Double-combination-lens lamp assembly and double-combination-lens flashlight
By using a dual-lens structure, combining concave and convex lenses and biconvex lenses, the problem of insufficient light utilization and range of traditional flashlights is solved, achieving a long-range and high-brightness effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional flashlights suffer from problems such as low light utilization or short illumination range.
It adopts a double-lens structure, including a coaxial concave-convex lens and a biconvex lens. The light source is located between the focal point of the concave-convex lens and the concave-convex lens. The light passes through the concave-convex lens to reduce the divergence angle and then enters the biconvex lens, further reducing the divergence angle and exiting as parallel light.
It enables the formation of clear light spot images at longer distances, improving both range and brightness.
Smart Images
Figure CN224065323U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lighting appliance technical field, concretely relates to a double combination lens lamp assembly and double combination lens flashlight. BACKGROUND
[0002] Traditional flashlight usually adopts single lens, and the light emitted by the light source is gathered through the single lens. However, such flashlight has the problem of small light utilization rate or small light intensity range. SUMMARY
[0003] In view of the above problems, the utility model is provided to overcome the above problems or at least partially solve the above problems.
[0004] In the first aspect, the utility model provides a double combination lens lamp assembly. The double combination lens lamp assembly comprises a light source and a lens group composed of a coaxial meniscus lens and a double convex lens; the light source is located between the focal point of the meniscus lens and the meniscus lens, and the meniscus lens is used to gather the light emitted by the light source in a manner of reducing the divergence angle and then incident on the double convex lens; the double convex lens is used to gather the incident light in a manner of parallel light.
[0005] In an embodiment, the incident surface of the meniscus lens is a concave surface, and the exit surface is a convex surface; the light emitted by the light source is incident on the meniscus lens through the incident surface of the meniscus lens, and then gathered in a manner of reducing the divergence angle, and then gathered in a manner of reducing the divergence angle after passing through the exit surface of the meniscus lens, and the light gathered by the meniscus lens can be projected on the incident surface of the double convex lens; the light emitted by the meniscus lens is incident on the double convex lens through the incident surface of the double convex lens, and then gathered in a manner of reducing the divergence angle, and then gathered in a manner of parallel light after passing through the exit surface of the double convex lens.
[0006] In an embodiment, the light source is an LED lamp bead.
[0007] In the second aspect, the utility model provides a double combination lens flashlight. The double combination lens flashlight comprises a lamp head assembly, a barrel, a tail cover and a battery; the lamp head assembly comprises a lamp holder, a front cover and a double combination lens lamp assembly as described in the first aspect; the light source and the meniscus lens are arranged in the lamp holder, the double convex lens is arranged at the opening of the front end of the lamp holder, and the position is locked by the front cover matched with the lamp holder.
[0008] In an embodiment, the periphery of the meniscus lens extends outward in the direction perpendicular to the optical axis to form a ring-shaped first fixing part, the first fixing part is provided with a through hole, and the meniscus lens is fixed in the lamp holder by passing through the through hole.
[0009] In one embodiment, the periphery of the lenticular lens extends outward in a direction perpendicular to the optical axis to form a ring-shaped second fixing portion, the front end of the lamp holder is formed with a ring-shaped recess accommodating the second fixing portion, and the front cover is formed with a stop ring abutting against the second fixing portion.
[0010] The light emitted by the light source of the double-combination-lens flashlight can form a clear light spot image at a long distance, so that the double-combination-lens flashlight can shoot far (slightly worse than when a single lens is used) and also ensure sufficient brightness. BRIEF DESCRIPTION OF DRAWINGS
[0011] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, constitute a part of the specification and illustrate the embodiments of the application and together with the text description, serve to explain the principles of the application. Obviously, the drawings in the following description only illustrate some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:
[0012] Figure 1 The double-combination-lens flashlight according to one embodiment of the present application is schematically shown;
[0013] Figure 2 The cross-sectional view of the lamp head assembly in Figure 1 is schematically shown;
[0014] Figure 3 The exploded view of the lamp head assembly in Figure 1 is schematically shown;
[0015] Figure 4 The concave-convex lens in Figure 2 is schematically shown;
[0016] Figure 5 The double lenticular lens in Figure 2 is schematically shown.
[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, constitute a part of the specification and illustrate the embodiments of the application and together with the text description, serve to explain the principles of the application. Obviously, the drawings in the following description only illustrate some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings: DETAILED DESCRIPTION
[0018] The embodiments of the present application are described below in detail, examples of which are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application, and those skilled in the art can make various changes, modifications, replacements and variations to the embodiments without departing from the principles and the purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
[0019] In the description of the present application, the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0020] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In addition, the terms "include", "contain" and any variations thereof are intended to cover non-exclusive inclusion.
[0021] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0022] A double combination lens flashlight according to an embodiment of the present application is described below with reference to the drawings.
[0023] Referring to Figures 1 to 3 A double combination lens flashlight according to an embodiment of the present application includes a lamp head assembly 1, a cylinder body 2, a tail cover 3, and a battery. The two ends of the cylinder body 2 are connected with the lamp head assembly 1 and the tail cover 3 respectively, and the battery is arranged in the cylinder body 2.
[0024] The lamp head assembly 1 comprises a lamp holder 4, a front cover 5, and a double combination lens lamp assembly. The double combination lens lamp assembly comprises a light source 6, and a lens group composed of a coaxial meniscus lens 7 and a double convex lens 8. The light source 6 is located between the focal point of the meniscus lens 7 and the meniscus lens 7, and the meniscus lens 7 is used to converge the light emitted by the light source 6 in a manner of reducing the divergence angle and then enter the double convex lens 8. The double convex lens 8 is used to emit the incident light in parallel light.
[0025] Specifically, the incident surface of the meniscus lens 7 is a concave curved surface, and the exit surface is a convex curved surface. As shown in the light path diagram in Figure 3 , the light emitted by the light source 6 enters the meniscus lens 7 through the incident surface of the meniscus lens 7, is converged in a manner of reducing the divergence angle, and then exits through the exit surface of the meniscus lens 7, is again converged in a manner of reducing the divergence angle, and the light converged by the meniscus lens 7 can be projected on the incident surface of the double convex lens 8. The light exiting the meniscus lens 7 enters the double convex lens 8 through the incident surface (convex curved surface) of the double convex lens 8, is converged in a manner of reducing the divergence angle, and then exits through the exit surface (convex curved surface) of the double convex lens 8 in parallel light. Thus, the light emitted by the light source 6 can form a clear light spot image at a long distance, and the double combination lens flashlight can both shoot far (high light intensity) and ensure sufficient brightness (high luminous flux).
[0026] In the embodiment, the light source 6 can be an LED lamp bead. The light source 6 and the meniscus lens 7 are arranged in the lamp holder 4, and the double convex lens 8 is arranged at the opening of the front end of the lamp holder 4 and is locked in position by the front cover 5 cooperating with the lamp holder 4.
[0027] Referring to Figure 2 and Figure 4 , in the embodiment, the periphery of the meniscus lens 7 extends outward in a direction perpendicular to the optical axis to form a ring-shaped first fixing part 9, the first fixing part 9 is provided with a through hole 10, and the meniscus lens 7 is fixed in the lamp holder 4 by passing through the through hole 10.
[0028] Referring to Figure 2 and Figure 5 , in the embodiment, the periphery of the double convex lens 8 extends outward in a direction perpendicular to the optical axis to form a ring-shaped second fixing part 11, the front end of the lamp holder 4 is formed with a ring-shaped recess accommodating the second fixing part 11, and the front cover 5 is formed with a stop ring 12 abutting against the second fixing part 11. The outer peripheral wall of the lamp holder 4 can be formed with external threads, and the inner peripheral wall of the front cover 5 can be formed with internal threads cooperating with the external threads, and rotating the front cover 5 can lock the double convex lens 8.
[0029] The dual-combination lens flashlight of the embodiment can form a clear light spot image at a long distance, and further can ensure sufficient brightness.
Claims
1. A dual combination lens light assembly characterized by: The lens assembly comprises a light source and a lens group composed of a coaxial meniscus lens and a double convex lens; the light source is located between the focal point of the meniscus lens and the meniscus lens, the meniscus lens is used to converge the light emitted by the light source in a manner of reducing the divergence angle and then the light is incident on the double convex lens; the double convex lens is used to emit the incident light in a manner of parallel light.
2. The dual combination lens lamp assembly of claim 1, wherein: The incident surface of the meniscus lens is a concave surface, and the exit surface is a convex surface; the light emitted by the light source is incident on the meniscus lens through the incident surface of the meniscus lens, is converged in a manner of reducing the divergence angle, is emitted through the exit surface of the meniscus lens, is again converged in a manner of reducing the divergence angle, and the light converged by the meniscus lens can be projected on the incident surface of the double convex lens; the light emitted from the meniscus lens is incident on the double convex lens through the incident surface of the double convex lens, is converged in a manner of reducing the divergence angle, is emitted through the exit surface of the double convex lens, and is emitted in a manner of parallel light.
3. The dual combination lens lamp assembly of claim 1 or 2, wherein: The light source is an LED lamp bead.
4. A dual combination lens flashlight, characterized by: The lamp head assembly comprises a lamp holder, a front cover, and the double combination lens lamp assembly according to any one of claims 1 to 3; the light source and the meniscus lens are arranged in the lamp holder, the double convex lens is arranged at the opening of the front end of the lamp holder, and the position of the double convex lens is locked by the front cover matched with the lamp holder.
5. The dual combination lens flashlight of claim 4, wherein: The periphery of the meniscus lens extends outward in a direction perpendicular to the optical axis to form a ring-shaped first fixing part, the first fixing part is provided with a through hole, and the meniscus lens is fixed in the lamp holder by passing through the through hole.
6. The dual combination lens flashlight of claim 4 or 5, wherein: The periphery of the double convex lens extends outward in a direction perpendicular to the optical axis to form a ring-shaped second fixing part, the front end of the lamp holder is formed with a ring-shaped recess accommodating the second fixing part, and the front cover is formed with a stop ring abutting against the second fixing part.