12 results about "Negative glow" patented technology

A four-part optical lens with a large aperture, comprising a first lens (10) with a positive light focus, a second lens (20) with a negative light focus, a third lens (30) with a positive light focus, and a fourth lens (40) with a positive light focus, arranged sequentially, characterized in that the two surfaces of the first lens (10) are each an S1 surface (11) and an S2 surface (12), wherein the two surfaces of the second lens (20) are each an S3 surface (21) and an S4 surface (22), wherein the two surfaces of the third lens (30) are each an S5 surface (31) and an S6 surface (32), wherein the two surfaces of the fourth lens (40) are each an S7 surface (41) and an S8 surface (42), wherein the S1 surface (11), the S2 surface (12), the S3 surface (21), S4 surface (22), S5 surface (31), S6 surface (32), S7 surface (41) and S8 surface (42) are arranged one after the other,wherein the side of the S8 surface (42) facing away from the S7 surface (41) is provided with an S9 surface (50), wherein an aperture diaphragm (60) is arranged on one side of the S1 surface (11) or between the S2 surface (12) and the S3 surface (21), wherein the S7 surface (41) is provided with a vignetting diaphragm (70), wherein the S1 surface (11), the S2 surface (12), the S5 surface (31), the S6 surface (32) and the S7 surface (41) are convex surfaces, wherein the S4 surface (22) is a concave surface, , where the distance between the aperture stop (60) and the object focus of the lens |ST - F obj | is, where the equivalent focal length of the lens is f0, |ST - F obj | < 0.7f0, where the free aperture d of the S1 surface (11) to the S8 surface (42) satisfies the following relationship: d i > 0.9d j , i < j, where i is an integer from 1 to 7 and j is an integer from 2 to 8, wherein the radius of curvature of the S3 surface (21) is r3, wherein the radius of curvature of the S4 surface (22) is r4, |r4| < |r3|, wherein the radius of curvature of the S7 surface (41) is r7, wherein the radius of curvature of the S8 surface (42) is r8, |r7| < |r8|, wherein the equivalent focal length of the fourth lens (40) is greater than the equivalent focal length of the third lens (30), wherein the equivalent focal length of the fourth lens (40) is greater than the equivalent focal length of the first lens (10), where the center distance between the S6 surface (32) and the S7 surface (41) G 67 is, where the center distance between the S2 surface (12) and the S3 surface (21) G 23 is, G 67 < G 23 .

The utility model provides a three-piece type LCD projection lens, and relates to the technical field of projection lenses. Comprising a first group lens, a diaphragm, a second group lens, a film and an image surface which are arranged in sequence, the image surface is used for emitting light, the film is used for converging the light, the diaphragm is used for controlling the light inlet amount of the converged light, and the first group lens and the second group lens are both used for correcting aberration; the first group lens is provided with a first lens, and the first lens is a lens with positive focal power; the second group lens comprises a second lens and a third lens; the second lens is a lens with negative focal power, and the third lens is a lens with positive focal power; the first lens is arranged in front of the diaphragm, and the second lens and the third lens are arranged behind the diaphragm. According to the utility model, the problems of poor imaging and high cost of many LCD projection lenses in the prior art are solved.

The light and thin diopter lens comprises a negative-focal-power lens, film layers used for achieving the light splitting effect are arranged on the surfaces of the two sides of the negative-focal-power lens respectively, environment light enters from the environment side surface of the negative-focal-power lens, is reflected on the human eye side surface and then is reflected on the environment side surface again, and the light splitting effect is achieved. The light is emitted from the side surface of the human eye and finally enters the human eye for imaging; the two side surfaces of the negative focal power lens reflect the ambient light twice, so that part of the ambient light forms the turn-back light path in the negative focal power lens, and the diopter of the vision correction light path comprising the turn-back light path is matched with the vision of human eyes. According to the light and thin type diopter lens, the myopia correction function is achieved mainly through the reflecting surface of the negative-focal-power lens, the thickness of the lens can be greatly reduced, the wearing feeling and attractiveness are improved on the premise that vision correction is guaranteed, and the light and thin type diopter lens is particularly suitable for correction of high myopia of 600 degrees or above.

The utility model discloses a zooming lighting module and lighting device relates to lighting device technical field, and zooming lighting module includes light source and zooming component, and zooming component includes drive arrangement, has the first lens of negative optical power and has the second lens of positive optical power, and first lens and second lens all set up in the emergent light direction of light source, and second lens is coaxial with first lens and is set up between first lens and light source, and drive arrangement is used for driving second lens and translates between first lens and light source, to make the light column of light source converging or diverging, and this zooming lighting module lens group number is less, can reduce the refraction number of light in reducing the volume of lighting module, satisfy miniaturization and light weight demand, guarantee effective illumination intensity. Lighting device, including above-mentioned zooming lighting module, cost is low, and the volume is small, can be applicable to a variety of mobile / non - mobile scene need.

The utility model relates to the field of display screens, and provides a common-cathode and common-anode compatible circuit of a COB display screen and a pixel display module, the common-cathode and common-anode compatible circuit of the COB display screen comprises a common-cathode and common-anode compatible circuit and a novel pixel display module, the common-cathode and common-anode compatible circuit of the COB display screen comprises a main control module, a common-anode circuit and a common-cathode circuit, the pixel display module is uniformly arranged on the surface of the COB display screen, and the common-cathode and common-anode compatible circuit of the COB display screen comprises a common-cathode circuit the pixel display module is divided into a common-anode display module and a common-cathode display module, the common-anode display module is provided with a plurality of common-anode light-emitting tube groups, the common-cathode display module is provided with a plurality of common-cathode light-emitting tube groups, the common-anode light-emitting tube groups of the common-anode display module are controlled by a common-anode circuit to be turned on and off, and the common-cathode light-emitting tube groups of the common-cathode display module are controlled by a common-cathode circuit to be turned on and off. According to the common-cathode and common-anode compatible circuit of the COB display screen, the main control module transmits signals to the common-anode circuit and the common-cathode circuit, so that the COB display screen plays pictures, the pixel display module is controlled by two circuits, the energy consumption is lower, and the pixels are higher in definition.

The application discloses a large-aperture industrial vision detection lens applied to a vehicle lamp self-closing loop, which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from an object side to an image side along an optical axis direction; wherein the first lens, the third lens and the fourth lens each have a positive focal length; and the second lens and the fifth lens each have a negative focal length. Through the lens, the aperture size can be increased to enhance the light collection capability, the lens size can be optimized, and the temperature adaptability can be improved.

The application discloses a kind of lighting projection components and welcome lamp, above-mentioned lighting projection component, including lighting component, imaging component and shell;Imaging component sequentially includes along the image side to object side: the first lens with negative focal length;Second lens with positive focal length;Third lens with positive focal length;The fourth lens with negative focal length;Imaging component satisfies the following conditional formula: 0.150 < tanSemi-Fov × [f / (f2+f3)] <0.349.The lighting projection component provided by the application, the pattern range projected can reach long x wide: 340mm x 130mm to long x wide: 1900mm x 730mm, and the length is shorter, and the projected pattern is clear.

The invention provides an infinite far field microscope objective and a quantum wide field imaging device, and the first lens group comprises a plurality of lenses and has positive focal power; the second lens group comprises a first lens with positive focal power, a first balsaming lens with negative focal power, a second balsaming lens with negative focal power, a seventh lens with positive focal power and a diaphragm which are sequentially arranged from the object side to the image side; or the first lens with the positive focal power, the first bonding lens with the negative focal power, the second bonding lens with the positive focal power, the seventh lens with the negative focal power and the diaphragm are sequentially arranged from the object side to the image side. The red fluorescence wave band of the diamond NV color center can be well matched, and the dual requirements of the large numerical aperture and the working distance can be met.

The surface scattered light collecting system is divided into the wide-channel scattered light path and the narrow-channel scattered light path, the wide-channel scattered light negative-focal-power lens group is arranged on the wide-channel scattered light path to correct aberration, and the resolution ratio of a wide-channel scattered light focal plane is improved. Besides, a second reflecting mirror is movably arranged on a narrow channel light path reflected by the first reflecting mirror, and the second reflecting mirror reflects a focal plane of the narrow channel light to an imaging system, so that imaging observation of a target object is realized, debugging and mounting of an optical system are facilitated, and actual morphology of large-size particles or other flaws can be manually observed.

The embodiment of the invention provides a lens, a projection device, a vehicle lamp device and a vehicle, and belongs to the technical field of optics. The lens comprises a lens group and a diaphragm. Wherein the lens group comprises at least five lenses arranged from the image side to the object side, the number of the lenses with focal power in the lens group is at least five, and the number of the lenses with negative focal power in the lens group is at least one. The diaphragm comprises a first side and a second side which are oppositely arranged in the direction from the image side to the object side, at least one of the first side and the second side is provided with a lens, and when the lens is arranged on the first side, the lens which is located on the first side and closest to the diaphragm has negative focal power. And / or when the second side is provided with the lens, the lens which is located on the second side and closest to the diaphragm has negative focal power. By means of the arrangement, the lens can be matched with direct display chips such as the micro light-emitting diode display chip to form a small-size projection device, and therefore the size of the vehicle lamp device can be reduced.

The invention relates to a flexible photoresponse thin film material and a preparation method and application thereof, the thin film material comprises a substrate, an MXene / TiO2 functional layer and a conductive network, the MXene / TiO2 functional layer is arranged on the substrate, the conductive network is arranged on the MXene / TiO2 functional layer, and titanium dioxide in the MXene / TiO2 functional layer is obtained through in-situ oxidation of a titanium-containing MXene nanosheet. Compared with the prior art, light monitoring coverage of all wavebands from ultraviolet light to near-infrared light is achieved, controllable switching between positive light response and negative light response is achieved under different illumination wavelengths, and the flexible structure adapts to complex environments and surfaces.

This application discloses an optical-mechanical system and a near-eye display device, comprising: an illumination assembly including a light source and a turning prism; a display chip; a relay imaging assembly including a polarization beam splitter, a first corrective lens group, and a reflective element. The display chip and the reflective element are disposed on opposite sides of the polarization beam splitter, and the display chip and the turning prism are disposed on adjacent sides of the polarization beam splitter. The first corrective lens group is disposed between the polarization beam splitter and the display chip. The first corrective lens group includes a cemented fourth lens and a fifth lens. The fourth lens, having positive optical power, is disposed on the side proximal to the polarization beam splitter, and the fifth lens, having negative optical power, is disposed on the side proximal to the display chip. The reflective element has positive optical power, and the focal length f3 of the reflective element satisfies the following relationship with the focal length f of the optical-mechanical system: 0.6 < f / f3 < 1. This application aims to achieve a wide-angle, high-resolution full-color optical-mechanical system while maintaining a compact lens size.