Title:
内部鏡面反射を軽減する同心分光計
Document Type and Number:
Japanese Patent JP4611591
Kind Code:
B2
Abstract:
Concentric spectrometers are plagued with internal reflections due to inherent nature of more than one optical surface possessing a common center of curvature. Reflections from optical surfaces arise when there is a difference or change in the refractive index of the media in which an optical beam or ray of a given wavelength is propagating. Internal reflections in concentric optical systems can produce a myriad of undesirable optical phenomenon at the image plane such as multiple images of an object, interference fringes, and stray light. As a result a loss in contrast or detection limit arise from such phenomenon in which light or detectable radiation that impinges on the image plane does not add to the formation of the intended image, (stray light). The present invention produces high quality images without the optical phenomenon(s) that arise from internal reflections by removing the reflected radiation from propagating through the optical system.
Inventors:
Parumbo, Perry, A
Application Number:
JP2001542163A
Publication Date:
January 12, 2011
Filing Date:
November 13, 2000
Export Citation:
Assignee:
Hack Company
International Classes:
G01J3/18; G01J3/02; G01J3/04; G02B5/18
Domestic Patent References:
| JP10293062A |
Foreign References:
| US4798446 |
Other References:
M.Pouey,“Imaging Properties of Holographic Gratings”,Physica Scripta,1990年 6月,Vol.41, No.6,pp.765-768
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Toru Mori
Yutaka Yoshida
Hajime Asamura
Toru Mori
Yutaka Yoshida