Please select the most similar patent number from A, B, C and D. Which number is?
A wide-field and large-size bionic holographic three-dimensional dynamic display method, comprising: loading on a spatial light modulator (1) a calculation hologram generated in real time; and changing a light path to form a large field angle by means of a micro-lens array (3) arranged on a light-emergent surface of a pixel structure of the spatial light modulator (1) or a diffractive optical element (4) having the same optical characteristics as the micro-lens array (3), wherein each micro-lens in the micro-lens array (3) corresponds to each pixel point (2) of the pixel structure of the spatial light modulator (1) on a one-to-one basis. A field angle for three-dimensional holographic display is enlarged while saving costs and simplifying the design of a system structure, thereby realising reproduction in a large size. Moreover, due to the optimisation of the system structure, pixels on the spatial light modulator (1) can be fully used, thereby avoiding the loss of resolution, and a higher display fineness is provided at the same time, thereby satisfying the increasing demands of people.
A: A light modulator (10) and a projection display system. The light modulator (10) comprises a surface-angle conversion assembly (11) and a modulation assembly (12). The surface-angle conversion assembly (11) is used for performing surface-angle conversion and converging on multiple light source beams to form multiple convergent beams corresponding to the light source beams, the multiple convergent beams being separated in an angle space. The modulation assembly (12) is used for modulating the multiple convergent beams to form image light; and the modulation assembly (12) comprises multiple pixel units (121); each pixel unit (121) comprises at least three sub-pixels; and the convergent beams respectively enter sub-pixels of the pixel units, and are in one-to-one correspondence with the sub-pixels. The surface-angle conversion assembly (11) comprises a microlens array consisting of multiple microlenses, each microlens being matched with the position of at least one pixel unit to converge the convergent beams to the pixel units (121). The method above can improve the light efficiency, and the present invention is simple in structure and small in volume.
B: Disclosed are a three-dimensional stereoscopic display panel, and a display method and a display apparatus therefor. The three-dimensional stereoscopic display panel comprises: a first display panel (11), a second display panel (12) and a micro-lens array (13) stacked in sequence, wherein the first display panel (11) and the second display panel (12) have the same light emergent direction, and the micro-lens array (13) is located in the light emergent direction; the distance between the first display panel (11) and the micro-lens array (13) is greater than the focal length of the micro-lens array (13); the distance between the second display panel (12) and the micro-lens array (13) is less than the focal length of the micro-lens array (13); the second display panel (12) is a transmissive display panel; and a real image corresponding to the first display panel (11) and a virtual image corresponding to the second display panel (12) are respectively located at two sides of the micro-lens array, thereby greatly enlarging the depth range of a three-dimensional image. A final three-dimensional image is formed by imaging pixels of two display panels (11, 12), thereby also increasing the resolution of the three-dimensional image.
C: Disclosed is a wavefront reconstruction device based on extended rotationally symmetric structured light illumination. The device comprises a laser (1), an attenuation mirror (2), a microscope objective lens (3), a pinhole (4), a collimating lens (5), a beam splitter prism (6), a spatial light modulator (7), a lens (8) to be measured, and an image acquisition device (9) that are sequentially arranged. Further provided is a wavefront reconstruction method based on extended rotationally symmetric structured light illumination. According to the method, a spatial light modulator is used to modulate incident parallel light into structured light similar to a phase grating; a modulation pattern of the spatial light modulator is changed, and the characteristic that a pixel unit of the spatial light modulator is not infinitely small is used, such that the spatial light modulator is made to generate different structured light; diffraction light spots are collected on a focal plane, and a target surface and a structured light surface are updated at the same time by using an algorithm, such that not only is a target to be measured recovered, a real structured light wavefront is also recovered, thereby avoiding a recovery error caused by inaccurate known structured light information.
D: A light modulator and a projection display system. The light modulator (10) comprises a plane-angle conversion assembly (11) and a modulation assembly (12), the plane-angle conversion assembly (11) performs plane-angle conversion on multiple light beams from a light source, to form multiple convergent light beams, and the multiple convergent light beams being separated in a plane space; the modulation assembly (12) modulates the multiple convergent light beams to form image light; the modulation assembly (12) comprises a plurality of pixel units (121), at least four sub-pixels (121a-121d) in the pixel units (121) comprise supplementary sub-pixels, the multiple light beams from a light source comprise supplementary light beams, the supplementary light beams correspond to the supplementary sub-pixels, and the supplementary light beams are used for supplementing the brightness of the light beams incident to the plane-angle conversion assembly (11) or enlarging the color gamut of the light beams incident to the plane-angle conversion assembly (11); the plane-angle conversion assembly (11) comprises a micro lens array composed of a plurality of micro lenses, and the micro lenses match the positions of the pixel units (121).
Answer: B