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Method for measuring optical property of glasses lens and lens meter

A technology for optical properties and spectacle lenses, which is used in the testing of optical performance, optical instrument testing, and equipment for testing eyes, etc. It can solve the problems of inaccurate measurement and measurement of beam projection

Inactive Publication Date: 2008-10-15
KK TOPCON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, since the spectacle lens is fixed in a certain position by the lens pressing part, it is impossible to project the measuring beam onto the part of the spectacle lens pressed by the lens pressing part, and this part cannot be accurately measured.

Method used

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  • Method for measuring optical property of glasses lens and lens meter
  • Method for measuring optical property of glasses lens and lens meter
  • Method for measuring optical property of glasses lens and lens meter

Examples

Experimental program
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Embodiment Construction

[0043] An embodiment of the present invention will be described below with reference to the drawings.

[0044] (structure)

[0045] (instrument body)

[0046] Fig. 1 is the front view of scope instrument according to the present invention, figure 2 It is the right side view of the inspection instrument shown in Fig. 1.

[0047] In Figure 1 and figure 2 In , reference numeral 1 denotes an instrument main body (main body housing). The instrument main body 1 is made up of an upper box body 2, a lower box body 3 and a connection box body 4 for connecting the upper box body 2 and the lower box body 3, and forms a substantially as figure 2 The U-shaped structure shown. The space between the upper box body 2 and the lower box body 3 constitutes an installation space 6 for placing a pair of glasses 5 (as shown in FIG. 5 ). The connection box 4 is composed of a front wall 4a and a rear detachable box part 4b.

[0048] In this embodiment, a pair of spectacles 5 has a spectacle fr...

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Abstract

Disclosed are a spectacle lens optical characteristics measuring method and a lens meter in which measurement beams are not intercepted by lens pressers. The left and right lenses of a pair of spectacles are point-supported by lens rest shafts at some midpoints in the optical paths of a pair of left and right measurement optical systems, and the spectacle frame for the lenses is held by a pair of frame retaining plates from the front and rear sides. In this state, the spectacle lenses are pressed against lens rest shafts by lens presser shafts to be thereby supported, whereby the way the spectacle frame is held by the frame retaining plates is corrected. After the correction, the lens presser shafts are retracted from the measurement optical paths of the measurement optical systems, and measurement beams around the lens rest shafts transmitted through the spectacle lenses are received by a CCD of the measurement optical systems, the optical characteristics of the spectacle lenses being obtained by a computation control circuit on the basis of measurement signals from the CCD.

Description

technical field [0001] The invention relates to a method for measuring the optical characteristics of spectacle lenses and an inspection instrument, which can respectively measure the refraction characteristics of the left and right lenses of a pair of glasses through two sets of optical measurement systems. Background technique [0002] Commonly known scope inspection instruments include: an upper adjustment protrusion and a lower adjustment protrusion that are arranged on the upper and lower parts of the front surface of the main body shell and are spaced apart from each other in the vertical direction; a lens holder; a lens table extending in the horizontal direction and mounted to the main body casing so as to be movable back and forth relative to the lens holder; a nose pad support member mounted to the lens table so as to be horizontally and vertically movable; and for measuring Optical measurement system for the refractive properties of lenses placed on lens holders. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/10G01M11/02
CPCG01M11/0214G01M11/0221G01M11/0235G01M11/0207G01M11/0228G01M11/02
Inventor 中村新一柳英一
Owner KK TOPCON
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