Spectrometer having a variable focus lens with a single air gap
US10459191B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Aug 20, 2018 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Aug 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2240/11
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The technology provides two or more spectrometers having uniform focal lengths that facilitate comparing spectral results obtained therefrom. The spectrometers include a collimating lens that receives light rays therethrough, a grating that is optically coupled to the collimating lens, and a focus lens that is optically coupled to the grating. The focus lens includes an outer body having a first lens set, an inner body having a second lens set, and an air gap defined between the first lens set and the second lens set. The inner body is moveable relative to the outer body to adjust a size of the air gap in order to modify a focal length of the focus lens. The inner body moves relative to the outer body to change an image size in the x-dimension. A fastener is provided to fixedly secure the inner body and the outer body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.