GOST 25706 83 types of magnifiers main parameters. Loupes. Types, basic parameters. General technical requirements. Loupy types, basic parameters. general technical requirements

INTERSTATE STANDARD

LOUPS

TYPES, BASIC PARAMETERS. GENERAL TECHNICAL REQUIREMENTS

Official edition

IPK PUBLISHING STANDARDS Moscow

INTERSTATE STANDARD

LOUPS

Types, basic parameters. General technical requirements

Magnifiers. Types, basic parameters.

General technical requirements

MKS 37.020 OKP 44 3580

Date of introduction 01.01.84

This International Standard applies to general and industrial loupes.

1. TYPES AND MAIN PARAMETERS

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

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

where 250 is the distance of the best vision, mm;

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

Formula (1) - for loops with focal length up to 150 mm, formula (2) - for magnifiers with a focal length of more than 150 mm.

Official publication Reprint prohibited

1.2. Depending on the purpose, the types of magnifiers indicated in Table. 2.

GOST 25706-83 S. 2

Continuation of the table. 2

	Purpose	constructive performance	magnifier group	Optical system
LI (measuring)	For linear and angular measurements	Frame with diopter adjustment and measuring scale	Medium magnification	Multilens corrected
LZ (grain)	To view the grain in order to determine its quality		low magnification
Champions League (hourly)	For use in the watch and jewelry industry			Simple single lens
LT (textile)	To determine the quality and density of the fabric (the number of threads per 1 cm 2)	In folding frame	Small and medium magnification	Simple single-lens, multi-lens corrected
LK (for viewing the frame)	To view frames on film	In a frame with a diopter shift and a frame window		Simple single lens

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

Symbol examples:

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. Loupes should be manufactured in accordance with the requirements of this standard and the specification for a particular type of magnifier.

2.2. Loupe lenses must be made of optical glass according to GOST 3514 or optical plastic with a protective coating.

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

(Revised edition, Rev. No. 1).

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

2.5. Loupe lenses must be firmly fixed and must not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must not have nicks, dents or other defects.

2.7. In folding magnifiers, the swivel must ensure that the magnifier is fixed with a handle at any opening angle.

C. 3 GOST 25706-83

2.8. The design of grain magnifiers should provide light access to the object in question.

2.9. The shape, size and marking of the magnifiers must comply with specifications on a specific type of loupe.

2.10. For loupes with plastic optics, the lens clamping rings must be made of plastic.

2.11. The magnifying glass body, made of metal, must have a durable anti-corrosion coating.

2.12. On the frame of the magnifying glass should be applied:

trademark of the manufacturer;

zoom magnification.

2.13. Magnifier lenses made of polymeric materials should not have gross casting defects. Underpressure, 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 °C to plus 45 °C.

2.15. Loupes must be resistant to mechanical stress during transportation with an overload of 4g.

Imaging technology. GOST 25706-83: Loupes. Types, basic parameters. General technical requirements. OKS: Imaging Technology, Optical equipment. GOSTs. Loupes. Types, basic parameters. General technical.... class=text>

GOST 25706-83

Loupes. 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

MKS 37.020
OKP 44 3580

Introduction date 1984-01-01

INFORMATION DATA

1. APPROVED AND INTRODUCED BY Decree State Committee USSR according to the standards of 04/08/83 N 1684

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

3. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

4. The validity period was removed according to 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 International Standard applies to general and industrial loupes.

1. TYPES AND MAIN PARAMETERS

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

Table 1

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

where 250 is the distance of the best vision, mm;
- rear focal length of the magnifier, mm.
Formula (1) - for magnifiers with a focal length of up to 150 mm, formula (2) - for magnifiers with a focal length of more than 150 mm.

1.2. Depending on the purpose, the types of magnifiers indicated in Table 2 are established.

table 2

	Purpose	Design	magnifier group	Optical system
	For reading, for viewing the details of drawings, photo prints, small items, etc.	Folding, with handle, tripod	Small, medium, high magnification
LI (measuring)	For linear and angular measurements	Frame with diopter adjustment and measuring scale	Medium magnification	Multi-lens corrected
LZ (grain)	To view the grain in order to determine its quality	framed	low magnification	Simple single lens
Champions League (hourly)	For use in the watch and jewelry industry		Small and medium magnification
LT (textile)	To determine the quality and density of fabric (number of threads per 1 cm)	In folding frame		Simple single-lens, multi-lens corrected
LK (for viewing the frame)	To view frames on film	In a frame with a diopter shift and a frame window		Simple single lens

1.3. The symbol of a magnifying glass shall include the type designation, the number of lenses, the magnification and the designation of this standard.
Symbol examples:
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. Loupes should be manufactured in accordance with the requirements of this standard and the specification for a particular type of magnifier.

2.2. Loupe lenses must be made of optical glass according to GOST 3514 or optical plastic with a protective coating.

2.3. The surface cleanliness of the lenses must comply with the requirements of GOST 11141; the purity class should be selected depending on the diameters of the magnifier lenses in accordance with Table 3.

Table 3

(Changed edition, Rev. N 1).

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

2.5. Loupe lenses must be firmly fixed and must not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must not have nicks, dents or other defects.

2.7. In folding magnifiers, the swivel must ensure that the magnifier is fixed with a handle at any opening angle.

2.8. The design of grain magnifiers should provide light access to the object in question.

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

2.10. For loupes with plastic optics, the lens clamping rings must be made of plastic.

2.11. The magnifying glass body, made of metal, must have a durable anti-corrosion coating.

2.12. On the frame of the magnifying glass should be applied:
trademark of the manufacturer;
zoom magnification.

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

2.15. Loupes must be resistant to mechanical stress during transportation with an overload of 4g.

2.16. Loupes should be made in climatic design 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.
(Changed edition, Rev. N 1).

Approvedand put into effect

Decree of the State Standard of the USSR

STATE STANDARD OF THE UNION OF THE SSR

TYPES, BASIC PARAMETERS.

GENERAL TECHNICAL REQUIREMENTS

Magnifiers.Types, basic parameters.

General technical requirements

GOST 25706-83

Group P43

OKP 44 3580

Validity

INFORMATION DATA

1. Performers: V.I. Belikov (topic leader); G.I. Belyakova; I.P. Kamalova.

2. Approved and put into effect by the Decree of the USSR State Committee for Standards of 04/08/1983 N 1684.

3. Term of inspection - 1992, frequency of inspection - 5 years.

4. Instead of GOST 7594-75; GOST 8307-72; GOST 8309-75; GOST 9461-74; GOST 10513-73; GOST 18504-73.

5. Reference normative and technical documents

──────────────────────────────────────────┬───────────────────────

──────────────────────────────────────────┼───────────────────────

GOST 3514-76│2.2

GOST 11141-84│2.3

GOST 15150-69│2.16

6. Reissue (September 1988) with Amendment No. 1 approved in May 1988 (IUS 9-88).

7. Checked in 1988. The validity period was extended until 01/01/1994 (Decree of the USSR State Committee for Standards dated 05/31/1988 N 1577).

This International Standard applies to general and industrial loupes.

1. TYPES AND MAIN PARAMETERS

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

Table 1

─────────────────────┬────────────────────────────────────────────

Group│Rating range

├─────────────────────┬──────────────────────

│increase│linear field of view,

││mm

─────────────────────┴─────────────────────┴──────────────────────

Small magnificationD about 5 incl. .200 - 20

Medium magnificationS in. 5 to 10 included .40 - 10

Large increase "1010 - 4

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

, (1)

, (2)

where 250 is the distance of the best vision, mm;

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

Formula (1) - for magnifiers with a focal length of up to 150 mm, formula (2) - for magnifiers with a focal length of more than 150 mm.

(Revised edition, Rev. No. 1).

1.2. Depending on the purpose, the types of magnifiers indicated in Table. 2.

table 2

───────────────┬─────────────────┬──────────────┬──────────┬───────────────

Type│Purpose│Constructive│Group│Optical

│ │ performance │ loops │ system

LP │ For reading, for │ Folding, │ Small, │ Simple

│drawings,│tripod │large│multi-lens

│photo prints,││ increase│ corrected

│small items │││

│etc.│││

───────────────┼─────────────────┼──────────────┼──────────┼───────────────

LI│ Linear and│ Framed,│Medium │Multi-lens

(measuring)│angular measurements│having│increase│corrected

││diopter││

││progress and││

││measuring ││

││scale││

LZ (grain) │ For viewing│In a frame│ Small│ Simple

│grain with a goal││ magnification│single lens

│defining it│││

│quality│││

───────────────┼─────────────────┤├──────────┤

LCH (hourly)│ For application││ Small and │

│hourly and││average│

│jewellery ││magnification│

│industry│││

LT│ To determine │ In folding││ Simple

(textile)│quality and│frame││single lens,

│tissue density│││multi-lens

│(number) of threads│││ corrected

│per 1 cm2 │││

───────────────┼─────────────────┼──────────────┤├───────────────

LK│ Viewing│ Framed││ Plain

(for viewing │frames on│having││single lens

frame) │ cine film │ diopter ││

││progress and││

││frame window ││

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

An example of a symbol for a single-lens textile magnifier with magnifying glass optics:

The same, a three-lens corrected measuring magnifier with magnification plastic optics:

2. GENERAL TECHNICAL REQUIREMENTS

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

2.2. Loupe lenses must be made of optical glass according to GOST 3514-76 or optical plastic with a protective coating.

2.3. The cleanliness of the lens surface must comply with the requirements of GOST 11141-84; the purity class should be selected depending on the diameters of the lenses of the magnifiers in accordance with the table. 3.

Table 3

────────────────────┬──────────────────────────────────────────────────────

Lens diameter, mm │Clarity class according to GOST 11141-84

├──────────────────────────┬───────────────────────────

│ Magnifiers with glass optics │Magnifiers with polymer optics

────────────────────┼──────────────────────────┼───────────────────────────

Up to 10 incl. │IV│V

St. 10 "50"│V│VI

"50 "80"│VI│VII

"80│VII│VIII

(Revised edition, Rev. No. 1).

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

2.5. Loupe lenses must be firmly fixed and not rotate in the frames.

2.6. The surfaces of the frame and body of magnifiers must not have nicks, dents or other defects.

2.7. In folding magnifiers, the swivel must ensure that the magnifier is fixed with a handle at any opening angle.

2.8. The design of grain magnifiers should provide light access to the object in question.

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

2.10. For loupes with plastic optics, the lens clamping rings must be made of plastic.

2.11. The magnifying glass body, made of metal, must have a durable anti-corrosion coating.

2.12. On the frame of the magnifying glass should be applied:

trademark of the manufacturer;

zoom magnification.

2.13. Magnifier lenses made of polymeric materials should not have gross casting defects. Underpressing, sagging, yellowness of the material, as well as raids 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 to plus 45 °C.

2.15. Loupes must be resistant to mechanical stress during transportation with an overload of 4 g.

2.16. Magnifiers should be made in climatic version UHL category 4.2 according to GOST 15150-69.

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

(Revised edition, Rev. No. 1).

4. The validity period was removed according to 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 International Standard applies to general and industrial loupes.

1. TYPES AND MAIN PARAMETERS

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

Table 1


Group	Rating range
	increase	linear field of view, mm
low magnification	Up to 5 incl.
Medium magnification	St. 5 to 10 incl.
high magnification

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

where 250 is the distance of the best vision, mm;

- rear focal length of the magnifier, mm.

Formula (1) - for magnifiers with a focal length of up to 150 mm, formula (2) - for magnifiers with a focal length of more than 150 mm.

1.2. Depending on the purpose, the types of magnifiers indicated in Table 2 are established.

table 2


	Purpose	Design	magnifier group	Optical system
	For reading, for viewing the details of drawings, photo prints, small items, etc.	Folding, with handle, tripod	Small, medium, high magnification
LI (measuring)	For linear and angular measurements	Frame with diopter adjustment and measuring scale	Medium magnification	Multi-lens corrected
LZ (grain)	To view the grain in order to determine its quality	framed	low magnification	Simple single lens
Champions League (hourly)	For use in the watch and jewelry industry		Small and medium magnification
LT (textile)	To determine the quality and density of fabric (number of threads per 1 cm)	In folding frame		Simple single-lens, multi-lens corrected
LK (for viewing the frame)	To view frames on film	In a frame with a diopter shift and a frame window		Simple single lens

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

Symbol examples:

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. Loupes should be manufactured in accordance with the requirements of this standard and the specification for a particular type of magnifier.

2.2. Loupe lenses must be made of optical glass according to GOST 3514 or optical plastic with a protective coating.

Table 3


Lens diameter, mm
	Magnifiers with glass optics	Magnifiers with polymer optics
Up to 10 incl.
St. 10 "50"
" 50 " 80 "