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Home / LiDAR Optical Window: 905nm & 1064nm High-Transmission Glass for LiDAR

LiDAR Optical Window: 905nm & 1064nm High-Transmission Glass for LiDAR

LiDAR Optical Window: 905nm & 1064nm High‑Transmission Glass for LiDAR

Improper LiDAR window material selection causes low infrared transmittance, signal attenuation, outdoor scratch failure, and early weathering aging. For automotive ADAS, autonomous robots, and industrial LiDAR sensors, optical window substrate and coating directly determine detection accuracy and service life. This page provides engineer‑level performance parameters, material comparison, and clear selection guidelines for LiDAR optical windows.

1. LiDAR Window Core Material Overview

Fused Silica LiDAR Window features ultra-high IR transmittance at 905nm and 1064nm, extremely low thermal expansion, and high laser damage resistance. It is the best choice for high-sensitivity LiDAR detection and continuous industrial operation.

Sapphire LiDAR Window offers Mohs 9 extreme hardness, outstanding scratch resistance, and superior outdoor weatherability. It is widely used for vehicle-grade long-term outdoor LiDAR working environments.

2. Full Performance Comparison Table

Parameter	Fused Silica	Sapphire	Engineering Recommendation
905nm IR Transmittance	>92%	>85%	Fused silica for higher LiDAR sensitivity
Mohs Hardness	5.5–6	9	Sapphire for anti-scratch outdoor use
Thermal Stability	Excellent	Good	Fused silica for temperature-variable environments
Weather Resistance	Good	Superior	Sapphire for 5+ year outdoor service
Cost & Mass Production	Cost-effective	High cost	Fused silica for batch projects

3. Material Selection Guide (Quick Decision Table)

Project Requirement	Best Material
High-precision LiDAR detection (max signal)	Fused Silica
Cost-sensitive mass production LiDAR	Fused Silica
Vehicle-grade outdoor long-term operation	Sapphire
Dust, sand, scratch-prone environment	Sapphire

4. Technical Specifications

Specification	Standard Range	Custom Available
Diameter / Dimension	5mm – 150mm	Yes, per drawing
Thickness	0.5mm – 10mm	Yes
Surface Quality	60/40 to 10/5	Laser grade available
Flatness	λ/4 to λ/10 @ 633nm	Yes
Parallelism	<30 arcsec to <5 arcsec	Yes
Working Wavelength	905nm / 1064nm / dual-band	Custom band coating

5. Application Scenarios

Automotive ADAS LiDAR sensor windows
Industrial robot navigation LiDAR
Smart device and AGV laser detection windows
Outdoor high-stability laser ranging systems

6. Coating Solution

Coating Type	Wavelength	Typical Reflectance	Application
Single-band AR	905nm	<0.5% per surface	Standard LiDAR ranging
Single-band AR	1064nm	<0.5% per surface	1064nm LiDAR systems
Dual-band AR	905nm & 1064nm	<1% per surface	Multi-wavelength LiDAR
Hydrophobic / AF coating	Broadband	—	Outdoor anti-fingerprint, anti-dust

7. FAQ

Q: Which material is best for 905nm LiDAR?
A: Fused silica provides higher infrared transmittance for more stable detection; sapphire is selected for vehicle outdoor durability and scratch resistance.

Q: Does LiDAR window need AR coating?
A: Yes. Professional AR coating reduces surface reflection from ~4% to below 0.5% per surface, greatly improving ranging accuracy and signal-to-noise ratio.

Q: What is the typical lead time for custom LiDAR windows?
A: Standard sizes: 7–10 business days. Custom dimensions with special coating: 15–25 business days, depending on quantity and specification.

Q: Can you provide samples before mass production?
A: Yes. We offer prototype samples for material and coating verification before batch orders. Sample cost is refundable upon bulk order confirmation.

8. Custom Manufacturing & Request a Quote

Hong Kong Felix Optical Glass Co., Limited provides custom LiDAR optical windows with customized size, thickness, flatness, parallelism, and professional LiDAR band anti-reflection coatings for autonomous and industrial laser systems.

Available custom capabilities:

Custom dimension: diameter, thickness, round / square / special-shape windows
Surface quality: industrial grade to laser-grade surface finish
Optical coatings: 905nm / 1064nm single or dual-band AR coatings, hydrophobic AF coating
Strict dimensional tolerance, parallelism, flatness per customer drawing requirements

Request a Quote for LiDAR Window

Email: james@felixglass.com | Tel: +86 185 6503 2888

Sales Director James Fu from Felix Glass, contact info poster for optical glass deep‑processing factory

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.

CONTACT US NOW FOR A QUOTE

Send an inquiry now—we will respond promptly within 1–24 hours and provide our best formal quote within 1–2 days! Let’s start a mutually beneficial partnership today...

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