Betekenis van:
focal ratio

focal ratio
Zelfstandig naamwoord
  • snelheid waarmee gevaren wordt
  • the ratio of the focal length to the diameter of a (camera) lens system

Synoniemen

Hyperoniemen

focal ratio
Zelfstandig naamwoord
  • lichtgevoeligheid van opnamemateriaal
  • the ratio of the focal length to the diameter of a (camera) lens system

Synoniemen

Hyperoniemen

focal ratio
Zelfstandig naamwoord
  • diafragmagetal
  • the ratio of the focal length to the diameter of a (camera) lens system

Synoniemen

Hyperoniemen


Voorbeeldzinnen

  1. Largest optical-aperture dimension less than 1 m and focal length to aperture ratio equal to or greater than 4.5:1;
  2. A largest optical-aperture dimension less than 1 m and a focal length to aperture ratio equal to or greater than 4,5:1;
  3. largest optical-aperture dimension less than 1 m and focal length to aperture ratio equal to or greater than 4.5:1;
  4. largest optical-aperture dimension equal to or greater than 1 m and focal length to aperture ratio equal to or greater than 7:1;
  5. Largest optical-aperture dimension equal to or greater than 1 m and focal length to aperture ratio equal to or greater than 7:1;
  6. A largest optical-aperture dimension equal to or greater than 1 m and a focal length to aperture ratio equal to or greater than 7:1;
  7. A largest optical-aperture dimension less than 1 m and a focal length to aperture ratio equal to or greater than 4,5:1; b. A largest optical-aperture dimension equal to or greater than 1 m and a focal length to aperture ratio equal to or greater than 7:1; c. Being designed as Fresnel, flyeye, stripe, prism or diffractive optical elements; d.
  8. A largest optical-aperture dimension equal to or greater than 1 m and a focal length to aperture ratio equal to or greater than 7:1; c. Being designed as Fresnel, flyeye, stripe, prism or diffractive optical elements; d.
  9. A ratio of scan direction dimension of the detector element to the cross-scan direction dimension of the detector element of less than 3,8; or b. Signal processing in the element (SPRITE); e. Non-"space-qualified" linear (1-dimensional) "focal plane arrays", having individual elements with a peak response in the wavelength range exceeding 2500 nm but not exceeding 30000 nm. b. "Monospectral imaging sensors" and "multispectral imaging sensors" designed for remote sensing applications, having any of the following: