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- Une microlentille est une petite lentille, généralement d'un diamètre inférieur au millimètre et pouvant atteindre une dizaine de micromètres. Étant donné la petite taille de ces objets, ils peuvent être sujet à des phénomènes de diffraction optique.L'une des géométries les plus communes pour ces microlentilles est de type plan-convexe (l'une de ces surfaces est plane et l'autre convexe) mais il existe aussi des lentilles à gradient d'indice utilisant la variation de l'indice de réfraction du matériau qui les compose pour réaliser la focalisation de la lumière.Une autre classe de microlentilles, parfois appelées microlentilles de Fresnel, reprend le concept des lentilles de Fresnel à plus petite échelle. (fr)
- A microlens is a small lens, generally with a diameter less than a millimetre (mm) and often as small as 10 micrometres (µm). The small sizes of the lenses means that a simple design can give good optical quality but sometimes unwanted effects arise due to optical diffraction at the small features. A typical microlens may be a single element with one plane surface and one spherical convex surface to refract the light. Because micro-lenses are so small, the substrate that supports them is usually thicker than the lens and this has to be taken into account in the design. More sophisticated lenses may use aspherical surfaces and others may use several layers of optical material to achieve their design performance. A different type of microlens has two flat and parallel surfaces and the focusing action is obtained by a variation of refractive index across the lens. These are known as gradient-index (GRIN) lenses. Some micro-lenses achieve their focusing action by both a variation in refractive index and by the surface shape. Another class of microlens, sometimes known as micro-Fresnel lenses, focus light by refraction in a set of concentric curved surfaces. Such lenses can be made very thin and lightweight. micro-lenses focus light by diffraction. They have grooves with stepped edges or multilevels that approximate the ideal shape. They have advantages in fabrication and replication by using standard semiconductor processes such as photolithography and reactive-ion etching (RIE). Micro-lens arrays contain multiple lenses formed in a one-dimensional or two-dimensional array on a supporting substrate. If the individual lenses have circular apertures and are not allowed to overlap, they may be placed in a hexagonal array to obtain maximum coverage of the substrate. However, there will still be gaps between the lenses which can only be reduced by making the micro-lenses with non-circular apertures. With optical sensor arrays, tiny lens systems serve to focus and concentrate the light onto the photo-diode surface, instead of allowing it to fall on non-photosensitive areas of the pixel device. Fill-factor is the ratio of the active refracting area, i.e. that area which directs light to the photo-sensor, to the total contiguous area occupied by the microlens array. (en)
- マイクロレンズアレイ（英: Microlens Arrays）とは、を束ねてアレイ状にしたもの。あるいはマトリックス状にレンズをアレイ状に面加工したもの。 (ja)
- Een microlens is een klein lensje, meestal met een diameter kleiner dan een millimeter, en vaak zelfs tot 10 μm. Door de kleine afmetingen kunnen eenvoudige lensontwerpen een goede optische kwaliteit leveren. Daar staat tegenover dat er soms ongewenste effecten kunnen optreden ten gevolge van diffractie langs de randen van de kleine componenten. (nl)
- Микролинзы — часть оптической системы матрицы цифрового фотоаппарата, положительные линзы малого размера, находящиеся в непосредственной близости от светочувствительных пикселей или составляющих единое целое с ними. (ru)
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- Une microlentille est une petite lentille, généralement d'un diamètre inférieur au millimètre et pouvant atteindre une dizaine de micromètres. Étant donné la petite taille de ces objets, ils peuvent être sujet à des phénomènes de diffraction optique.L'une des géométries les plus communes pour ces microlentilles est de type plan-convexe (l'une de ces surfaces est plane et l'autre convexe) mais il existe aussi des lentilles à gradient d'indice utilisant la variation de l'indice de réfraction du matériau qui les compose pour réaliser la focalisation de la lumière.Une autre classe de microlentilles, parfois appelées microlentilles de Fresnel, reprend le concept des lentilles de Fresnel à plus petite échelle. (fr)
- マイクロレンズアレイ（英: Microlens Arrays）とは、を束ねてアレイ状にしたもの。あるいはマトリックス状にレンズをアレイ状に面加工したもの。 (ja)
- Een microlens is een klein lensje, meestal met een diameter kleiner dan een millimeter, en vaak zelfs tot 10 μm. Door de kleine afmetingen kunnen eenvoudige lensontwerpen een goede optische kwaliteit leveren. Daar staat tegenover dat er soms ongewenste effecten kunnen optreden ten gevolge van diffractie langs de randen van de kleine componenten. (nl)
- Микролинзы — часть оптической системы матрицы цифрового фотоаппарата, положительные линзы малого размера, находящиеся в непосредственной близости от светочувствительных пикселей или составляющих единое целое с ними. (ru)
- A microlens is a small lens, generally with a diameter less than a millimetre (mm) and often as small as 10 micrometres (µm). The small sizes of the lenses means that a simple design can give good optical quality but sometimes unwanted effects arise due to optical diffraction at the small features. A typical microlens may be a single element with one plane surface and one spherical convex surface to refract the light. Because micro-lenses are so small, the substrate that supports them is usually thicker than the lens and this has to be taken into account in the design. More sophisticated lenses may use aspherical surfaces and others may use several layers of optical material to achieve their design performance. (en)
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- Microlentille (fr)
- Microlens (en)
- マイクロレンズアレイ (ja)
- Microlens (optica) (nl)
- Микролинзы (ru)
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