Laboratory Light Splitting
Experimental optical paths for refraction, beam separation, and alignment work.
✔ OEM / ODM Customization
✔ Free Drawing DFM Technical Review
✔ 24-Hour Professional Quotation
✔ Flexible Low MOQ & Fast Prototypes






Felix Glass Co., Limited supplies precision-ground and polished long rectangular triangular prisms for laboratory light splitting, optical measuring instruments, teaching equipment, industrial optical detection, and spectroscopy test platforms. The original product scope is retained: N-BK7 optical glass, optional custom AR coating, drawing-based length and cross-section size, controlled optical tolerances, and a three-year warranty.


A long triangular measuring prism is an optical glass component with a triangular cross section extended along its length. Its polished faces can refract, redirect, or split light in laboratory and instrument setups. Unlike a catalog prism with one fixed size, this product can be reviewed against the required length, cross-section geometry, working wavelength, surface quality, flatness, angular tolerance, and coating.
For an accurate quotation, provide a drawing and identify which faces are optical, coated, referenced for angle control, or mechanically mounted.
The original specifications remain in their existing sequence and should be confirmed on the approved production drawing.
| Material | N-BK7 optical glass | Prism type | Long rectangular triangular optical prism |
|---|---|---|---|
| Optional coating | Custom AR anti-reflection coating | Surface quality | 20/10; 60/40 optional |
| Surface flatness | 1/8 wave at 633 nm | Clear aperture | At least 80% of the central area |
| Angular tolerance | Up to plus or minus 3 arc minutes | Customization | OEM, ODM, and OBM custom length and cross-section size |
| Warranty | 3 years | Origin | Guangdong, China |
Experimental optical paths for refraction, beam separation, and alignment work.
Measuring and calibration equipment built around a defined prism geometry.
Physical optics demonstrations in school, university, and training laboratories.
Custom prism integration in inspection and optical detection systems.
Test assemblies used for spectral analysis and optical research.


The long format makes dimensional coordination important. A useful drawing defines overall length, triangular cross-section dimensions, face angles, datum surfaces, chamfers, edge protection, polished areas, clear aperture, and allowable cosmetic zones. These details help the prism fit its mount while preserving the required optical path.
Specify length, section dimensions, angles, and mechanical datums.
Mark polished faces, functional apertures, and non-optical areas.
Identify dimensional and optical acceptance criteria on the drawing.
Suitable when the optical design accepts normal glass-air surface reflections and no wavelength-specific coating is required.
Consider an anti-reflection coating when reduced reflection is required over a defined wavelength band and incidence range.
Provide wavelength, angle of incidence, polarization, coated faces, and performance target for review.
Confirm geometry, material, optical faces, tolerances, coating, and quantity.
Process the long prism and its functional surfaces to the agreed drawing.
Apply the approved AR coating to the specified optical faces.
Check agreed criteria and protect polished surfaces for shipment.

Yes. The original listing supports custom length and cross-section size; final feasibility follows the drawing and tolerance requirements.
No. Custom AR coating is optional and should be selected for the working wavelength and incidence conditions.
Send the drawing, dimensions, optical faces, wavelength, surface quality, flatness, angular tolerance, coating, quantity, and inspection needs.
The original product listing states a three-year warranty.
Review the prism category, compare related prism formats, or send the drawing and project requirements to Felix Glass Co., Limited.
Send the required length, cross-section drawing, optical-face definition, wavelength, coating choice, tolerances, quantity, and delivery requirements for a practical engineering review.
Send us your drawing, dimension & coating requirements for fast quotation within 24 hours.
Get Free RFQWe supply Industrial Glass, Sapphire Optics, Optical Lenses/Prisms/Filters, Infrared IR Optics, Functional & Display Glass, N-BK7/H-K9L Optical Glass, supporting OEM mass production and laboratory custom prototypes. Flexible MOQ & free sample service available. Fill in the form to download full datasheets and get factory wholesale price within 24 hours.

FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.
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.
A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.
All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.
Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.