CN210293622U - Optical wide-range high-precision focal length measuring instrument - Google Patents
Optical wide-range high-precision focal length measuring instrument Download PDFInfo
- Publication number
- CN210293622U CN210293622U CN201921103721.XU CN201921103721U CN210293622U CN 210293622 U CN210293622 U CN 210293622U CN 201921103721 U CN201921103721 U CN 201921103721U CN 210293622 U CN210293622 U CN 210293622U
- Authority
- CN
- China
- Prior art keywords
- guide rail
- focal length
- range high
- measuring instrument
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses an optics wide range high accuracy focus measuring apparatu relates to focus measuring apparatu technical field, exists parallax, aims at error and people poor at measuring longer focus in-process for solving current focus measuring apparatu for the result that records and repeatability often can not reach the problem of higher precision. The utility model discloses a lens holder, including guide rail base, frame, lens holder, guide rail base's below is provided with horizontal adjusting screw, and horizontal adjusting screw is provided with two, guide rail base's top is provided with the support, and the support is provided with two, the collimator is installed to the top of support, the inside of collimator is provided with the picture frame, the internally mounted of picture frame has the glass roc board, one side of glass roc board is provided with the area source, one side of support is provided with the guide rail, the top of guide rail is provided with the connecting plate, the top of connecting plate is provided.
Description
Technical Field
The utility model relates to a focus measuring apparatu technical field specifically is an optics wide range high accuracy focus measuring apparatu.
Background
With the advance of science and technology, more and more optical focal length measuring instruments are appeared in the market, optical lenses and systems are widely used as image or energy converters, and the amplification and focusing functions of the conversion process mainly depend on the focal length of the optical system. The focal length is the most important parameter of the optical system, and the focal length is measured by a multi-purpose focimeter. The traditional focal length instrument adopts a glass compass plate (plate glass engraved with a plurality of pairs of marks with known intervals) to be arranged on a focal plane of a collimating objective, the glass compass plate presents parallel light after being illuminated, a primary image is formed on the focal plane of a detected optical system, a microscope is arranged behind the detected optical system, a proper microscope objective is selected from a plurality of microscope objectives with known multiplying powers, the microscope objective and a detector are moved, the primary image is converted into a secondary real image to be imaged on a receiving surface of the detector, the intervals of the mark images are read on the detector, the focal length of the detected optical system is obtained, and the measuring accuracy can reach 0.3 percent under an ideal condition.
However, the existing focal length measuring instrument has parallax error, collimation error and human error in the process of measuring a longer focal length, so that the measured result and repeatability often cannot reach higher precision; therefore, the existing requirements are not met, and an optical wide-range high-precision focal length measuring instrument is provided for the requirement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an optics wide range high accuracy focus measuring apparatu to it has parallax error, looks after error and people poor to propose the focus measuring apparatu in the longer focus in-process of measurement in solving above-mentioned background art, makes the result that records and repeatability often can not reach the current problem of higher precision.
In order to achieve the above object, the utility model provides a following technical scheme: an optical wide-range high-precision focal length measuring instrument comprises a guide rail base, wherein two horizontal adjusting screws are arranged below the guide rail base, two supports are arranged above the guide rail base, two collimator tubes are arranged above the supports, a picture frame is arranged inside the collimator tubes, a glass rib plate is arranged inside the picture frame, a surface light source is arranged on one side of the glass rib plate, a guide rail is arranged on one side of each support, a connecting plate is arranged above the guide rail, a connecting frame is arranged above the connecting plate, a lens holder is arranged above the connecting frame, a sliding guide rail is arranged on one side of the guide rail, a sliding support plate is arranged above the sliding guide rail, a supporting block is arranged above the sliding support plate, and a fixed block is arranged above the supporting block, the camera is arranged on one side of the fixing block, the microscope tube is arranged on the other side of the fixing block, the microscope objective is arranged on one side of the microscope tube, the supporting frame is arranged on one side of the supporting block and fixedly connected with the microscope tube, and the guide rail adjusting wheel is arranged at the front end of the supporting block.
Preferably, horizontal bubbles are arranged on two sides above the guide rail base.
Preferably, one side of each of the two brackets is provided with a limiting block.
Preferably, one side of the connecting plate is provided with a double-shaft inclined table.
Preferably, the front end face of the guide rail base is provided with scale marks.
Preferably, the front end of the support frame is provided with a focal length fine adjustment wheel.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a setting of biax sloping platform and lens holder is with the clamping of reflection of light lens on the lens holder, and rotatory reflection of light lens guarantees that reflection of light lens hugs closely in the terminal surface of holder, makes measured lens and collimator coaxial basically, and the biax sloping platform plays the effect of biax slope adjustment, and some line face structure decides its high accuracy, makes the measuring degree of accuracy higher.
2. The support frame is connected with the microscope objective, the front end of the support frame is provided with a focal length fine adjustment wheel for adjusting the focal length of the lens, the support frame and the measured reflective lens swing left and right and focus is adjusted simultaneously, and the principal point and focus of the lens can be accurately found.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the collimator of the present invention;
FIG. 3 is a schematic view of the enlarged structure of the part A of the present invention;
in the figure: 1. a guide rail base; 2. a horizontal adjustment screw; 3. horizontal bubbles; 4. a support; 5. a collimator; 501. a glass rib plate; 502. a surface light source; 503. a mirror frame; 6. a limiting block; 7. a sliding guide rail; 8. a lens holder; 9. a sliding support plate; 10. a support block; 11. adjusting wheels by guide rails; 12. a support frame; 13. a focal length fine-tuning wheel; 14. a microscope objective; 15. a microscope tube; 16. a fixed block; 17. A camera; 18. a connecting plate; 19. a biaxial inclination table; 20. a connecting frame; 21. a guide rail; 22. scale lines are marked.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, the present invention provides an embodiment: an optical wide-range high-precision focal length measuring instrument comprises a guide rail base 1, wherein two horizontal adjusting screws 2 are arranged below the guide rail base 1, two supports 4 are arranged above the supports 4, a collimator 5 is arranged above the supports 4, a mirror frame 503 is arranged inside the collimator 5, a glass rib plate 501 is arranged inside the mirror frame 503, a surface light source 502 is arranged on one side of the glass rib plate 501, a guide rail 21 is arranged on one side of the supports 4, a connecting plate 18 is arranged above the guide rail 21, a connecting frame 20 is arranged above the connecting plate 18, a lens holder 8 is arranged above the connecting frame 20 and used for clamping a reflective lens, a sliding guide rail 7 is arranged on one side of the guide rail 21, a sliding support plate 9 is arranged above the sliding guide rail 7, and a support block 10 is arranged above the sliding support plate 9, a fixed block 16 is arranged above the supporting block 10, a camera 17 is arranged on one side of the fixed block 16, a microscope tube 15 is arranged on the other side of the fixed block 16, a microscope objective 14 is arranged on one side of the microscope tube 15, a supporting frame 12 is arranged on one side of the supporting block 10, the supporting frame 12 is fixedly connected with the microscope tube 15, and a guide rail adjusting wheel 11 is arranged at the front end of the supporting block 10, so that the supporting block 10 can horizontally move to a proper position on the sliding guide rail 7.
Further, horizontal bubbles 3 are arranged on two sides above the guide rail base 1, and the horizontal bubbles 3 are used for detecting whether the installation surface of the focal length measuring instrument or the base is horizontal or not and measuring the inclination direction and the angle.
Furthermore, one side of two supports 4 all is provided with stopper 6, and stopper 6 has played spacing effect to support 4.
Further, a biaxial inclination table 19 is provided on one side of the connecting plate 18, and the biaxial inclination table 19 functions to adjust the biaxial inclination, and the high accuracy is determined by the point-line-surface structure.
Furthermore, the front end face of the guide rail base 1 is provided with scale marks 22, and the scale marks 22 are convenient for accurately controlling the reflection lens to slide on the guide rail base 1 on the supporting platform.
Further, the front end of the support frame 12 is provided with a focal length fine adjustment wheel 13, and the focal length fine adjustment wheel 13 plays a role in adjusting the focal length, so that the accuracy and precision of measurement are improved.
The working principle is as follows: when in use, the support 4, the guide rail 21 and the sliding guide rail 7 on the guide rail base 1 are horizontally moved to proper positions, the reflective lens is clamped on the lens holder 8, the reflective lens is rotated to ensure that the reflective lens is tightly attached to the end surface of the holder, the measured lens and the collimator 5 are basically coaxial, the double-shaft inclined table 19 plays a role of double-shaft inclination adjustment, the high precision of the reflective lens is determined by a point-line surface structure, the measurement accuracy is higher, the sliding guide rail 7 is provided with the support frame 12, the support frame 12 is connected with the microscope objective 14, the front end of the support frame 12 is provided with the focal length fine adjustment wheel 13 for adjusting the focal length, the support frame 12 and the measured reflective lens swing left and right and focus simultaneously, the principal point and the focus of the lens can be accurately found, in order to accurately position the principal point and the focus, the horizontal bubble 3 is arranged above the guide rail base 1, the horizontal adjustment screw 2 is arranged, the device is used for detecting whether the installation surface or the base of the focal length measuring instrument is horizontal or not, and detecting the inclination direction and the angle, so that the measuring accuracy of a large range is higher.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an optics wide range high accuracy focus measuring apparatu, includes guide rail base (1), its characterized in that: the guide rail structure is characterized in that horizontal adjusting screws (2) are arranged below the guide rail base (1), two horizontal adjusting screws (2) are arranged, supports (4) are arranged above the guide rail base (1), two supports (4) are arranged on the supports, a collimator (5) is installed above each support (4), a mirror frame (503) is arranged inside each collimator (5), a glass rib plate (501) is installed inside each mirror frame (503), a surface light source (502) is arranged on one side of each glass rib plate (501), a guide rail (21) is arranged on one side of each support (4), a connecting plate (18) is arranged above each guide rail (21), a connecting frame (20) is arranged above each connecting plate (18), a lens holder (8) is installed above each connecting frame (20), and a sliding guide rail (7) is arranged on one side of each guide rail (21), the microscope is characterized in that a sliding supporting plate (9) is arranged above the sliding guide rail (7), a supporting block (10) is arranged above the sliding supporting plate (9), a fixed block (16) is arranged above the supporting block (10), a camera (17) is arranged on one side of the fixed block (16), a microscope tube (15) is arranged on the other side of the fixed block (16), a microscope objective (14) is arranged on one side of the microscope tube (15), a supporting frame (12) is arranged on one side of the supporting block (10), the supporting frame (12) is fixedly connected with the microscope tube (15), and a guide rail adjusting wheel (11) is arranged at the front end of the supporting block (10).
2. An optical wide-range high-precision focal length measuring instrument according to claim 1, wherein: horizontal bubbles (3) are arranged on two sides above the guide rail base (1).
3. An optical wide-range high-precision focal length measuring instrument according to claim 1, wherein: and one side of each of the two brackets (4) is provided with a limiting block (6).
4. An optical wide-range high-precision focal length measuring instrument according to claim 1, wherein: and a double-shaft inclined table (19) is arranged on one side of the connecting plate (18).
5. An optical wide-range high-precision focal length measuring instrument according to claim 1, wherein: and the front end face of the guide rail base (1) is provided with scale marks (22).
6. An optical wide-range high-precision focal length measuring instrument according to claim 1, wherein: the front end of the support frame (12) is provided with a focal length fine adjustment wheel (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921103721.XU CN210293622U (en) | 2019-07-15 | 2019-07-15 | Optical wide-range high-precision focal length measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921103721.XU CN210293622U (en) | 2019-07-15 | 2019-07-15 | Optical wide-range high-precision focal length measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210293622U true CN210293622U (en) | 2020-04-10 |
Family
ID=70102287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921103721.XU Active CN210293622U (en) | 2019-07-15 | 2019-07-15 | Optical wide-range high-precision focal length measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210293622U (en) |
-
2019
- 2019-07-15 CN CN201921103721.XU patent/CN210293622U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113029009B (en) | Double-visual-angle vision displacement measurement system and method | |
| CN108871207B (en) | Photogrammetry reference ruler length calibration device and use method | |
| CN107607041A (en) | One kind is used for six efficient measurement apparatus of geometric error of turntable | |
| CN104749901A (en) | Focusing and leveling device | |
| CN210293622U (en) | Optical wide-range high-precision focal length measuring instrument | |
| CN204314056U (en) | A kind of focimeter | |
| CN112284984B (en) | Solid surface energy measuring device and method based on light reflection | |
| CN206058718U (en) | Optical element coaxial adjustment experimental provision | |
| CN204479187U (en) | Based on the collimated light beam detector of two pentaprism | |
| CN111060293A (en) | Focal length testing device | |
| CN111735401A (en) | High-precision thickness measurement method and device for large-size object | |
| CN219284231U (en) | Glass tube straightness measuring device | |
| CN214333751U (en) | Indoor virtual baseline verification system for handheld laser range finder | |
| CN212513560U (en) | Portable light path collimating device of laser beam quality measuring system | |
| TW201821860A (en) | Focusing and leveling device | |
| CN207936924U (en) | The comparative method for measuring device of optical element larger radius of curvature | |
| CN208171565U (en) | A kind of spherical reflector focal length detection device | |
| CN203747928U (en) | Detection device | |
| CN215296620U (en) | Wide-range distortion measuring device | |
| CN113405782A (en) | Wide-range distortion measuring device | |
| CN220872765U (en) | Comprehensive debugging device for immersion objective | |
| CN215726718U (en) | Numerical aperture test system | |
| CN110657823A (en) | Indoor image type plumb aligner calibrating device | |
| CN213632617U (en) | Device for realizing high precision of optical transfer function measuring instrument | |
| CN210893618U (en) | Multifunctional novel optical focal length measuring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221102 Address after: 2008-9, Floor 2, No. 108 Daguang Road, Qinhuai District, Nanjing, Jiangsu Province, 210007 Patentee after: Jiangsu Yunyang Instrument Equipment Co.,Ltd. Address before: 210014 810A, Building B, Building 4, Nanjing Baixia Hi tech Industrial Park, No. 6, Yongzhi Road, Qinhuai District, Nanjing, Jiangsu Patentee before: NANJING KEHAIREN PHOTOELECTRIC TECHNOLOGY Co.,Ltd. |