▸ CURRENT POINTING - HOMEPAGE

Henry Quach

SENIOR OPTICAL ENGINEER · PH.D. in OPTICAL SCIENCES

Welcome! I’m an optical systems engineer at ASML, working on precision sensing systems for EUV lithography. My background spans optical design, illumination, stray light, and optomechanical engineering. This site is a working notebook for the things I build, study, and occasionally overthink.

// instrument turret — indexing changes the sky

▸ ACCUMULATED EXPOSURES

Experience

VIEW RESUMÉ (PDF) →

▸ EXPERIENCE

▸ EDUCATION

▸ OBJECTS CATALOG

Projects

// the full catalog — filter the catalog

▸ ARCHIVAL RECORD

Publications

▸ JOURNAL ARTICLES

▸ CONFERENCE PROCEEDINGS

▸REFERENCE STARS

Reading

// each year forms its own asterism — favorites trace the figure · color marks genre

▸POINTING HOME

About Me

// talk to me about optics

I earned my Ph.D. at the University of Arizona's Wyant College of Optical Sciences, developing deflectometry methods for freeform and inflatable optics.

This site is my working notebook made public. Part of it is professional record — experience, publications — but most of it is what curiosity produces when it's given tooling: interactive raytracers, wavefront sandboxes, stray light analyzers, and small studies of whatever question wouldn't leave me alone that month.