JPH01151232U

JPH01151232U -

Info

Publication number: JPH01151232U
Application number: JP4683088U
Authority: JP
Priority date: 1988-04-08
Filing date: 1988-04-08
Publication date: 1989-10-19

Description

[Brief explanation of the drawing]

第１図は、本考案に係る反射偏心測定装置の一
実施例の全体構成を原理的に示す側面図、第２図
は、同実施例における結像面７に形成される指標
の反射光像とラインセンサとの関係を説明するた
めの図、第３図は、第２図に示した検出位置を拡
大して示す拡大図である。Ｘ……光軸、１……光源、２……指標板、３…
…半透鏡、４……コリメータレンズ、５……対物
レンズ、６……被測定レンズ、６ａ，６ｂ……レ
ンズ面、７……結像面、８……ラインセンサ、９
，１０……反射光像。 FIG. 1 is a side view showing the principle of the overall configuration of an embodiment of the reflective eccentricity measuring device according to the present invention, and FIG. 2 is a reflected light image of an index formed on the imaging plane 7 in the same embodiment. FIG. 3 is an enlarged view showing the detection position shown in FIG. 2. X...optical axis, 1...light source, 2...index plate, 3...
... Semi-transparent mirror, 4 ... Collimator lens, 5 ... Objective lens, 6 ... Lens to be measured, 6a, 6b ... Lens surface, 7 ... Image forming surface, 8 ... Line sensor, 9
, 10...Reflected light image.

Claims

[Scope of utility model registration request]

By projecting an index light image onto the center of curvature of each surface of the lens to be measured and measuring reflected light images of the index light image from each surface, the amount of eccentricity of the entire lens to be measured or each of the surfaces is measured. In a reflection eccentricity measuring device, a light source, an index plate having a linear index and arranged in front of the light source so as to be rotatable by 90 degrees from an initial position about an optical axis, and a target plate disposed in front of the index plate. an imaging lens that focuses the light flux emitted from the index plate and projects an index light image onto the surface of the lens to be measured; and an imaging lens that is disposed between the imaging lens and the index plate, and that a reflecting member that reflects the light beam reflected by the lens and transmitted through the imaging lens in a direction oblique to the optical axis to form a reflected light image of the indicator; 1. A reflection eccentricity measuring device comprising: a one-dimensional image sensor disposed at an angle of 45° to the longitudinal direction of an optical image and having gradation in its output.