CN114518216A - Eye point distance measuring device for checking optical sight product - Google Patents
Eye point distance measuring device for checking optical sight product Download PDFInfo
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- CN114518216A CN114518216A CN202111647383.8A CN202111647383A CN114518216A CN 114518216 A CN114518216 A CN 114518216A CN 202111647383 A CN202111647383 A CN 202111647383A CN 114518216 A CN114518216 A CN 114518216A
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- observation mirror
- measuring device
- guide rail
- distance measuring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses an eyepoint distance measuring device for detecting an optical sight product, which comprises a base, wherein a height assembly and a lifting support for placing a product to be measured are respectively arranged on the base, a guide rail is arranged at the upper part of the height assembly, a moving frame for fixing an observation mirror is arranged on the guide rail, the observation mirror freely moves on the guide rail by being held by hands, a small hole is formed in the position, close to the product to be measured, of the observation mirror, and the optical axes of the small hole, the observation mirror and the product to be measured are in a coaxial state during measurement; the guide rail is close to the lifting support terminal surface and is equipped with the benchmark piece, the benchmark piece is close to the bottom and is fixed with the grating chi that can show product measurement information, is close to the fixed steel chi that reflects removal frame displacement distance in top, the benchmark piece terminal surface coincides with the datum point of grating chi and steel chi respectively. Compared with the prior art, the eye point distance detection device has the advantages of simple structure, reasonable design, simplicity and quickness in detecting the eye point distance, and difficulty in fatigue of human eyes, and has important significance for improving technical indexes of aiming device products.
Description
Technical Field
The invention relates to the field of aiming product production inspection, in particular to an eyepoint distance measuring device for inspecting an optical aiming product.
Background
The detection of the eye point distance is an important technical index of low-light level sighting telescope and infrared thermography sighting telescope products in the processes of development, production and inspection, and according to the definition of the eye point distance: the intersection point of the principal ray and the optical axis of the light beam emitted by the object point at the edge of the field of view is called the 'eye point' of the product; the distance between the eye point and the top point of the eyepiece is called the eye point distance, and the eye point position (A) is the exit pupil position corresponding to the oblique light beam at the edge of the view field and is also the intersection point of the principal ray emitted by the object point at the edge of the view field and the optical axis. It is clear that the human eye can only see the object points at the edge of the field of view if they are placed at this position, as shown in fig. 1. If the eye is not placed at the point A (eyepoint) but at the point B or the point C, the light beam at the edge of the visual field can not enter the eye, the eyepoint reflects the characteristics of the edge of the visual field, the eyepoint position is the optimum observation position of the eye, the L is the eyepoint distance, and the eyepoint is the distance between the eyepoint and the top point of the eyepiece. In the prior art, a pinhole diaphragm is arranged behind an ocular lens of a system to be measured, an observer observes behind the pinhole, only when the pinhole is positioned at an eyepoint position of the system to be measured, light beams of a system full view field can pass through the pinhole without being blocked, and at the moment, an eye pupil can see the system full view field at the position behind the pinhole. The detection method has the advantages that the detection device is simple and crude, human eyes are easy to fatigue, the detection method is not suitable for detecting batch products, and the detection precision and the detection efficiency are influenced.
Disclosure of Invention
In order to meet the technical requirements, the invention aims to provide an eye point distance measuring device for inspecting an optical sight product, which can effectively improve the measurement precision and the detection efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: an eyepoint distance measuring device for detecting an optical sight product comprises a base, wherein a height assembly and a lifting support for placing a product to be measured are respectively arranged on the base, a guide rail is arranged at the upper part of the height assembly, a moving frame for fixing an observation mirror is arranged on the guide rail, the observation mirror freely moves on the guide rail through being held by hands, a small hole is formed in the position, close to the product to be measured, of the observation mirror, and the optical axes of the small hole, the observation mirror and the product to be measured are in a coaxial state during measurement; the end surface of the guide rail, which is close to the lifting support, is provided with a reference piece, the reference piece is close to the bottom and is fixedly provided with a grating ruler capable of displaying product measurement information, the reference piece is close to the top and is fixedly provided with a steel ruler reflecting the moving distance of the moving frame, the end surface of the reference piece is respectively superposed with reference points of the grating ruler and the steel ruler, and the grating ruler is provided with a grating ruler display screen; the eyepoint distance measuring device also comprises a correction assembly, and the correction assembly is used for enabling the vertex of the eyepiece of the product to be measured, the zero datum point of the grating ruler and the zero datum point of the steel ruler to be superposed together.
Furthermore, the lifting support comprises a sleeve, a lifting rod is arranged in the sleeve, a buffer spring is arranged between the lifting rod and the bottom of the sleeve, a connecting plate is arranged at the top of the lifting rod, a locking hand wheel is further arranged outside the sleeve, and the tail end of the locking hand wheel penetrates through the sleeve and is tightly propped against the lifting rod; the connecting plate is arranged into a plurality of structures, so that different products to be tested can be fixed conveniently.
The bottom of the lifting support is also provided with an adjusting seat which can enable the lifting support to move left and right or back and forth.
An RS232 interface is configured on the display screen of the grating ruler, and real-time recording and storage of data can be realized through a computer operation interface.
The top of the proofreading component is provided with a first protrusion which is in contact with the vertex of an eyepiece of a product to be detected during proofreading, the bottom of the proofreading component is provided with a second protrusion which is in contact with the end face of the reference part during proofreading, the first protrusion and the second protrusion are both made of nylon materials, accurate calibration is facilitated, and the surface of the product to be detected can be prevented from being scratched by the first protruding nylon materials.
The utility model discloses a telescope, including the sight glass, the sight glass includes the sight glass body and locates the support of sight glass body lower part, the aperture forms the aperture through arranging a aperture circle in a sight glass body terminal surface, and another terminal surface of sight glass body is equipped with the clamping ring, through setting up a plurality of eyepiece groups between aperture circle and the clamping ring, make the sight glass form a big visual field telescope, during the measurement, the observer's eye pupil is located the aperture diaphragm position at telescope eyepiece back, and when the aperture was coincided with the product eye point that awaits measuring, the full field of vision of system can be seen, and the aperture was the eye point distance promptly with the distance at the product eye point that awaits measuring summit this moment.
When the invention is used, the optical axis, the small hole and the observation mirror of a product to be measured are in a coaxial state by adjusting the lifting bracket, the movable bracket is moved to the right side of the guide rail, the calibration component is arranged on the guide rail, when the first protrusion of the calibration component contacts the vertex of the ocular of the product to be measured and the second protrusion contacts the reference component, the calibration is completed, at the moment, the calibration component is removed, the movable bracket is moved to be close to the end surface of the reference component, the reference point of the grating ruler is superposed with the end surface of the reference component, so that the reference point of the grating ruler, the reference point of the steel ruler and the vertex of the ocular of the product to be measured are superposed, the movable bracket is moved on the guide rail by holding, the eye pupil of an observer is observed by the observation mirror, when the observer can see the full field of view of the product to be measured, the small hole is superposed with the eye point of the product to be measured, at the moment, the distance between the vertex of the ocular and the small hole is the eye point distance which is the distance displayed by the grating ruler display screen, in order to confirm the distance, when the movable frame moves to the small hole and the eyepoint coincide, the auxiliary reading on the steel ruler is compared with the grating ruler, and the eyepoint distance is effectively confirmed.
The invention has the beneficial effects that: the eye-point distance detection device has the advantages that the structure is simple, the design is reasonable, the eye-point distance is simply, effectively and quickly detected, human eyes are not easy to fatigue, and the eye-point distance detection device has important significance for improving the technical indexes of use of the sighting device product; by adopting the grating ruler detection technology, the detected eye point distance is more accurate, and meanwhile, the steel ruler is adopted for auxiliary detection, so that the correctness of the detection value of the grating ruler can be effectively confirmed.
Drawings
The structure and features of the present invention will be further described with reference to the accompanying drawings and examples.
FIG. 1 is a schematic diagram of the definition of the measured eyepoint distance in the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
FIG. 3 is a schematic diagram of the operation of the calibration group of the present invention.
Fig. 4 is a front view of fig. 3.
Fig. 5 is a sectional view of the elevating bracket according to the present invention.
FIG. 6 is a cross-sectional view of the scope of the present invention.
In the attached drawings 1-6, 1 is a product to be tested, 2 is an observation mirror, 3 is a movable frame, 4 is a steel ruler, 5 is a guide rail, 6 is a height assembly part, 7 is a base, 8 is a grating ruler, 9 is a lifting support, 10 is a calibration component, 11 is a first protrusion, 12 is a second protrusion, 13 is a connecting plate, 14 is a lifting rod, 15 is a locking hand wheel, 16 is a buffer spring, 17 is a sleeve, 18 is a pressing ring, 19 is an ocular group, 20 is a small hole ring, 21 is an observation mirror body, 22 is a support, 23 is a reference part, 24 is an adjusting seat, 25 is a grating ruler fixing hole, 26 is a sliding block, 27 is a locking screw and 28 is a sliding rail.
Detailed Description
Fig. 2-6 show an embodiment of the present invention, which discloses an eye point distance measuring device for inspecting an optical sight product, comprising a base 7, wherein the base 7 is respectively provided with a height assembly 6 and a lifting bracket 9 for placing a product 1 to be measured, the upper part of the height assembly 6 is provided with a guide rail 5, the guide rail 5 is provided with a moving frame 3 for fixing an observation mirror 2, the observation mirror 2 is held by a hand to freely move on the guide rail 5, the observation mirror 2 is provided with a small hole near the product to be measured, and the optical axes of the small hole, the observation mirror 2 and the product 1 to be measured are coaxial during measurement; the end face of the guide rail 5, which is close to the lifting support 9, is provided with a reference part 23, the reference part 23, which is close to the bottom, is fixed with a grating ruler 24 capable of displaying product measurement information, the steel ruler 4 which is close to the top and reflects the moving distance of the moving frame 3 is fixed, the end face of the reference part 23 is respectively superposed with the reference points of the grating ruler 24 and the steel ruler 4, and the grating ruler 24 is provided with a grating ruler display screen 8; the eyepoint distance measuring device also comprises a proofreading component 10, and the proofreading component is used for enabling the vertex of the eyepiece 1 of the product to be measured, the zero datum point of the grating ruler 8 and the zero datum point of the steel ruler 4 to be superposed together.
The lifting support 9 comprises a sleeve 17, a lifting rod 14 is arranged in the sleeve 17, a buffer spring 6 is arranged between the lifting rod 14 and the bottom of the sleeve 17, a connecting plate 13 is arranged at the top of the lifting rod 14, a locking hand wheel 15 is further arranged outside the sleeve 17, and the tail end of the locking hand wheel 15 penetrates through the sleeve 17 and is tightly propped against the lifting rod 14; the connecting plate 13 is arranged in various structures, so that different products to be tested can be fixed conveniently.
An RS232 interface is configured on the grating ruler display screen 8, and real-time data recording and storage can be realized through a computer operation interface.
The top of the proofreading component 10 is provided with a first protrusion 11 which is in contact with the top point of the eyepiece of the product 1 to be detected during proofreading, the bottom of the proofreading component is provided with a second protrusion 12 which is in contact with the end face of the reference part 23 during proofreading, wherein the first protrusion 11 and the second protrusion 12 are both made of nylon materials, so that the calibration under the same condition is facilitated, and the nylon materials of the first protrusion 11 can avoid the scratch on the surface of the product 1 to be detected.
The observation mirror 2 comprises an observation mirror body 21 and a support 22 arranged at the lower part of the observation mirror body 21, a small hole ring 20 is arranged at one end face of the observation mirror body 21 to form a small hole, a pressing ring 18 is arranged at the other end face of the observation mirror body 21, and a plurality of eyepiece groups 19 are arranged between the small hole ring 20 and the pressing ring 18 to enable the observation mirror 2 to form a large-field telescope; when the eye spot of the product to be measured is superposed with the eye spot of the eye lens of the telescope, the full view field of the system can be seen, and the distance between the eye spot and the vertex of the eye lens of the product to be measured is the eye spot distance.
In order to adapt to different sighting instruments, the lifting support can move front, back, left and right, an adjusting seat capable of enabling the lifting support to move left and right or front and back can be further arranged at the bottom of the lifting support, the adjusting seat 24 comprises a sliding block 26 arranged at the bottom of the lifting support, a sliding rail 28 is arranged at the lower part of the sliding block 26, a locking screw 27 is arranged on the outer side of the sliding block 26, when the position needs to be moved left and right, the locking screw 27 is loosened, and when the position meets the requirement, the locking screw 27 is screwed.
When the embodiment of the invention is used, the optical axis, the small hole and the observation mirror of the product to be measured are in a coaxial state by adjusting the lifting support, the movable frame moves to the right side of the guide rail, the calibration assembly is arranged on the guide rail, when the first protrusion of the calibration assembly contacts the top point of the eyepiece of the product to be measured and the second protrusion contacts the reference member, the calibration is completed, at the moment, the calibration assembly is removed, the movable frame is moved to be close to the end surface of the reference member, the reference point of the grating ruler is superposed with the end surface of the reference member, so that the reference point of the grating ruler, the reference point of the steel ruler and the top point of the eyepiece of the product to be measured are superposed, the handheld movable frame moves on the guide rail, the eye pupil of an observer is observed through the observation mirror, when the observer can see the full field of view of the product to be measured, the small hole is superposed with the eye point, at the moment, the distance between the top point and the small hole is the eye point distance which is the distance displayed by the grating ruler display screen, in order to confirm the distance, when the movable frame moves to the small hole and the eyepoint coincide, the auxiliary reading on the steel ruler is compared with the grating ruler, and the eyepoint distance is effectively confirmed.
The above description is only a preferred embodiment of the present invention, and the above specific embodiments are not intended to limit the present invention, and modifications, modifications or equivalents thereof, which may occur to those skilled in the art, are included within the scope of the present invention.
Claims (6)
1. An eye point distance measuring device for inspecting a sighting product, comprising a base, characterized in that: the base is respectively provided with a height assembly and a lifting support for placing a product to be measured, the upper part of the height assembly is provided with a guide rail, the guide rail is provided with a moving frame for fixing an observation mirror, the observation mirror freely moves on the guide rail by being held by hands, a small hole is formed in the position, close to the product to be measured, of the observation mirror, and the optical axes of the small hole, the observation mirror and the product to be measured are in a coaxial state during measurement; the end face of the guide rail close to the end face of the lifting support is provided with a reference part, a grating ruler capable of displaying product measurement information is fixed at the position of the reference part close to the bottom, a steel ruler capable of reflecting the moving distance of the moving frame is fixed at the position of the reference part close to the top, the end face of the reference part is respectively superposed with reference points of the grating ruler and the steel ruler, and a grating ruler display screen is arranged on the grating ruler; the eyepoint distance measuring device also comprises a correction assembly, and the correction assembly is used for enabling the vertex of the eyepiece of the product to be measured, the zero datum point of the grating ruler and the zero datum point of the steel ruler to be superposed together.
2. The eye point distance measuring device for inspecting an ophthalmic product of claim 1, wherein: the lifting support comprises a sleeve, a lifting rod is arranged in the sleeve, a buffer spring is arranged between the lifting rod and the bottom of the sleeve, a connecting plate is arranged at the top of the lifting rod, a locking hand wheel is further arranged outside the sleeve, and the tail end of the locking hand wheel penetrates through the sleeve and is tightly propped against the lifting rod; the connecting plate is arranged into a plurality of structures, so that different products to be tested can be fixed conveniently.
3. The eye point distance measuring device for inspecting an ophthalmic product of claim 1, wherein: the bottom of the lifting support is also provided with an adjusting seat which can enable the lifting support to move left and right or back and forth.
4. The eye point distance measuring device for inspecting an ophthalmic product of claim 1, wherein: an RS232 interface is configured on the display screen of the grating ruler, and real-time recording and storage of data can be realized through a computer operation interface.
5. The eye point distance measuring device for inspecting an ophthalmic product of claim 1, wherein: the top of the proofreading component is provided with a first protrusion which is in contact with the vertex of an eyepiece of a product to be detected during proofreading, the bottom of the proofreading component is provided with a second protrusion which is in contact with the end face of the reference part during proofreading, the first protrusion and the second protrusion are both made of nylon materials, and the first protruding nylon materials can avoid scratches on the surface of the product to be detected.
6. The eye point distance measuring device for inspecting an ophthalmic product of claim 1, wherein: the observation mirror comprises an observation mirror body and a support arranged on the lower portion of the observation mirror body, a small hole is formed in one end face of the observation mirror body through a small hole ring, a pressing ring is arranged on the other end face of the observation mirror body, and a plurality of eyepiece sets are arranged between the small hole ring and the pressing ring, so that the observation mirror forms a large-field-of-view telescope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111647383.8A CN114518216B (en) | 2021-12-31 | 2021-12-31 | Eye point distance measuring device for detecting optometrized aiming product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111647383.8A CN114518216B (en) | 2021-12-31 | 2021-12-31 | Eye point distance measuring device for detecting optometrized aiming product |
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| CN114518216A true CN114518216A (en) | 2022-05-20 |
| CN114518216B CN114518216B (en) | 2023-09-29 |
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| CN202111647383.8A Active CN114518216B (en) | 2021-12-31 | 2021-12-31 | Eye point distance measuring device for detecting optometrized aiming product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164645A (en) * | 2022-07-15 | 2022-10-11 | 长春理工大学 | Panoramic aiming mirror image skipping rotation detection device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164645A (en) * | 2022-07-15 | 2022-10-11 | 长春理工大学 | Panoramic aiming mirror image skipping rotation detection device and method |
| CN115164645B (en) * | 2022-07-15 | 2024-04-12 | 长春理工大学 | Device and method for detecting image jumping rotation of panoramic aiming mirror image |
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| CN114518216B (en) | 2023-09-29 |
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