Title:
マルチスペクトル絞り装置
Document Type and Number:
Japanese Patent JP6761787
Kind Code:
B2
Abstract:
The invention relates to an iris device (1) for optical imaging systems (71), comprising an aperture arrangement (5) and to a medical imaging system (72) comprising a sensor (15), in particular a camera (15a). Conventional iris devices (1) known from the art unavoidably suffer a necessary trade-off between the depth of field and the amount of light transmitted through the optical system (71), i.e. in particular the amount of light incident on the sensor (15). This disadvantage results from the fact that iris devices (Wo one) of the art transmit or reject light in the same way for all wavelengths (43), i.e. show a spectrally flat transmission property. The disadvantages of prior art iris devices (1) are overcome by the present invention by providing an aperture arrangement (5) which comprises simultaneously at least two apertures (5a) coaxially arranged with respect to a light-transmission direction (70), each of the at least two apertures (5a) limiting light in a different spectral band (49) of the at least two discrete non-overlapping spectral bands (49). The inventive medical imaging system (72) solves the above disadvantages by further comprising at least one inventive iris device (1).
Inventors:
George temelis
Application Number:
JP2017157580A
Publication Date:
September 30, 2020
Filing Date:
August 17, 2017
Export Citation:
Assignee:
Leica Instruments (Singapore) Pte. Ltd.
International Classes:
G03B9/02; A61B1/00; G02B21/36; G03B9/04; G03B11/00; G03B15/00; G03B15/02
Domestic Patent References:
| JP2009284133A |
Foreign References:
| WO2011007435A1 | ||||
| WO2010140679A1 | ||||
| WO2012098806A1 | ||||
| US20130016220 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima