35results about How to "Improving the imaging distance" patented technology

The invention discloses a method for manufacturing a dustproof photography module. The method comprises the following steps of: (1) manufacturing a lens, a light sensing chip and a planar printed circuit substrate; (2) manufacturing a hollow sealing layer with a thickness; and (3) manufacturing a light transmittance protection layer by a transparent material with a thickness, and arranging the light transmittance protection layer on the upper surface of the sealing layer, wherein the light transmittance protection layer completely covers the sealing layer; and an imaging protection region of which the perpendicular height is not less than 0.65 millimeters is formed between the position over the light sensing region of the light sensing chip and the upper surface of the light transmittance protection layer. The invention also discloses a device for implementing the method. The method and the device have the advantages that the sealing layer and the protection layer are arranged on the light sensing chip, so that an imaging distance is increased, and an image can be formed until the thickness of dust falling on the protection layer is more than 30 mu m; and the problem about dust prevention of the photography module is effectively solved.

The invention discloses a passive single pixel telescope imaging system, and belongs to an optical imaging field. The passive single pixel telescope imaging system comprises an imaging lens, a spatial light modulator, a light beam convergent lens and a data acquisition card, which are orderly arranged on a light path; the spatial light modulator is arranged at an imaging position of the imaging lens; the light beam convergent lens is located on a light path of an output beam of the spatial light modulator; the data acquisition card is provided with a photovoltaic conversion chip; the data acquisition card and the spatial light modulator are connected with a processor through a data line. The imaging system is simple in structure and low in environmental requirement; besides, the acquisition time can be effectively reduced and the recovery of target images under a low sampling rate can be realized. The invention further discloses a passive single pixel telescope imaging method. The imaging method is simple in recovery algorithm and fast in image reconstruction speed, and can shoot and reconstruct the images of large sizes, so that the imaging method has a higher application value in the macro fields like military, remote sensing satellite, astronomy and engineering detection, etc.

Disclosed in the invention is a line scanning imaging device. A line laser source and intensity modulation module (1) generates one-dimensional detection laser with random intensity distribution; a beam space shaping module (2) carries out space shaping on detection laser; a line scanning and emission module (3) carries out illumination on a target area by using long and narrow bar-shaped detection laser and line scanning is realized; a signal returned by a target is collected by an echo collection module (4); a light intensity point detection module (5) receives the signal; a line scanning image reconstruction module (6) carries out association calculation on the received point detection signal and light intensity distribution at the target position to realize reconstruction; and an image splicing module (7) carries out splicing of all bar-shaped imaging results to obtain an image of the target area. According to the invention, the linear array scanning illumination and point detection are combined, so that a long detection distance is obtained; and association calculation time is reduced based on one-dimensional image reconstruction. The method can be applied to scanning and imaging of a target during moving target imaging or rapid movement.

The invention discloses a diode pumped solid state laser (DPL) and a debugging method therefor. The diode pumped solid state laser comprises a semiconductor pumping source, a coupling system, laser crystals, a bi-color plano-convex cylindrical surface totally-reflecting mirror, reflecting laser, a polarizing film, a quarter-wave plate, a pockels cell, and a plano-concave cylindrical surface output mirror, wherein the semiconductor pumping source is used for outputting pumping light; the coupling system is used for transmitting and homogenizing the pumping light, and coupling the pumping light into the laser crystals; the laser crystals are used for providing gain; the bi-color plano-convex cylindrical surface totally-reflecting mirror is arranged between the coupling system and the laser crystals and used for transmitting the pumping light and reflecting laser; the polarizing film is used for polarizing the laser; the quarter-wave plate is used for rotating the polarization direction of the passed laser for 45 degrees; when the pockels cell is not applied with voltage, the pockels cell is equivalent to a plain film; when the pockels cell is applied with quarter-wave voltage, the pockels cell is equivalent to the quarter-wave plate; and the plano-concave cylindrical surface output mirror is used for outputting laser. According to the diode pumped solid state laser provided by the invention, the repetition frequency of the pumping light is improved, the pumping light interval is shortened, the power density of the pumping light is improved; and in addition, the diode pumped solid state laser is small in divergence angle, so that the ranging or imaging distance is improved, and the application range is expanded.

A display apparatus including a display unit, a first reflector, a second reflector, a third reflector and a lens unit is provided. The display unit emits an image beam. The first reflector is disposed on a transmission path of the image beam. The second reflector is disposed on the transmission path of the image beam from the first reflector. The third reflector is disposed on the transmission path of the image beam from the second reflector. The lens unit is disposed on the transmission path of the image beam from the third reflector. The image beam emitted from the display unit passes through a space defined between the second reflector and the third reflector and is transmitted to the first reflector. Afterward, the image beam is sequentially reflected by the first reflector, the second reflector and the third reflector, and then passes through the lens unit.

A method and an apparatus for photograph classification and storage by matching an image characteristic of a first photograph with an image characteristic of a second photograph in a directory, and calculating the similarity between the first photograph and the second photograph and presenting the first photograph and the second photograph in a front-end page as located in a same subdirectory when the similarity between the first photograph and the second photograph is larger than a preset threshold. The beneficial effects being that a number of similar images in a user's photo album can be sorted efficiently and placed into the same directory to facilitate the user's management and viewing of the photographs.

The invention discloses a computed ghost imaging system and a computed ghost imaging method based on Kohler illumination. The system comprises a He-Ne laser device, a beam expander, a collimating lens, a diaphragm, a polarizer, a spatial light modulator, an analyzer, a Kohler mirror, an aperture diaphragm, a field diaphragm, a collecting lens, a to-be-imaged object, a convergent lens and a bucket detection orderly arranged on a light path, wherein the spatial light modulator and the bucket detector are respectively in electrical connection with a computer, the computer is used for acquiring a high-contrast image of the to-be-imaged object through the computed ghost imaging technology, and a Kohler illumination mode and a Lorentz shaping incoherent light source are introduced into a computed ghost imaging process. In the system and the method provided by the invention, in combination with the Kohler illumination mode and the Lorentz shaping incoherent light source, a defect of unevenness of intensity of illumination of an object plane can be eliminated and resolving power of the computed ghost imaging system can be improved, and high-contrast and high-resolution computed ghost imaging of the to-be-imaged object can be realized.

A computer-implemented method for scanning a side of an object to identify a region of interest is provided. The method can include determining, using one or more computing devices, a distance between a side of an object and an imaging device, determining, using the one or more computing devices, a scanning pattern for an imaging device that includes a controllable mirror, based on the distance between the side of the object and the imaging device, moving a controllable mirror according to the scanning pattern to acquire, using the one or more computing device and the imaging device, a plurality of images of the side of the object, and identifying, using the one or more computing devices, the region of interest based on the plurality of images.

The invention provides a method for improving the photoelectric platform imaging quality through precision balancing, and belongs to the field of photoelectric technologies. To improve the channel for improving the balancing precision of a photoelectric platform, the method includes the steps that 1, after the photoelectric platform is installed, a servo drive motor is removed; 2, the bearing pretightening force is lowered, and a bearing is cleaned; 3, various wires of the effective load are removed, and the resisting moment generated between the effective load and an outer frame due to wire drag is prevented effectively; 4, balancing is conducted through a traditional method of centroid balancing introduced in a background technology; 5, the bearing pretightening force is added, the servo drive motor is installed, various wires are inserted and bounded, and precision balancing is finished. By means of the method, balancing resistance moment brought out by various friction force and wire drag is eliminated, compared with a conventional balancing method, the balancing accuracy is improved, the possibility that linear vibration of the photoelectric platform is converted into angular vibration is lowered, the visual axis stabilization accuracy of the photoelectric platform is improved, and the imaging quality and operating range of the photoelectric platform are improved beneficially.

The invention discloses an optical fiber combination-based numerical control phase-modulated light source device and a method. The light source device comprises a pulse laser emission module, a beam splitting module, a phase modulation and energy amplification module and a collimation and combination module, wherein the pulse laser emission module is used for emitting first pulse laser to the beamsplitting module; the beam splitting module is used for splitting the received first pulse beam into N beams of second pulse laser, and the N beams of second pulse laser are transmitted to the phasemodulation and energy amplification module through an optical fiber, N being more than or equal to 4; the phase modulation and energy amplification module is used for performing phase modulation and pulse energy amplification on each beam of second pulse laser to obtain N beams of third pulse laser; and the collimation and combination module is used for combining the N beams of third pulse laser to make the N beams of third pulse laser intersected and interfere on a conjugate surface to obtain a speckle field. According to the device and the method, the energy utilization rate is high, the imaging and detection distance is prolonged, and the repetition frequency of a laser pulse is increased to increase the imaging frame frequency of a laser correlated imaging system.

The invention discloses a large-aperture infrared super-lens camera, and belongs to the technical fields of infrared imaging and micro-nano photonics. The large-aperture infrared super-lens camera comprises a large-aperture super-lens, an infrared focal plane array detector, a super-lens mechanical assembly part and a shell, wherein an aperture of the large-aperture super-lens is greater than 50mm, thickness of the large-aperture super-lens is less than 2mm, and a distance between the large-aperture super-lens and the infrared focal plane array detector is greater than 30mm; the super-lens mechanical assembly part adopts a buffer structure to carry out fixation, adjustment and anti-seismic protection on the super-lens; and the shell adopts a heat-insulating coating and is sealed, so that heat-insulating and waterproof protection is performed on a lens. According to the invention, by adopting a strict electromagnetic field value, a diffraction design algorithm and a large-area semiconductor process preparation method, an aperture of a super-lens is increased to more than 50mm; and under the condition that the F number of the super-lens meets requirements of an image signal-to-noise ratio, a focal length and magnification of a camera are greatly improved, the problems of a short focal length, small magnification and an insufficient imaging distance of a conventional super-lens camera are solved, and detection imaging can be carried out on middle and long-distance objects.

The invention discloses a self-adaptive imaging device and a self-adaptive imaging method. The device comprises an optimal wavelength estimating system and an imaging system; the optimal wavelength estimating system comprises a first light source, a first light receiving unit, a first photoelectric detection unit and an optimal wavelength calculating unit; the first light source, a target-free air/water body, the first light receiving unit, the first photoelectric detection unit and the optimal wavelength calculating unit are orderly aligned along the light path; the first light path is wide spectroscopic light source; the imaging system comprises a second light source, a second light receiving unit, a second photoelectric detection unit, a data processing unit and a central control unit.Through estimating the air/water environment where the target locates by the optimal wavelength estimating system before detecting the target, the optimal wavelength solution under the environment isacquired; the second light source is controlled through the central control unit, thus the output of the optimal wavelength or approximate optimal wavelength is realized; the light beam with optimal wavelength is applied to image the detecting target, thus the imaging distance is improved, and the best imaging quality is acquired on the same imaging distance.

Disclosed are optical writing devices each of which has three arrays of light shutter elements for emitting light signals of red, green and blue, respectively. The arrays of light shutter elements of each optical writing device are adjustably provided in an image forming apparatus with respect to sub-scan direction.

The invention relates to an optical imaging module. The optical imaging module sequentially comprises a reflecting film, an optical element and a first polarizing film from an object side to an imageside, the reflective film is capable of transmitting light from an object side and reflecting light from an image side. The optical element includes at least one lens, and the optical element has refractive power. The first polaroid allows light polarized along a first direction to pass through and reflects light polarized along a second direction, wherein the first direction is different from thesecond direction, and the light reflected by the first polaroid reaches the reflecting film from the image side, and is emitted towards the image side after the reflecting film generates reflection of changing the polarization state at least once. The invention further relates to VR electronic equipment comprising the optical imaging module. The optical imaging module can achieve the effect of size reduction, and meets the requirements of miniaturization design of VR electronic equipment.

An image forming apparatus includes: a first image bearing member; a plurality of second image bearing member; an endless belt opposing the first and second image bearing members; a driving roller; a supporting roller; a first transfer member opposing the first image bearing member; a plurality of second transfer members provided opposing the second image bearing members; and a supporting member for supporting the second transfer members. The supporting member is movable between a first position as a contact position and a second position as a spaced position. When image formation is effected in a state in which the supporting member is positioned in the first position, a nip between the first image bearing member and the belt member is positioned closer to a side where the supporting roller is positioned than a rectilinear line connecting contact positions of the belt member with the second image bearing members.