Hon Hai Precision Industry Co., Ltd.

Tsinghua University

Lenovo (Beijing) Limited

Beijing Lenovo Software Ltd.

Wei Hou

Shou-Shan Fan

Jun Zhu

Guo-Fan Jin

Tong Yang

Xiao-Fei Wu

Jingjing Liu

The present disclosure provides a method for information processing. The method is applied in an electronic device and comprises: acquiring, upon detecting that the electronic device has been switched from a first state to a second state, a priority list storing a priority of each application that is initiated by a user among all applications when the electronic device is switched to the first state again; and selecting one or more applications from the priority list for preloading. Also provided is an apparatus for information processing.

Preloading applications from a priority list based on memory usage status of an electronic device

A method for designing an off-axis three-mirror imaging system with freeform surfaces is provided. A primary mirror initial structure, a secondary mirror initial structure, and a tertiary mirror initial structure are established. A number of first feature rays are selected, while the primary mirror initial structure and the secondary mirror initial structure unchanged. The first feature rays are forward ray tracked from an object space to an image detector. A number of first feature data points are calculated to obtain a tertiary mirror. A number of fields and a number of second feature rays are selected, while the secondary mirror initial structure and the tertiary mirror unchanged. The second feature rays are reverse ray tracked from the image detector to the object space. A number of second feature data points are calculated to obtain the primary mirror.

Method for designing off-axis three-mirror imaging system with freeform surfaces

A oblique camera lens includes: a primary mirror configured to reflect a light ray to form a first reflected light; a secondary mirror located on a first path of light reflected from the primary mirror and configured to reflect the first reflected light to form a second reflected light; a tertiary mirror located on a second path of light reflected from the secondary mirror and configured to reflect the second reflected light to form a third reflected light; and an image sensor located on a third path of light reflected from the tertiary mirror and configured to receive the third reflected light; wherein each of the first reflecting surface and the third reflecting surface is a sixth order xy polynomial freeform surface; and a field of view of oblique camera lens in an Y-axis direction is greater or equal to 35&#xb0; and less than or equal to 65&#xb0;.

Oblique camera lens

A method for designing a oblique camera lens comprising: step (S1), establishing an initial system, the initial system comprises a primary mirror initial structure, a secondary mirror initial structure, and a tertiary mirror initial structure; step (S2), building a new image relationship; step (S3), keeping the primary mirror initial structure and the secondary mirror initial structure unchanged; selecting a plurality of first feature rays; step (S4), keeping the secondary mirror initial structure and the tertiary mirror unchanged; selecting a plurality of fields and a plurality of second feature rays.

Method for designing oblique camera lens

A construction method of freeform surface shape based on XY-polynomial obtains a plurality of data points of a freeform surface according to an object point and an imaging point in a three-dimensional Cartesian coordinates system Oxyz. Each of the plurality of data points comprises a coordinate value Qand a normal vector N. A first sum of squares e(P) of coordinate differences in z direction between the coordinate value Qand the freeform surface is applied, and by a second sum of squares e(P) between the normal vector Nof the data points and a normal vector nof the freeform surface, a modulus of vector differences is acquired. An evaluation function &#x192;(p)=e(P)+we(P) is proposed and a plurality of freeform surface shapes obtained by selecting and applying different weightings. A final freeform surface shape &#x3a9;is chosen from the plurality of freeform surface shapes.

Method of forming a freeform surface shaped element for an illumination system

An off-axis three-mirror optical system with freeform surfaces includes a primary mirror, a secondary mirror, a tertiary mirror, and an image sensor. The primary mirror receives light rays first and the secondary mirror is located on a path of light reflected from the primary mirror. The tertiary mirror receives light reflected from the secondary mirror. The image sensor is located on a path of light reflected from the tertiary mirror. Each reflecting surface of the primary and tertiary mirrors is a sixth order xy polynomial freeform surface. The secondary mirror reflecting surface is a spherical surface. A field of view of the off-axis three-mirror optical system with freeform surfaces in Y-axis direction is greater or equal to 65&#xb0;. A field of view of the off-axis three-mirror optical system with freeform surfaces in X-axis direction is greater or equal to 0.8&#xb0;.

Off-axis three-mirror optical system with freeform surfaces

An off-axial three-mirror system includes a primary mirror, a secondary mirror, a tertiary mirror, and an image sensor. The secondary mirror is located on a reflective optical path of the primary mirror. The tertiary mirror is located on a reflective optical path of the secondary mirror. The image sensor is located on a reflecting optical path of the tertiary mirror. The primary mirror and the tertiary mirror are formed as one piece. The surface type of both the primary mirror and the tertiary mirror is a freeform surface.

Off-axial three-mirror system

An off-axial three-mirror system includes a primary mirror, a secondary mirror, a tertiary mirror, and an image sensor. The secondary mirror is located on a reflective optical path of the primary mirror. The tertiary mirror is located on a reflective optical path of the secondary mirror. The image sensor is located on a reflecting optical path of the tertiary mirror. The primary mirror and the tertiary mirror are formed as one piece. The surface type of both the primary mirror and the tertiary mirror is a freeform surface. The primary mirror is a convex mirror, and the tertiary mirror is a concave mirror.

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Beijing, China

Wei Hou