JY/T 0562-2015 English PDF

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JY/T 0562-2015: (Eyeball instrument)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JY/T 0562-2015	179	Add to Cart	3 days	(Eyeball instrument)	Valid

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Basic data

Standard ID: JY/T 0562-2015 (JY/T0562-2015)
Description (Translated English): (Eyeball instrument)
Sector / Industry: Education Industry Standard (Recommended)
Word Count Estimation: 7,756
Date of Issue: 2016-10-24
Date of Implementation: 2017-01-01
Regulation (derived from): Education - (2016) No.5
Issuing agency(ies): Ministry of Education of the People's Republic of China

JY/T 0562-2015: (Eyeball instrument)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Eyeball instrument) ICS 03.180 Y 51 Record number xxxxx-xxxx Education Industry Standard of the People's Republic of China Eyeball Eyeball instrument Published on October 10,.2016 2017–01–01 Implementation Published by the Ministry of Education of the People's Republic of China JY

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some elements of this standard may involve patents. The issuer of this standard is not responsible for identifying these patents. This standard was proposed by the National Education Equipment Standardization Technical Committee (SAC/TC 125). This standard is under the jurisdiction of the National Technical Committee for Educational Equipment Standardization (SAC/TC 125). The main drafting organization of this standard. Wenzhou Wuxing Industrial Co., Ltd. The main drafters of this standard. Chen Xichun and Huang Ruiqing. Eyeball

1 Scope

This standard specifies the nomenclature, requirements, test methods, inspection rules and signs, packaging, transportation and storage of eyeball instruments. This standard applies to eyeballs that demonstrate eyeball imaging in biology teaching and the causes and correction of near and farsightedness.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 2410-2008 Determination of light transmittance and haze of transparent plastics GB 7000.204-2008 Luminaires Part 2-4. Special requirements for portable universal luminaires GB 7793-2010 Standards for lighting and lighting in classrooms of primary and secondary schools GB/T 12671-2008 Polystyrene (PS) resin JY/T 0001-2003 General quality requirements for teaching instruments and equipment products JY/T 0002 Inspection rules for teaching instruments and equipment products JY/T 0009-1990 Environmental requirements and test methods for electronic equipment for teaching JY/T 0026-1991 teaching instrument and teaching equipment product model naming method JY/T 0213-1994 Teaching mechanics, thermal instrument transportation, storage environmental conditions and test methods

3 Naming

3.1 Naming rules The model name of the product is according to JY/T 0026-1991. 3.2 Nomenclature Eyeballs are named. SM ― YQY ― BJ ― 145 The main part of the product, the front and rear diameter of the eyeball 145 ㎜ Product feature code, zoom Product name Pinyin prefix, "eyeball instrument" Product model classification code, biological model Model example. SM-YQY-BJ-145 represents biological model, eyeball device, zoom, 145mm front and rear diameter of the eyeball.

4 Requirements

4.1 Conditions of use 4.1.1 Working voltage. When using AC power, it should be 220 V ± 22 V, 50 Hz, or use DC power. 4.1.2 Environmental Illumination. According to GB 7793-2010, Class 5.2 of the standard for classroom lighting and lighting hygiene. 4.2 Structure 4.2.1 The eyeball instrument consists of an enlarged adult eyeball model, a lens curvature adjuster, a light source, a corrective mirror disk, and a retinal imaging display screen (below). . Imaging display) and handheld display. The eyeball model, light source, and corrective lens plate are respectively mounted on the base through respective brackets Specific location. 4.2.2 The diameter of the front and back of the eyeball is 145 mm ± 5 mm, and it can be disassembled by making a 75 ° ± 5 ° cut through the sagittal plane of the front and back of the eye. In the eye A frontal section perpendicular to the eye axis is made at 1/5 behind the ball, which can be detached and installed. It has an imaging display screen instead of the fundus retina to display the object image. The posterior pole of the eye should show the cross-sectional structure of the optic nerve. 4.2.2.1 Eyeball wall 4.2.2.1.1 The eyeball wall shall show the main structures such as cornea, sclera, iris, ciliary body, optic disc and macular. 4.2.2.1.2 The cornea, which accounts for the first one-sixth of the adventitia, is colorless and transparent, and is fixed on the sclera of one hemisphere. The light transmittance should be ≥85% (refer to GB/T 12671-2008 Table 1). 4.2.2.1.3 The sclera, which accounts for the posterior 5/6 of the adventitia, should have six stumps of the external eyeballs above, below, and inside and outside the surface, Central retinal arteriovenous veins, vortex veins and other eye blood vessels. 4.2.2.1.4 The iris is located at the front of the median, behind the cornea, disc-shaped, with a round pupil in the center. Eyelashes fixed to one hemisphere Shape. 4.2.2.1.5 The ciliary body shall show its position and its adjacent relationship. 4.2.2.1.6 Optic disc and macula, the optic disc is located at the bottom of the endometrial eye, and the macula is slightly below the temporal side of the optic disc. 4.2.2.2 Lens The lens is lenticular, and the curvature can be adjusted by the curvature adjuster. The transmittance should be ≥60%. 4.2.3 The morphological structure, position and proportion of the muscles, membrane walls, blood vessels and nerves of each part shall be correct and natural. 4.2.4 The cornea, iris and lens should be inlaid firmly. 4.2.5 The imaging display should be easy to open or remove, and the handheld display should be easy to reach into the eye for operation and observation. 4.2.6 The rotation of the corrective lens frame should be flexible and the card should be accurate. 4.3 Optical performance 4.3.1 Lens curvature adjuster The lens curvature adjuster should be able to adjust the curvature of the lens. 4.3.2 Light source The brightness of the light emitting surface should be uniform, and the object image should be clear on the display screen. 4.3.3 Corrective Mirror Plate The mirror disk should be inlaid with a concave lens and a convex lens, and fixed to the bracket through the central axis of the disk, which can be rotated and interchanged. Lens diameter 45 mm ± 2 mm, The light transmittance should be ≥85%. The curvature of the concave lens is -350 ° ± 50 °, and the curvature of the convex lens is + 650 ° ± 50 °. 4.3.4 Imaging Display Round, the outer diameter of the frame is 65 mm ± 3 mm. It is made of frosted glass or plexiglass inlaid filter paper and installed behind the eyeball. The frontal section of the part can be opened or removed. 4.3.5 Handheld display Round, the outer diameter of the frame is 55 mm ± 3 mm. It is made of frosted glass or plexiglass inlaid filter paper. Handle, can be held into the eyeball by hand. 4.4 Function 4.4.1 Retina Imaging Demo Take off the 1/5 frontal section structure of the eyeball, reveal the imaging display screen, align the lens-free notch of the corrective disc with the eyeball, and turn on the power. Adjusting the curvature of the lens of the emmetropic eye should make it possible to see a clear inverted object image on the imaging display, which indicates that the object image is just focused on the retina. This is normal vision (ie, the emmetropic eye). 4.4.2 Demonstration of causes, verification and correction of myopia 4.4.2.1 Based on the retinal imaging of the emmetropic eye, the curvature of the lens is changed by the lens curvature regulator to increase the curvature of the lens Large, the image of the inverted object on the imaging display appears blurred, which is myopia. 4.4.2.2 Verification of myopia, open or remove the imaging display, and use the handheld display to reach into the eyeball, at this time on the handheld display You can see clear objects. This proves that the focal length of the visual axis of myopic eyes is shorter than that of emmetropic eyes, and the object image is focused in front of the retina. 4.4.2.3 Correction of myopia, exit the handheld display, cover the imaging display, and convert the corrective lens plate into a corrective lens (double concave) Mirror), the object image on the imaging display can be clearly displayed again. 4.4.3 Demonstration of Causes, Verification and Correction of Hyperopia 4.4.3.1 First adjust the ophthalmoscope to the state of the retinal imaging of the emmetropic eye, and reduce the lens curvature through the lens curvature adjuster. When the image of the inverted object on the imaging display screen is blurred, it is hyperopia. 4.4.3.2 Hyperopia verification, open or remove the imaging display, the handheld display can only be seen behind the retina Clear inverted image. This proves that the focal length of the long-sighted eye is longer than that of the emmetropic eye, and the object image is focused behind the retina. 4.4.3.3 Correction of hyperopia. cover the imaging display, convert the corrective lens plate into a hyperopia correction lens (double convex lens), and place it on the imaging display The object image is clearly visible again. 4.5 Materials and appearance 4.5.1 The model shall be made of rigid thermoplastics. 4.5.2 The product shall also comply with 5.2, 6.9, 6.12, 6.27, 7.4.3, 7.7 and 9.1 to 9.6 of JY/T 0001-2003. 4.6 Electrical equipment and performance 4.6.1 Products using AC power 4.6.1.1 The insulation resistance between the base and the power supply shall be greater than 20 MΩ. 4.6.1.2 The machine is in a non-working state, and the 3000 V test voltage is fed between the power line and the base. There should be no breakdown or flashover for 1 minute phenomenon. 4.6.1.3 The safety performance shall comply with the provisions of 6.1, 6.2, 6.3, 6.4 and Chapter 10 of GB 7000.204-2008. 4.6.2 Products using DC power Power supply should use dry batteries. 4.7 Environmental test The product shall be tested according to 3.1 of JY/T 0213-1994 for temperature, humidity test and free drop test.

5 Test method

5.1 All relevant dimensions are measured with a steel ruler with a division value of 1 mm. 5.2 The structure, function and appearance shall be checked by the senses. 5.3 Light transmittance test A colorless transparent polystyrene plastic standard sample with a light transmittance greater than 85% can be used for sensory comparison. Test in accordance with the provisions of GB/T 2410-2008 in legal theory. 5.4 Insulation resistance test shall be in accordance with 4.4.3 of JY/T 0009-1990. 5.5 The voltage test shall be in accordance with 4.4.4.1 of JY/T 0009-1990. 5.6 The safety performance test shall be visually inspected in accordance with 6.1 and 6.2 of GB 7000.204-2008. 5.7 The environmental test shall be in accordance with 4.1, 4.2 and 4.6 of JY/T 0213-1994.

6 Inspection rules

6.1 Inspection classification The inspection of this product is divided into factory inspection, type inspection and quality supervision spot inspection. 6.2 Inspection items The inspection items and methods of factory inspection and type inspection are shown in Table 1. Table 1 Inspection items and methods for factory inspection and type inspection 6.3 Sampling method 6.3.1 During the factory inspection, all the inspection items shall be inspected first, and the sampling inspection items shall be inspected among the qualified products. 6.3.2 The samples for type inspection shall be taken from the products that passed the factory inspection. 6.3.3 The sampling methods for factory inspection and type inspection shall be in accordance with JY/T 0002. 6.4 Non-conformance determination Item No. Inspection Item Standard Provisions Factory Inspection Type Inspection 1 Structure 4.2.1, 4.2.2, 4.5.2, 4.5.3, 4.5.4 ○ ● 2 Optical performance 4.3.1 ～ 4.3.5 ● ● 3 Functions 4.4.1, 4.4.2, 4.4.3 ● ● 4 Materials 4.5.1-● 5 Appearance 4.5.2 ○ ● 6 Insulation resistance 4.6.1.1 ● ● 7 Electric strength 4.6.1.2 ○ ● 8 Environmental test 4.7-● Note. “●” in the table is all inspection items, “○” is optional inspection item or sampling inspection item, and “-” is not inspection item. 6.4.1 The failure criterion of a single sample is in accordance with JY/T 0002. 6.4.2 When inspecting all the inspection items, it shall be determined according to the unqualified criterion of a single sample. 6.4.3 The main performance indicators of this standard are 4.2.2.1.1, 4.2.2.2, 4.3.1 to 4.3.3, 4.4.1, 4.4.2, and 4.4.3. 6.5 Review rules 6.5.1 Unqualified products can be submitted for inspection again after rework. 6.5.2 If the cause of the batch failure is a sampling inspection item, the item shall be changed to a full inspection during the re-inspection. 6.6 Quality Supervision Spot Inspection Quality supervision and random inspection shall be in accordance with JY/T 0002. 7 Marking, packaging, transportation, storage Press JY/T 0001-2003 Chapters 11 and 12. ......

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