CN103226234A - Method for adjusting optical axis of Pechan prism - Google Patents
Method for adjusting optical axis of Pechan prism Download PDFInfo
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- CN103226234A CN103226234A CN2013101109577A CN201310110957A CN103226234A CN 103226234 A CN103226234 A CN 103226234A CN 2013101109577 A CN2013101109577 A CN 2013101109577A CN 201310110957 A CN201310110957 A CN 201310110957A CN 103226234 A CN103226234 A CN 103226234A
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Abstract
The invention discloses a method for adjusting an optical axis of a Pechan prism, and belongs to the field of optical adjustment. The method comprises the steps as follows: taking an internal focusing telescope as a target generator; firstly adjusting the optical axis of the internal focusing telescope to be coaxial to a mechanical rotation axis of a Pechan prism assembly; then adjusting an incident plane of the Pechan prism through screws to be vertical to the optical axis of the internal focusing telescope, namely, the optical axis of the Pechan prism is parallel to the mechanical rotation axis; then radically translating the Pechan prism to enable the optical axis of the Pechan prism to be coaxial to the mechanical rotation axis. The method has the characteristics of simple structure of an adjusting instrument, convenience for erection, simplicity and convenience for the adjustment and strong operability, saves plenty of time for product assembly, improves the working efficiency of operators, and can be widely applied in adjustment and calibration to enable the optical axis of the Pechan prism to be coaxial to the mechanical rotation axis.
Description
Technical field
The invention belongs to optics adjustment field, relate generally to a kind of adjustment method of prism optical axis, especially the benhain prism optical axis adjustment method parallel with the mechanical rotation axle.
Background technology
The panorama point instrumentation generally adopt rotation head mirror assembly or down mirror assembly realize 360 ° of comprehensive scannings to target, thereby make the observer carry out omnibearing search and observation to target by eyepiece, but because the rotary part of panorama point instrumentation can bring picture when rotating rotation, be that the observer is when observing by eyepiece, the scenery of being seen produces rotation along with the rotation of point instrumentation rotary part, in order to eliminate this phenomenon, generally in the light path of instrument, increase the picture that disappears and revolve parts, eliminate this influence thereby make picture produce backward rotation.Dove prism commonly used and rotatable lens barrel or benhain prism and rotatable lens barrel constitute the picture that disappears and revolve parts, and Dove prism can only be used for parallel light path, and benhain prism can be used for parallel light path or non-parallel light path.Picture revolves parts for disappearing, require Dove prism optical axis or benhain prism optical axis highly to overlap with the machinery rotation axle of lens barrel, otherwise in actual use, the optical axis of Dove prism or benhain prism and machinery rotation axle coaxiality error can be through the amplifications of eyepiece system, during by eye-observation, system's imaging can produce beats, and error is big more, picture jumps over big, for comfortableness and the observation effect observed very big influence is arranged all.Therefore, revolve parts, require that benhain prism optical axis and machinery rotation axle coaxiality error are very little (generally to require it less than 30 ") for the benhain prism picture that disappears.
Chinese periodical " photoelectric project " the 18th volume the 6th interim " revolving the picture precision analysis and adorning calibration method of a benhain prism " literary composition discloses a kind of adjustment method of benhain prism optical axis, this method divides two steps to carry out adjustment, the first step, benhain prism is fixed on the turning axle, at benhain prism plane of incidence front end and near turning axle end face frame 1 " the instrument light pipe of band autocollimating eyepiece; rotation benhain prism; observe the reflection image jerk value of its graticule branches of the regular meridians Chinese prism plane of incidence by the eyepiece of instrument light pipe; if jerk value exceeds tolerance; then need repeatedly grinding benhain prism assembly conditioning ring until the graticule reflection image jerk value of instrument light pipe in tolerance; that is the normal of the benhain prism plane of incidence is optical axis and rotating shaft parallel, with pin benhain prism seat and conditioning ring is fixed together then.Second step, the instrument light pipe is fixed on the turning axle, at benhain prism outgoing side frame one microscope, rotation benhain prism assembly turning axle and by microscopic instrument light pipe graticule image jump amount whether within tolerance, if then need radially not adjust instrument light pipe graticule, satisfy franchise until instrument light pipe graticule image jump amount; Move axially the object lens of instrument light pipe again, make the rear of graticule image position in the benhain prism exit facet, pull down benhain prism, whether rotation benhain prism assembly turning axle and the graticule image jump amount by microscopic instrument light pipe be within tolerance, if do not satisfy franchise at the object lens that then need radially adjust the instrument light pipe until its graticule image jump amount; By the original position assembling benhain prism of pulling down, the rotation benhain prism and with the graticule branches of the regular meridians Chinese prism imaging jerk value of microscopic instrument light pipe whether within tolerance, if do not meet the demands then need radially adjusting the graticule image jump amount of benhain prism, at last the benhain prism seat be fixed on the turning axle with pin until the instrument light pipe.This shows, this method need repeatedly be regulated graticule and the object lens and the repeated disassembled and assembled benhain prism of instrument, and need repeatedly grinding benhain prism assembly conditioning ring, the debug process very complicated, and benhain prism will fix with pin, need hole on benhain prism seat and turning axle, and metal fillings that boring produces and greasy dirt can pollute benhain prism and have the risk that scratches benhain prism, poor operability, efficient is low.
Summary of the invention
The technical problem to be solved in the present invention is, at the deficiencies in the prior art, provides a kind of instrument to set up simply, debug process is easy, safe and reliable, efficient is high, can realize the adjustment method that the benhain prism optical axis is coaxial with the machinery rotation axle.
Adjustment method provided by the invention may further comprise the steps:
The first step, catoptron is fixed on the incident end of accurate benhain prism assembly, again accurate benhain prism assembly, contrast graticule, observation eyepiece are installed on the adjustable platform of leveling successively, the incident end of internal focusing telescope positive alignment benhain prism assembly is placed, particular location should can be seen catoptron clearly and be as the criterion when internal focusing telescope focuses on, require observation eyepiece can see the contrast graticule clearly when 0 diopter, the axis of the optical axis of internal focusing telescope, accurate benhain prism assembly, the center of contrast graticule and the optical axis of observation eyepiece should be located along the same line;
The benhain prism assembly contains two presses spiral shell, benhain prism, microscope base, gear, bearing, some steel balls, lens barrel, end cap, 12 screws, microscope base is the right cylinder that has rectangular through-hole, be arranged with two tapped through holes on its sidewall, axis hole one end of gear is provided with internal thread; Bearing is the cylindrical drum that the middle part has the outer shaft shoulder, and the both sides port of cylindrical drum all is processed with a circle chamfering; Lens barrel is cylindric, and its light input end has one section external thread, and light output end has the evagination edge, also is provided with four screws of circumference uniform distribution on the output end face of lens barrel.End cap the is uniform in a circumferential direction waist hole of four direction unanimity, four through holes and four screws, four screws and through hole are positioned at same circumference and neighbour;
The bearing sky is enclosed within on the lens barrel, and the one end is positioned on the inner side end on lens barrel evagination edge, and the other end is positioned on the inner side end of gear; Gear is threaded with lens barrel; Steel ball is covered with in the annular groove of bearing two chamfers and lens barrel and gear formation, has formed accurate benhain prism assembly thus;
The small end of benhain prism is near the ring flange of microscope base, and benhain prism two sides parallel with optical axis are one by one over against two tapped through holes of microscope base, and the pressure spiral shell is installed in described tapped through hole and benhain prism is compressed; Four through holes of end cap are connected by the output end face of corresponding four screws and microscope base, the threaded end that is installed in the screw in four screws of end cap contacts with the output end face of microscope base, the axis of two tapped through holes spatially keeps vertical on the waist length direction in described waist hole and the microscope base, and the output end face of waist hole and lens barrel is connected by corresponding four screws, has constituted complete benhain prism assembly thus;
Second step, regulate internal focusing telescope to the infinite distance, rotate accurate benhain prism assembly, the internal focusing telescope division line will appear on the graticule of internal focusing telescope after mirror reflects and make the autocollimatic picture of circular motion, whether the motion center of circle of observing this autocollimatic picture by the eyepiece of internal focusing telescope overlaps with the center of internal focusing telescope graticule, if do not overlap, then regulate the orientation and the luffing angle handwheel of internal focusing telescope, until the centre of motion of autocollimatic picture and overlapping of graticule, at this moment, the internal focusing telescope optical axis is parallel with the machinery rotation axle of accurate benhain prism assembly;
The 3rd step, the focusing handwheel of regulating internal focusing telescope is imaged on the graticule of internal focusing telescope clearly until the cross-graduation of catoptron, rotate accurate benhain prism assembly, the cross-graduation picture of catoptron will be made circular motion, at this moment, whether the motion center of circle of observing this picture by the eyepiece of internal focusing telescope overlaps with the center of internal focusing telescope graticule, if do not overlap, then regulate the height and the left and right sides translation handwheel of internal focusing telescope, until the centre of motion of catoptron cross-graduation picture and overlapping of graticule, this moment, the internal focusing telescope optical axis was coaxial with the machinery rotation axle of accurate benhain prism assembly;
The 4th step, take off catoptron from accurate benhain prism assembly, accurate benhain prism assembled is become complete benhain prism assembly; Regulate internal focusing telescope to the infinite distance, rotate the benhain prism assembly, the autocollimatic picture that the internal focusing telescope division line branches of the regular meridians Chinese prism plane of incidence reflects the back and makes circular motion will appear on the graticule of internal focusing telescope, whether the diameter of observing the movement locus of this autocollimatic picture by the eyepiece of internal focusing telescope exceeds tolerance, then regulate the screw that links to each other or contact with microscope base if exceed tolerance, movement locus diameter until this autocollimatic picture satisfies the franchise requirement, and promptly the optical axis of benhain prism is parallel with the machinery rotation axle of benhain prism assembly;
The 5th step, regulate the focusing handwheel of internal focusing telescope, be imaged on the contrast graticule after making the division line branches of the regular meridians Chinese prism transmission of internal focusing telescope, rotate the benhain prism assembly, whether the movement locus center of circle of making the graduation picture of circular motion by observation eyepiece observation internal focusing telescope overlaps with the center of contrast graticule, if do not overlap, then radiai adjustment contrasts graticule, until coincidence, judge that by the graduation value of contrast graticule whether the diameter of circular motion track of graduation picture of internal focusing telescope is in tolerance then, if exceed tolerance, then regulate end cap until satisfying tolerance along the length direction in the set waist of end cap hole, promptly the optical axis of benhain prism is coaxial with the machinery rotation axle of benhain prism assembly.
Beneficial effect of the present invention is embodied in the following aspects:
(1) the present invention utilizes internal focusing telescope can simulate the characteristic of infinite distance and limited target far away, only need the rotation focusing first run can change image planes, and can carry out optical axis by the angular adjustment first run and the translational adjustment first run and regulate, compared with prior art, easy and simple to handle.
(2) the present invention utilizes the adjustment screw to carry out the adjustment of benhain prism optical axis, compared with prior art, has omitted conditioning ring, need not the repeated disassembled and assembled benhain prism, and adjustment process is easy, high efficiency.
(3) the present invention utilizes the adjustment screw to carry out the fixing of benhain prism, need not process the metal working part, cause the pollution and the damage of benhain prism when having avoided machining, and operability is stronger.
(4) the concentric circles delineation form of known scale value is arranged in the present invention's graduation that will contrast graticule, compares with the delineation of prior art cross, is easy to reading, and jerk value that can real-time judge benhain prism optical axis, has improved work efficiency effectively.
Description of drawings
Fig. 1 is that the used adjusting instrument of adjustment method of the present invention is formed synoptic diagram.
Fig. 2 is the structural representation of the assembly of benhain prism shown in Fig. 1.
Fig. 3 is the structural representation of end cap shown in Fig. 2.
Fig. 4 is the connection diagram of microscope base shown in Fig. 2 and end cap.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and preferred embodiment.
The adjustment method of benhain prism optical axis provided by the invention comprises the steps.
The first step is according to the instrument that sets up shown in Figure 1.At first combined diagram level is positioned on the adjustable platform 2, makes the bubble of combined diagram level placed in the middle by the knob of regulating on the adjustable base 8; Catoptron 4 is fixed on the incident end of accurate benhain prism assembly, again accurate benhain prism assembly, contrast graticule 6, observation eyepiece 7 are installed on the fixed base plate 3 that is connected with adjustable platform 2 successively, the incident end of internal focusing telescope 1 positive alignment benhain prism assembly is placed, particular location should can be seen catoptron 4 clearly and be as the criterion when it focuses on, require observation eyepiece 7 can see contrast graticule 6 clearly when 0 diopter (SD), the axis of the optical axis of internal focusing telescope 1, accurate benhain prism assembly, the center of contrast graticule 6 and the optical axis of observation eyepiece 7 should be located along the same line.
Internal focusing telescope 1 is selected the PTW-1A type for use, is produced by Huadong Optical Instrument Factory.Adjustable platform 2 is the two-dimensional adjustable platform, can axially reach the radially angular adjustment of both direction.Catoptron 4 is carved with the plane mirror of cross-graduation for the center.Graduation groove form on the contrast graticule 6 is a concentric circles, and wherein minimum diameter of a circle scale is 20 ", adjacent circular diameter differs 20 ", and the radial translation about can carrying out just.The enlargement ratio of observation eyepiece 7 is 6 times, the diopter range of adjustment is-and 6SD ~+5SD.
Benhain prism assembly 5 contains two presses spiral shell 5-1, benhain prism 5-2, microscope base 5-3, gear 5-4, bearing 5-5, some steel ball 5-6, lens barrel 5-7, end cap 5-8,12 screw 5-9(referring to Fig. 2).Microscope base 5-3 is the right cylinder that has rectangular through-hole, is arranged with the tapped through hole of two M10 on its sidewall, and its light output end is provided with and has four uniform screws on ring flange and the ring flange.Axis hole one end of gear 5-4 is provided with internal thread; Bearing 5-5 is the cylindrical drum that the middle part has the outer shaft shoulder, and the both sides port of cylindrical drum all is processed with 2 * 45 ° chamfering; Lens barrel 5-7 is cylindric, and the internal diameter of its external diameter and bearing 5-5 differs 2mm, and its light input end has one section external thread, and light output end has the evagination edge, also is provided with four screws of circumference uniform distribution on the output end face of lens barrel 5-7.End cap 5-8 the is uniform in a circumferential direction waist hole 5-8-1 of four direction unanimity, four through hole 5-8-2 and four screw 5-8-3(are referring to Fig. 3), center, waist hole is corresponding with the circumference at the screw place of lens barrel 5-7 diametrically, four through hole centers are corresponding with the circumference at four screw places of microscope base 5-3 diametrically, and four screws and through hole are positioned at same circumference and neighbour.
Bearing 5-5 sky is enclosed within on the lens barrel 5-7, and the one end is positioned on the inner side end on lens barrel 5-7 evagination edge, and the other end is positioned on the inner side end of gear; Gear 5-4 is threaded with lens barrel 5-7; Steel ball 5-6 is covered with in the annular groove of bearing 5-5 two chamfers and lens barrel 5-7 and gear 5-4 formation, has formed accurate benhain prism assembly thus.Lens barrel 5-7, bearing 5-5, gear 5-4 and steel ball 5-6 have then constituted the rotary axis system of benhain prism assembly 5.
The small end of benhain prism 5-2 is near the ring flange of microscope base 5-3, and benhain prism 5-2 two sides parallel with optical axis are pressed spiral shell 5-1 to be installed on the microscope base 5-3 and with benhain prism 5-2 and compressed one by one over against two M10 tapped through holes of microscope base 5-3.Microscope base 5-3 that benhain prism 5-2 is housed by end cap 5-8 and after accurate benhain prism assembly is connected, has just been constituted complete benhain prism assembly 5.That is the waist length direction that end cap 5-8 goes up waist hole 5-8-1 spatially keeps vertical with the axis of last two tapped through holes of microscope base 5-3, and the end that waist hole 5-8-1 and lens barrel 5-7 have an evagination edge is connected by corresponding four screws; Four the equal mounting screws of screw 5-8-3 of end cap 5-8 and the threaded end of each screw contact with the end face of microscope base 5-3; Four through hole 5-8-2 places of end cap 5-8 are connected by the screw on corresponding screw 5-9 and the microscope base 5-3 ring flange.
Second step, regulate internal focusing telescope 1 to the infinite distance, rotate accurate benhain prism assembly, the internal focusing telescope division line will appear on the graticule of internal focusing telescope 1 after catoptron 4 reflection and make the autocollimatic picture of circular motion, whether the motion center of circle of observing this autocollimatic picture by the eyepiece of internal focusing telescope 1 overlaps with the center of internal focusing telescope graticule, if do not overlap, then regulate the orientation and the luffing angle handwheel of internal focusing telescope 1, until the centre of motion of autocollimatic picture and overlapping of graticule, at this moment, internal focusing telescope 1 optical axis is parallel with the machinery rotation axle of accurate benhain prism assembly.
Under the optical axis of internal focusing telescope 1 and the machinery rotation axle of accurate benhain prism assembly overlaps and catoptron 4 is vertical with the optical axis of internal focusing telescope the perfect condition, the internal focusing telescope division line should overlap with the graduation center of internal focusing telescope through the autocollimatic picture of catoptron 4, but because the influence of mismachining tolerance and alignment error, the machinery rotation axle with accurate benhain prism assembly was not vertical when catoptron 4 was fixed on the incident end of accurate benhain prism assembly, therefore, the internal focusing telescope division line will move in a circle along with the rotation of catoptron 4 through the autocollimatic picture of catoptron 4, if the center of circle of this circular motion does not overlap with the graduation center of internal focusing telescope, illustrate that the machinery rotation axle of the optical axis of internal focusing telescope 1 and accurate benhain prism assembly is not parallel.
The 3rd step, the focusing handwheel of regulating internal focusing telescope 1 is imaged on the graticule of internal focusing telescope clearly until the cross-graduation of catoptron 4, rotate accurate benhain prism assembly, the cross-graduation picture of catoptron 4 will be made circular motion, at this moment, whether the motion center of circle of observing this picture by the eyepiece of internal focusing telescope 1 overlaps with the center of internal focusing telescope graticule, if do not overlap, then regulate the height and the left and right sides translation handwheel of internal focusing telescope 1, until the centre of motion of catoptron 4 cross-graduation pictures and overlapping of graticule, this moment, internal focusing telescope 1 optical axis was coaxial with the machinery rotation axle of accurate benhain prism assembly.
The 4th step, take off catoptron 4 from accurate benhain prism assembly, accurate benhain prism assembled is become complete benhain prism assembly 5; Regulate internal focusing telescope 1 to the infinite distance, rotate benhain prism assembly 5, the autocollimatic picture that the internal focusing telescope division line branches of the regular meridians Chinese prism 5-2 plane of incidence reflects the back and makes circular motion will appear on the graticule of internal focusing telescope 1, whether the diameter of observing the movement locus of this autocollimatic picture by the eyepiece of internal focusing telescope 1 exceeds tolerance, then regulate two groups of screw 5-9 that link to each other or contact with microscope base 5-3 if exceed tolerance, movement locus diameter until this autocollimatic picture satisfies the franchise requirement, and promptly the optical axis of benhain prism 5-2 is parallel with the machinery rotation axle of benhain prism assembly 5.
Link to each other with microscope base 5-3 and uniform four screw 5-9 with contact with microscope base 5-3 and four uniform screw 5-9 are corresponding one by one adjacent, adjacent pair of screws role is to hold out against and strain microscope base 5-3.Two pairs of screws that adjustment is positioned on the microscope base 5-3 vertical direction can make microscope base 5-3 drive benhain prism 5-2 be offset and make the optical axis of benhain prism 5-2 parallel with the machinery rotation axle of benhain prism assembly 5 in pitch orientation on pitch orientation; Two pairs of screws that adjustment is positioned on the microscope base 5-3 horizontal direction can make microscope base 5-3 drive benhain prism 5-2 be offset and make the optical axis of benhain prism 5-2 parallel with the machinery rotation axle of benhain prism assembly 5 in the horizontal direction in the horizontal direction, finally make the optical axis of benhain prism 5-2 parallel with the machinery rotation axle of benhain prism assembly 5.
The 5th step, regulate the focusing handwheel of internal focusing telescope 1, be imaged on the contrast graticule 6 after making the division line branches of the regular meridians Chinese prism 5-2 transmission of internal focusing telescope 1, rotate benhain prism assembly 5, whether the movement locus center of circle of making the graduation picture of circular motion by observation eyepiece 7 observation internal focusing telescopes 1 overlaps with the center of contrast graticule 6, if do not overlap, then radiai adjustment contrasts graticule 6, until coincidence, judge that by the graduation value of contrast graticule 6 whether the diameter of circular motion track of graduation picture of internal focusing telescope 1 is in tolerance then, if exceed tolerance, then regulate end cap until satisfying tolerance along the length direction in the set waist of end cap 5-8 hole, promptly the optical axis of benhain prism 5-2 is coaxial with the machinery rotation axle of benhain prism assembly 5.
Claims (1)
1. the adjustment method of a benhain prism optical axis is characterized in that, this method may further comprise the steps:
The first step, catoptron (4) is fixed on the incident end of accurate benhain prism assembly, again with accurate benhain prism assembly, contrast graticule (6), observation eyepiece (7) is installed on the adjustable platform (2) of leveling successively, the incident end of internal focusing telescope (1) positive alignment benhain prism assembly is placed, particular location should can be seen catoptron (4) clearly and be as the criterion when internal focusing telescope (1) focuses on, require observation eyepiece (7) when 0 diopter, can see contrast graticule (6), the optical axis of internal focusing telescope (1) clearly, the axis of accurate benhain prism assembly, the center of contrast graticule (6) and the optical axis of observation eyepiece (7) should be located along the same line;
Benhain prism assembly (5) contains two presses spiral shell (5-1), benhain prism (5-2), microscope base (5-3), gear (5-4), bearing (5-5), some steel balls (5-6), lens barrel (5-7), end cap (5-8), 12 screws (5-9), microscope base (5-3) is for having the right cylinder of rectangular through-hole, be arranged with two tapped through holes on its sidewall, axis hole one end of gear (5-4) is provided with internal thread; Bearing (5-5) has the cylindrical drum of the outer shaft shoulder for the middle part, and the both sides port of cylindrical drum all is processed with a circle chamfering; Lens barrel (5-7) is cylindric, and its light input end has one section external thread, and light output end has the evagination edge, also is provided with four screws of circumference uniform distribution on the output end face of lens barrel (5-7).End cap (5-8) the is uniform in a circumferential direction waist hole (5-8-1) of four direction unanimity, four through holes (5-8-2) and four screws (5-8-3), four screws and through hole are positioned at same circumference and neighbour;
Bearing (5-5) sky is enclosed within on the lens barrel (5-7), and the one end is positioned on the inner side end on lens barrel (5-7) evagination edge, and the other end is positioned on the inner side end of gear; Gear (5-4) is threaded with lens barrel (5-7); Steel ball (5-6) is covered with in the annular groove of bearing (5-5) two chamfers and lens barrel (5-7) and gear (5-4) formation, has formed accurate benhain prism assembly thus;
The small end of benhain prism (5-2) is near the ring flange of microscope base (5-3), benhain prism (5-2) two sides parallel with optical axis are one by one over against two tapped through holes of microscope base (5-3), press spiral shell (5-1) to be installed in described tapped through hole and benhain prism (5-2) is compressed; Four through holes (5-8-2) of end cap (5-8) are connected by the output end face of corresponding four screws and microscope base (5-3), the threaded end that is installed in the screw in four screws of end cap (5-8) (5-8-3) contacts with the output end face of microscope base (5-3), the waist length direction in described waist hole (5-8-1) spatially keeps vertical with the axis of last two tapped through holes of microscope base (5-3), and waist hole (5-8-1) is connected by corresponding four screws with the output end face of lens barrel (5-7), constituted complete benhain prism assembly (5) thus;
Second step, regulate internal focusing telescope (1) to the infinite distance, rotate accurate benhain prism assembly, the internal focusing telescope division line will appear on the graticule of internal focusing telescope (1) after catoptron (4) reflection and make the autocollimatic picture of circular motion, whether the motion center of circle of observing this autocollimatic picture by the eyepiece of internal focusing telescope (1) overlaps with the center of internal focusing telescope graticule, if do not overlap, then regulate the orientation and the luffing angle handwheel of internal focusing telescope (1), until the centre of motion of autocollimatic picture and overlapping of graticule, at this moment, internal focusing telescope (1) optical axis is parallel with the machinery rotation axle of accurate benhain prism assembly;
The 3rd step, the focusing handwheel of regulating internal focusing telescope (1) is imaged on the graticule of internal focusing telescope clearly until the cross-graduation of catoptron (4), rotate accurate benhain prism assembly, the cross-graduation picture of catoptron (4) will be made circular motion, at this moment, whether the motion center of circle of observing this picture by the eyepiece of internal focusing telescope (1) overlaps with the center of internal focusing telescope graticule, if do not overlap, then regulate the height and the left and right sides translation handwheel of internal focusing telescope (1), until the centre of motion of catoptron (4) cross-graduation picture and overlapping of graticule, this moment, internal focusing telescope (1) optical axis was coaxial with the machinery rotation axle of accurate benhain prism assembly;
The 4th step, take off catoptron (4) from accurate benhain prism assembly, accurate benhain prism assembled is become complete benhain prism assembly (5); Regulate internal focusing telescope (1) to the infinite distance, rotate benhain prism assembly (5), the autocollimatic picture that internal focusing telescope division line branches of the regular meridians Chinese prism (5-2) plane of incidence reflects the back and makes circular motion will appear on the graticule of internal focusing telescope (1), whether the diameter of observing the movement locus of this autocollimatic picture by the eyepiece of internal focusing telescope (1) exceeds tolerance, then regulate the screw that links to each other or contact with microscope base (5-3) if exceed tolerance, movement locus diameter until this autocollimatic picture satisfies the franchise requirement, and promptly the optical axis of benhain prism (5-2) is parallel with the machinery rotation axle of benhain prism assembly (5);
The 5th step, regulate the focusing handwheel of internal focusing telescope (1), be imaged on the contrast graticule (6) after making division line branches of the regular meridians Chinese prism (5-2) transmission of internal focusing telescope (1), rotate benhain prism assembly (5), whether the movement locus center of circle of making the graduation picture of circular motion by observation eyepiece (7) observation internal focusing telescope (1) overlaps with the center of contrast graticule (6), if do not overlap, then radiai adjustment contrasts graticule (6), until coincidence, judge that by the graduation value of contrast graticule (6) whether the diameter of circular motion track of graduation picture of internal focusing telescope (1) is in tolerance then, if exceed tolerance, then regulate end cap until satisfying tolerance along the length direction in the set waist of end cap (5-8) hole, promptly the optical axis of benhain prism (5-2) is coaxial with the machinery rotation axle of benhain prism assembly (5).
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| CN113624451A (en) * | 2021-07-08 | 2021-11-09 | 中国电子科技集团公司第十一研究所 | Poehan prism optical axis consistency detection assembly and method |
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| CN114236867A (en) * | 2021-12-03 | 2022-03-25 | 西安应用光学研究所 | Method for accurately adjusting concentricity of telephoto folding axis lens group |
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