A photographic or optical filter that absorbs light of all wavelengths to the same extent, causing overall dimming but no change in colour.
中性滤光片
Example sentencesExamples
We have also qualitatively tested the effect of reducing the incident light intensity by use of neutral density filters.
An action spectrum for light-induced death was carried out using excitation filters and neutral density filters to vary the excitation wavelength and keep peak illumination intensity constant.
Simulations of senile miosis using a pupil-constricting drug and the age-related increase in lenticular light absorption using a neutral density filter in young observers could not account for the results.
Another use for this filter on sunny days is that it can be used as a neutral density filter in order to give you longer shutter speed times.
Illumination was provided by a 150 W quartz halogen slide projector lamp attenuated by neutral density filters.
Definition of neutral density filter in US English:
neutral density filter
noun
A photographic or optical filter that absorbs light of all wavelengths to the same extent, causing overall dimming but no change in color.
中性滤光片
Example sentencesExamples
Another use for this filter on sunny days is that it can be used as a neutral density filter in order to give you longer shutter speed times.
We have also qualitatively tested the effect of reducing the incident light intensity by use of neutral density filters.
Simulations of senile miosis using a pupil-constricting drug and the age-related increase in lenticular light absorption using a neutral density filter in young observers could not account for the results.
Illumination was provided by a 150 W quartz halogen slide projector lamp attenuated by neutral density filters.
An action spectrum for light-induced death was carried out using excitation filters and neutral density filters to vary the excitation wavelength and keep peak illumination intensity constant.