4. The limitation of the validity period has been removed according to the protocol N 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)

5. EDITION (July 2003) with Amendment No. 1, approved in May 1988 (IUS 9-88)


This standard applies to general and industrial magnifiers.

1. TYPES AND BASIC PARAMETERS

1. TYPES AND BASIC PARAMETERS

1.1. Depending on the value of the main parameters, the groups of loops indicated in Table 1 are set.

Table 1

Note. The magnification of the magnifying glass when the pupil of the eye is in the back focus should be calculated using the formulas:

where 250 is the best vision distance, mm;

- back focal length of the magnifier, mm.

Formula (1) - for loupes with focal lengths up to 150 mm, formula (2) - for loupes with focal lengths over 150 mm.

1.2. Depending on the purpose, the types of loops indicated in Table 2 are installed.

table 2

1.3. AT symbol magnifiers shall include type designation, number of lenses, magnification and designation of this standard.

Examples of conventions:

single lens textile magnifier with glass optics 4 magnifications:

LT-1-4GOST 25706-83;

three-lens corrected measuring magnifier with plastic optics 10 magnification:

LIP-3-10GOST 25706-83

2. GENERAL TECHNICAL REQUIREMENTS

2.1. Magnifiers should be manufactured in accordance with the requirements of this standard and the specifications for a particular magnifier type.

2.2. Lenses of loupes should be made of optical glass according to GOST 3514 or made of optical plastic with a protective coating.

2.3. The cleanliness of the lens surface must meet the requirements GOST 11141 ; the cleanliness class should be selected depending on the lens diameters of magnifiers in accordance with Table 3.

Table 3

(Modified edition, Amendment N 1).

2.4. The image quality must be clear throughout the entire field of view and correspond to the sample approved in the established manner.

2.5. The lenses of magnifiers must be firmly fixed and must not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must be free of nicks, dents and other defects.

2.7. In folding magnifiers, the articulated connection must ensure fixation of the magnifier with the handle at any opening angle.

2.8. The construction of grain magnifiers should provide access to light to the object under consideration.

2.9. The shape, size and markings of magnifiers must correspond technical specifications to a specific type of magnifier.

2.10. For magnifiers with plastic lenses, the lens clamping rings must be made of plastic.

2.11. The metal body of the magnifier must have a durable anti-corrosion coating.

2.12. The rim of the magnifier should be marked with:

manufacturer's trademark;

magnification of the magnifier.

2.13. Lenses of magnifiers made of polymer materials should not have gross casting defects. Underpressing, sagging, yellowness of materials, as well as deposits on the working surfaces of the lens are not allowed.

2.14. Magnifiers must withstand during transportation the effect of ambient temperature from minus 45 ° С to plus 45 ° С.

2.15. Magnifiers must be resistant to mechanical stress during transportation with overload 4g.

2.16. Magnifiers should be made in climatic version UHL category 4.2 according to GOST 15150.

2.17. The established full service life of magnifiers with glass optics is 10 years, with plastic optics - 4 years.

(Modified edition, Amendment N 1).

The text of the document is verified by:
official publication
Moscow: IPK Standards Publishing House, 2003

Imaging technology. GOST 25706-83: Magnifiers. Types, basic parameters. General technical requirements. OKS: Imaging technology, Optical equipment. GOSTs. Magnifiers. Types, basic parameters. General technical ....class \u003d text\u003e

GOST 25706-83

Magnifiers. Types, basic parameters. General technical requirements

GOST 25706-83
Group P43

INTERSTATE STANDARD

Types, basic parameters. General technical requirements

Magnifiers. Types, basic parameters.
General technical requirements

ISS 37.020
OKP 44 3580

Date of introduction 1984-01-01

INFORMATION DATA

1. APPROVED AND PUT INTO EFFECT by the Decree of the USSR State Committee for Standards dated 08.04.83 N 1684

2. REPLACE GOST 7594-75; GOCT 8307-72; GOST 8309-75; GOST 9461-74; GOST 10513-73; GOST 18504-73

3. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

4. The limitation of the validity period has been removed according to the protocol N 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)

5. EDITION (July 2003) with Amendment No. 1, approved in May 1988 (IUS 9-88)

This standard applies to general and industrial magnifiers.

1. TYPES AND BASIC PARAMETERS

1. TYPES AND BASIC PARAMETERS

1.1. Depending on the value of the main parameters, the groups of loops indicated in Table 1 are set.

Table 1

Note. The magnification of the magnifying glass when the pupil of the eye is in the back focus should be calculated using the formulas:

where 250 is the best vision distance, mm;
- back focal length of the magnifier, mm.
Formula (1) - for loupes with focal lengths up to 150 mm, formula (2) - for loupes with focal lengths over 150 mm.

1.2. Depending on the purpose, the types of loops indicated in Table 2 are installed.

table 2

1.3. The symbol for a magnifier shall include the type designation, number of lenses, magnification and designation of this standard.
Examples of conventions:
single lens textile magnifier with glass optics 4 magnifications:

LT-1-4GOST 25706-83;

three-lens corrected measuring magnifier with plastic optics 10 magnification:

LIP-3-10GOST 25706-83

2. GENERAL TECHNICAL REQUIREMENTS

2.1. Magnifiers should be manufactured in accordance with the requirements of this standard and the specifications for a particular magnifier type.

2.2. Loupe lenses should be made of optical glass in accordance with GOST 3514 or of optical plastic with a protective coating.

2.3. The cleanliness of the lens surface must meet the requirements of GOST 11141; the cleanliness class should be selected depending on the lens diameters of loupes in accordance with Table 3.

Table 3

(Modified edition, Amendment N 1).

2.4. The image quality must be clear throughout the entire field of view and correspond to the sample approved in the established manner.

2.5. The lenses of magnifiers must be firmly fixed and must not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must be free of nicks, dents and other defects.

2.7. In folding magnifiers, the articulated connection must ensure fixation of the magnifier with the handle at any opening angle.

2.8. The construction of grain magnifiers should provide access to light to the object under consideration.

2.9. The shape, dimensions and markings of magnifiers must comply with the specifications for a particular magnifier type.

2.10. For magnifiers with plastic lenses, the lens clamping rings must be made of plastic.

2.11. The metal body of the magnifier must have a durable anti-corrosion coating.

2.12. The rim of the magnifier should be marked with:
manufacturer's trademark;
magnification of the magnifier.

2.13. Lenses of magnifiers made of polymer materials should not have gross casting defects. Underpressing, sagging, yellowness of materials, as well as deposits on the working surfaces of the lens are not allowed.

2.14. Magnifiers must withstand during transportation the effect of ambient temperature from minus 45 ° С to plus 45 ° С.

2.15. Magnifiers must be resistant to mechanical stress during transportation with overload 4g.

2.16. Magnifiers should be made in climatic version UHL category 4.2 in accordance with GOST 15150.

2.17. The established full service life of magnifiers with glass optics is 10 years, with plastic optics - 4 years.
(Modified edition, Amendment N 1).

4. The limitation of the validity period has been removed according to the protocol N 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)

5. EDITION (July 2003) with Amendment No. 1, approved in May 1988 (IUS 9-88)


This standard applies to general and industrial magnifiers.

1. TYPES AND BASIC PARAMETERS

1. TYPES AND BASIC PARAMETERS

1.1. Depending on the value of the main parameters, the groups of loops indicated in Table 1 are set.

Table 1

Note. The magnification of the magnifying glass when the pupil of the eye is in the back focus should be calculated using the formulas:

where 250 is the best vision distance, mm;

- back focal length of the magnifier, mm.

Formula (1) - for loupes with focal lengths up to 150 mm, formula (2) - for loupes with focal lengths over 150 mm.

1.2. Depending on the purpose, the types of loops indicated in Table 2 are installed.

table 2

1.3. The symbol for a magnifier shall include the type designation, number of lenses, magnification and designation of this standard.

Examples of conventions:

single lens textile magnifier with glass optics 4 magnifications:

LT-1-4 GOST 25706-83 ;

three-lens corrected measuring magnifier with plastic optics 10 magnification:

LIP-3-10 GOST 25706-83

2. GENERAL TECHNICAL REQUIREMENTS

2.1. Magnifiers should be manufactured in accordance with the requirements of this standard and the specifications for a particular magnifier type.

2.2. Loupe lenses should be made of optical glass in accordance with GOST 3514 or of optical plastic with a protective coating.

2.3. The cleanliness of the lens surface must meet the requirements of GOST 11141; the cleanliness class should be selected depending on the lens diameters of loupes in accordance with Table 3.

Table 3

(Modified edition, Amendment N 1).

2.4. The image quality must be clear throughout the entire field of view and correspond to the sample approved in the established manner.

2.5. The lenses of magnifiers must be firmly fixed and must not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must be free of nicks, dents and other defects.

2.7. In folding magnifiers, the articulated connection must ensure fixation of the magnifier with the handle at any opening angle.

2.8. The construction of grain magnifiers should provide access to light to the object under consideration.

2.9. The shape, dimensions and markings of magnifiers must comply with the specifications for a particular magnifier type.

2.10. For magnifiers with plastic lenses, the lens clamping rings must be made of plastic.

2.11. The metal body of the magnifier must have a durable anti-corrosion coating.

2.12. The rim of the magnifier should be marked with:

manufacturer's trademark;

magnification of the magnifier.

2.13. Lenses of magnifiers made of polymer materials should not have gross casting defects. Underpressing, sagging, yellowness of materials, as well as deposits on the working surfaces of the lens are not allowed.

2.14. Magnifiers must withstand during transportation the effect of ambient temperature from minus 45 ° С to plus 45 ° С.

2.15. Magnifiers must be resistant to mechanical stress during transportation with overload 4g.

2.16. Magnifiers should be made in climatic version UHL category 4.2 in accordance with GOST 15150.

2.17. The established full service life of magnifiers with glass optics is 10 years, with plastic optics - 4 years.

(Modified edition, Amendment N 1).

The text of the document is verified by:
official publication
Moscow: IPK Standards Publishing House, 2003

INTERSTATE STANDARD

Magnifiers

TYPES, BASIC PARAMETERS. GENERAL TECHNICAL REQUIREMENTS

Official edition

IPK STANDARDS PUBLISHING Moscow

INTERSTATE STANDARD

Magnifiers

Types, basic parameters. General technical requirements

Magnifiers. Types, basic parameters.

General technical requirements

ISS 37.020 OKP 44 3580

Date of introduction 01.01.84

This standard applies to general and industrial magnifiers.

1. TYPES AND BASIC PARAMETERS

1.1. Depending on the value of the main parameters, the groups of loops indicated in table are set. 1.

Note. The magnification of the magnifying glass when the pupil of the eye is in the back focus should be calculated using the formulas:

where 250 is the best vision distance, mm;

/ "- rear focal length of the magnifier, mm.

Formula (1) - for loupes with focal lengths up to 150 mm, formula (2) - for loupes with focal lengths over 150 mm.

Official edition Reprinting prohibited

1.2. Depending on the purpose, the types of loops indicated in table are set. 2.

© Publishing house of standards, 1983 © IPK Publishing house of standards, 2003

GOST 25706-83 S. 2

1.3. The symbol for a magnifier shall include the type designation, number of lenses, magnification and designation of this standard.

Examples of conventions:

single-lens textile magnifier with glass optics 4 x magnification:

LT-1-4 x GOST25706-83;

three-lens corrected measuring magnifier with plastic optics 10 x magnification:

LIP-3-10 x GOST25706-83

2. GENERAL TECHNICAL REQUIREMENTS

2.1. Magnifiers should be manufactured in accordance with the requirements of this standard and the specifications for a particular magnifier type.

2.2. Loupe lenses should be made of optical glass in accordance with GOST 3514 or of optical plastic with a protective coating.

2.3. The cleanliness of the lens surface must meet the requirements of GOST 11141; the class of cleanliness should be selected depending on the diameters of the lenses of loupes in accordance with table. 3.

(Modified edition, Amendment No. 1).

2.4. The image quality must be clear throughout the entire field of view and correspond to the sample approved in the established manner.

2.5. The lenses of magnifiers must be firmly fixed and must not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must be free of nicks, dents and other defects.

2.7. In folding magnifiers, the articulated connection must ensure fixation of the magnifier with the handle at any opening angle.

P. 3 GOST 25706-83

2.8. The construction of grain magnifiers should provide access to light to the object under consideration.

2.9. The shape, dimensions and markings of magnifiers must comply with the specifications for a particular magnifier type.

2.10. For magnifiers with plastic lenses, the lens clamping rings must be made of plastic.

2.11. The metal body of the magnifier must have a durable anti-corrosion coating.

2.12. The rim of the magnifier should be marked with:

manufacturer's trademark;

magnification of the magnifier.

2.13. Lenses of magnifiers made of polymer materials should not have gross casting defects. Underpressing, sagging, yellowness of materials, as well as deposits on the working surfaces of the lens are not allowed.

2.14. Magnifiers must withstand during transportation the effect of ambient temperature from minus 45 ° С to plus 45 ° С.

2.15. Magnifiers must be resistant to mechanical stress during transportation with overload 4g.

4. The limitation of the validity period has been removed according to the protocol N 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)

5. EDITION (July 2003) with Amendment No. 1, approved in May 1988 (IUS 9-88)


This standard applies to general and industrial magnifiers.

1. TYPES AND BASIC PARAMETERS

1. TYPES AND BASIC PARAMETERS

1.1. Depending on the value of the main parameters, the groups of loops indicated in Table 1 are set.

Table 1

Note. The magnification of the magnifying glass when the pupil of the eye is in the back focus should be calculated using the formulas:

where 250 is the best vision distance, mm;

- back focal length of the magnifier, mm.

Formula (1) - for loupes with focal lengths up to 150 mm, formula (2) - for loupes with focal lengths over 150 mm.

1.2. Depending on the purpose, the types of loops indicated in Table 2 are installed.

table 2

1.3. The symbol for a magnifier shall include the type designation, number of lenses, magnification and designation of this standard.

Examples of conventions:

single lens textile magnifier with glass optics 4 magnifications:

LT-1-4 GOST 25706-83 ;

three-lens corrected measuring magnifier with plastic optics 10 magnification:

LIP-3-10 GOST 25706-83

2. GENERAL TECHNICAL REQUIREMENTS

2.1. Magnifiers should be manufactured in accordance with the requirements of this standard and the specifications for a particular magnifier type.

2.2. Loupe lenses should be made of optical glass in accordance with GOST 3514 or of optical plastic with a protective coating.

2.3. The cleanliness of the lens surface must meet the requirements of GOST 11141; the cleanliness class should be selected depending on the lens diameters of loupes in accordance with Table 3.

Table 3

(Modified edition, Amendment N 1).

2.4. The image quality must be clear throughout the entire field of view and correspond to the sample approved in the established manner.

2.5. The lenses of magnifiers must be firmly fixed and must not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must be free of nicks, dents and other defects.

2.7. In folding magnifiers, the articulated connection must ensure fixation of the magnifier with the handle at any opening angle.

2.8. The construction of grain magnifiers should provide access to light to the object under consideration.

2.9. The shape, dimensions and markings of magnifiers must comply with the specifications for a particular magnifier type.

2.10. For magnifiers with plastic lenses, the lens clamping rings must be made of plastic.

2.11. The metal body of the magnifier must have a durable anti-corrosion coating.

2.12. The rim of the magnifier should be marked with:

manufacturer's trademark;

magnification of the magnifier.

2.13. Lenses of magnifiers made of polymer materials should not have gross casting defects. Underpressing, sagging, yellowness of materials, as well as deposits on the working surfaces of the lens are not allowed.

2.14. Magnifiers must withstand during transportation the effect of ambient temperature from minus 45 ° С to plus 45 ° С.

2.15. Magnifiers must be resistant to mechanical stress during transportation with overload 4g.

2.16. Magnifiers should be made in climatic version UHL category 4.2 in accordance with GOST 15150.

2.17. The established full service life of magnifiers with glass optics is 10 years, with plastic optics - 4 years.

(Modified edition, Amendment N 1).

The text of the document is verified by:
official publication
Moscow: IPK Standards Publishing House, 2003