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Reducing contact sphere diameter instrument

A contact-type, spherical-diameter technology, applied in the direction of mechanical counter/curvature measurement, etc., can solve the problems of poor synchronization performance, poor judgment of the ejector rod, and high cost, so as to eliminate random errors and the influence of human factors, overcome the Unable to measure multiple times, the effect of a high degree of automation

Inactive Publication Date: 2005-02-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0003] 1. It is difficult to judge whether the ejector rod has just hit the spherical surface, and there is a large artificial random error
[0004] 2. The manufacturing accuracy of the chuck is not high, and the synchronization performance is not good when rotating, so it can only be used for instant rough measurement on site
This kind of spherometer has high precision, but it is expensive, and because the measuring ring is limited, there is only a ring with a fixed diameter, so it is impossible for spherical mirrors of all diameters to achieve the highest nominal accuracy, such as the German Spheromatic H spherometer, The accuracy is very high, but not all spherical mirrors can achieve the highest measurement accuracy, and it is troublesome to measure again after replacing the measuring ring, and it is easy to damage the device

Method used

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Embodiment Construction

[0027] First see figure 1 , The variable-diameter contact ball diameter meter of the present invention is composed of an automatic control part and a mechanical main body: the automatic control part has a microcomputer 7-1, a driving power supply 7-2, and a stepping motor 5-1. By using the drive power supply 7-2 with the single-chip microcomputer 7-1 as the core, the stepping motor 5-1 is connected with the data line 7-3, the stepping motor 5-1 has the function of controlling the number of steps, direction and speed. The main part of the machine has a guide rail bracket 1, a connecting rod 2, a grating ruler 3, a roller screw mechanism 4 and a body 6.

[0028] The specific connection and installation are as follows:

[0029] The computer 7-1 has 2 lines connected, one is connected to the driving power supply 7-2 of the stepping motor 5-1 to give the signal pulse of the driving power supply 7-2, and the other is connected to the grating ruler 3 to receive the signal output by the ...

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Abstract

This is a contact sphero-meter, which comprises computer, the step-by-step electric motor, the straight-line slide way, the grating ruler, the ball bearing, and screw rod. At first, to measure the curvature of the spherical mirror by the grating ruler, then the computer calculates the radius of the spherical, mirror according the formula. This device can measure any spherical mirrors and lenses. This instrument has more measure precision.

Description

Technical field [0001] The invention relates to a spherical optical element, in particular to a variable-diameter contact type spherometer. Background technique [0002] Spherometer is an instrument that measures the radius of curvature of the surface of a spherical optical element. Optical components are very precise components. If the sphere radius of the spherical mirror cannot be measured accurately, the component parameters such as focus cannot be determined. There are typically two types of existing contact ball diameter gauges for measuring the diameter of a ball. The first is for rough measurement during on-site processing, with low accuracy and large errors in mechanical devices. The advantage is that the chord radius can be changed and it is easy to use. For example, CN86201617u, the name is direct-reading spherometer. It uses a chuck as the base of the bracket, and when the chuck is rotated, the bracket moves outward while driving it. In the measurement, the spiral mic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/22
Inventor 董华兴庞向阳博锋王勇朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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