68 results about "Digital single-lens reflex camera" patented technology

A digital single-lens reflex camera includes a lens unit and a camera body. The lens unit has a photographing lens and an identification data memory for storing identification data to identify the photographing lens. The camera body, to which the lens unit is detachably attached, has an imaging device which receives light transmitted through the photographing lens to generate an image corresponding to a subject, a lens data memory for storing lens data that indicates the shading characteristics of the photographing lens, a lens data reader that reads the lens data based on the identification data, and an image corrector that corrects an error in the image of the subject caused by shading, based on the lens data read by the lens data reader and imaging device data that indicates the shading characteristics of the imaging device.

A digital single-lens reflex camera is configured for making it possible to reduce deterioration in image quality due to a camera shake or an object movement and to easily pick up an image with a good image quality. In a digital single-lens reflex camera (1), when an object speed is detected on the basis of a detected object movement, a body microprocessor (12) judges if the object speed is equal to a threshold value (A) or more and, if it is smaller than the threshold value (A), controls a conversion lens camera shake correcting device (82) in a conversion lens (2) or a camera body shake correcting device (75) in a camera body (3) to carry out the camera shake correction. Further, if the object speed is equal to or more than the threshold value (A), the body microprocessor (12) makes a digital signal gain setting unit (111) high in gain so as to increase the ISO sensitivity or makes a shatter speed faster to set a shorter exposure time and has a plurality of images continuously picked up under different exposure conditions.

The invention relates to a picture shooting method, a picture shooting device and a picture shooting system. The picture shooting method comprises the steps of recognizing a target shooting object in a current shooting interface; determining a target area corresponding to the target shooting object; working out the occupied proportion of the target area in the current shooting area; and when the proportion is more than or equal to a preset proportion, blurring the area in the current shooting area besides the target area, and thereby obtaining a target picture. According to the picture shooting method, device and system, the target shooting object in the current shooting interface is recognized, when the occupied proportion of the target area in the current shooting area is more than or equal to the preset proportion, the area in the current shooting area besides the target area is blurred, and thereby the background blurring effect similar to the large aperture of a digital single lens reflex camera can be achieved.

The invention discloses a digital detection instrument for detecting optical distortion of light transmitting glass, which consists of hardware and software. The hardware is a digital photographic device which comprises a calibration board, a standard testing map, a standard grid map, a testing bracket, a digital single lens reflex camera, a tripod, a special computer and a glass test piece to be tested. The standard testing map and the standard grid map are respectively pasted on the front side and the back side of the calibration board; the glass test piece to be tested is mounted on the testing bracket; the digital single lens reflex camera is arranged directly behind the glass test piece to be tested; the posture of the digital single lens reflex camera is adjusted by two direction gradienters on the tripod so as to ensure that the optical axis of the camera goes through the geometric center of the glass test piece to be tested and is vertical to the calibration board; the digital single lens reflex camera is connected with the special computer through a data wire of the camera; and the software is a special software 'Optical Distortion' provided by the device itself. The method for detecting the optical distortion of the light transmitting glass comprises six steps. The digital detection instrument has the advantages of wide measurement range of the whole visual area, high automation degree and high detection precision.

A lens control unit transmits the pattern of openings and non-openings of an aperture plate as a pattern image to a digital single-lens reflex camera when an aperture plate driving mechanism places the aperture plate at a specified position on an optical path in accordance with an external instruction.

A digital single-lens reflex camera determines whether a predetermined time has passed since the start of display. If the predetermined time has not passed yet, the camera performs face detection to determine if a user is looking into an optical finder of the camera. When the face detection is performed, a system control circuit identifies the present content displayed. When the displayed content is an ordinary image, photographing information, or attention-seeking alert, display of the content is immediately stopped. When the displayed content is alert prohibiting imaging, it is checked whether a switch operation has been performed. If the switch operation has not been performed at all, or a switch operation for canceling the displayed alert has not been performed, timer counting is cleared before the timer counting is initiated again.

The invention relates to a wide-angle zoom lens system easy to ensure telecentricity particularly suited for digital single-lens reflex cameras. The wide-angle zoom lens system comprises a first group G1 of negative power, a second group G2 of positive power and a third group G3 of positive power. Upon zooming from a wide-angle end to a telephoto end, at least the first group G1 and the second group G2 move such that a spacing between the first group G1 and the second group G2 becomes narrow and a spacing between the second group G2 and the third group G3 becomes wide. The first group G1 comprises, in order from its object side, a first lens subgroup SG1a of negative refracting power and a second lens subgroup SG1b of negative refracting power. Upon focusing from a far object point to a near object point, the first lens subgroup SG1a and the second lens subgroup SG1b move toward the object side with a narrowing spacing between them.

The invention discloses an ultra-large-aperture full-width lens for a digital single-lens reflex camera. The ultra-large-aperture full-width lens sequentially comprises a first lens body, a second lens body, a third lens body, a fourth lens body, a fifth lens body, a sixth lens body, a seventh lens body, an eighth lens body, a ninth lens body and a tenth lens body from the object space. The first lens body is a spherical surface positive lens protruding towards the object space. The second lens body is a spherical surface positive lens protruding towards the object space. The third lens body is a spherical surface positive lens protruding towards the object space. The fourth lens body is a spherical surface positive lens caving towards the object space. The fifth lens body is a spherical surface negative lens protruding towards the object space. The sixth lens body is a spherical surface positive lens protruding towards the object space. The seventh lens body is a spherical surface negative lens protruding towards the object space. The eighth lens body is a spherical surface positive lens parallel to the object space. The ninth lens body is a spherical surface positive lens protruding towards the object space. The tenth lens body is a spherical surface positive lens caving towards the object space. The full-width lens for the digital single-lens reflex camera has the ultra-large aperture and is exquisite in appearance and extremely high in cost performance.

A digital single-lens reflex camera with preview functionality is provided that includes an imaging device, a monitor, and a preview image display processor. The imaging device captures an image through a photographing lens. The monitor displays the image captured by the imaging device. The preview image display processor displays the preview image captured by the imaging device on a monitor.

The invention discloses a fluorescence microscope capable of controlling a light source by use of a touch screen system. The fluorescence microscope comprises a microscope host unit using an infinite multi-color difference correction optical system, a fluorescence objective lens using high-resolution infinite plan high numerical aperture, a tri-ocular observation system provided with a digital single lens reflex camera, a fluorescence color filter group with a transmittance of 90% to 95%, an LED (light emitting diode) white light source as the specimen background light source, and an LED fluorescence excitation light source for emitting an excited light to the specimen, wherein the fluorescence objective lens, the tri-ocular observation system, the fluorescence color filter group, the LED white light source and the LED fluorescence excitation light source are arranged on the microscope host unit; and the microscope host unit is also provided with a touch screen for controlling the brightness of the LED white light source and the LED fluorescence excitation light source. The touch screen as the light source control unit of the fluorescence microscope provided by the invention is the simplest, the most convenient and natural man-machine interaction manner at present.

A digital single-lens reflex camera comprises: an optical viewfinder; a retractable movable mirror for guiding subject images to the optical viewfinder; an image display device, serving as an electronic viewfinder, for displaying a subject image captured by an image-capturing device with the movable mirror retracted from the optical path; and a control device for starting image data acquisition with the image-capturing device after elapsing of a predetermined time, taking into consideration the amount of time necessary for the movable mirror to be retracted from the optical path and maximum diaphragm driving time of a diaphragm driving unit, following the user making a releasing operation while displaying a moving image on the image display device. This realizes a digital single-lens reflex camera which allows settings wherein the shutter release time lag is constantly the same, regardless of whether the optical viewfinder or the electronic viewfinder is used.

The invention discloses a non-contact type color measurement method and a non-contact type measurement device based on a digital technology. The non-contact type color measurement method comprises the following steps of: respectively measuring and shooting selected international standard color cards through a spectroradiometer and a digital single lens reflex camera to obtain a CIELAB value and source data of each color sample; then optimizing the CIELAB value and the source data by utilizing least squares fit to obtain a weight coefficient; and calculating the color value corresponding to a measured sample according to the weight coefficient and the picture source data of any measured sample. The non-contact type color measurement method disclosed by the invention has the advantages of simple application, high accuracy, high speed, simultaneous measurement of pairwise samples and very high practical value. Besides, the invention also provides the color measurement device based on the method, and the color measurement device comprises a lamp box (1), an object placing platform (2) and a digital single lens reflex camera (4), wherein the lamp box (1) is used for illuminating the sample; the object placing platform (2) is used for placing the international standard color cards and a sample (3) which needs to be measured; and the digital single lens reflex camera (4) can read the source data.

As a back panel of a view camera, the connector panel (100) attaches a digital single lens reflex camera to a view camera. The connector panel comprises a base panel (110), sliding panel (140), protruding pieces (130), and a mount ring (160). Two guiding strips (150) are attached to the base panel, allowing the sliding panel to be shifted side-to-side. This horizontal movement produces panorama photographs with no distortions and financial burden. Moreover, photographs can be taken at various angles as the mount ring, where the DSLR camera is attached, can rotate both clockwise and counter-clockwise. Lastly, the connector panel allows view camera's images to be saved as digital images through DSLR camera's imaging sensor, such as CCD and CMOS. Hence, view camera's images become easier to be saved, edited, and developed.

The invention provides a digital single-lens reflex camera photo sharing method. The digital single-lens reflex camera photo sharing method comprises the steps that: a digital single-lens reflex camera shoots at least one photo, and transmit photo data to a server through a wireless transmission module and wireless internet access equipment; the server takes the phot data as at least one photo group and establishes a first network access interface and a first network address pointing to the first network access interface, and the first network access interface displays each photo in the photo group; the first network access interface is accessed by at least one display equipment, and the display equipment displays the photo in the photo group; the display equipment releases at least one photo in a selective manner, and establishes at least a second network access interface, at least a second network address and a second two-dimensional code associated with each second network address; and a mobile terminal accesses the second network access interface corresponding to the second two-dimensional code through scanning the second two-dimensional code, so as to display the corresponding photo.

A cleaning device is used to remove an alien substance adhering to a surface of an optical member arranged in front of a solid image sensing device inside a lens replaceable digital single-lens reflex camera. The cleaning device includes a supporting member that is supported by a user, and an elastic member, a surface 12 thereof has cohesiveness and is formed in a substantially square shape larger than equally divided four parts of a 135 format of a camera and smaller than an APS-C format of the camera.

The invention discloses a method for constructing a geological outcrop three-dimensional model based on a digital single lens reflex camera. The method basically comprises the following steps: selecting a geological outcrop feature point or setting an artificial mark as a scale mark point; collecting a geological outcrop image by using a fixed focal length camera; performing aerial triangulation,automatically extracting the connection points, determining the image position by an inverse calculation of the connection point; adding model scale information; performing the aerial triangulation again; constructing an triangular irregular network through the connection points, generating a white body model, and performing image attaching to obtain a geological outcrop three-dimensional model; optimizing the model, filling the holes of the model and clipping the areas of non-interest, to achieve model optimization. The method provided by the invention has the advantages of being scientific and reasonable, easy to implement, high in precision, and the like, and uses the digital single lens reflex camera to perform image acquisition on the geological outcrop to construct the geological outcrop three-dimensional model.

The invention relates to the field of new material fluorescence probes, and more particularly to the application of an aggregation-induced fluorescence probe in fingerprint fluorescence imaging. The fluorescence probe has a general structural formula shown in formula (1): wherein R1 and R2 are substituent groups at any position of Ar1 and Ar2, and at least one of R1 and R2 is a hydrophilic group;and Ar1 and Ar2 are aromatic rings. By using the fluorescent probe provided by the invention and by using an ordinary digital single lens reflex camera, a potential fingerprint on the surface of a smooth object can be displayed by an ultraviolet light exciting method. Fluorescence fingerprint imaging with low background noise, high brightness and high definition is obtained more conveniently and directly.

Provided is a high-throughput plant type measurement method based on image processing. The method includes the steps that 1 branches on a plant main stem and stem sections with pods on the main stem are cut off from a mature plate, and the branches and the stem sections are bagged and numbered for standby application; 2 the obtained stem sections are placed on a sample containing plate, image shooting is conducted on the stem sections placed on the sample containing plate through a high-speed image shooting instrument or a digital single-lens reflex camera, and images are collected and stored in an image collection card; 3 image processing software is used for drawing path straight lines between the main stem and the branches and between the main stem and pod stalks, included angles between the labeled path straight lines serve as branching angles and pod insertion angles respectively, included angle data are input manually to form an Excel file, and the data are stored for later analysis and counting so as to obtain plant branching angles and pod insertion angles. The results of the branching angles and the pot insertion angles measured through the method are good in accuracy, low in error, high in stability and good in repeatability, and the standard deviation of the high-throughput plant type measurement method is much lower than that of a conventional field manual measurement method.

The invention relates to a fluorescent dye probe for latent fingerprint detection as well as a preparation method and application thereof. The core chemical structural formula of the probe is as shown in a formula I defined in the description, wherein R1 is an aromatic ring (including aromatic heterocyclic ring) compound or methyl, and at least one of R2 and R3 is a hydrophilic group. The functional fluorescent dye probe molecule provided by the invention can be used for selectively dyeing DNA and latent fingerprints in latent fingerprints, then the latent fingerprints on the surfaces of various objects can be shown by using a method of exciting light with different emission wavebands after being dyed by virtue of portable excitation of light sources with various wavebands and a digital single lens reflex camera, and a high-definition latent fingerprint fluorescence image is obtained.