Hypergon
The Hypergon is a super wide angle lens for photographic use.
Emil von Höegh from the Optische Anstalt CP Goerz company developed it. His boss Carl Paul Goerz applied for the patent in 1900.
The hypergon consists of two axially symmetrically arranged, strongly meniscus-shaped lenses, which with a large f-number (approximately from 23 to 32) deliver good image quality up to a diagonal image angle of 135 °. The strong fall in light from the center of the image to the edge of the image (the vignetting ) is compensated for by a rotating mask.
The Hypergon is the first lens that can deliver a diagonal angle of view of 135 ° with an acceptable image quality. Its only disadvantages are the high price and the low light intensity .
Due to the light intensity, the hypergon was gradually replaced by more complex constructions such as the topogon, the hologon or the biogon .
Web links
- HYPERGON article on the history of super wide-angle lenses, starting with the Hypergon, by Marco Cavina (in Italian)
Individual evidence
- ↑ US706650A - Astigmatically-corrected wide-angle objective. - Google Patents USA patent for Carl Paul Goerz, applied for November 5, 1900, granted August 12, 1902 (in English)