Roger Hayward

{{Short description|American engineer (1899–1979)}}

{{infobox person

|name = Roger Hayward

|image = 220 px

|caption =

|death_date = {{Death date and age|1979|10|11|1899|10|11}}

|birth_date = {{Birth date|1899|10|11}}

|occupation = Artist

|notable_works = Blivet

}}

Roger Hayward (1899 – October 11, 1979) was an American artist, architect, optical designer and astronomer. He is the inventor of an early Schmidt-Cassegrain camera that was patented in 1945. He was born on January 7, 1899, to mother, artist Ina Kittredge (Phelps) Hayward and local businessman and time piece hobbyist Robert Peter Hayward. He was the grandson of American landscape artist William Preston Phelps.{{Cite web | url=http://scarc.library.oregonstate.edu/coll/hayward/timeline.html | title=Timeline for Roger Hayward - Roger Hayward Papers, 1899-2007 - Special Collections & Archives Research Center, Oregon State University Libraries}}

In December 1968 he wrote "Blivets: Research and Development" to The Worm Runner's Digest in which he presented interpretations of impossible objects.{{cite book | title = Mathematical Circus| last = Gardner | first = Martin | authorlink = Martin Gardner | publisher = Pelican Books | year = 1981 | page = 5}}