Symmetrical optical shadowless lamp

Abstract

The present invention discloses a symmetrical optical shadowless lamp, comprising a fixed bracket and multiple lens modules arranged on the fixed bracket; the fixed bracket is provided with multiple mounting holes; each lens module comprises two lens groups arranged symmetrically in mirror image, and the light spots of the two symmetrically arranged lens groups overlap; the lens group comprises a lens housing, a light source, a condenser, and a shaping mirror; the top of the lens housing is fixedly arranged in the mounting hole; the shaping mirror is arranged at the top opening of the lens housing; the light source and the condenser are both arranged in the lens housing, and the condenser is located between the light source and the shaping mirror; the light source comprises a circuit board and two groups of light-emitting chips emitting different color temperatures, the light-emitting chips being arranged on the circuit board; in the same lens module, the light spots of the two lens groups are arranged in opposite directions. The present invention solves the problem of light color misalignment by overlapping the light spots of the two lens groups in reverse, which is conducive to obtaining a more uniform light color.

Description

Technical Field

[0001] The invention relates to a shadowless lamp, in particular to a symmetrical optical shadowless lamp. Background Art

[0002] Shadowless surgical lights are essential equipment for illuminating surgical areas, ensuring optimal visualization of objects of varying depths, sizes, and low contrast within incisions and body cavities. Therefore, in addition to shadowlessness, they also require uniform illumination and high light quality, enabling accurate color differentiation between blood and other tissues and organs.

[0003] Traditional surgical shadowless lamps are generally reflective and have unadjustable color temperature. Consequently, all surgeries must use the same color temperature, making it difficult to meet the needs of diverse scenarios. To address this issue, existing technologies have proposed LED shadowless lamps with adjustable color temperature. These LED shadowless lamps utilize two different light sources that illuminate the same area simultaneously, allowing the desired color temperature to be achieved.

[0004] The existing adjustable color temperature LED shadowless lamp has the following shortcomings:

[0005] Due to the positional relationship between the two color temperature light sources, the actual light spot will have partial overlap and partial misalignment of light colors. That is, the light color in the middle of the light spot is relatively uniform, while the light colors at both ends are relatively scattered and tend to the single light color of the light source. The uniformity of the light color needs to be improved. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned problems and provide a symmetrical optical shadowless lamp. The symmetrical optical shadowless lamp can solve the problem of light color misalignment by overlapping the light spots of two groups of lenses in reverse, which is conducive to obtaining a more uniform light color.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A symmetrical optical shadowless lamp comprises a fixed bracket and a plurality of lens modules arranged on the fixed bracket;

[0009] The fixing bracket is provided with a plurality of mounting holes;

[0010] Each lens module includes two lens groups symmetrically arranged in a mirror surface, and the light spots of the two symmetrically arranged lens groups overlap each other; the lens group includes a lens housing, a light source, a condenser and a shaping mirror, and the top of the lens housing is fixedly set in the mounting hole; the shaping mirror is set at the top opening of the lens housing; the light source and the condenser are both arranged in the lens housing, and the condenser is located between the light source and the shaping mirror; the light source includes a circuit board and two groups of light-emitting chips emitting different color temperatures, and the light-emitting chips are arranged on the circuit board; in the same lens module, the light colors of the light spots of the two lens groups are arranged in opposite directions.

[0011] The working principle of the above-mentioned symmetrical optical shadowless lamp is:

[0012] During operation, after power is applied, the light-emitting chip emits light of the corresponding color temperature. This light is first focused by a condenser lens and then passes through a shaping mirror to produce a standard light spot. Each lens module consists of two symmetrically arranged lens groups with overlapping light spots. Furthermore, the color temperatures of the two light spots within the same lens module are arranged in opposite directions. For example, within the same viewing angle, one light spot may be whitish on the left, yellowish on the right, and uniform in the middle. The other light spot may be yellowish on the left, whitish on the right, and uniform in the middle. In other words, the two light spots within the same lens module overlap head to tail (at the ends of the light spots, the two different color temperatures overlap again). This creates a complementary effect, resulting in a more uniform light color.

[0013] In a preferred embodiment of the present invention, the two groups of light-emitting chips are integrated package structures or independent package structures.

[0014] In a preferred embodiment of the present invention, the color temperatures of the two groups of light-emitting chips are 3000K and 5700K respectively.

[0015] In a preferred embodiment of the present invention, the lens housing is fixedly connected to the inner side surface of the fixing bracket via a screw connection structure.

[0016] In a preferred embodiment of the present invention, a positioning groove is provided on the inner wall of the mounting hole; the top of the lens housing is matched in the positioning groove;

[0017] The positioning grooves corresponding to the two lens shells of the same lens module are arranged in mirror symmetry. By setting the positioning grooves, the lens shells can be positioned so that the position of the light spot is more accurate.

[0018] In a preferred embodiment of the present invention, an inner wall of the top opening of the lens housing is provided with a mounting support surface, and the molding mirror is arranged on the mounting support surface.

[0019] Furthermore, a position limiting bayonet is provided on the top of the lens housing, and a position limiting portion that cooperates with the position limiting bayonet is provided on the side of the shaping mirror. Through the above structure, the shaping mirror can be fixed in position to prevent it from rotating.

[0020] Furthermore, the upper bottom surface of the positioning groove covers and is limited above the opening of the limiting bayonet, so that the molded mirror can be limited and fixed by using the existing structure, and the structure is very compact and ingenious.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The symmetrical optical shadowless lamp of the present invention is provided with multiple lens modules, each lens module includes two lens groups that are symmetrically arranged in a mirror-like manner and have overlapping light spots. Moreover, the light colors of the light spots of the two lens groups in the same lens module are arranged in opposite directions, that is, the head and tail of the two light spots in the same lens module overlap (at the ends of the light spots, the two color temperatures overlap again). This just plays a complementary role, and the structure is very ingenious, thereby obtaining a more uniform light color. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the symmetrical optical shadowless lamp of the present invention. The same code in the figure represents the same set of lens modules.

[0024] Figure 2-3 These are cross-sectional views of the symmetrical optical shadowless lamp of the present invention in two different directions.

[0025] Figure 4 for Figure 2 Exploded section view in the direction of .

[0026] Figure 5 for Figure 2 Magnified view of the X in .

[0027] Figure 6 for Figure 4 Enlarged view of Y in .

[0028] Figure 7 This is a schematic diagram of two light spots of the same lens module of the symmetrical optical shadowless lamp of the present invention when separated at the same viewing angle. In the figure, the light spots at positions a and b are misaligned and have uneven light colors. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0030] See also Figure 1-4The symmetrical optical shadowless lamp of this embodiment includes a fixed bracket 1 and multiple lens modules mounted on the fixed bracket 1. The fixed bracket 1 is provided with multiple mounting holes 1-1. Each lens module includes two mirror-symmetrically arranged lens groups, with the light spots of the two symmetrically arranged lens groups overlapping. The lens groups include a lens housing 2, a light source, a condenser 3, and a shaping mirror 4. The top of the lens housing 2 is fixedly mounted in the mounting holes 1-1 of the fixed bracket 1. The shaping mirror 4 is positioned at the top opening of the lens housing 2. The light source and condenser 3 are both positioned within the lens housing 2, with the condenser 3 positioned between the light source and the shaping mirror 4. The light source includes a circuit board 5 and two groups of light-emitting chips 6 emitting different color temperatures. The light-emitting chips 6 are mounted on the circuit board 5. The two groups of light-emitting chips 6 are integrated and packaged (or may be independently packaged). Specifically, the color temperatures of the two groups of light-emitting chips 6 are 3000K and 5700K, respectively. Within the same lens module, the light spots of the two lens groups are arranged in opposite directions.

[0031] See also Figure 2-4 The lens housing 2 is fixedly connected to the inner side of the fixing bracket 1 through a screw connection structure.

[0032] See also Figure 6 The inner wall of the mounting hole 1-1 is provided with a positioning groove 1-2; the top of the lens housing 2 fits into the positioning groove 1-2; the positioning grooves 1-2 corresponding to the two lens housings 2 of the same lens module are arranged symmetrically. By providing the positioning grooves 1-2, the lens housing 2 can be positioned, making the position of the light spot more precise.

[0033] See also Figure 6 The inner wall of the top opening of the lens housing 2 is provided with a mounting support surface 2-1, and the molding mirror 4 is arranged on the mounting support surface 2-1.

[0034] Furthermore, the top of the lens housing 2 is provided with a retaining clip 2-2; the side of the shaping mirror 4 is provided with a retaining portion 4-1 that cooperates with the retaining clip 2-2. This structure allows the shaping mirror 4 to be fixed in position and prevented from rotating. Furthermore, the upper bottom surface of the positioning groove 1-2 overlaps and is retained above the opening of the retaining clip 2-2. This allows the shaping mirror 4 to be fixed in position using an existing structure, resulting in a very compact and ingenious structure.

[0035] See also Figure 1-7 The working principle of the symmetrical optical shadowless lamp of this embodiment is:

[0036] During operation, after power is applied, the light emitting chip 6 emits light of corresponding color temperature, which is first focused by the condenser 3 and then passes through the shaping mirror 4 to obtain a standard light spot. In particular, since each lens module includes two lens groups with mirror-symmetrical settings and overlapping light spots, and the color temperature arrangement directions of the two light spots in the same lens module are opposite, for example, in the same viewing angle, one light spot is white at the left end, yellow at the right end, and uniform in the middle; the other light spot is yellow at the left end, white at the right end, and uniform in the middle. Figure 7 That is, the two light spots in the same lens module overlap at their ends (at the ends of the light spots, the two different color temperatures overlap again), which just complements each other. The structure is very clever, thus obtaining a more uniform light color.

[0037] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A symmetrical optical shadowless lamp, characterized in that: It includes a fixed bracket and a plurality of lens modules arranged on the fixed bracket; The fixing bracket is provided with a plurality of mounting holes; Each lens module includes two lens groups symmetrically arranged in a mirror surface, and the light spots of the two symmetrically arranged lens groups overlap each other; the lens group includes a lens housing, a light source, a condenser and a shaping mirror, and the top of the lens housing is fixedly set in the mounting hole; the shaping mirror is set at the top opening of the lens housing; the light source and the condenser are both arranged in the lens housing, and the condenser is located between the light source and the shaping mirror; the light source includes a circuit board and two groups of light-emitting chips emitting different color temperatures, and the light-emitting chips are arranged on the circuit board; in the same lens module, the light colors of the light spots of the two lens groups are arranged in opposite directions.

2. The symmetrical optical shadowless lamp according to claim 1, characterized in that: The two groups of light-emitting chips are integrated package structures or independent package structures.

3. The symmetrical optical shadowless lamp according to claim 1, characterized in that: The color temperatures of the two sets of light-emitting chips are 3000K and 5700K respectively.

4. The symmetrical optical shadowless lamp according to claim 1, characterized in that: The lens housing is fixedly connected to the inner side surface of the fixing bracket through a screw connection structure.

5. The symmetrical optical shadowless lamp according to claim 1, characterized in that: The inner wall of the mounting hole is provided with a positioning groove; the top of the lens housing is matched in the positioning groove; The positioning grooves corresponding to the two lens housings of the same lens module are arranged in mirror symmetry.

6. The symmetrical optical shadowless lamp according to claim 5, characterized in that: An inner wall of the top opening of the lens housing is provided with a mounting support surface, and the molding mirror is arranged on the mounting support surface.

7. The symmetrical optical shadowless lamp according to claim 5, characterized in that: A limiting bayonet is provided on the top of the lens housing; and a limiting portion cooperating with the limiting bayonet is provided on the side of the molding mirror.

8. The symmetrical optical shadowless lamp according to claim 7, characterized in that: The upper bottom surface of the positioning groove covers and limits the upper part of the opening of the limiting bayonet.

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