Eccentricity adjusting and assembling method, and eccentricity adjusting and assembling device of optical element

An optical element, eccentric adjustment technology, applied in optical elements, optical devices, optics, etc., can solve the problem of no established method, etc., and achieve the effect of effective measurement and high-precision measurement

Inactive Publication Date: 2010-12-08
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these groups of lenses, there is no clear method for how to measure the amount of lens deviation, adjust the decentering, and assemble the lenses with high precision and efficiency.

Method used

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  • Eccentricity adjusting and assembling method, and eccentricity adjusting and assembling device of optical element
  • Eccentricity adjusting and assembling method, and eccentricity adjusting and assembling device of optical element
  • Eccentricity adjusting and assembling method, and eccentricity adjusting and assembling device of optical element

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Embodiment Construction

[0039] Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. figure 2 It is a schematic block diagram of the apparatus used for the eccentricity adjustment assembly method of the optical element which concerns on one Embodiment of this invention.

[0040] That is, the eccentricity adjustment assembly device 1 measures the eccentricity of each inspected lens of the inspected lens assembly 5, and adjusts the measured eccentricity to be substantially 0. In this state, it has the following configuration: a measuring head 10, a rotatable A base 20 for holding the lens assembly 5 under inspection, an analysis operation unit 30 for performing various calculations for calculating eccentricity, and a Z-axis stage 40 for holding the measuring head 10 movably in the vertical direction in the figure.

[0041] The measuring head 10 includes: a light source 11 that outputs a light beam that is irradiated on the above-mention...

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PUM

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Abstract

The invention provides an eccentric adjusting and assembling method and adjusting and assembling device of optical element. The method includes: only mounting a first lens located most against the incident side of the measuring light S1; secondly, measuring the eccentric amount of the first lens S2, and calculating the position adjusting amount of the first lens based on the measured value S3; subsequently adjusting the eccentric amount of the first lens to make the eccentric amount close to 0 S5, measuring the eccentric amount of the first lens again S5, to judge whether it is below the critical value S6; returning to step 3 if it is larger than the critical value, adhering the first lens to the inside of the lens barrel 61 if it is below the critical value S7; and then judging whether a next lens needed to mount exists S8, if so, repeating the steps 1 to 7 to the lens. Therefore, when the optical element group to be detected is a coaxial group configured with a plurality of optical elements, as an integral system, the eccentric adjusting and assembling method and adjusting and assembling device of optical element can be effectively performed at high accuracy.

Description

technical field [0001] The present invention relates to an eccentricity adjusting and assembling method and eccentricity adjusting and assembling device of an optical element, which measure the optical element to be inspected based on the coordinate data of an index image (an index image) formed by irradiating the measured surface of an optical element such as a lens group with measuring light The amount of eccentricity, and adjust the eccentricity while assembling the optical element assembly under inspection. Background technique [0002] Conventionally, there is known a method of measuring the amount of decentering of each lens in the process of manufacturing a device using a lens, and reducing the decentering based on the measured value so that the lens is held in a lens frame (lens barrel). Among them, a method using a measurement method called an autocollimation method is known as a method of measuring the decentering amount of a lens (see Patent Documents 1 to 3 below...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/02G01B11/27
CPCG01M11/0221G01B11/27G02B7/02
Inventor 孙萍
Owner FUJIFILM CORP
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