Look up lens in Wiktionary, the free dictionary.
A lens is an optical element which converges or diverges light.
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Lens may also refer to:
A lens is an optical element which converges or diverges light.
Lens may also refer to:
The Pas-de-Calais is a department in northern France named after the French designation of the Strait of Dover, which it borders. It has the most communes of all the departments of France, 890, and is the 8th most populous. It had a population of 1,465,278 in 2019. The Calais Passage connects to the Port of Calais on the English Channel. The Pas-de-Calais borders the departments of Nord and Somme and is connected to the English county of Kent via the Channel Tunnel.
A camera obscura is a darkened room with a small hole or lens at one side through which an image is projected onto a wall or table opposite the hole.
Nord-Pas-de-Calais ; Picard: Nord-Pas-Calés); is a former administrative region of France. Since 1 January 2016, it has been part of the new region Hauts-de-France. It consisted of the departments of Nord and Pas-de-Calais. Nord-Pas-de-Calais borders the English Channel (west), the North Sea (northwest), Belgium and Picardy (south). The majority of the region was once part of the historical (Southern) Netherlands, but gradually became part of France between 1477 and 1678, particularly during the reign of king Louis XIV. The historical French provinces that preceded Nord-Pas-de-Calais are Artois, French Flanders, French Hainaut and (partially) Picardy. These provincial designations are still frequently used by the inhabitants.
A camera is an optical instrument used to capture and store images or videos, either digitally via an electronic image sensor, or chemically via a light-sensitive material such as photographic film. As a pivotal technology in the fields of photography and videography, cameras have played a significant role in the progression of visual arts, media, entertainment, surveillance, and scientific research. The invention of the camera dates back to the 19th century and has since evolved with advancements in technology, leading to a vast array of types and models in the 21st century.
Estrée or Estrées may refer to:
The 7 arrondissements of the Pas-de-Calais department are:
The arrondissement of Béthune is an arrondissement of France in the Pas-de-Calais department in the Hauts-de-France region. It has 104 communes. Its population is 293,991 (2016), and its area is 707.4 km2 (273.1 sq mi).
The canton of Harnes is a canton situated in the department of the Pas-de-Calais and in the Hauts-de-France region of northern France.
The arrondissement of Lens is an arrondissement of northern France in the Pas-de-Calais department in the Hauts-de-France region. It has 50 communes. Its population is 367,839 (2016), and its area is 351.5 km2 (135.7 sq mi).
In optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center. The role of the diaphragm is to stop the passage of light, except for the light passing through the aperture. Thus it is also called a stop. The diaphragm is placed in the light path of a lens or objective, and the size of the aperture regulates the amount of light that passes through the lens. The centre of the diaphragm's aperture coincides with the optical axis of the lens system.
Grenay is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. It is part of the arrondissement of Lens, the canton of Wingles and the Communaupole de Lens-Liévin. Its population was 6,799 in 2019. The current mayor is Christian Champire, elected in 2020.
The Canton of Rouvroy is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. By order of the prefect of the region, on October 18, 2006, the canton was attached to the arrondissement of Lens rather than that of Arras with effect from 1 January 2007. It had a total of 19,419 inhabitants (2012).
The Canton of Carvin is a canton situated in the department of the Pas-de-Calais and in the Hauts-de-France region of northern France.
The canton of Courrières is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 20,301 inhabitants (2012).
The Canton of Leforest is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 23,699 inhabitants (2012).
The canton of Lens-Est is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 20,023 inhabitants (2012).
The canton of Lens-Nord-Est is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 3 communes, which joined the canton of Lens in 2015. It had a total of 21,392 inhabitants (2012).
The canton of Lens-Nord-Ouest is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 16,928 inhabitants (2012).
The canton of Liévin-Sud is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 24,326 inhabitants (2012).
The canton of Noyelles-sous-Lens is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 3 communes, which joined the canton of Harnes in 2015. It had a total of 21,608 inhabitants (2012).