The Tessar is a photographic lens design conceived by the German physicist Dr. Paul Rudolph in 1902 while he worked at the Zeiss optical company and patented by Zeiss in Germany; the lens type is usually known as the Zeiss Tessar.

2024年3月5日 · The Tessar is a camera and projection lens designed by Paul Rudolph, working for the Carl Zeiss Jena company, in 1902. It is normally used as a standard lens, and versions of it have been fitted to many millions of cameras.

2024年9月23日 · When beginning the design of a Tessar lens, the best place to start is with the glass selection. For best results, the positive elements should be made of high-index crown glass. This helps to reduce the naturally negative Petzval sum and higher-order aberrations.

2024年4月12日 · Many of these lenses are Triplets or Tessars, so that the diagrams shown before apply here. It is interesting to note that the Stenheil Cassar reappears here, but with a construction type Triplet (diagram T1) and ranges of FLs and apertures different from that shown in …

2020年7月6日 · Comparison of the image quality between the original patented Tessar and an re-optimised version of the lens. Examining the simulated image (which doesn’t take into account depth) we can see some of the character of each lens.

2023年6月11日 · The optical vignetting of the lens is minimal due to this lens’ widest aperture at only f/2.8, in combination with its super compact design – no wonder the bokeh balls are so nicely round and beautiful almost to the corners.

天塞镜头的基本结构为四片三组式，前组为 重钡冕石 单凸透镜，中组为 燧石 单凹透镜，后组为一燧石凹透镜和一钡冕石凸透镜贴合在一起而成的胶合双镜组。 光圈安放在后组透镜之前。 天塞镜头是20世纪初光学技术和计算科学进步的产物。 天塞镜头解像力高、反差强烈、畸变很小，而且对球面相差、色差、像散有良好的校正。 二、 天塞（Tessar）结构镜头的发展历程. 二战前配天塞镜头的相机就已大量面世了，如1937年最出名的禄来福莱克斯的AutoMat上配备的就 …

The Tele-Tessar is a true tele lens comprised of a positive front group and a negative rear element, i.e. a system whose length is clearly shorter than the focal length, which makes long focal lengths more convenient.

Tessar lens More degrees of freedom Can be thought of as a re-optimization of the PROTAR Sharper than Cooke triplet (low index) Compactness

The Tessar is a camera lens designed by Paul Rudolph, working for the Carl Zeiss Jena company, in 1902. It is normally used as a standard lens, and versions of it have been fitted to many millions of cameras.