63 results about "Simple lens" patented technology

The present invention discloses the method and system for measuring the gas component by the spontaneous Raman dissemination process wherein the system comprises a laser, a collecting system, a detection system and a data processing system, the laser device sends linear polarization laser, the collecting system is a lens, the detecting system is a grating optical spectrum device with a ICCD array detector which can be used to regulate the optical spectrum of the sampled article. The invention can greatly increase the signal-to-noise ratio, and the detecting system can enable the grating and central wavelength to be regulated at any time according the requirement of the test, thus facilitating the acquisition of the Raman spectrum of the different components.

The invention discloses a mirror field dispatching system and method for a tower type solar thermal power generation system. The system comprises a receiver, a heliostat, a light spot imaging device, a light spot collection device, an image processing device and a mirror field control system for switching or regulating the single mirror state of the heliostat to control the whole mirror field. The method comprises the following steps of: correcting the heliostat successfully installed in the mirror field; verifying the corrected heliostat, judging whether the heliostat is verified or not, and seeking the sun by the verified heliostat; repeatedly correcting an unverified heliostat, and taking the heliostat continuously unverified many times as a fault heliostat, wherein the heliostat during sun seeking is needed to be regularly verified so as to solve the problem that the accuracy is lowered due to long term running of the heliostat. Through scientifically and reasonably dispatching the heliostat, correction, verification as well as fault detection and diagnosis of the heliostat are finished on the premise of ensuring the sun seeking efficiency of the mirror field to the maximum, and safe and efficient operation of the mirror field is ensured.

The invention discloses a simple lens image restoration method combined with RAW image denoising, which firstly denoises a RAW image directly captured by a simple lens, then converts the RAW image into an RGB image, and then performs blind convolution image restoration on the RGB image to get a final clear restoration image. The method of the invention can effectively filter the noise of the sensor when acquiring the image data when correcting the image blur caused by lens aberration and dispersion, and can further improve the image restoration quality of the simple lens computational imaging.

The invention discloses a common-reference detection and machining method of an off-axis three-mirror aspheric optical system. The method includes: firstly, machining of a main reflecting mirror and a third reflecting mirror are respectively performed until the RMS value of the full-aperture interference detection surface shape of each single reflecting mirror is greater than 1 / 10[Lambda], wherein Lambda refers to the laser interferometer operating wavelength; secondly, according to design parameters, an integrated backboard used for fixing the main reflecting mirror and the third reflecting mirror is designed and machined; thirdly, the main reflecting mirror and the third reflecting mirror are fixedly arranged on the integrated backboard, common-reference detection of the main reflecting mirror and the third reflecting mirror is performed, and the surface shapes of the main reflecting mirror and the third reflecting mirror are respectively obtained; fourthly, based on the surface shapes of the main reflecting mirror and the third reflecting mirror, which are obtained by common-reference detection, ion beam machining of the main reflecting mirror and the third reflecting mirror fixed on the integrated backboard is performed according to the design requirement; and fifthly, common-reference detection of the main reflecting mirror and the third reflecting mirror after ion beam machining is performed until the design requirement is satisfied. According to the method, the complicated assembling and adjusting processes of the off-axis three-mirror aspheric optical system can be avoided.

Described herein is a system and method for extending the performance of a simple lens system with curvature of field to image a set of optical light guide sources extended over a wide field of view. Embodiments are applicable to systems using integrated optical light guides as the sources for imaging. Further, the systems and methods allow for a wide field of view using simple aspheric lenses with resulting savings in complexity, size, mass, and cost.

The invention discloses a f19 mm type vehicle-mounted far-infrared mechanical athermal lens. The lens comprises a housing, a front main cylinder, a rear main cylinder and a thermal compensation telescopic ring. The front main cylinder and the rear main cylinder are sequentially arranged along the light incident direction of a light path. One end of the thermal compensation telescopic ring is fixed to the housing, and the other end of the thermal compensation telescopic ring is connected with the front main cylinder. A front main cylinder positive lens is fixed in the front main cylinder. A rear main cylinder negative lens and a rear main cylinder positive lens are sequentially arranged in the rear main cylinder along the light incident direction. The air space between the rear main cylinder negative lens and the rear main cylinder positive lens is over five times the distance between the front main cylinder and the rear main cylinder. When the telescopic phenomenon of the thermal compensation telescopic ring occurs due to temperature change in the light path direction, the front main cylinder is driven to move by the thermal compensation telescopic ring. Therefore, the distance between the front main cylinder and the rear main cylinder is changed. According to the technical scheme of the invention, the temperature self-adaption of an infrared lens can be realized based on a simple lens structure.

An internal focus lens comprising sequentially from an object side a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. The second lens group is configured by a simple lens element and is moved along an optical axis to perform focusing. The internal focus lens satisfies condition expressions (1) 0.48<|f3| / f<0.73 and (2) 1.05<Fno×f1 / f<1.42, where f3 is the focal length of the third lens group, f is the focal length of the entire optical system, f1 is the focal length of the first lens group, and Fno is the F number of the entire optical system.

The present disclosure is directed to a device having an optical scanner, the optical scanner structured to include a mirror, a first actuator that rotates the mirror around a first axis of rotation, a first angular position sensor that senses an angular position of the mirror around the first axis of rotation, a second actuator that rotates the mirror around a second axis of rotation, a second angular position sensor that senses the angular position of the mirror around the second axis of rotation, and a controller coupled to the first and second drivers and structured to drive the respective first and second actuators to rotate the mirror into respective specific angles around the axes of rotation as sensed by the respective first and second angular position sensors.

The invention discloses an optical lens for a simple lens structure to improve the resolution. The optical lens is orderly provided with a first lens group with negative focal power and a second lens group with positive focal power along a direction from an object side to an image side. The first lens group comprises a lens 1 with negative focal power, a lens 2 with negative focal power, and a lens 3 with positive focal power. The second lens group comprises a lens 4 with negative focal power, a lens 5 with positive focal power, a lens 6 with positive focal power, a lens 7 with positive focal power, a lens 8 with positive focal power, and a lens 9 with negative focal power. The effective focal length of the optical lens and the effective focal length of the lens 1 satisfy a first setting relation, and the effective focal length of the optical lens and the effective focal length of the second lens group satisfy a second setting relation. In this way, since the structure is simple, the optical lens of the embodiment of the invention has a low cost.

Described herein is a system and method for extending the performance of a simple lens system with curvature of field to image a set of optical light guide sources extended over a wide field of view. Embodiments are applicable to systems using integrated optical light guides as the sources for imaging. Further, the systems and methods allow for a wide field of view using simple aspheric lenses with resulting savings in complexity, size, mass, and cost.

The invention discloses a basic structure consisting of five groups of six fisheye lenses for a digital projector, which comprises five lens groups consisting of six lenses with standard spherical surfaces. The five lens groups consist of four single lens groups and a double-glued lens group; an aperture diaphragm is arranged between the double-glued lens group and the single lens group in front of the double-glued lens group; the absolute values of the focal power of the lenses are in a ratio of 1:1.51:0.485:0.14:1.51 from front to back in turn; the sum of the focal power of the lenses in front of an aperture diaphragm A is a negative value; the sum of the focal power of the lenses behind the aperture diaphragm A is a positive value; and the ratio of the absolute value of the negative value to the absolute value of the positive value is 1:1.539. The basic structure is simple, lowers the production cost and assembling difficulty and enhances the stability of a lens structure. Moreover, the fisheye lens structure can zoom out the focal length in proportion to adjust full-field image height so as to adapt to different sizes of digital projectors with three liquid crystal displays (LCDs) or one digital mirror device (DMD).