CN2896220Y

CN2896220Y - Optical lever of measuring micro-length by using laser

Info

Publication number: CN2896220Y
Application number: CN 200620110633
Authority: CN
Inventors: 孙卫伟
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2006-05-20
Filing date: 2006-05-20
Publication date: 2007-05-02
Anticipated expiration: 2016-05-20

Abstract

The utility model relates to an optical lever of measuring micro-length by laser which comprises a T-shape bracket; a first toe a, a second toe b and a third toe c provided on the lower part of the T-shape bracket, is characterized in that: An adjusting mechanism is positioned on the upper part of the T-shape bracket, a laser is placed on the upper part of the T-shape bracket and connects with the adjusting mechanism. The adjusting mechanism can regulate the laser along the horizontal direction to keep the laser in a level position and inclined for a certain angle. The second toe b and the third toe c positioned on the lower part of the T-shape bracket are of the same height. The present utility model can provide such virtues as simple structure, easy operation, no complicated adjustment and accurate measurements.

Description

A kind of optical lever device of laser measurement tiny length

Technical field

The utility model relates to a kind of optical lever device of laser measurement tiny length.

Background technology

In engineering and scientific experiment, need to measure the tiny length variable quantity.As in the experiment of the linear expansion coefficient of measuring Young modulus wiry and measurement metal bar with pulling method, just need to measure the tiny length variable quantity.Normal employing method is that specular light lever and milscale are measured, the specular light lever is normally adorned a telescope on the next door of light source, a transparent ruler is equipped with in the light source front, there is fulcrum to link to each other under the small mirror a long way off with determinand, see ruler resembling in the telescope by being adjusted at mirror, the mirror area is little, regulates trouble, is not easy to measure; Milscale needs fixation measuring when measuring the tiny length variable quantity, promptly the change in location of measurement point can cause measuring error.

Summary of the invention:

The purpose of this utility model provides a kind of optical lever device of laser measurement tiny length, and it is simple in structure, and cost is low, and is easy to use.

One of optical lever device of a kind of laser measurement tiny length described in the utility model, comprise "T"-shaped support, be provided with the first toe a, the second toe b and the 3rd toe c in the bottom of "T"-shaped support, it is characterized in that: the top at "T"-shaped support is provided with governor motion, laser instrument is arranged on the top of "T"-shaped support, and is connected with governor motion.But the governor motion along continuous straight runs is regulated laser instrument, makes it to be in horizontality, and certain angle perhaps tilts.

The optical lever device of described a kind of laser measurement tiny length, the second toe b and the 3rd toe c of bottom that is located at "T"-shaped support is contour.

Two of the optical lever device of a kind of laser measurement tiny length described in the utility model, comprise " ∏ " support, bottom at " ∏ " support is provided with a surface plate, below surface plate, be provided with the first toe a, the second toe b and the 3rd toe c, it is characterized in that: the top at " ∏ " shape support is provided with governor motion, laser instrument is arranged on the top of " ∏ " shape support, and is connected with governor motion.But the governor motion along continuous straight runs is regulated laser instrument, makes it to be in horizontality, and certain angle perhaps tilts.The effect of surface plate is fixedly toe and ∏ " support.

The optical lever device of described a kind of laser measurement tiny length, the second toe b and the 3rd toe c of bottom that is located at " ∏ " shape support is contour.

The utility model is work like this: when laser instrument was luminous, laser sent only superfine straight line, and rotatable governor motion makes laser instrument be in horizontality, and this optical axis is ON ₁, when current a toe was elevated, optical axis became ON ₂, i.e. light ON ₁With ON ₂A little angle theta is arranged, and this angle is less, and A is the variable quantity of raising, and d is the vertical range of toe a to b, c on line.

θ = \frac{A}{d}

Ruler at the distance D place, optical axis ON ₁With optical axis ON ₂The scale of projection is respectively b on ruler ₁And b ₂, then

\frac{b_{2} - b_{1}}{D} = \frac{A}{d},

A = \frac{b_{2} - b_{1}}{D} \cdot d,

Be that variable quantity A can try to achieve.

Owing to taked technique scheme, the utility model that following advantage is arranged: simple in structure, easy to operate, need not do complicated debugging again; Measure relatively accurate.

Description of drawings

Fig. 1 is the structural representation of first scheme of the present utility model.

Fig. 2 is the structural representation of alternative plan of the present utility model.、

Fig. 3 is a measuring principle synoptic diagram of the present utility model.

Embodiment

Embodiment 1: referring to Fig. 1 and Fig. 3, governor motion 2 is installed in the top that the bottom is provided with the "T"-shaped support 1 of the first toe a, the second toe b and the 3rd toe c, again laser instrument 3 is installed in " T " " top of shape support 1; and be connected with governor motion 2, the second toe b and the 3rd toe c of bottom that is located at "T"-shaped support is contour; But the governor motion along continuous straight runs is regulated laser instrument, makes it to be in horizontality, and certain angle perhaps tilts.

Measure with the utility model that the variation of tiny length is performed such: with toe b of the present utility model, c is placed on the surface plate, and the first toe a is placed on the object under test.Put a vertical ruler 5 at the D place, dead ahead of laser instrument 3 light-emitting lines, laser instrument 3 light-emitting lines are thrown at vertical ruler.When object under test stressed or be heated after, the object under test shape will change, and the first toe a raises or reduces, and make the certain angle of laser instrument inclination that is in horizontality, measured tiny length is amplified, can more accurate variation of measuring tiny length by calculating.

Embodiment 2: referring to Fig. 2 and Fig. 3, with the following surface plate 4 that is provided with the first toe a, the second toe b and the 3rd toe c, be installed in the bottom of " ∏ " support 1, governor motion 2 and laser instrument 3 are installed in the top of " ∏ " support 1, and governor motion 2 is connected with laser instrument 3; The second toe b and the 3rd toe c of bottom that is located at " ∏ " shape support is contour; But the governor motion along continuous straight runs is regulated laser instrument, makes it to be in horizontality, and certain angle perhaps tilts.

Claims

1, a kind of optical lever device of laser measurement tiny length, comprise "T"-shaped support (1), be provided with the first toe a, the second toe b and the 3rd toe c in the bottom of "T"-shaped support, it is characterized in that: be provided with governor motion (2) on the top of "T"-shaped support (1), laser instrument (3) is arranged on the top of "T"-shaped support (1), and is connected with governor motion (2).But the governor motion along continuous straight runs is regulated laser instrument, makes it to be in horizontality, and certain angle perhaps tilts.

2, the optical lever device of a kind of laser measurement tiny length according to claim 1 is characterized in that: the second toe b and the 3rd toe c of bottom that is located at "T"-shaped support is contour.

3, a kind of optical lever device of laser measurement tiny length, comprise " ∏ " support (1), be provided with a surface plate (4) in the bottom of " ∏ " support, below surface plate, be provided with the first toe a, the second toe b and the 3rd toe c, it is characterized in that: be provided with governor motion (2) on the top of " ∏ " shape support (1), laser instrument (3) is arranged on the top of " ∏ " shape support (1), and is connected with governor motion (2).But the governor motion along continuous straight runs is regulated laser instrument, makes it to be in horizontality, and certain angle perhaps tilts.

4, the optical lever device of a kind of laser measurement tiny length according to claim 3 is characterized in that: the second toe b and the 3rd toe c of bottom that is located at " ∏ " shape support is contour.