Telecentric imaging lens used in calliper

A telecentric imaging and imaging lens technology, which is applied in the direction of instruments, measuring devices, and optical devices, can solve the problems of equipment cooling, cleaning, and equipment operation stability, etc., to achieve small size and ensure stability , Conducive to the effect of smooth rotation

Inactive Publication Date: 2011-08-31
HEFEI BAISHENG SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because steel rolling is carried out in an environment with high temperature, high humidity and heavy dust, when the size of the diameter measuring equipment is too large, it will be more difficult to cool and clean the equipment, which will reduce the stability of the equipment operation

Method used

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  • Telecentric imaging lens used in calliper
  • Telecentric imaging lens used in calliper
  • Telecentric imaging lens used in calliper

Examples

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Embodiment Construction

[0011] Such as Figures 1 to 4 The shown telecentric imaging lens used on a caliper includes an object-space telecentric imaging lens 10 and a corresponding image-space telecentric imaging lens 20, and an adjustable diaphragm 30 is set between the two lenses And the straightening mirror 40 for reflecting light. The chief light enters the telecentric imaging lens 10 on the object side, is reflected by the straightening mirror 40 , and then exits through the telecentric imaging lens 20 on the image side. As long as the chief ray passes through the reflection of the straightening mirror 40, according to the principle that the sum of the lengths of the two sides of the triangle is greater than the third side, under the condition that the length of the optical axis of the lens optical system remains unchanged, such a curved optical axis occupies The spatial size of the lens is more concentrated, and the corresponding lens structure is more compact. It is easy to arrange in the cal...

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Abstract

The invention relates to a telecentric imaging lens or a telecentric imaging system used in optical detector equipment. The telecentric imaging lens comprises an object space telecentric imaging lens and an image space telecentric imaging lens corresponding to the object space telecentric imaging lens; an adjustable diaphragm and a straight-turning reflecting mirror for reflecting a light beam are arranged between the two lenses; a main light beam enters the straight-turning reflecting mirror from the object space telecentric imaging lens and is reflected by the straight-turning reflecting mirror and emitted from the image space telecentric imaging lens; the main light beam in the lens is reflected in the straight-turning reflecting mirror and become a bent state instead of a long straight state any more, so the length of a path of the main light beam is guaranteed, and the appearance, the length and the size of the lens can become smaller and the structure of the lens is more compact under the condition of no change of the necessary size of the lens; therefore, the lens can be arranged in a calliper conveniently, in particular a rotating disk type calliper, to enhance the detection accuracy.

Description

technical field [0001] The invention relates to a telecentric imaging lens or a telecentric imaging system on an optical detection instrument. Background technique [0002] In metallurgy, especially in the iron and steel industry, it is necessary to carry out online and real-time diameter detection of the wire and bar at the exit of the rolling mill during the rolling process, so that when the wire and bar size deviation is found, the rolling mill can be adjusted and controlled in time to ensure the rolling accuracy. Yield. However, the caliper in the prior art is to set a plurality of optical imaging units along the circumference of the bar, and then fit the imaging of each unit to obtain the detection results. The principle requires as many imaging units as possible, so that the detection results can be The more accurate it is, but the reality is that the number of detection units is limited after all, so it is difficult to improve the detection accuracy. The detection re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/22G02B13/00G02B7/00G02B7/182G01B11/08
Inventor 娄霆武传华陆后兵王俊
Owner HEFEI BAISHENG SCI & TECH
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