CN102854634A

CN102854634A - Reticle for high-magnification continuous focusing image pickup system

Info

Publication number: CN102854634A
Application number: CN2012103125669A
Authority: CN
Inventors: 刘仲宇; 刘家燕
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2012-08-29
Filing date: 2012-08-29
Publication date: 2013-01-02

Abstract

The invention discloses a reticle for a high-magnification continuous focusing image pickup system, belonging to the technical field of optical instrument. The reticle comprises a glass substrate, two horizontal fine scribed lines, two vertical fine scribed lines, a center point, two horizontal thick scribed lines and two vertical thick scribed lines, wherein the center point is scribed on the centre of symmetry of the glass substrate; the two horizontal fine scribed lines and the two horizontal thick scribed lines are located above and below the center point respectively and are symmetric relative to the center point; the two vertical fine scribed lines and the two vertical thick scribed lines are located on the left and right of the center point respectively and are symmetric relative to the center point; and the two horizontal thick scribed lines and the two vertical thick scribed lines are separated from the middle, and the middle separation distance is the length of the radius of the glass substrate. According to the invention, a debugging mode of double lines clamping lines is adopted; and when the long and short focal lengths change, the image of a #-shaped reference line of the reticle equivalent to the thickness of a reference electric cross line can be seen from a monitor, thereby facilitating the accurate reading of an observer and improving the alignment debugging precision.

Description

A kind of graticule for large-multiplying power continuous zooming camera system

Technical field

The invention belongs to the optical instrument technical field, be specifically related to a kind of graticule for large-multiplying power continuous zooming camera system.

Background technology

So-called large-multiplying power continuous zooming camera system, refer to camera system long and short focal length variation multiplying power (zoom) more than ten doubly more than.So-called high precision debugging is that the present invention adopts the aligning debugging of two-wire clamp with respect to the debugging of conventional graticule employing to two straight line coincidence systems.

Large-multiplying power continuous zooming camera system is inconsistent at long and short Jiao's optical axis, can make optical axis target deflect away from the visual field, center, can affect high-acruracy survey or TV tracking, so large-multiplying power continuous zooming camera system in testing process, the light axis consistency error should be controlled in certain margin tolerance.

To the debugging of optical system, mostly undertaken by parallel light tube.Parallel light tube can be used as the target of infinite distance, parallel beam is provided, it is comprised of light source, graticule and optical system, as the debugging benchmark, in the laboratory, debugging to the visible light continuous zooming camera system be unable to do without parallel light tube, places the style of the graticule on the parallel light tube focal plane of lens to play vital effect.

Denomination of invention is a kind of graticule for the debugging of large-multiplying power continuous zooming camera system high precision, application number is 200810051550.0 Chinese patent, as shown in Figure 1, and on a transparent glass substrate 1, be carved with mutually perpendicular two thin grooves 4, the directrix width is 0.1mm usually; Be carved with separated in orthogonal two again and broach line 2, broaching line width is 1mm; Two sections lines of thickness join, and two thin grooves 4 are near symcenter 3.When zooming camera system long-focus (being large multiplying power) imaging, such as Fig. 2, benchmark electricity " cross " line 11 overlaps with two thin grooves 4 and aims on monitor.When the short focal length imaging of zooming camera system, as shown in Figure 3, graticule shows as shown in the figure at screen, and benchmark electricity " cross " line 11 broached line 2 coincidences and aimed at two on monitor this moment.Although existing invention has solved the matching problem of the burnt benchmark electricity of zooming camera system length " cross " line 11 with the division of the graticule width, improved the accuracy that line is aimed at, but owing to adopt the method for line pressure line, to on time, graticule is difficult to overlap fully with benchmark electricity " cross " line, and alignment precision remains more one to go on foot raising.

Summary of the invention

The objective of the invention is in order to solve existing graticule when being used for large-multiplying power continuous zooming camera system, the problem that adjustment accuracy is poor, and a kind of graticule for large-multiplying power continuous zooming camera system is provided.

The invention provides a kind of graticule for large-multiplying power continuous zooming camera system, this graticule comprises glass substrate, article two, horizontal thin groove, article two, vertical thin groove, central point, article two, level broaches line and two and vertically broaches line, described central point is engraved on the symcenter of glass substrate, article two, horizontal thin groove and two levels broach line lay respectively at central point up and down and with respect to central point, article two, vertically thin groove and two vertically broach line lay respectively at central point about and with respect to central point, described two horizontal thin grooves are by two the vertical midium line segment that intercepts of thin grooves grooves not, and the midium line segment that two vertically thin grooves are intercepted by two horizontal thin grooves is groove not; Article two, level broaches line and two and vertically broaches in the line separated, in separated distance be the length of glass substrate radius, two horizontal thin grooves, two vertically thin grooves, two levels broach line and two length that vertically broach line are the radius length of glass substrate.

Beneficial effect of the present invention

A kind of graticule for large-multiplying power continuous zooming camera system of the present invention, adopted the debud mode of two-wire clamp, benchmark electricity cross curve all will drop on length at every turn, between the two-wire of the picture of short focal length graticule, because of the length of graticule at large-multiplying power continuous zooming camera system, the line thickness of the picture of short focal length differs greatly, this just needs the picture of graticule that can be suitable with benchmark electricity cross curve thickness, no matter growing, during short focal length variations, all can see the picture of graticule " well " the word directrix suitable with the thickness of benchmark electricity " cross " line on the monitor, so that benchmark electricity " cross " line can be clipped between the two-wire of graticule when the burnt variation of length all the time, be easy to observer's accurate reading, improve the precision of aiming at debugging.

Description of drawings

Fig. 1 is the graticule structural representation of prior art;

Fig. 2 is in the prior art, and during long burnt work, the thin groove of graticule overlaps the synoptic diagram of the picture that monitor is seen with benchmark electricity " cross " line;

Fig. 3 is in the prior art, and during short burnt work, graticule broaches line and overlaps the synoptic diagram of the picture that monitor is seen with benchmark electricity " cross " line;

Fig. 4 is graticule structural representation of the present invention;

When Fig. 5 is the long burnt work of graticule of the present invention, the synoptic diagram of the picture that monitor is seen;

When Fig. 6 is the short burnt work of graticule of the present invention, the synoptic diagram of the picture that monitor is seen.

Among the figure, 1, glass substrate, 2, two broach line, and 3, central point, 4, two thin grooves, 5, two horizontal thin grooves, 6, two vertically thin grooves, 7, two levels broach line, and 8, two vertically broach line, and 9, benchmark electricity " cross " line.

Embodiment

Present embodiment provides a kind of graticule for large-multiplying power continuous zooming camera system, as shown in Figure 4, this graticule comprises glass substrate 1, article two, horizontal thin groove 5, article two, vertical thin groove 6, central point 3, article two, level broaches line 7, article two, vertically broach line 8, described central point 3 is engraved on the symcenter of glass substrate 1, article two, horizontal thin groove 5 and two levels broach line 7 lay respectively at central point 3 up and down and with respect to central point 3 symmetries, article two, vertically thin groove 6 and two vertically broach line 8 lay respectively at central point 3 about and with respect to central point 3 symmetries, described two horizontal thin grooves 5 are by two the vertical midium line segment that intercepts of thin grooves 6 grooves not, and the midium line segment that two vertically thin grooves 6 are intercepted by two horizontal thin grooves 5 is groove not; Article two, level broach line 7 and two vertically broach line 8 in separated, in separated distance be the length of glass substrate 1 radius, two horizontal thin grooves 5, two vertically thin grooves 6, two levels broach line 7 and two length that vertically broach line 8 are the radius length of glass substrate.

The described glass substrate of present embodiment is circular, the symcenter of two horizontal thin grooves 5 and two vertically thin groove 6 close glass substrates, and two levels broach line 7 and two edges that vertically broach line 8 close glass substrates.

The spacing ratio that described two levels of present embodiment broach the spacing of the spacing of line 7 or two spacings that vertically broach line 8 and two horizontal thin grooves 5 or two vertically thin grooves 6 equals the multiplying power of camera system, every level broach the width of the width of line or every width that vertically broaches line and every horizontal thin groove or every vertically carefully the width ratio of groove equal the multiplying power of camera system.

Graticule method for making of the present invention is the same with the method for common graticule, can adopt the common method of making graticule, such as methods such as process photography or groove processing, the concrete grammar of process photography is: at first according to the Patten drawing CAD drawing of Fig. 2, then prepare the motherboard substrate and put into the microscope alignment system, open the laser drawing instrument, start the plate-making program; The motherboard rear beginning photocopying technique that completes, at last that optical element and motherboard precision is compound, then expose; Optical element is put into the developer solution after stain.For the size of making figure, every horizontal thin groove of the present invention is identical with every vertically thin line width, is preferably 0.1mm, and the spacing of two horizontal thin grooves 5 is identical with the spacing of two vertically thin grooves 6, is preferably 0.26mm; Described every level broach line with every vertically to broach line width identical, be 10 times of the vertically thin line width of every horizontal thin groove or every, be preferably 1mm, the spacing that two levels broach line 7 is identical with two spacings that vertically broach line 8, is preferably 2.6mm.

The diameter of described central point 3 broaches line with every level or every width that vertically broaches line is identical, is preferably 1mm.

The groove degree of depth of the present invention is the same with common graticule, does not do requirement here, and glass substrate adopts material K9 glass, and size can be made as required.

When Fig. 5 is the long burnt work of graticule of the present invention, the synoptic diagram of the picture that monitor is seen, during long burnt imaging, the visual field is little, and two horizontal thin grooves 5, two vertically thin grooves 6, central point 3, two levels of part broach line 7 and two pictures that vertically broach line 8 of part in the middle of can mainly seeing;

When Fig. 6 is the short burnt work of graticule of the present invention, the synoptic diagram of the picture that monitor is seen, during short burnt imaging, the visual field is large, picture when meeting is burnt with length dwindles more than ten times, at this moment graticule is presented on the monitor as integral body, article two, horizontal thin groove 5 and two vertically thin groove 6 parts have not almost seen, can see that broaching line 7 and two with accurate benchmark electricity " cross " line 9, central point 3 that thickness is suitable, two levels vertically broaches line 8 imagings, can accomplish easily the two-wire clamp thus, finish the debugging work of aiming at.

Claims

1. graticule that is used for large-multiplying power continuous zooming camera system, it is characterized in that, this graticule comprises glass substrate (1), article two, horizontal thin groove (5), article two, vertical thin groove (6), central point (3), article two, level broaches line (7) and two and vertically broaches line (8), described central point (3) is engraved on the symcenter of glass substrate (1), article two, horizontal thin groove (5) and two levels broach line (7) lay respectively at central point (3) up and down and with respect to central point (3) symmetry, article two, vertically thin groove (6) and two vertically broach line (8) lay respectively at central point (3) about and with respect to central point (3) symmetry, described two horizontal thin grooves (5) are by two the vertical midium line segment that intercepts of thin grooves (6) grooves not, and the midium line segment that two vertically thin grooves (6) are intercepted by two horizontal thin grooves (5) is groove not; Article two, level broaches line (7) and two and vertically broaches in the line (8) separated, in separated distance be the length of glass substrate (1) radius, the vertically thin groove (6) of two horizontal thin grooves (5), two, two levels broach line (7) and two length that vertically broach line (8) are the radius length of glass substrate (1).

2. a kind of graticule for large-multiplying power continuous zooming camera system according to claim 1, it is characterized in that the spacing ratio that two levels broach the spacing of the spacing of line (7) or two spacings that vertically broach line (8) and two horizontal thin grooves (5) or two vertically thin grooves (6) equals the multiplying power of camera system.