NBS Special Publication, Issue 250U.S. Government Printing Office, 1965 |
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... lenses , goggle lenses , etc .. Refractometric instruments_ 61 62 202.205 Refractive indices___ 62 202.206 Polarimetric instruments ... 63 202.207 Modulation transfer function measurements of lenses_ Photographic research .. 202.311 ...
... lenses , goggle lenses , etc .. Refractometric instruments_ 61 62 202.205 Refractive indices___ 62 202.206 Polarimetric instruments ... 63 202.207 Modulation transfer function measurements of lenses_ Photographic research .. 202.311 ...
Page 50
202.201 Optical instruments 202.202 Photographic objectives 202.203 Optical components , spectacle lenses , goggle lenses , etc. 202.204 Refractometric instruments 202.205 202.206 Refractive indices Polarimetric instruments Photographic ...
202.201 Optical instruments 202.202 Photographic objectives 202.203 Optical components , spectacle lenses , goggle lenses , etc. 202.204 Refractometric instruments 202.205 202.206 Refractive indices Polarimetric instruments Photographic ...
Page 58
... lens barrel or shut- A visual or a photographic method is used , depending upon the probable use of the lens . The back focal distance determines the lens position with respect to the focal plane for an ter . airplane camera or other ...
... lens barrel or shut- A visual or a photographic method is used , depending upon the probable use of the lens . The back focal distance determines the lens position with respect to the focal plane for an ter . airplane camera or other ...
Page 59
... lens so far as its definition characteristics are concerned . It is performed photographically . In general , if a lens yields satisfactory results when subjected to this test , it is probable that no additional test for lateral ...
... lens so far as its definition characteristics are concerned . It is performed photographically . In general , if a lens yields satisfactory results when subjected to this test , it is probable that no additional test for lateral ...
Page 60
... lens mounted in camera ( * ) 202.202m Location of the principal point of autocollimation , and check of 90 ° condition for lens mounted in camera ... . ( * ) See footnote at end of table . 202.202n Setting the principal point of ...
... lens mounted in camera ( * ) 202.202m Location of the principal point of autocollimation , and check of 90 ° condition for lens mounted in camera ... . ( * ) See footnote at end of table . 202.202n Setting the principal point of ...
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Common terms and phrases
Ac-dc accepted for calibration accuracy additional American Standards Association API Standard apparatus Appendix attenuators bolometer bolometer units bulb and liquid Bureau of Standards calibration or test changes in emf charged dependent color temperature condenser microphones current fees decibels Determination diameter Electric electrode electromotive force end of table errors exceeding footnote at end frequency Gage blocks gages-determination glass Group of Standard higher or lower hygrometers ice-point reading indications inductors instruments Invar Item Description Fee laboratory length liquid column mass measurements meter National Reference Group ohms perature phase angle plug Precision pressure Radium ratio reference standards REPORT OF CALIBRATION resistance thermometer resistors ring gages sample saturated standard cells schedule special tests specifications spectrophotometer stability standard resistors submitted for calibration tabulated corrections apply temperature range test points test_ tests not covered thermal conductivity thermocouple thermometer was tested U.S. DEPARTMENT uncertainty voltage dividers waveguide weights
Popular passages
Page 11 - Standard Reference Materials issued by the National Bureau of Standards to calibrate a measurement system, or to produce scientific data that can be referred to a common base. A schedule of prices and amounts, as well as directions for ordering, is included.
Page 49 - ... index markers. Since it is necessary to determine the shift of the principal point resulting from prism effect in the lens, the equivalent focal length of the lens as mounted In the camera is incidentally determined...
Page 55 - ... wire loops, spring balances, tension handles, or other attachments liable to be detached or changed in shape. The error in the total length of the tape, when supported horizontally throughout its length at the standard temperature of 68° F. (20° C.) and at standard tension, shall not be more than 0.1 inch per 100 feet (2 mm per 25 m).