light filter
1
4.3
- noun
- /laɪt ˈfɪltər/
:
filtro de luz
- This once required two or more cameras, each with its own light filter.
Examples
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Filters sells a pair of 10 x 25 Roof Prism binoculars with integral white light filters, called "Binomite," for around $50.
Academic text (2004) -
The water acts as a giant light filter.
Academic text (2001) -
Each camera had a different light filter: near-infrared, red, and yellow-green.
Academic text (1996) -
If a flame is present, light filters are used to pass the narrow-band laser signal as they reject much of the background light.
Academic text (1996) -
The Wide Open Group: These are the districts or schools that apply a light filter and are friendly to teachers and teacher-librarians who want access to almost any tool or system that has the potential for teaching and learning.
Academic text (2009) -
The obtained images of microfossils in the reflecting light using mercury lamps and the corresponding light filter of the green zone of the visible spectrum showed details of the morphology and the external ornamentation of the surfaces.
Academic text (2018) -
In addition, the COMS may conduct a follow-up assessment with distance visual devices (such as handheld monocular telescopes) or with light filters, as recommended by the low vision clinician.
Academic text (2004) -
Many photographers use alight filter to enhance the colors in their images.
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The light filter reduced glare, making it easier to see the screen in bright sunlight.
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To protect your eyes, it is important to use alight filter when working with powerful lasers.
Synonyms
139
2.8
A thing that removes unwanted parts from water, air, light and sound
A thin panel that spreads light to make shadows softer
Antonyms
How Opaque
Surface Forms
Morphology
The meaning is directly derivable from combining 'light' (electromagnetic brightness) with 'filter' (a device that removes or reduces something): a 'light filter' is simply a filter for light that reduces intensity or certain wavelengths. This noun–noun compound follows a common compositional pattern found in many languages, so a B1 learner who knows both constituents would readily infer the meaning.
Etymology
Light filter names a thin piece of glass or plastic that acts like a screen: the filter lets some light through and blocks or changes the rest. That's why a light filter is used to 'reduce the amount' or change certain 'colors' of light that reach a camera, a microscope, or your eyes.