Outdoor projection lamp lens
By adopting an optical system composed of three lens groups in the outdoor projection lamp, the problems of uneven brightness distribution and small projection angle in the traditional projection lamp lens design are solved, and a more uniform brightness distribution and a larger projection angle are achieved, which improves the quality and adaptability of the projected picture.
Patent Information
- Application Number
- CN202420896169.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The traditional outdoor projection lamp lens design lacks optical technology optimization, resulting in uneven brightness distribution of the projected image, too high the center brightness and low edge brightness, and small projection angle, which cannot adapt to different outdoor environments and needs.
An optical system consisting of three lens groups, a total of thirteen lenses, including a zoom lens group, a magnifying glass group and a fixed lens group. Through scientific optical design and reasonable lens combination, the propagation path and distribution of light are adjusted to optimize the refractive and reflection of light.
The brightness of the projected image from the center to the edge is achieved, which improves the visual experience, and optimizes the refraction and reflection of light, reduces brightness differences, and provides high-quality projection effects.
Smart Images
Figure CN222689969U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of optical lenses, in particular to an outdoor projection lamp lens. Background Art
[0002] A projection lamp is a device used to project a pattern onto a screen or other background for display. It is widely used in people's daily life or work. However, with the development of society, people have higher and higher requirements for projection lamps. The traditional projection lamp lens is relatively simple in design and lacks sufficient optical technology design to optimize the propagation and distribution of light. This leads to uneven brightness distribution of the projected image, with too high brightness in the center and low brightness at the edge, affecting the overall visual effect. In addition, traditional outdoor projection lamps lack scientific optical design, often have a small projection angle, and cannot adapt to different outdoor environments and needs. Therefore, in order to improve the clarity and uniformity of the outdoor projection lamp image and solve the problem of small projection angle, it is necessary to improve the lens of the outdoor projection lamp to improve the various performances of the outdoor projection lamp. Utility Model Content
[0003] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an outdoor projection lamp lens, which is composed of three lens groups with a total of thirteen lenses. Among them, the three lens groups are composed of a zoom lens group, a magnifying lens group and a fixed lens group. The zoom lens group, the magnifying lens group and the fixed lens group are placed on the same axis, starting from the light source end, and are the zoom lens group, the magnifying lens group and the fixed lens group in sequence; it is characterized in that: the zoom lens group includes a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, and a seventh lens with positive focal power; the magnifying lens group includes an eighth lens with positive focal power, a ninth lens with negative focal power and a tenth lens with negative focal power; the fixed lens group includes an eleventh lens with negative focal power, a twelfth lens with positive focal power and a thirteenth lens with positive focal power. Among them, the first lens is a concave-convex lens, the second lens is a biconvex lens, the third lens is a concave-convex lens, the fourth lens is a concave-convex lens, the fifth lens is a concave-convex lens, the sixth lens is a plano-convex lens, the seventh lens is a concave-convex lens, the eighth lens is a concave-convex lens, the ninth lens is a biconcave lens, the tenth lens is a concave-convex lens, the eleventh lens is a biconcave lens, the twelfth lens is a biconvex lens, and the thirteenth lens is a biconvex lens.
[0004] Preferably, the light output aperture is 136 mm.
[0005] Preferably, the total optical length is 289 mm.
[0006] Preferably, F / #=1.04.
[0007] Preferably, the projection angle is 10°-50°.
[0008] Preferably, all lens surfaces are provided with a broadband anti-reflection coating.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] The utility model adopts an optical system composed of three lens groups and a total of thirteen lenses. Through scientific optical design and reasonable lens matching, it can effectively adjust the propagation path and distribution of light, making the brightness of the projection image more uniform from the center to the edge, and improving the visual experience. At the same time, the utility model can also optimize the refraction and reflection of light, reduce brightness differences, and thus provide high-quality projection effects.
[0011] Due to the improvement of brightness uniformity, every detail in the projected image can be displayed clearly and accurately, whether it is text, pattern or color, it can be presented in a more delicate and realistic way. This can not only meet the audience's demand for high-quality images, but also play a better role in commercial presentations, advertising promotions and other occasions. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 Schematic diagram of the structure of the outdoor projection lamp mirror group;
[0013] Figure 2 Vertical axis aberration diagram of outdoor projector lens group;
[0014] Figure 3 Axial spherical aberration diagram of outdoor projection lamp lens assembly;
[0015] Figure 4 Field curvature distortion diagram of outdoor projection lamp lens group;
[0016] Description of the numbers in the figure: module light source 1, first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7, eighth lens L8, ninth lens L9, tenth lens L10, eleventh lens L11, twelfth lens L12, thirteenth lens L13. DETAILED DESCRIPTION
[0017] The technical solution in one embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0018] See also Figure 1-4: An outdoor projection lamp lens, consisting of three lens groups with a total of thirteen lenses, the lens groups are placed on the same axis, starting from the module light source 1 end, and are, in sequence, a first lens L1 with positive focal power, a second lens L2 with positive focal power, a third lens L3 with negative focal power, a fourth lens L4 with positive focal power, a fifth lens L5 with negative focal power, a sixth lens L6 with positive focal power, and a seventh lens L7 with positive focal power, an eighth lens L8 with positive focal power, a ninth lens L9 with negative focal power, a tenth lens L10 with negative focal power, an eleventh lens L11 with negative focal power, a twelfth lens L12 with positive focal power, and a thirteenth lens L13 with positive focal power.
[0019] The utility model adopts an optical system composed of three lens groups and a total of thirteen lenses. Through scientific optical design and reasonable lens matching, it can effectively adjust the propagation path and distribution of light, making the brightness of the projection screen more uniform. Through precise optical calculation and simulation, the lens group can optimize the refraction and reflection of light, reduce brightness differences, and thus provide high-quality projection effects.
[0020] In this embodiment, as a preferred embodiment, the light output aperture is 136 mm. A larger light output aperture is conducive to improving the brightness and uniformity of the projected image. Through precise optical design, 136 mm is a reasonable light output aperture, which can ensure uniform distribution of light in the projection area, avoid bright and dark areas, and improve the visual quality of the image.
[0021] In this embodiment, as a preferred embodiment, the total optical length is 289 mm. A moderate total optical length (289 mm) helps to realize a compact and efficient optical system, which can reduce the loss and scattering of light during propagation and improve the efficiency of light energy utilization. At the same time, the compact optical layout also facilitates the installation and debugging of the projection lamp and meets the needs of various outdoor environments.
[0022] In this embodiment, as a preferred embodiment, F / #=1.04 is set to adapt the light emitting characteristics of the module light source, so as to achieve the best light output and project a bright and clear pattern.
[0023] In this embodiment, as a preference, the projection angle is 10°-50°. The 5x zoom angle can enhance its adaptability and practicality. By accurately adjusting the projection angle and zoom ratio, the clarity and brightness of the projected image can be ensured to be optimal, and it can adapt to a variety of projection needs. Users do not need to purchase multiple projection devices of different specifications, thereby reducing equipment costs.
[0024] In this embodiment, as a preference, all lens surfaces are provided with a broadband anti-reflection coating through a coating technology of a broadband anti-reflection coating to improve the light transmittance and reflection performance of the lens, making the projected image clearer and brighter, and the brightness distribution more uniform.
[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An outdoor projection lamp lens, which is composed of a focusing lens group, a magnifying lens group, and a fixed lens group placed on the same axis, starting from the light source end, which are the focusing lens group, the magnifying lens group, and the fixed lens group in order; characterized in that: The zoom lens group includes a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with negative focal power, a sixth lens with positive focal power, and a seventh lens with positive focal power; the magnifying lens group includes an eighth lens with positive focal power, a ninth lens with negative focal power, and a tenth lens with negative focal power; the fixed lens group includes an eleventh lens with negative focal power, a twelfth lens with positive focal power, and a thirteenth lens with positive focal power.
2. The outdoor projection lamp lens according to claim 1, characterized in that: The first lens is a concave-convex lens, the second lens is a biconvex lens, the third lens is a concave-convex lens, the fourth lens is a concave-convex lens, the fifth lens is a concave-convex lens, the sixth lens is a plano-convex lens, the seventh lens is a concave-convex lens, the eighth lens is a concave-convex lens, the ninth lens is a biconcave lens, the tenth lens is a concave-convex lens, the eleventh lens is a biconcave lens, the twelfth lens is a biconvex lens, and the thirteenth lens is a biconvex lens.
3. The outdoor projection lamp lens according to claim 1, characterized in that: The light output diameter is 136mm.
4. The outdoor projection lamp lens according to claim 1, characterized in that: The total optical length is 289mm.
5. The outdoor projection lamp lens according to claim 1, characterized in that: F / #＝1.04。 6. The outdoor projection lamp lens according to claim 1, characterized in that: The projection angle is 10°-50°.
7. The outdoor projection lamp lens according to claim 1, characterized in that: All lens surfaces are coated with broadband anti-reflection coating.