GB/T 7242-2010Centering error of lenses (English PDF)
透镜中心偏差
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 1, 2010
Implementation date
May 1, 2011
Scope
GB/T 7242-2010 is the English-translated version of 透镜中心偏差.
GB/T 7242-2010 is the Chinese standard "Centering error of lenses". Its scope clause reads: This standard specifies the center of the lens deviation of terms and definitions, and the selected reference axis labels, labeling and inspection center deviation.
This standard applies to the spherical surface with the spherical or spherical plane and consisting of a single lens and a cemented lens having a rotationally symmetrical edge surface.
Correct Other edge shape having a lens (for example. rectangular lenses) is also applicable. Its clauses include terms and definitions.
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Document preview — GB/T 7242-2010
National Standard of the People's Republic of China
- ICS
- 01.100.20
- Classification
- N 30
- Replacing
- GB/T 7242-1987
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.2 Reference axis datumaxis
- 3.3 Geometry axes
1 Scope
This standard specifies the center of the lens deviation of terms and definitions, and the selected reference axis labels, labeling and inspection center deviation.
This standard applies to the spherical surface with the spherical or spherical plane and consisting of a single lens and a cemented lens having a rotationally symmetrical edge surface. Correct
Other edge shape having a lens (for example. rectangular lenses) is also applicable.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 1182 Geometrical product specifications (GPS) geometric tolerances of form, orientation, location and runout tolerancing (GB/T 1182-2008, ISO 1101.2004, IDT)
GB/T 1224 geometrical optics terminology, symbols
GB/T 13323-2009 optical mapping (ISO 10110-1.2006, NEQ)
GB/T 13962 Optical Instrument term
3 Terms and Definitions
GB/T 1224, GB/T 13323-2009 and GB/T 13962 and established the following terms and definitions apply to this standard.
3.1
Centering optical surface normals at the vertex of the reference axis deviation amount.
An optical center of the lens surface of the centering deviation is the angle between the normal and the reference axis is measured at the apex of this angle called a loft, with Greece
X represents the letter (see FIG. 1).
figure 1
3.2 Reference axis datumaxis
For labeling, testing and calibration center deviation, press locate parts or components of the optical surface of the specific properties of the selected axis.
3.3 Geometry axes
The axis of rotation of the lens edge surfaces.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Cited by
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Editions of GB/T 7242
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7242-2010 | Centering error of lenses | current edition | Current |
| GB/T 7242-1987 | Centering error of lenses | previous edition | Superseded |
This page sells the current edition, GB/T 7242-2010. Earlier editions are listed for reference only.
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