Technical Resources for Custom Glass Fiber Optics and Capillary Arrays
Use these guides, publications, and data sets to understand the design variables behind CHI components. For an application-specific recommendation, contact CHI with the system requirements and the performance tradeoffs that matter most.
Design Guides
Publications and Presentations
Selected historical publications and presentations related to CHI materials and applications. Ask CHI whether a given data set or paper is representative of a proposed component.
Collimated Holes Structure Application
Matthew Begley
Example application of etchable collimated hole structures used to create thin polymer membranes.
Download PowerPoint (2.1 MB)Hybrid Scintillators for X-Ray Imaging
Clifford Bueno, Richard L. Rairden, and Robert A. Betz
SPIE 1996 paper on design, fabrication, and testing of hybrid scintillators using commercial phosphor screens and high-resolution scintillating Fiber Optic Faceplates.
Download PDF (1.0 MB)Comparison of X-Ray Absorption, Light Output, and Afterglow in Glass Fiber Optic Scintillators and Polycrystalline Scintillators
Clifford Bueno
Compares X-ray absorption, light output, and afterglow of polycrystalline screens to scintillating Fiber Optic Faceplates. Also titled “New Luminescent Glasses and Fiber Optic Scintillators for use in X-ray Imaging.”
Download PDF (196 KB)Patents
- Terbium-activated luminescent glass formulations. Collimated Holes holds five patents covering terbium-activated scintillating optical glass used in Fiber Optic Scintillators, Bulk Scintillators, and hybrid X-ray conversion structures.
- Five patents on terbium-activated luminescent glasses
- Scintillating fibers and Fiber Optic Faceplates for high-energy imaging
- Bulk scintillating plates for X-ray detection
- Formulations kept in stock to shorten engineering lead times
Performance Data
Selected historical scintillating-faceplate data are summarized on the Scintillating Glass page. Application-specific values should not be inferred from a different sample without analysis or testing. View scintillator data →
Technical Glossary
| Term | Definition |
|---|---|
| Capillary array | A glass structure containing many controlled channels, often parallel, made by etching soluble glass or assembling drawn tubes. |
| Collimated hole structure | CHI’s historical term for a capillary array or plate designed with parallel holes. |
| Numerical aperture (NA) | The sine of the half-angle of a fiber’s acceptance/emittance cone in air. |
| Open area ratio (OAR) | The open or optically active cross-sectional area divided by the total cross-sectional area. |
| Extra-mural absorption (EMA) | Dark absorbing glass incorporated around or between fibers to reduce stray light and cross-talk. |
| Fiber optic faceplate (FOFP) | A coherent fused-fiber plate that transfers an image from one polished surface to the other. |
| Image conduit | A coherent fiber bundle that carries an image while preserving relative fiber positions. |
| Scintillator | A material that emits visible light when excited by ionizing radiation or other high-energy particles. |
| Length-to-diameter ratio (L/D) | Channel length divided by channel diameter; also called aspect ratio. |
Using CHI Data Responsibly
Published values describe particular materials, samples, and test conditions. They are useful for identifying a design direction, not as an automatic guarantee for another geometry or system. Ask CHI whether the data are representative of the proposed component and what qualification or testing is appropriate.