CN114518216B - Eye point distance measuring device for detecting optometrized aiming product - Google Patents
Eye point distance measuring device for detecting optometrized aiming product Download PDFInfo
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- CN114518216B CN114518216B CN202111647383.8A CN202111647383A CN114518216B CN 114518216 B CN114518216 B CN 114518216B CN 202111647383 A CN202111647383 A CN 202111647383A CN 114518216 B CN114518216 B CN 114518216B
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- observation mirror
- small hole
- protrusion
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 239000004677 Nylon Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 10
- 238000012937 correction Methods 0.000 description 6
- 210000001747 pupil Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- 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 optometrized product, which comprises a base, wherein a height assembly and a lifting bracket for placing the product to be detected are respectively arranged on the base, a guide rail is arranged at the upper part of the height assembly, a movable 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 arranged at the position, close to the product to be detected, of the observation mirror, and the small hole, the observation mirror and the optical axis of the product to be detected 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, and the fixed steel rule that reflects the movable frame travel distance that is close to the top, the benchmark piece terminal surface coincides with the benchmark of grating chi and steel rule respectively. Compared with the prior art, the invention has the advantages of simple structure, reasonable design, simple and rapid detection of the eye point distance, and difficult fatigue of human eyes, and has important significance for improving technical indexes of aiming products.
Description
Technical Field
The invention relates to the field of production and inspection of aiming products, in particular to an eye point distance measuring device for inspecting an optical aiming product.
Background
The eye point distance detection is an important technical index of the micro-light sighting telescope and infrared thermal image sighting telescope products in the developing, producing and detecting processes, and is defined according to 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 view field is called as an 'eye point' of the product; the distance between the eye point and the top of the eyepiece is called as the eye point distance, and the position (A) of the eye point is the exit pupil position corresponding to the oblique light beam at the edge of the field of view, and is the intersection point of the principal ray emitted by the object point at the edge of the field of view and the optical axis. Obviously, the human eye can only see the object point at the edge of the field of view when placed in this position, as shown in fig. 1. If the eye is not placed at the point a (eye point) but at the point B or the point C, the light beam at the edge of the field of view cannot enter the eye, the eye point reflects the characteristic of the edge of the field of view, the eye point position is the most suitable observation position of the eye, and L is the eye point distance, i.e. the distance between the eye point and the vertex of the eyepiece. In the prior art, a small aperture diaphragm is arranged behind an ocular of a tested system, an observer observes behind the small aperture, and only when the small aperture is positioned at the eye point position of the tested system, the light beam of the full view field of the system can pass through the small aperture without blocking, and at the moment, the eye pupil can see the full view field of the system at the position behind the small aperture. The detection method has the advantages that the detection device is simple, human eyes are extremely easy to fatigue, the detection method is not suitable for detecting batch products, and the detection precision and the detection efficiency are affected.
Disclosure of Invention
In order to meet the technical requirements, the invention aims to provide an eye point distance measuring device for detecting an eye sight product, which can effectively improve the measuring precision and the detecting efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an eyepoint distance measuring device for examining light aiming products, includes a base, be equipped with high sub-assembly and the lifting support that is used for placing the product that awaits measuring on the base respectively, high sub-assembly upper portion is equipped with the guide rail, be equipped with the movable frame of fixed sight glass on the guide rail, the sight glass freely moves on the guide rail through handheld, just the sight glass is close to the product department that awaits measuring and is equipped with the aperture, and this aperture, sight glass and the product optical axis that awaits measuring are coaxial state when measuring; the guide rail is provided with a reference piece close to the end face of the lifting support, a grating ruler capable of displaying product measurement information is fixed close to the bottom of the reference piece, a steel ruler reflecting the moving distance of the moving frame is fixed close to the top of the reference piece, the end face of the reference piece is respectively overlapped 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 checking component which is used for enabling the vertex of the eyepiece of the product to be measured, the zero reference point of the grating ruler and the zero reference point of the steel ruler to be overlapped together.
Further, 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 various structures, so that different products to be tested can be conveniently fixed.
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.
And an RS232 interface is arranged on the display screen of the grating ruler, so that real-time data recording and storage can be realized through a computer operation interface.
The top of the checking component is provided with a first protrusion which contacts with the top of the eyepiece of the product to be checked during checking, the bottom of the checking component is provided with a second protrusion which contacts with the end face of the reference piece during checking, the first protrusion and the second protrusion are made of nylon materials, the checking component is convenient to calibrate accurately, and the nylon materials of the first protrusion can avoid scratches on the surface of the product to be checked.
The observation mirror comprises an observation mirror body and a support seat arranged at the lower part of the observation mirror body, wherein a small hole is formed by arranging a small hole ring on one end face of the observation mirror body, a pressing ring is arranged on the other end face of the observation mirror body, a plurality of eyepiece sets are arranged between the small hole ring and the pressing ring, the observation mirror forms a large-view-field telescope, when in measurement, the eye pupil of an observer is positioned at the position of a small hole diaphragm image behind the eyepiece of the telescope, when the small hole is overlapped with the eyepoint of a product to be measured, the full view field of the system can be seen, and the distance between the small hole and the vertex of the eyepiece of the product to be measured is the eyepoint distance.
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 moving bracket moves to the right side of the guide rail, the correction component is arranged on the guide rail, when the first protrusion of the correction component contacts with the top of the eyepiece of the product to be measured and the second protrusion contacts with the reference piece, the correction component is removed, the moving bracket moves to be close to the end face of the reference piece, the reference point of the grating ruler is overlapped with the end face of the reference piece, so that the reference point of the grating ruler, the reference point of the steel ruler and the top of the eyepiece of the product to be measured are overlapped, the eye pupil of the observer moves on the guide rail through the observation mirror by holding the moving bracket, when the observer can see the full field of view of the product to be measured, the small hole is overlapped with the eye point of the product to be measured, the distance between the top of the eyepiece and the eye point is the distance of the grating ruler, namely the distance displayed by the display screen of the grating ruler, and the distance is confirmed.
The beneficial effects of the invention are as follows: the device has the advantages of simple structure, reasonable design, simplicity, effectiveness, rapidness, no fatigue of eyes, and great significance for improving technical indexes of aiming products in use; through adopting grating chi detection technique, make the eyespot distance that detects more accurate, adopt steel rule supplementary detection simultaneously, can effectively confirm the correctness of grating chi detected value.
Drawings
The structure and features of the present invention are further described below with reference to the drawings and examples.
FIG. 1 is a schematic illustration of the definition of measured eye point distance in the present invention.
Fig. 2 is a schematic structural view of the present invention.
FIG. 3 is a schematic diagram of the operation of the collation set described in the present invention.
Fig. 4 is a front view of fig. 3.
Fig. 5 is a cross-sectional view of the lifting bracket according to the present invention.
Fig. 6 is a cross-sectional view of a view mirror according to the present invention.
1-6, 1 a product to be tested, 2 a sight glass, 3 a movable frame, 4 a steel ruler, 5 a guide rail, 6 a height assembly, 7 a base, 8 a grating ruler, 9 a lifting support, 10 a proofing assembly, 11 a first protrusion, 12 a second protrusion, 13 a connecting plate, 14 a lifting rod, 15 a locking hand wheel, 16 a buffer spring, 17 a sleeve, 18 a clamping ring, 19 a eyepiece group, 20 a small hole ring, 21 a sight glass body, 22 a support, 23 a datum piece, 24 a regulating seat, 25 a grating ruler fixing hole, 26 a sliding block, 27 a locking screw and 28 a sliding rail.
Detailed Description
Fig. 2-6 are diagrams showing an embodiment of the present invention, and disclose an eye point distance measuring device for inspecting an optical sight product, which comprises a base 7, wherein a height assembly 6 and a lifting support 9 for placing the product 1 to be inspected are respectively arranged on the base 7, a guide rail 5 is arranged on the upper part of the height assembly 6, a moving frame 3 for fixing a sight glass 2 is arranged on the guide rail 5, the sight glass 2 is freely moved on the guide rail 5 by being held by hand, and a small hole is arranged on the sight glass 2 near the product to be inspected, and the small hole, the sight glass 2 and the optical axis of the product 1 to be inspected are in a coaxial state during the measurement; the end face of the guide rail 5, which is close to the lifting bracket 9, is provided with a reference piece 23, a grating ruler 24 capable of displaying product measurement information is fixed at the position, which is close to the bottom, of the reference piece 23, a steel ruler 4 reflecting the moving distance of the moving frame 3 is fixed at the position, which is close to the top, the end face of the reference piece 23 is respectively overlapped with reference points of the grating ruler 24 and the steel ruler 4, and a grating ruler display screen 8 is arranged on the grating ruler 24; the eyepoint distance measuring device further comprises a calibrating component 10, wherein the calibrating component is used for enabling the vertex of the eyepiece of the product 1 to be measured, the zero reference point of the grating ruler 8 and the zero reference point of the steel ruler 4 to be overlapped together.
The lifting bracket 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 to tightly prop up the lifting rod 14; the connecting plate 13 is arranged in various structures, so that different products to be tested can be conveniently fixed.
And an RS232 interface is arranged on the grating ruler display screen 8, so that real-time data recording and storage can be realized through a computer operation interface.
The top of the checking component 10 is provided with a first protrusion 11 which contacts with the top of the eyepiece of the product 1 to be checked in checking, the bottom is provided with a second protrusion 12 which contacts with the end face of the reference piece 23 in checking, wherein the first protrusion 11 and the second protrusion 12 are made of nylon materials, the checking component is convenient for checking under the same condition, and the nylon material of the first protrusion 11 can avoid the scratch on the surface of the product 1 to be checked.
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, wherein a small hole ring 20 is arranged on one end surface of the observation mirror body 21 to form a small hole, a pressing ring 18 is arranged on the other end surface 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-view-field telescope; when in measurement, the eye pupil of the observer is positioned at the position of the aperture diaphragm image behind the ocular of the telescope, when the aperture is overlapped with the eye point of the product to be measured, the full view field of the system can be seen, and the distance between the aperture and the vertex of the ocular of the product to be measured is the eye point distance.
In order to adapt to different aiming devices, the lifting support can move forwards and backwards and leftwards and rightwards, an adjusting seat capable of enabling the lifting support to move forwards and backwards 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 portion of the sliding block 26, a locking screw 27 is arranged at the outer side of the sliding block 26, when the lifting support needs to move leftwards and rightwards, the locking screw 27 is loosened, and when the lifting support meets the requirements, the locking screw 27 is screwed down.
When the embodiment of the invention is used, the lifting support is adjusted to enable the optical axis, the small hole and the observation mirror of a product to be detected to be in a coaxial state, the movable frame is moved to the right side of the guide rail, the correction component is arranged on the guide rail, when the first protrusion of the correction component contacts with the top of the eyepiece of the product to be detected, the second protrusion contacts with the reference piece, the correction component is removed at the moment, the movable frame is moved to be close to the end face of the reference piece, the reference point of the grating ruler is overlapped with the end face of the reference piece, so that the reference point of the grating ruler, the reference point of the steel ruler and the top of the eyepiece of the product to be detected are overlapped, the eye pupil of the observer is moved on the guide rail through the observation mirror by hand-held movable frame, when the observer can see the full view field of the product to be detected, the small hole is overlapped with the eye point of the product to be detected, the distance between the eyepiece top of the eye point is the eye point distance, namely the distance displayed by the grating ruler, and the distance displayed by the grating ruler is confirmed, and when the movable frame is moved to be overlapped with the small hole.
The above description is only of the preferred embodiments of the present invention, and the above embodiments are not intended to limit the present invention, and those skilled in the art may make modifications, adaptations or equivalent substitutions according to the above description, which fall within the scope of the present invention.
Claims (5)
1. An eyepoint distance measuring device for examining an optometrized product, comprising a base, characterized in that: the base is respectively provided with a height assembly and a lifting bracket 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 movable frame for fixing a viewing mirror, the viewing mirror is freely moved on the guide rail by being held by a hand, the viewing mirror is provided with a small hole near the product to be measured, and the small hole, the viewing mirror and the optical axis of the product to be measured are in a coaxial state during measurement; the guide rail is provided with a reference piece close to the end face of the lifting support, a grating ruler capable of displaying product measurement information is fixed close to the bottom of the reference piece, a steel ruler reflecting the moving distance of the moving frame is fixed close to the top of the reference piece, the end face of the reference piece is respectively overlapped with reference points of the grating ruler and the steel ruler, and a grating ruler display screen is arranged on the grating ruler; the eye point distance measuring device further comprises a checking component, a first protrusion which is contacted with the top of the eyepiece of the product to be checked during checking is arranged at the top of the checking component, a second protrusion which is contacted with the end face of the reference piece during checking is arranged at the bottom of the checking component, wherein the first protrusion and the second protrusion are made of nylon materials, the nylon materials of the first protrusion can prevent the surface of the product to be checked from generating scratches, and the checking component is used for enabling the top of the eyepiece of the product to be checked, the zero reference point of the grating ruler and the zero reference point of the steel ruler to be overlapped together.
2. An eyepoint distance measurement device for use in inspecting an opti-sight product as claimed in claim 1, characterized in that: 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 various structures, so that different products to be tested can be conveniently fixed.
3. An eyepoint distance measurement device for use in inspecting an opti-sight product as claimed in claim 1, characterized in that: 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. An eyepoint distance measurement device for use in inspecting an opti-sight product as claimed in claim 1, characterized in that: and an RS232 interface is arranged on the display screen of the grating ruler, so that real-time data recording and storage can be realized through a computer operation interface.
5. An eyepoint distance measurement device for use in inspecting an opti-sight product as claimed in claim 1, characterized in that: the observation mirror comprises an observation mirror body and a support seat arranged at the lower part of the observation mirror body, wherein a small hole is formed by arranging a small hole ring on one end face of the observation mirror body, 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 telescope with a large visual field.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114518216A CN114518216A (en) | 2022-05-20 |
| CN114518216B true CN114518216B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115164645B (en) * | 2022-07-15 | 2024-04-12 | 长春理工大学 | A device and method for detecting image jump and rotation of a panoramic aiming mirror |
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| CN105067229A (en) * | 2015-09-06 | 2015-11-18 | 中国工程物理研究院激光聚变研究中心 | Grating ruler three-probe focal length measurement device and measurement method based on combined lens method |
| CN205067059U (en) * | 2015-10-09 | 2016-03-02 | 茂莱（南京）仪器有限公司 | Optical bench of focus is surveyed to magnifying power method |
| CN109799078A (en) * | 2019-03-08 | 2019-05-24 | 中国科学院长春光学精密机械与物理研究所 | Utilize the parallel light tube focal length measuring equipment and method of Moire fringe amplification |
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| US6631990B2 (en) * | 2001-01-03 | 2003-10-14 | Acmed, Inc. | System for measuring distances in the anterior chamber of the eye |
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2021
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| CN205067059U (en) * | 2015-10-09 | 2016-03-02 | 茂莱（南京）仪器有限公司 | Optical bench of focus is surveyed to magnifying power method |
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| CN114518216A (en) | 2022-05-20 |
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