BE351355A - - Google Patents
Info
- Publication number
- BE351355A BE351355A BE351355DA BE351355A BE 351355 A BE351355 A BE 351355A BE 351355D A BE351355D A BE 351355DA BE 351355 A BE351355 A BE 351355A
- Authority
- BE
- Belgium
- Prior art keywords
- field
- light
- adaptation
- eye
- instrument
- Prior art date
Links
- 230000006978 adaptation Effects 0.000 claims description 23
- 230000035945 sensitivity Effects 0.000 claims description 18
- 230000000007 visual effect Effects 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 11
- 230000008034 disappearance Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 description 13
- 239000011521 glass Substances 0.000 description 8
- 210000001525 retina Anatomy 0.000 description 8
- 230000004438 eyesight Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000750 progressive effect Effects 0.000 description 3
- 210000001747 pupil Anatomy 0.000 description 3
- 210000003423 ankle Anatomy 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000004301 light adaptation Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010010904 Convulsion Diseases 0.000 description 1
- 208000012661 Dyskinesia Diseases 0.000 description 1
- 241001316172 Elacatinus lori Species 0.000 description 1
- 101150009194 cap4 gene Proteins 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/12—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using wholly visual means
- G01J1/122—Visual exposure meters for determining the exposure time in photographical recording or reproducing
- G01J1/124—Visual exposure meters for determining the exposure time in photographical recording or reproducing based on the comparison of the intensity of measured light with a comparison source or comparison illuminated surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Eye Examination Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE351355A true BE351355A (de) |
Family
ID=26309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE351355D BE351355A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE351355A (de) |
-
0
- BE BE351355D patent/BE351355A/fr unknown
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