780 nm Cut-On
Designed for projects that require IR pass behavior near 780 nm and reduced visible-light interference.
RG780 HWB780 Black Longpass Filter | 780nm IR Pass Visible Light Cut Optical Glass Filter
group nameLongpass Shortpass Filters
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Min Order1 piece
brand nameFELIX GLASS optical glass Manufacturing base
modelFG-RG780 / HWB780
payment methodL/C, D/A, D/P, Western Union, T/T
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update timeSat, 18 Jul 2026 15:02:30 GMT
Paramtents
Material Colored Black Optical Glass
Model RG780 / HWB780
Standard Thickness 1.92 mm (measured), 1.0mm / 2.0mm / 3.0mm optional
Shape Round disc, Square plate, Custom blank
Surface Quality 60/40 standard, 40/20 high precision available
Edge Finish Fine ground / Polished
Coating Uncoated standard, AR anti-reflection coating optional
Color Opaque black under visible light
Application IR photography, machine vision, infrared sensor, optical instruments
Brand Felix Glass
Custom Service OEM, ODM, cutting & polishing per drawing
Packging & Delivery
Weight0.25kg / piece
Min Order1 piece
Briefing
Custom RG780 / HWB780 black longpass optical glass filter for 780nm IR pass, visible light cut and OEM filter blanks.
Detailed
Felix Glass Co., Limited supplies custom RG780 / HWB780 black longpass optical glass filters for systems that need visible light cut-off and near infrared transmission from the 780 nm range. The original product direction is retained: colored black optical glass, round disc or square plate processing, 1.92 mm measured standard thickness, optional custom thickness, fine edge finishing, and OEM cutting and polishing from drawings. RG780, also called HWB780, is a black colored absorption optical glass filter. It is used to absorb visible light below the cut-on region while allowing useful near infrared light to pass for cameras, sensors, optical experiments, and machine vision modules. The filter appears opaque black under ordinary visible light, helping isolate near infrared signals. Diameter, length, width, thickness, edge finish, and coating can be reviewed from customer drawings. Confirm size, thickness, tolerance, edge treatment, coating, and optical working band. Match RG780 / HWB780 stock or custom sheet preparation to the order requirement. Process round wafers, square blanks, rectangles, or custom shapes with controlled edge quality. Finish surfaces and add optional IR AR coating when the application needs lower reflection. Check dimensions, visual quality, surface defects, and safe packing before shipment. A 780 nm longpass filter helps separate near infrared signal from visible illumination. It is useful when the camera, sensor, or detector should respond mainly to IR light while suppressing ordinary visible wavelengths. Felix Glass supports small prototype batches and drawing-based OEM quantities for US-market and global B2B optical projects. Used where the optical path needs near infrared response with visible-light reduction. Supports IR illumination, sensor testing, and inspection systems that need defined wavelength separation. Suitable for instruments, student laboratories, prototype fixtures, and optical test assemblies. Custom RG780 / HWB780 filter orders are reviewed around the final assembly requirement. A practical inspection plan can include dimension checks, surface appearance, edge quality, visual blackness, and packaging protection. Diameter, side length, thickness, bevel, and shape tolerance are checked against the drawing. Scratch-dig level, chips, stains, and coating appearance can be reviewed before packing. Transmission direction and coating requirement are discussed according to the wavelength target. Your system needs a black visible-cut filter with near infrared pass behavior around 780 nm. The cut-on wavelength should shift to RG665, RG695, RG830, or another longpass design direction. The system requires sharper edge control, OD targets, AR coating, or multi-layer interference coating. Share drawings, dimensions, thickness, quantity, wavelength requirement, surface quality, coating request, and assembly use. Material feasibility, processing route, edge finish, tolerance, coating option, inspection scope, and packing method. A custom quotation direction, production feasibility feedback, and order support for samples or batch production. Yes. Round discs, square plates, rectangles, and custom shapes can be reviewed from drawings. Uncoated glass is standard. IR anti-reflection coating can be discussed when reflection control is important. Yes. The current reference includes 1.92 mm measured thickness, with 1.0 mm, 2.0 mm, 3.0 mm, and custom options available by review. Provide drawing, size, tolerance, thickness, quantity, application, wavelength target, and coating needs. Use these internal pages to compare nearby optical filter choices before confirming the RG780 / HWB780 black longpass filter specification.
Attention stage
Custom RG780 HWB780 Product Overview
780 nm IR pass filter
Visible light absorbing glass
Custom round or square blanks
Direct answer
Core Material and Optical Properties
Black Visible Appearance
Drawing-Based Processing
Interest stage
Custom Size and Technical Specifications
Product model FG-RG780 / HWB780 black longpass filter Material Colored black optical glass for visible-light absorption and near infrared pass applications Cut-on reference 780 nm longpass direction, with working range reviewed by material batch and project requirement Standard thickness 1.92 mm measured reference; 1.0 mm, 2.0 mm, 3.0 mm and custom thickness can be discussed Shape Round disc, square plate, rectangle blank, or custom CNC shape Surface quality 60/40 standard, 40/20 high precision available when the application requires tighter optical quality Edge finish Fine ground or polished edge according to assembly and handling needs Coating Uncoated standard, optional IR anti-reflection coating by wavelength and incident-angle review
Manufacturing workflow
Professional Manufacturing Workflow
Drawing Review
Material Selection
Cutting and Grinding
Polishing and Coating
Inspection and Packing
Visible cut and IR pass
Why Choose a 780nm IR Pass Visible Light Cut Filter
Application fit
Typical Applications for RG780 HWB780 Black Optical Glass
IR Photography and Camera Modules
Machine Vision and Sensors
Optical Instruments and Labs
Desire stage
Quality Control for Custom Longpass Optical Filters
Dimension Control
Surface Review
Optical Direction
Selection support
8 Matching Optical Components and Material Resources
Choose RG780 / HWB780 When
Review Other Longpass Glass When
Review Coated Filters When
Action stage
9 Custom OEM / ODM Service and Engineering Support
What to Send
What Felix Glass Reviews
What Buyers Receive
Buyer FAQ
10 FAQ About Custom RG780 HWB780 Filters
Can Felix Glass cut non-standard diameters?
Is AR coating available?
Can the thickness be customized?
What details help speed quotation?
Cross-link guide
11 Related Longpass, Shortpass, Bandpass and Optical Filter Pages
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