67results about How to "Reduce vignetting" patented technology

A surgical microscopy system is provided wherein an optical coherence tomography facility is integrated into a microscopy system. A beam of measuring light formed by collimating optics of an OCT system is deflected by a beam scanner, traverses imaging optics, and is reflected by a reflector such that the beam of measuring light traverses an objective lens of microscopy optics and is directed to an object region of the microscopy optics. A position of the beam of measuring light being incident on the reflector is substantially independent on a direction into which the beam of measuring light is deflected by the beam scanner. When traveling through the beam scanner, the beam of measuring light is comprised of a bundle of substantially parallel light rays.

A projection display includes at least one light source, at least one reflective image generator configured to represent frames in a two-dimensional distribution of subareas of same, a projection optics arrangement having a two-dimensional arrangement of optical projection elements and being configured to image an associated subarea of the at least one image generator onto an image plane in each case, so that images of the frames superimpose within the image plane to form an overall picture, and at least one beam splitter arranged within an optical path between the at least one reflective image generator and the two-dimensional arrangement of optical projection elements, on the one hand, and the optical path between the at least one light source and the at least one reflective image generator, on the other hand.

A solid state image sensor includes an array of pixels and a corresponding array of microlenses. The positions of the microlenses relative to their corresponding pixels may vary according to the distances of the pixels from a central optical axis of the image sensor to substantially eliminate vignetting of light collected by the microlenses.

The invention discloses an imaging optics lens group which sequentially comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power and a fifth lens from an object side to an image side, wherein the object side surface of the first lens is a convex surface; the objectside surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the image side surface of the fourth lens is a concave surface, and the object side surface and the image side surface of the fourth lens are both aspheric surfaces; and the image side surface of the fifth lens is a concave surface, and the object side surface and the image side surface of the fifth lens are both aspheric surfaces. The imaging optics lens group is additionally provided with an aperture and an electronic photosensing unit for imaging a shot object, wherein the aperture is arranged between the shot object and the second lens, and the electronic photosensing unit is arranged at an imaging surface. Through the arrangement way of the lens group in the invention, the volume of the lens group can be effectively reduced, the sensitiveness of an optics system can be lowered, and higher resolution can be obtained.

The invention discloses an optical lens group for shooting, which comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with the positive refractive power, a fourth lens with the negative refractive power and a fifth lens, and is also provided with an aperture and an electronic light sensitive element for imaging a shot object, wherein an object side surface of the first lens is a convex surface; an object side surface and an image side surface of the second lens are concave surfaces; an object side surface and an image side surface of the fourth lens are concave surfaces; at least one surface in the object side surface and the image side surface of the fourth lens is an aspheric surface; an object side surface of the fifth lens is a convex surface, and an image side surface of the fifth lens is a concave surface; at least one inflection point is arranged on the image side surface of the fifth lens; the fifth lens is made of a plastic material; and the aperture is arranged between the shot object and the third lens. Due to the configuration mode of the lens group, the volume of the lenses can be effectively reduced, the sensitivity of an optical system is reduced, and higher image resolution can be acquired.

The invention discloses a photographing optical lens. The optical lens comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with the positive refractive power and a fourth lens with the negative refractive power from an object side to an image side in turn and is provided with a diaphragm, wherein an object side surface of the first lens is a convex surface; an image side surface of the second lens is a concave surface; an image side surface of the fourth lens is a concave surface, and an object side surface and the image side surface of the fourth lens are aspheric surfaces; and the diaphragm is arranged between the first lens and the second lens. In the invention, four lenses with refractive power are arranged in the photographing optical lens.

The invention discloses an optical shot for image capture. The optical shot comprises five lenses with refractive power, which, from an object side to an image side, are sequentially a first lens with positive refractive power, a second lens with negative refractive power, a third lens, a fourth lens with positive refractive power and a fifth lens with negative refractive power, wherein the object side surface of the first lens is a convex surface; the object side surface of the second lens is a concave surface; the object side surface of the fourth lens is a convex surface, and at least one surface of the object side surface and the image side surface of the fourth lens is an aspheric surface; and the object side surface of the fifth lens is a concave surface, and at least one inflectionpoint is formed on the image side surface of the fifth lens. The optical shot for image capture is also provided with an aperture and an electric photosensitive element for imaging a photographed object; and the aperture is arranged between the photographed object and the second lens. Through the mode of configuring the lens group, the shot volume can be effectively reduced, the sensitivity of anoptical system can be reduced, and higher resolution power can be acquired.

The invention relates to a lens which comprises a lens barrel, a first lens unit and a second lens unit are arranged in the lens barrel, a driving part is arranged on the first lens unit, and during zooming or focusing, the driving part shrinks or expands under the action of temperature so as to drive the first lens unit to move in the direction of an optical axis; and the second lens unit comprises a liquid lens, the liquid lens is filled with a transparent solution, and the transparent solution is heated to expand during zooming or focusing or is cooled to contract during zooming or focusingso as to regulate and control the focal power of the liquid lens. According to the lens, the use of a motor rotor and an induction coil can be avoided, and the thickness of the lens module is effectively reduced. The invention also relates to an image capturing device and electronic equipment.

The invention provides an image capturing lens group, from an object side to an image side, which orderly comprises a first lens, a second lens, a third lens, a fourth lens and an aperture, wherein the first lens has positive refractive power, and an object side surface of the first lens is a convex surface; the second lens has negative refractive power; the third lens has the positive refractive power, and the object side surface of the third lens the concave surface while an image side surface thereof is the convex surface, and the object side surface and the image side surface of the third lens are both aspheric surfaces; the fourth lens has the negative refractive power, the image side surface of the fourth lens is the concave surface provided with at least one inflection point, and the object side surface and the image side surface of the fourth lens are both aspheric surfaces; and the aperture is located between a photographed object and the first lens. Only four of the lenses of the image capturing lens group have the refractive power. With the configuration mode of the lens group, volume of a camera lens can be reduced, sensitivity of an optical system is reduced, and higher resolving power can be obtained.

The invention provides a shooting optical system. From an object side to an image side, the system sequentially comprises: a first lens with a positive refraction power, wherein the object side surface is a convex side; a second lens with a negative refraction power, wherein the object side surface is the convex side, the image side surface is a concave side and at least one surface of the object side surface and the image side surface is aspheric; a third lens, wherein the object side surface and the image side surface are aspheric and at least one surface of the object side surface and the image side surface is provided with a point of inflection. The shooting optical system is provided with an aperture and an electronic photosensitive component which are used to help an object imaging. The aperture is arranged between the object and the first lens. And the shooting optical system is provided with three lenses with the refraction power.

The invention discloses an imaging optical lens group. From an objective side to an image side, the imaging optical lens group sequentially comprises a first lens with positive refraction force, a second lens with negative refraction force, a third lens with the positive refraction force, a fourth lens with the negative refraction force and a fifth lens, wherein the surface of the objective side of the first lens is a convex surface; the surface of the objective side of the second lens is the convex surface, and the surface of the image side of the second lens is a concave surface; the surface of the objective side of the third lens is the concave surface, and the surface of the image side of the third lens is the convex surface; the surface of the image side of the fourth lens is the concave surface, and the surfaces of the objective side and the image side of the fourth lens are aspheric surfaces; the surface of the image side of the fifth lens is the concave surface, and the surfaces of the objective side and the image side of the fifth lens are the aspheric surfaces; and the imaging optical lens group also comprises a diaphragm which is arranged between a shot object and the second lens. In a lens group configuration mode, the size of the lens group can be effectively reduced, the sensitivity of an optical system is reduced, and high resolution can be obtained.

The invention discloses an optical lens for shooting, which comprises a first lens with positive refractive power, a second lens with negative refractive power and a third lens from an object side to an image side in turn, wherein an object side surface of the first lens is a convex surface; an object side surface of the second lens is a concave surface, and an image side surface of the second lens is a concave surface; the object side surface and the image side surface of the second lens are aspheric surfaces; an image side surface of the third lens is a concave surface; an object side surface and the image side surface of the third lens are aspheric surfaces; and at least one inflection point is arranged on the image side surface of the third lens. Three lenses with refractive power arearranged in the optical lens for shooting. Due to the configuration mode of the lens, the total length of the lens can be effectively shortened, the sensitivity of an optical system is reduced, and high imaging quality is achieved.

The invention discloses an optical lens for photographing, which sequentially comprises a first lens, a second lens and a third lens from an objective side to an image side, wherein the first lens has a positive flexion force, and the surface of the objective side of the first lens is a convex surface; the second lens has a positive flexion force, and the surface of the image side of the second lens is a convex surface, the third lens has a positive flexion force, the surface of the objective side of the third lens is a convex surface and the surface of the image side of the third lens is a concave surface, and both the surface of the objective side and the surface of the image side of the third lens are non-spherical surfaces; and at least surface of the surface of the objective side andthe surface of the image side of the third lens is provided with at least one inflexion point; the optical lens for photographing is additionally provided with a diaphragm which is arranged between aphotographed object and the second lens; and in the optical lens for photographing, the three lenses with the flexion force are comprised. By adoption of the lens group allocation mode, the lens volume can be effectively reduced, the sensitivity of the optical system is reduced, and higher image resolution can be obtained.

The invention discloses an optical lens for photograph shooting. The optical lens comprises a first lens with positive inflectional force, a second lens with negative inflectional force, a third lens with positive inflectional force and a fourth lens with negative inflectional force which are arranged from the object side to the image side in sequence, wherein the object-side surface of the first lens is convex; the image-side surface of the second lens is concave; and the image-side surface of the fourth lens is concave, and the surfaces on the object-side surface and the image-side surface of the fourth lens are both aspheric. The optical lens for photograph shooting is further provided with an aperture and an electronic photosensitive element, wherein the aperture is arranged between the first lens and the second lens, and the electronic photosensitive element is arranged at the position of an imaging surface and used for enabling an object to be shot to form an image. The optical lens for photograph shooting is provided with four lenses with inflectional force. By means of the configuration mode of a lens group, the size of the lens can be effectively reduced, sensitiveness of an optical system is reduced, and large resolution power can be obtained.

The invention discloses a wide-view-field multi-scale high-resolution microimaging system, and the system comprises a light source, a sample, a microimaging object lens, a collection system, and a work station. The microimaging object lens is used for carrying out the imaging after a light beam emitted by the light source irradiates the sample, and obtaining a wide-view-field curved image plane. The collection system comprises a collection array for collecting the curved image plane according to the view field, and a camera array for secondary imaging. The work station is used for carrying out the analysis of an imaging overlapping view field obtained through collection and obtaining a final multi-scale wide-view-field high-resolution image through view field splicing. The invention also discloses a wide-view-field multi-scale high-resolution microimaging method. Through the design of the object lens and the improvement of an imaging method, the system achieves the multi-scale high-resolution observation of cells, tissues and organs while guaranteeing the wide view field.

The invention discloses a thinned imaging lens group. From an object side to an image side, the lens group sequentially comprises a first lens with positive refractive power and a second lens with negative refractive power, wherein the object side surface of the first lens is a convex surface, the image side surface of the first lens is a convex surface, and at least one surface of the object side surface and the image side surface of the first lens is an aspheric surface; and the object side surface of the second lens is a concave surface, the image side surface of the second lens is a concave surface, and at least one surface of the object side surface and the image side surface of the second lens is an aspheric surface. The thinned imaging lens group is also provided with an aperture and an electric photosensitive device for imaging a photographed object; the aperture is arranged between the photographed object and the second lens; the electric photosensitive device is arranged on an imaging surface; and two lenses with refractive power are arranged in the thinned imaging lens group.

The invention provides a photographic lens system, which, from an object side to an image side, sequentially comprises a first lens with positive refractive forces, a second lens with negative refractive forces, a third lens and a diaphragm, wherein at least one of an object-side surface and an image-side surface of the third lens is provided with at least an inflection point; the diaphragm is arranged between a photographed object and the first lens; the number of the lenses with refractive forces in the photographic lens system is only three; and the focal distance f of the whole photographic lens system, the focal distance f1 of the first lens, the focal distance f2 of the second lens, the curvature radius R1 of the object-side surface of the first lens, the dispersion coefficient V1 of the first lens, and the dispersion coefficient V2 of the second lens satisfy the following formulas: f/f1 is greater than 1.28 and less than 2.0, (R1/f)*100 is greater than 23.0 and less than 33.0, (V1-V2) is greater than 30.5 and less than 46.0, and f/f2 is greater than -0.65 and less than -0.25. Through the configuration mode of the lenses above, the optical aberration can be revised effectively, the imaging quality of the system can be improved, meanwhile, the total optical length of the system is shortened, and the characteristic of lens miniaturization is maintained.