To improve brightness of image information visually recognized by a user while using plastic for a light guide plate. An image display element includes: a substrate made of resin; an incident diffraction grating that diffracts incident light; and an exit diffraction grating that emits the light, the incident diffraction grating being formed on a first surface of the substrate, the exit diffraction grating being formed on a second surface on a side opposite to the first surface of the substrate, and the exit diffraction grating being formed on one surface.

The present disclosure discloses an optical imaging lens assembly which includes, sequentially from an object side to an image side along an optical axis, a first lens having a refractive power with a concave image-side surface; a second lens having a refractive power; a third lens having a positive refractive power; a fourth lens having a refractive power; a fifth lens having a positive refractive power with a convex image-side surface; and a sixth lens having a positive refractive power with a convex object-side surface and a concave image-side surface, wherein half of a maximum field-of-view angle HFOV of the optical imaging lens assembly satisfies: HFOV>55°, and a distance TTL from an object-side surface of the first lens to an imaging plane along the optical axis and half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy: 1.2<TTL/ImgH<2.3.

An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens has negative refractive force. Both an object-side surface and an image-side surface of the seventh lens are aspheric surfaces. At least one surface of the seventh lens has at least an inflection point thereon. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.

In one example, an on-mirror adaptive optics system may include a substrate including a deformable surface, a controller and a plurality of pockets defined in a substrate. Each of the pockets may include a an electrooptical sensor and an actuator. The controller may be communicatively coupled to the electrooptical sensor and the actuator. The controller may be configured to generate control voltages based on signals received from the electrooptical sensor to deform a portion of the deformable surface proximate a corresponding pocket of the plurality of pockets.

The present application provides a camera module array, comprising at least two camera modules, wherein at least one of the camera modules has a free-form lens sheet, and the free-form lens sheet performs active alignment according to an actual imaging result received by a photosensitive chip, so that a difference between an actual reference direction of the free-form lens sheet and a reference direction determined by an optical design is not greater than 0.05 degrees. The present application further provides a corresponding assembly method for camera module array. In the present application, a TTL of the camera modules can be reduced by means of the free-form lens sheet so as to, for example, make a TTL of a wide-angle module equal or approximately equal to a TTL of a telephoto module, so that a dual-camera module composed of the wide-angle module and the telephoto module is easily mounted in a terminal device such as a mobile phone. The present application can also effectively improve the mounting precision of the free-form lens sheet.

The present invention provides an optical imaging lens. The optical imaging lens comprises eight lens elements positioned in an order from an object side to an image side. Through controlling convex or concave shape of surfaces of the lens elements, the optical imaging lens may shorten system length with a good imaging quality.

Various embodiments set forth optical patterning systems. In some embodiments, an optical patterning system includes multiple liquid crystal (LC) layers and a substrate including circuitry that is connected to each of the LC layers. Each LC layer is independently addressable, via connections to the circuitry in the substrate, to modulate a different degree of freedom (DOF) of light, such as an amplitude, a phase, a distinct polarization component, or an amplitude or a phase of a polarization component of the light. In addition, each LC layer can be configured to operate in a non-resonant mode, in which light passes through the LC layer a single time, or in a resonant mode, in which light bounces back and forth between reflective layers multiple times to enhance the interaction with the LC layer.

According to examples, a system for designing optical components to provide passive athermalization and aberration correction is described. The system may include a processor and a memory storing instructions. The processor, when executing the instructions, may cause the system to select one or more optical elements to be included in the optical component based on the received design specifications, select one or more optical element configurations based on the selected one or more optical elements and implement an optimization function to optimize the selected one or more optical element configurations. The processor, when executing the instructions, may then determine if the one or more optical element configurations meet one or more initial specifications, enable one or more adjustment(s) to the one or more optical element configurations and determine if an optical element configuration meet one or more additional specifications.

A light guide member includes an incident portion, an emission portion, a reflection portion, and an inclined portion. An internal reflection angle inside the reflection portion and the emission portion is larger than an incident angle of an external light with respect to a first normal line that is a normal line of the emission portion. A first inclination angle that is an inclination angle of the incident portion with respect to the first normal line is smaller than the internal reflection angle. A height from the emission portion to a second side of the incident portion is larger than a distance between the emission portion and the reflection portion. A second inclination angle that is an inclination angle of the inclined portion with respect to the first normal line is smaller than the internal reflection angle.

Embodiments are disclosed for projection systems with rotatable anamorphic lenses. In an embodiment, an optical projection system comprises: a light source; an optical integrator configured to receive light from the light source and to distribute a uniform pattern of light; a relay lens system including two or more rotatable anamorphic lenses, the anamorphic lenses oriented about an optical axis to transform the uniform pattern of light into an image having a specified aspect ratio; at least one spatial light modulator configured to receive the image and direct a spatially modulated image along an optical path; and at least one projection lens configured to receive the spatially modulated image from the optical path and to project the spatially modulated image onto an image plane with the specified aspect ratio. In a DLP projection system, the relative angle of the two or more rotatable anamorphic lenses is less than 90 degrees to pre-distort the image, resulting in a more rectangular spatially modulated image having the specified aspect ratio.