Abstract:
A color separation element array includes a plurality of color separation elements arranged in two dimensions and separating an incident light according to a wavelength such that, of the incident light, a light of a first wavelength is directed to a first direction and a light of a second wavelength that is different from the first wavelength is directed to a second direction that is different from the first direction, in which each of the plurality of color separation elements includes a first element and a second element that are sequentially arranged according to a traveling direction of the incident light, and the first element and the second element of at least one of the plurality of color separation elements are shifted with respect to each other.
Abstract:
A stacked type image sensor with improved optical characteristics, which may result from a color separation element, and an image pickup apparatus including this image sensor. The stacked type image sensor includes first and second light sensing layers arranged in a stacked manner, and color separation elements positioned between the first and second light sensing layers. Accordingly, the first light sensing layer absorbs and detects light of a first wavelength band, and the second light sensing layer detects light of second and third wavelength bands separated by the color separation elements.
Abstract:
At least one example embodiment discloses an image sensor with an improved light utilization efficiency based on reflective color filters. Since the image sensors may use most of an incident light for forming an image by using reflective color filters, light loss due to light absorption may be reduced. Therefore, light utilization efficiency of the image sensors may be improved while embodying color purity.
Abstract:
An image sensor includes a sensor substrate including a plurality of unit pixels; a plurality of unit color filters on the sensor substrate, each unit color filter of the plurality of unit color filters including a plurality of nanoposts; a color separating lens array on the plurality of unit color filters, the color separating lens array being configured to separate and condense incident light based on a wavelength of the incident light; and a spacer layer between the sensor substrate and the color separating lens array, wherein at least one of a diameter and a height of the plurality of nanoposts provided in each unit color filter of the plurality of unit color filters in regions are different from each other based on values of a chief ray angle (CRA) corresponding to the regions.
Abstract:
Provided is an image sensor including a color separating lens array. The image sensor includes a sensor substrate including a plurality of first photosensitive cells and a plurality of second photosensitive cells configured to sense light, and a color separating lens array including a plurality of first regions respectively corresponding to the plurality of first photosensitive cells and each including a first fine structure, and a plurality of second regions respectively corresponding to the plurality of second photosensitive cells and each including a second fine structure that is different from the first fine structure, wherein, among incident light incident on the color separating lens array, light of a first wavelength and light of a second wavelength are branched into different directions and focused on the first photosensitive cells and the second photosensitive cells.
Abstract:
An image sensor includes a sensor substrate includes first, second, and third pixels respectively sensing first, second and third wavelengths of light, A color separating lens array changes phase of light of the first, second, and third wavelengths, and condenses the phase-changed light onto the first, second and third pixels, respectively. The color separating lens array includes first to third pixel corresponding regions respectively facing the first to third pixels. The first pixel corresponding region includes a plurality of first nanoposts, the second pixel corresponding region includes a plurality of second nanoposts, and the third pixel corresponding region includes a plurality of third nanoposts, a second center nanopost having a greatest cross-sectional width among the second nanoposts overlaps a center of the second pixel, and a third center nanopost having a greatest cross-sectional width among the third nanoposts does not overlap a center of the third pixel.
Abstract:
Provided are an image sensor including a patterned antireflection layer and an electronic apparatus including the image sensor. The image sensor includes a sensor substrate including a plurality of first pixels sensing light having a first wavelength and a plurality of second pixels sensing light having a second wavelength different from the first wavelength, a nano-photonic lens array including a plurality of nanostructures configured to condense an incident light onto the plurality of first pixels and the plurality of second pixels, and an antireflection layer disposed on a light incident surface of the nano-photonic lens array and including a plurality of holes arranged periodically and two-dimensionally, wherein the plurality of holes include a plurality of first holes arranged along a boundary between first and second pixels adjacent to each other and a plurality of second holes disposed to face an inner region of the first pixel or the second pixel.
Abstract:
Provided are a color separation element and an image sensor including the same. The color separation element includes a spacer layer; and a color separation lens array, which includes at least one nano-post arranged in the spacer layer and is configured to form a phase distribution for splitting and focusing incident light according to wavelengths, wherein periodic regions in which color separation lens arrays are repeatedly arranged are provided, and the color separation lens array is configured to interrupt phase distribution at the boundary of the periodic regions.
Abstract:
An image sensor includes: a sensor substrate including a plurality of first pixels and a plurality of second pixels; a spacer layer on the sensor substrate; and a color separating lens array on the spacer layer and changing condensing light of a first wavelength on each of the first pixels and condensing light of a second wavelength on each of the second pixels. The color separating lens array includes a first color separating lens array layer including a plurality of first nanoposts, a first dielectric material layer arranged among the plurality of first nanoposts, and a plurality of first etch prevention patterns arranged respectively under the plurality of first nanoposts.
Abstract:
A color separation element and an image sensor including the same are disclosed. The color separation element includes a spacer layer, and a color separation lens array including at least one nano-post provided in the spacer layer to control a phase distribution of incident light so that light having the same wavelength of the incident light is multi-focused on a plurality of target regions; and periodic regions in which the phase distribution control layer is repeatedly arranged.