GB1461866A - Measurement of optical properties of surfaces - Google Patents
Measurement of optical properties of surfacesInfo
- Publication number
- GB1461866A GB1461866A GB4146874A GB4146874A GB1461866A GB 1461866 A GB1461866 A GB 1461866A GB 4146874 A GB4146874 A GB 4146874A GB 4146874 A GB4146874 A GB 4146874A GB 1461866 A GB1461866 A GB 1461866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- retro
- reflected
- radiation
- sept
- measured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/57—Measuring gloss
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
1461866 Reflectometers A R L ROSS 18 Sept 1975 [24 Sept 1974] 41468/74 Heading G2J Surface roughness is measured by an optical system in which light from source e is reflected from a first test surface S on to a second test surface S (in Fig. 2, the two surfaces are identical) e.g. by the use of a retro-reflecting sheet R. The arrangement is such that translation and/or rotation of the surfaces S has substantially no effect on the positional and/or angular distribution of reflected radiation in the regions where it is measured. Roughness may be assessed according to:- (1) The spread of reflected radiation about the specular direction, (2) The variation in reflectivity with wavelength, or (3) the depolarisation of the radiation. In Fig. 3 (not shown) the retro-reflecting sheet R of Fig. 2 is replaced by a cube-corner reflector and in Fig. 4 (not shown) by an array of cubecorners. In Fig. 5 (not shown) the two test surfaces form a corner reflector. In Fig. 6 (not shown) a polarizer and an analyzer are added to the system of Fig. 2 while in Fig. 7 (not shown) an optical modulator is used to separate the retro-reflected signal from that due to diffusely reflected radiation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4146874A GB1461866A (en) | 1974-09-24 | 1974-09-24 | Measurement of optical properties of surfaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4146874A GB1461866A (en) | 1974-09-24 | 1974-09-24 | Measurement of optical properties of surfaces |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1461866A true GB1461866A (en) | 1977-01-19 |
Family
ID=10419826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4146874A Expired GB1461866A (en) | 1974-09-24 | 1974-09-24 | Measurement of optical properties of surfaces |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1461866A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0152894A2 (en) * | 1984-02-20 | 1985-08-28 | Siemens Aktiengesellschaft | Device for optically detecting local inhomogeneities in the structure of tested objects |
DE3427838A1 (en) * | 1984-07-27 | 1986-02-06 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | ROUGHNESS PROBE |
DE3733041A1 (en) * | 1987-09-30 | 1989-04-13 | Siemens Ag | TEST DEVICE FOR DETECTING SPATIAL IRREGULARITIES IN THE SURFACE STRUCTURE OF AN OBJECT |
US5168322A (en) * | 1991-08-19 | 1992-12-01 | Diffracto Ltd. | Surface inspection using retro-reflective light field |
US5206700A (en) * | 1985-03-14 | 1993-04-27 | Diffracto, Ltd. | Methods and apparatus for retroreflective surface inspection and distortion measurement |
WO2004010094A1 (en) * | 2002-07-19 | 2004-01-29 | Luxtron Corporation | Emissivity corrected radiation pyrometer integral with a reflectometer and roughness sensor for remote measuring of true surface temperatures |
-
1974
- 1974-09-24 GB GB4146874A patent/GB1461866A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0152894A2 (en) * | 1984-02-20 | 1985-08-28 | Siemens Aktiengesellschaft | Device for optically detecting local inhomogeneities in the structure of tested objects |
EP0152894A3 (en) * | 1984-02-20 | 1987-05-06 | Siemens Aktiengesellschaft Berlin Und Munchen | Device for optically detecting local inhomogeneities in the structure of tested objects |
DE3427838A1 (en) * | 1984-07-27 | 1986-02-06 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | ROUGHNESS PROBE |
US5206700A (en) * | 1985-03-14 | 1993-04-27 | Diffracto, Ltd. | Methods and apparatus for retroreflective surface inspection and distortion measurement |
DE3733041A1 (en) * | 1987-09-30 | 1989-04-13 | Siemens Ag | TEST DEVICE FOR DETECTING SPATIAL IRREGULARITIES IN THE SURFACE STRUCTURE OF AN OBJECT |
US5168322A (en) * | 1991-08-19 | 1992-12-01 | Diffracto Ltd. | Surface inspection using retro-reflective light field |
WO2004010094A1 (en) * | 2002-07-19 | 2004-01-29 | Luxtron Corporation | Emissivity corrected radiation pyrometer integral with a reflectometer and roughness sensor for remote measuring of true surface temperatures |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |