CN201237498Y

CN201237498Y - Detecting instrument for spectacles assembly stress

Info

Publication number: CN201237498Y
Application number: CNU2008200385305U
Authority: CN
Inventors: 褚仁远; 张宝华; 王惕; 卢先领; 王本平; 钟立
Original assignee: KANGMING MEDICAL EQUIPMENT CO Ltd WUXI CITY
Current assignee: KANGMING MEDICAL EQUIPMENT CO Ltd WUXI CITY
Priority date: 2008-08-08
Filing date: 2008-08-08
Publication date: 2009-05-13
Anticipated expiration: 2018-08-08

Abstract

The utility model relates to as eyeglass assembly stress detector which belongs to the technical field of an ophthalmology detecting instruments, in particular to a detecting instrument of optics and optometry, i.e. an eyeglass assembly stress detector. The detector comprises an optical system, a webcam, a support and an analyzer; the optical system is clamped between the U-shaped support; the webcam is arranged on the upper end of the support; the analyzer is connected with the webcam. The detector can judge the impact on the visual quality produced by the deformation of eyeglasses, has good detecting effect and simple structure.

Description

A kind of glasses erection stress detector

Technical field

The utility model relates to the technical field of ophthalmology detecting instrument, the detecting instrument that especially a kind of optics and optometry combine, i.e. glasses erection stress detector.

Background technology

Glasses are windows of soul, and in the era of knowledge-driven economy of contemporary science and technology develop rapidly, 85% of external information imports brain into by glasses, because the influence of eye vision, many people can't just use, bring very big inconvenience to work and life.Wherein ubiquitous myopia, astigmatism are particularly outstanding.China is a myopia big country, and Most patients is still corrected defects of vision by wearing glasses.Along with medical science optometry and science are joined popularizing of mirror, ophthalmic industry has been found to join in the mirror because the gaps such as height, width and shape of face of the human body bridge of the nose in routine, center of lens was very big to the actual range difference of CC after the method for depending conventional inserted sheet optometry alone was joined mirror, there was gap in the standard value of this and optometry system, and the applicant once applied for " eyeglass stadimeter " utility model patent (patent No.: ZL2003201095487) on November 5th, 2003.But find glasses again in implementation process in assembling process, eyeglass may produce distortion owing to be subjected to the extruding force of picture frame.Though these deflections are little, but long periods of wear also can cause bad influence to eyes, therefore national departments concerned has been made strict regulation to the quality of glasses, and the index request that is out of shape has been proposed the standard that quantizes, and the glasses that do not reach requirement must not list marketing.Well-known detection method of at present eyeglass being out of shape is used optical detection, ultrasonic Detection Method, X ray detection method etc. usually, wherein is best suited for the measurement of glasses with optical method, and its principle is by eyeglass planted agent force measurement is measured its deflection.Specifically be by mutually orthogonal polarizing element in one group of polarization direction and the analyzing element that shakes is set, place polarizing element and analyzing to shake between the element glasses, opposite side at the polarizing element is provided with light source, when utilizing the glasses optical material to have internal stress, become anisotropic optical texture, when linearly polarized light passes through thereon, produce birefringence, by observing the stress image of glasses, directly judge the size of stress, but this only rests on qualitatively on the state, and the data result that can not obtain quantizing can't satisfy the requirement that present stage detects lens quality.

Summary of the invention

The utility model purpose provides a kind of can the influence to visual quality that cause because of the lens distortion being judged, and detects effective, simple in structure glasses erection stress detector.

The utility model adopts following technical scheme for achieving the above object:

The utility model comprises optical system, camera, support, analyser, and optical system is clamped between the U type support, and camera is arranged on the upper end of support, and analyser is connected with camera.

Reasonablely be: optical system of the present utility model comprises light source, polarizing element and the analyzing element that shakes, and light source, polarizing element, the analyzing element that shakes sets gradually from bottom to top, and is on the same optical axis.

Reasonablely be: polarizing element of the present utility model and the analyzing element that shakes is in the quadrature setting; It is that the center branch is carved with φ 3mm, φ 6mm, three zones of φ 9mm that analyzing is shaken on the element to look light center, and the analyzing element that shakes is divided at least 4 with central point and resembles the district.

Reasonablely be: optical system of the present utility model and camera are on the same optical axis.

Reasonablely be: camera of the present utility model is connected with support by horizontally rotating with the mechanism of lift adjustment.

Earlier find the optical centre of tested glasses during detection and mark by instruments such as lensometers, again glasses be put into the polarizing element, analyzing is shaken between the element, by optical system the distortion of lens is reflected into specific optical phenomena, electro-photographic head and analyser convert light signal electric signal to and convert digital signal to by AD, set up stress image and be analyzed by special software, thereby can directly judge stress visual quality influence size.

The utility model adopts technique scheme, compared with prior art has following advantage:

1, the utility model finds the optical centre of tested glasses by instruments such as lensometers earlier and marks when detecting, again glasses be put into the polarizing element, analyzing is shaken between the element, by optical system the distortion of lens is reflected into specific optical phenomena, electro-photographic head and analyser convert light signal electric signal to and convert digital signal to by AD, set up stress image and be analyzed by special software, thereby can directly judge stress visual quality influence size.Can reflect the stress intensity of glasses in assembling process intuitively like this, detect effective, and simple in structure.

2, the utility model is converted to electric signal earlier with light signal, is converted to digital signal again, is convenient on the one hand observe and detect, and has improved the accuracy that detects simultaneously.

3, shake element and camera of the utility model light source, polarizing element, analyzing is on the same optical axis, and be convenient to focus on when detecting the glasses erection stress this moment, improved the accuracy of measuring.

4, camera of the present utility model can horizontally rotate and carry out lift adjustment on support, can adapt to the use of multiple environment.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that lens of the present utility model is looked light district distribution synoptic diagram.

Embodiment

Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:

As shown in Figure 1, the utility model comprises optical system 1, camera 2, support 3, analyser 4, and optical system 1 is clamped between the U type support 3, and camera 2 is arranged on the upper end of support 3, and analyser 4 is connected with camera 2.

Reasonablely be: optical system 1 of the present utility model comprises light source 5, polarizing element 6 and the analyzing element 7 that shakes, and light source 5, polarizing element 6, the analyzing element 7 that shakes sets gradually from bottom to top, and is on the same optical axis.

Reasonablely be: polarizing element 6 of the present utility model and the analyzing element 7 that shakes is in the quadrature setting; It is that the center branch is carved with φ 3mm, φ 6m, three zones of φ 9mm that analyzing is shaken on the element 7 to look light center, and the analyzing element 7 that shakes is divided at least 4 with central point and resembles the district.

Reasonablely be: optical system 1 of the present utility model is on the same optical axis with camera 2.

Reasonablely be: camera 2 of the present utility model is connected with support 3 by horizontally rotating with the mechanism of lift adjustment.

The glasses erection stress detector that the utility model provides comprises optical system 1, camera 2, support 3 and analyser 4.Optical system 1 is made up of light source 5, polarizing element 6 and the analyzing element 7 that shakes, and light source 5 is installed in the closed base of support 3, and polarizing element 6 is fixed directly over it, and is more even in order to make light source, and a frosted glass is set below polarizing element 6.Shake element 7 and camera 2 of analyzing is fixed on the horizontal mounting arm of support 3 and up-down adjustment vertically together, and the center of its center and light source 5, polarizing element 6 is on same vertical optical axis.Analyzing shake element (7) be fixed on camera 2 under, it is looked the light center branch and is carved with corresponding glasses φ 3mm, three zones of φ 6mm, φ 9mm and is divided into 4 with central point and resemble the district.Polarizing element 6 and analyzing element 7 setting that is orthogonal of shaking, electro-photographic head 2 is selected the digital camera of CCD for use.

The lens distortion produces stress and is converted into image information by optical system, be converted into electric signal by the CCD in the camera 2 again, send analyser 4 to, analyser 4 passes through special software, and call data in the standard database of rear, to eyeglass φ 3mm, φ 6mm, φ 9mm and φ 9mm with exterior domain and be divided into 4 stress image classifications that resemble district's scope with central point and be analyzed, the stress that the eyeglass distortion is produced is made the influence of visual quality and is quantized to judge, thereby whether draw tested glasses qualified.

Claims

1, a kind of glasses erection stress detector, it is characterized in that: comprise optical system (1), camera (2), support (3), analyser (4), optical system (1) is clamped between the U type support (3), camera (2) is arranged on the upper end of support (3), and analyser (4) is connected with camera (2).

2, glasses erection stress detector according to claim 1, it is characterized in that: above-mentioned optical system (1) comprises light source (5), polarizing element (6) and the analyzing element (7) that shakes, light source (5), polarizing element (6), the analyzing element (7) that shakes sets gradually from bottom to top, and is on the same optical axis.

3, glasses erection stress detector according to claim 2 is characterized in that: described polarizing element (6) and the analyzing element (7) that shakes is in the quadrature setting; It is that the center branch is carved with φ 3mm, φ 6mm, three zones of φ 9mm that analyzing shakes that element (7) goes up to look light center, and the analyzing element (7) that shakes is divided at least 4 with central point and resembles the district.

4, glasses erection stress detector according to claim 1 is characterized in that: above-mentioned optical system (1) is on the same optical axis with camera (2).

5, glasses erection stress detector according to claim 1 is characterized in that: above-mentioned camera (2) is connected with support (3) by horizontally rotating with the mechanism of lift adjustment.