, making this coating an exceptional choice for NIR sensing and imaging. Transmission climbs above 95 % from 414 nm onward, so visible wavelengths also benefit, though peak performance is clearly centred on the red-to-NIR region.
Key Advantages
- Tavg > 98.2 % across 625-900 nm - delivers near-zero reflective loss in the red and NIR bands most critical for silicon-sensor imaging and NIR sensing.
- Peak transmission of 99.5 % at 937 nm - places best performance at the heart of the NIR sensing band used by LiDAR, proximity sensors, and spectroscopy.
- NIR plateau with T > 99 % from 801-961 nm - provides an ultra-flat, high-throughput window for 850 nm and 905 nm emitters.
- Hard-oxide durability - ion-assisted deposition creates a coating resistant to heat, humidity, solvents, and repeated cleaning.
- Custom formats available - round, square, or free-form blanks from 5 mm to 450 mm, thickness 0.21-3.8 mm, on Borofloat®, soda-lime, Schott D263 T, or Corning Eagle XG substrates.
Typical Applications
- LiDAR and time-of-flight sensors - maximizes signal return at 850 nm and 905 nm, the two dominant emitter wavelengths in automotive and industrial ranging.
- NIR spectroscopy and process analytical technology (PAT) - provides a lossless window for analysing moisture, protein, and chemical composition in the 700-900 nm region.
- Night-vision and surveillance imaging - passes NIR illumination (850 nm LEDs) with minimal loss while maintaining red-channel imaging capability.
- Biomedical imaging and pulse oximetry - transmits the 660 nm (red) and 850-940 nm (NIR) wavelengths used in blood-oxygen measurement and optical coherence tomography (OCT).
- Fibre-optic communication windows - supports short-reach data links operating at 850 nm VCSEL wavelengths with maximum coupling efficiency.
Need a prototype in days or volume coatings next quarter? KUPO Optics can coat, dice, and ship AR2S-RNIR-01 to your exact size, shape, and substrate specifications.
FAQ
AR2S-RNIR-01 FAQ
What is AR2S-RNIR-01 and what is it used for?
AR2S-RNIR-01 is an Anti-Reflective optical product. Broadband multi-layer (BBAR) anti-reflection coating minimising surface reflections across red-nir wavelengths (600 – 1000 nm) for maximum throughput and ghost-free optical performance. Common uses include NIR imaging and sensing systems — including LIDAR receivers, range finders, and night-vision optics — where surface reflections in the red and near-infrared range reduce detector sensitivity and introduce stray light.
What are the key optical specs of AR2S-RNIR-01?
Key published specs for AR2S-RNIR-01 include Coating type: Broadband multi-layer (BBAR) (double-side coated); Design waveband: 600 – 1000 nm; Average reflectance (Ravg): < 0.85 % per surface; Peak reflectance: < 1.69 % (worst case in waveband); Resulting transmittance: ≥ 98.3 % T (both surfaces coated).
What applications is AR2S-RNIR-01 best suited for?
KUPO lists the best-suited applications as NIR imaging and sensing systems — including LIDAR receivers, range finders, and night-vision optics — where surface reflections in the red and near-infrared range reduce detector sensitivity and introduce stray light.
Can AR2S-RNIR-01 be customized for size, substrate, or coating requirements?
KUPO lists the construction for AR2S-RNIR-01 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Wavelength range tuning, V-coat for single wavelength, custom substrates, rapid prototypes.
What should I know about angle of incidence and durability for AR2S-RNIR-01?
The published angle of incidence for AR2S-RNIR-01 is 0° (normal incidence); performance degrades gradually at higher angles. The hard-oxide coating is built for repeated handling, heat, and cleaning.
