All-in-one condensing lens group capable of adjusting light spots

Abstract

The utility model discloses an all-in-one condensing lens group capable of adjusting light spots, which comprises a middle angle lens, and a plurality of large, medium and small angle lenses are arranged around and attached to the periphery of the middle angle lens. According to the utility model, a surrounding mode is adopted, a plurality of large, medium and small angle lenses surround the periphery of the middle angle lens, the lenses are adjacent to one another, so that light spots are more concentrated, each lens corresponds to one LED lamp bead, and the size of the light spots is adjustable by adjusting the corresponding LED lamp beads, so that the light condensing effect is enhanced; meanwhile, through different combination modes, adjustment of various light spot gears can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shadowless lamps, in particular to an all-in-one condensing lens group with adjustable light spots. Background Art

[0002] Shadowless lamps are used to illuminate the surgical area. Traditional surgical lamps generally use ring-shaped energy-saving lamps or halogen lamps as light sources. With the continuous development of light-emitting diode (LED) technology, especially the development of high-brightness white light LEDs, LED shadowless lamps have greatly improved the problems of ring-shaped energy-saving lamps or halogen lamps, such as high temperature in the surgical field, uneven illumination, poor light quality, color difference, and short life.

[0003] LED shadowless lamps are composed of multiple light source panels arranged in a single focusing lens. Most of the adjustments to focusing and astigmatism rely on up and down mechanical adjustments to change the direction of the light source panel, thereby adjusting the size of the light spot. They have poor focusing performance, high mechanical adjustment failure rate, and short service life. Utility Model Content

[0004] In order to solve the problem in the prior art that mechanical adjustment of the light spot leads to unsatisfactory focusing effect, the utility model proposes an all-in-one focusing lens group with adjustable light spot.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-in-one focusing lens group with adjustable light spots comprises a middle-angle lens, and a plurality of large, medium and small-angle lenses are arranged around the periphery of the middle-angle lens.

[0007] As a further improvement of the above technical solution:

[0008] Preferably, a positioning frame is provided around the periphery of several of the large, medium and small angle lenses.

[0009] Preferably, the intermediate angle lens and the large, medium and small angle lenses, and the two adjacent large, medium and small angle lenses are all formed by conjoined injection molding.

[0010] Preferably, it further comprises a light source board fixing column, which is arranged behind the condensing lens group and is used to fix the light source board.

[0011] Preferably, L-shaped connecting pieces are provided around the peripheries of the large, medium and small angle lenses for fixation.

[0012] Preferably, the intermediate-angle lens is hexagonal, and the number of the large, medium and small-angle lenses is six.

[0013] Preferably, the six large, medium and small angle lenses are composed of two small angle lenses, two medium angle lenses and two large angle lenses, all of which are symmetrically arranged, and the medium angle lens is a small angle lens.

[0014] Preferably, any one of the large, medium and small angle lenses is aligned with one of the corners of the middle angle lens.

[0015] Compared with the existing technology, the beneficial effects of the utility model are:

[0016] The utility model adopts a surround approach, consisting of a middle angle lens surrounded by a number of lenses of three different angles, large, medium and small. Each lens is adjacent to each other, so that the light spot is more concentrated. Each lens corresponds to an LED lamp bead, and the light spot size can be adjusted by adjusting the corresponding LED lamp bead, so that the focusing effect is enhanced. At the same time, through different combinations, the adjustment of various light spot gears can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the front side of the utility model;

[0018] Figure 2 It is a schematic diagram of the inverted three-dimensional structure of the utility model.

[0019] In the figure: 1. Middle angle lens; 2. Large, medium and small angle lenses; 3. Positioning frame; 4. Light source board fixing column; 5. L-shaped connecting piece. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1As shown, it can be known from the figure that the whole is hexagonal, specifically including a positioning frame 3 on the outside, a middle-angle lens 1 in the middle, and 6 large, medium and small angle lenses 2 are arranged between the middle-angle lens 1 and the positioning frame 3. At the same time, it can be known that the outer sides of the large, medium and small angle lenses 2 are consistent with the shape of the positioning frame 3, and are bonded together. The inner sides of the large, medium and small angle lenses 2 are aligned with the corners of the middle-angle lens 1, and are consistent with the corner shape of the middle-angle lens 1, and are bonded together. At the same time, two adjacent large, medium and small angle lenses 2 are also bonded together.

[0023] The six large, medium and small angle lenses 2 are composed of two small angle lenses, two medium angle lenses and two large angle lenses. The lenses are symmetrically arranged in pairs. At the same time, the middle angle lens 1 is a small angle lens. The seven angle lenses are combined together and fit each other, so that the light spot is more concentrated and the focusing effect is enhanced.

[0024] As attached Figure 2 As shown, the middle angle lens 1, large, medium and small angle lenses 2, positioning frame 3, light source board fixing column 4 and L-shaped connecting piece 5 are integrally injection molded to ensure the accuracy of the angle.

[0025] In order to install the focusing lens group on the shadowless lamp, an L-shaped connecting piece 5 is arranged around the lens group for installation.

[0026] The light source board fixing column 4 is used to connect the light source board, and the LED lamp beads on the light source board correspond to each intermediate angle lens 1 and large, medium and small angle lenses 2.

[0027] Working principle and process of this utility model:

[0028] A small-angle lens focuses light to form a small light spot, a medium-angle lens focuses light to form a medium light spot, and a large-angle lens focuses light to form a large light spot. The large, medium and small here are only relative, so for light spots between large and medium, light spots between small and medium are also within the range.

[0029] When all the lamp beads behind the angle lens light up, small, medium and large light spots are superimposed together to form a circular controllable light spot at a position of 1 meter.

[0030] The principle of light spot size control: By controlling the brightness of the lamp beads behind the lens at different angles and the ratio of the brightness of the lamp beads, the light spot size can be adjusted in multiple levels.

[0031] When the lamp beads behind the small-angle lens are the brightest, and the lamp beads behind the medium-angle and large-angle lenses are off or relatively dark, small spot lighting can be achieved;

[0032] When the lamp beads behind the small-angle and medium-angle lenses are lit and the lamp beads behind the large-angle lenses are off or relatively dim, medium-spot lighting can be achieved.

[0033] By analogy, by adjusting the brightness of the lamp beads behind the lens at different angles and the ratio of the brightness of the lamp beads, the light spot can be adjusted in 5 levels.

[0034] Therefore, there is no need to use mechanical up and down adjustment to achieve the required spot size and focusing effect as in the prior art. The adjustment method is more convenient, and the spot adjustment covers a wider range, the focusing effect is better, the failure rate is extremely low, and the structure is compact.

[0035] Meanwhile, in the above technical solution, the intermediate angle lens 1 does not necessarily need to be a small angle lens, and a large angle or medium angle lens may be used.

[0036] Furthermore, the number of the large, medium and small angle lenses 2 surrounding the outside cannot be limited to 6. There may be 8, 9 or 10 different large, medium and small angle lenses 2. When more angle lenses are used, more adjustment levels are required.

[0037] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An all-in-one focusing lens assembly with adjustable light spot, characterized in that: It comprises a middle-angle lens (1), and a plurality of large, medium and small-angle lenses (2) are arranged around the periphery of the middle-angle lens (1).

2. The all-in-one focusing lens assembly with adjustable light spot according to claim 1, characterized in that: A positioning frame (3) is arranged on the periphery of a plurality of the large, medium and small angle lenses (2).

3. The all-in-one focusing lens assembly with adjustable light spot according to claim 1, characterized in that: The intermediate angle lens (1) and the large, medium and small angle lenses (2), and the two adjacent large, medium and small angle lenses (2) are all formed by conjoined injection molding.

4. The all-in-one focusing lens assembly with adjustable light spot according to claim 1, characterized in that: It also comprises a light source board fixing column (4), which is arranged behind the condenser lens group and is used to fix the light source board.

5. The all-in-one focusing lens assembly with adjustable light spot according to claim 1, characterized in that: An L-shaped connecting piece (5) is provided on the periphery of the large, medium and small angle lenses (2) for fixing.

6. The all-in-one focusing lens assembly with adjustable light spot according to claim 1, characterized in that: The intermediate angle lens (1) is hexagonal, and the number of the large, medium and small angle lenses (2) is six.

7. The all-in-one focusing lens assembly with adjustable light spot according to claim 6, characterized in that: The six large, medium and small angle lenses (2) are composed of two small angle lenses, two medium angle lenses and two large angle lenses, and are all symmetrically arranged. The medium angle lens (1) is a small angle lens.

8. The all-in-one focusing lens assembly with adjustable light spot according to claim 6, characterized in that: Any of the large, medium and small angle lenses (2) is aligned with one of the corners of the medium angle lens (1).

Images