3 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 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 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.