Invention Grant
US07764364B2 Lens meter for measuring optical characteristics of a lens 有权
用于测量透镜的光学特性的透镜计

  • Patent Title: Lens meter for measuring optical characteristics of a lens
  • Patent Title (中): 用于测量透镜的光学特性的透镜计
  • Application No.: US11658181
    Application Date: 2005-08-23
  • Publication No.: US07764364B2
    Publication Date: 2010-07-27
  • Inventor: Tadashi KajinoYutaka Ohmori
  • Applicant: Tadashi KajinoYutaka Ohmori
  • Applicant Address: JP Gamagori-Shi
  • Assignee: Nidek Co., Ltd.
  • Current Assignee: Nidek Co., Ltd.
  • Current Assignee Address: JP Gamagori-Shi
  • Agency: Oliff & Berridge PLC
  • Priority: JP2004-242946 20040823
  • International Application: PCT/JP2005/015262 WO 20050823
  • International Announcement: WO2006/022253 WO 20060302
  • Main IPC: G01B9/00
  • IPC: G01B9/00
Lens meter for measuring optical characteristics of a lens
Abstract:
A lens meter having a measurement-optical system including a light source which projects and a light-receiving sensor which receives a light beam having passed through the lens; an arithmetic part which obtains optical characteristics of the lens from results received by the light-receiving sensor; mode selecting device which selects between a single-focal-lens-measurement mode and a progressive-lens-measurement mode; detecting device which detects directions and degrees of displacement of measurement positions from a near-vision portion of a progressive lens based on optical characteristics obtained when the progressive-lens-measurement mode is selected and alignment is made to bring the measurement position into the near-vision portion; a display which displays an alignment screen; and a display-control part which causes the display, based on detection results by the detection device, to display a guide mark indicating a direction and an amount that the lens must be moved to bring the measurement position into the near-vision portion.
Public/Granted literature
Information query
Patent Agency Ranking
0/0