Name: Laser Line Filters
Brand: Peoptix

Laser Line Filters

Peoptix high-precision laser line filters are narrow bandpass optical filters designed to transmit specific laser wavelengths while blocking stray light and unwanted spectra. Featuring dielectric hard coating, high optical density, and tight spectral tolerance, they deliver stable performance for laser instrumentation, imaging, and industrial optical systems with full customization available.

Description

Key Advantages

Narrow passband with steep edges isolates the target laser line and suppresses stray light.
High peak transmittanceminimizes in-band light loss.
Deep out-of-band blocking across a broad range.
Hard dielectric coating: humidity-stable, long-term spectral stability.
Tight CWL tolerance with low temperature and angle shift.
Customizable substrate, diameter, bandwidth, blocking range and incident angle.

Substrate Material Properties

Parameter	H-K9L ( N-BK7)	JGS1 Fused Silica	Sapphire ( Al₂O₃)
Transmission Range	350-2000 nm	185-2500 nm	170-5500 nm
Refractive Index @632.8 nm	1.5168	1.457	no 1.75 / ne 1.74
Density (g/cm3)	2.51	2.20	3.97
CTE	7.1	0.55	5.6
Thermal Conductivity (W/m·K)	1.1	1.38	27.21
Main Filter Advantage	Cost-effective, general VIS-NIR	Low CTE, UV-grade, high-power tolerant	High hardness, high thermal conduction, harsh env.

Processing Specifications

Parameter	Regular	High Precision
Substrate Options	H-K9L /JGS1 / Sapphire	H-K9L /JGS1 / Sapphire
Diameter (Φ) Tolerance	±0.1 mm	±0.02 mm
Thickness Tolerance	±0.1 mm	+0 / -0.01 mm
Surface Flatness (PV)	λ/4 @632.8 nm	λ/10 @632.8 nm
Parallelism	<1′	<30″
Surface Quality	60-40	40-20
Coating Type	Hard dielectric, ion-assisted	Hard dielectric, IBS
Clear Aperture	>90%	>95%
Operating Temperature	−40 to +85 °C	−40 to +105 °C

Application Fields

Raman and fluorescence spectroscopy
Confocal and fluorescence microscopy
Laser cutting, welding and marking (sensor / camera protection)
Machine vision and 3D laser triangulation
Fiber communication and LiDAR (1550 nm)
Laser safety and eye protection

Laser Line Filters

Description

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