A prism catadioptric LED surgical shadowless light optical system

Abstract

The present application discloses a prism catadioptric LED surgical shadowless light optical system, comprising: a plurality of optical components; each optical component comprises a prism structure and an LED; wherein the bottom of the prism structure is provided with an incident groove, and the top is provided with an exit groove opposite to the incident groove; the bottom wall of the prism structure is a total reflection surface; a foot is provided at the connection between the bottom wall and the notch of the incident groove; the LED is located at the notch of the incident groove; and a circuit board carrying the LED is fixed to the foot. The above-mentioned prism catadioptric LED surgical shadowless light optical system utilizes a prism structure as an optical element and is used in conjunction with the LED. The light emitted by each LED is reflected and refracted by the corresponding prism structure to form a beam of light that hits the operating table. The different light beams formed by the light emitted by different LEDs cooperate with each other to achieve a better shadowless effect. In addition, the volume of the optical component structure composed of the prism structure and the LED is not too large, making the surgical light easy to move.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a prism catadioptric LED surgical shadowless light optical system. Background Art

[0002] With innovations and changes in the lighting industry, incandescent and halogen lamps can no longer meet the high-intensity, low-power requirements of operating room lighting. The lifespan of a light-emitting diode (LED) is determined to have expired when its lumen maintenance drops below 70%. While the average lifespan of a halogen lamp is 1,000 hours, an LED can reach over 50,000 hours. This means that an LED can operate for over five years under 24-hour continuous lighting conditions, a lifespan 50 times or more that of a halogen lamp.

[0003] Based on this, LED shadowless surgical lights have made their debut. However, due to the limited research and development, the optical design of current LED shadowless surgical lights cannot achieve a good shadowless effect. They are also too thick and bulky, and the illumination is insufficient, which affects the laminar flow effect in the operating room. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a prism catadioptric LED surgical shadowless light optical system that can achieve a good shadowless effect and facilitate the movement of the surgical light. The specific scheme is as follows:

[0005] A prism catadioptric LED surgical shadowless light optical system, comprising: a plurality of optical components; each of the optical components comprises a prism structure and an LED; wherein,

[0006] The bottom of the prism structure is provided with an incident groove, and the top is provided with an exit groove opposite to the incident groove;

[0007] The bottom wall of the prism structure is a total reflection surface; a foot is provided at the connection between the bottom wall and the notch of the incident groove;

[0008] The LED is located at the notch of the incident slot; and the circuit board carrying the LED is fixed to the base.

[0009] Preferably, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, all the optical components are divided into multiple optical modules according to set rules;

[0010] All the optical modules are distributed in rotational symmetry with respect to the main optical axis of the optical system; or

[0011] All the optical modules are symmetrically distributed with any straight line on a plane perpendicular to the main optical axis of the optical system as a symmetry axis.

[0012] Preferably, in the prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, all the LEDs included in each optical module emit light at different angles through the prism structure.

[0013] Preferably, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, the spot sizes and central illuminations presented by all the LEDs contained in each optical module at a set distance from the front surface of the optical system are different from each other.

[0014] Preferably, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, the angles between all the prism structures and the direction perpendicular to the main optical axis of the optical system are no more than 10°.

[0015] Preferably, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, the LED is divided into a cold white light LED and a warm white light LED;

[0016] The cold white light LED is driven and controlled by a first constant voltage circuit or a first constant current circuit;

[0017] The warm white LED is driven and controlled by a second constant voltage circuit or a second constant current circuit.

[0018] Preferably, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, the illumination of the LEDs at different positions is adjusted by a control circuit.

[0019] Preferably, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, the total thickness of the optical system is not greater than 4 cm.

[0020] Preferably, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the embodiment of the present invention, the bottom of the LED and the notch of the incident slot are located at the same horizontal plane.

[0021] It can be seen from the above technical solution that the prism catadioptric LED surgical shadowless light optical system provided by the present invention includes: multiple optical components; each optical component includes a prism structure and an LED; wherein, the bottom of the prism structure is provided with an incident groove, and the top is provided with an exit groove opposite to the incident groove; the bottom wall of the prism structure is a total reflection surface; a base foot is provided at the connection between the bottom wall and the notch of the incident groove; the LED is located at the notch of the incident groove; and the circuit board carrying the LED is fixed to the base foot.

[0022] The above-mentioned prism catadioptric LED surgical shadowless light optical system provided by the present invention utilizes a prism structure as an optical element of the optical system and is used in conjunction with LEDs. The light emitted by each LED is reflected and refracted by the corresponding prism structure to form a beam of light that hits the operating table. The different light beams formed by the light emitted by different LEDs cooperate with each other to achieve a better shadowless effect. In addition, the volume of the optical component structure composed of the prism structure and the LED is not too large, making the surgical light easy to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain other drawings or other forms, such as physical drawings, similar structure drawings, etc., based on the provided drawings.

[0024] Figure 1 A schematic diagram of the frontal perspective structure of the prism catadioptric LED surgical shadowless light optical system provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the longitudinal arrangement of the prism structure of the prism catadioptric LED surgical shadowless light optical system provided by an embodiment of the present invention;

[0026] Figure 3 A side perspective schematic diagram of a prism catadioptric LED surgical shadowless light optical system provided by an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the optical module grouping of the prism catadioptric LED surgical shadowless light optical system provided in an embodiment of the present invention;

[0028] Figure 5 A top front perspective view of the prism structure of the prism catadioptric LED surgical shadowless light optical system provided by an embodiment of the present invention;

[0029] Figure 6 A bottom front perspective view of the prism structure of the prism catadioptric LED surgical shadowless light optical system provided by an embodiment of the present invention;

[0030] Figure 7 This is a schematic perspective diagram of the prism structure of the prism catadioptric LED surgical shadowless light optical system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The present invention provides a prism catadioptric LED surgical shadowless light optical system, such as Figures 1 to 7 As shown, it includes: multiple optical components; each optical component includes a prism structure 1 and an LED 2; wherein,

[0033] The bottom of the prism structure 1 is provided with an incident slot 3, and the top is provided with an exit slot 4 opposite to the incident slot 3;

[0034] The bottom wall 5 of the prism structure 1 is a total reflection surface; a foot is provided at the connection between the bottom wall 5 and the notch 6 of the incident groove 3;

[0035] The LED 2 is located at the notch 6 of the incident slot 3 ; the circuit board carrying the LED 2 is fixed to the base.

[0036] In the above-mentioned prism catadioptric LED surgical shadowless light optical system provided in an embodiment of the present invention, a prism structure 1 is used as an optical element of the optical system and is used in conjunction with LED 2. The light emitted by each LED 2 is reflected and refracted by the corresponding prism structure 1 to form a beam of light that hits the operating table. The different light beams formed by the light emitted by different LEDs 2 cooperate with each other to achieve a better shadowless effect, and the optical component structure composed of the prism structure 1 and LED 2 will not be too large, making the surgical light easy to move.

[0037] It should be noted that surgical shadowless lights typically consist of a lamp body and a lamp frame. This invention designs the optical system within the lamp body for operating room illumination, minimizing shadows in the work area caused by partial occlusion of the surgeon. The arrangement and number of optical components in this invention can be determined based on actual conditions, ensuring that the illumination of the surgical light is within the specified range to meet surgical requirements.

[0038] In specific implementation, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided in the embodiment of the present invention, as Figure 7As shown, the bottom of the LED 2 and the notch 6 can be coplanar. Preferably, the LED 2 can be placed directly in the center of the notch 6, allowing the light emitted by the LED 2 to be better reflected and refracted within the prism structure 1, thereby shaping the optical path. Preferably, the notch 6 of the incident slot 3 can be flat, facilitating fabrication. Alternatively, the bottom wall of the prism structure 1 can connect to the notch 6 of the incident slot 3 at the bottom and to the top of the prism structure 1 at the top.

[0039] In specific implementation, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided in the embodiment of the present invention, as Figure 3 As shown, the total thickness of the optical system is no more than 4 cm. The thickness of the optical system reduces the thickness burden of the fixed optical system frame. The thickness and weight of the surgical lamp using this optical system can be minimized as much as possible. The thinner the lamp panel is, the better the heat dissipation effect of the lamp head is, and the easier it is to move.

[0040] In a specific implementation, in the prism catadioptric LED surgical shadowless light optical system provided in an embodiment of the present invention, the angle between each prism structure 1 and the direction perpendicular to the principal optical axis of the optical system may be no greater than 10°. It should be noted that the angle adjustment range of the LED and prism structures can be adjusted according to actual conditions and is not limited here.

[0041] Furthermore, in a specific implementation, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided in an embodiment of the present invention, all the optical components can be divided into N optical modules (N≥2, N is a positive integer) according to a set rule; Figure 4 Specifically, all optical modules can be distributed in a rotationally symmetrical manner with the main optical axis of the optical system as the center; or all optical modules can be distributed in a symmetrical manner with any straight line on a plane perpendicular to the main optical axis of the optical system as the symmetry axis.

[0042] by Figure 1 and Figure 2 For example, the present invention divides the optical system into six optical modules. The graph formed by these six optical modules is a rotationally symmetrical graph, which is rotationally symmetrically distributed around the main optical axis of the optical system.

[0043] In specific implementations, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided in an embodiment of the present invention, the angles at which all LEDs 2 contained in each optical module emit light through the prism structure 1 can be different from each other. The light beams formed by multiple LEDs 2 emitting light from different angles cooperate with each other to achieve a superior shadowless effect; and / or, the spot size and central illumination presented by all LEDs 2 contained in each optical module at a set distance from the front surface of the optical system can be different from each other, providing sufficient central illumination to illuminate the patient's body part during the surgical process. Preferably, the set distance can be selected as 1m. The length of the set distance can be determined according to actual conditions and is not limited here.

[0044] In a specific implementation, in the prism catadioptric LED surgical shadowless light optical system provided in an embodiment of the present invention, the luminous flux of each LED 2 can be no less than 100 lm. The prism structure 1 can accommodate LEDs 2 with any divergence angle, with a 120° divergence angle being optimal. When a single LED 2 is operating, a rounded, full light spot can be observed at a set distance (e.g., 1 m) directly in front of the top of the prism structure.

[0045] Furthermore, in the prism-type catadioptric LED surgical shadowless light optical system provided in the embodiments of the present invention, LED 2 can be divided into two types, cold white LEDs and warm white LEDs, according to their color temperature. The cold white LEDs are driven and controlled by a first constant voltage circuit or a first constant current circuit, while the warm white LEDs are driven and controlled by a second constant voltage circuit or a second constant current circuit. This configuration of high-luminous flux cold white LEDs and warm white LEDs ensures that the surgical light using this optical system reproduces the color of daylight while achieving sufficient illumination with a relatively small number of LEDs, while also being energy-efficient and environmentally friendly.

[0046] In practical applications, electrical designers can independently develop a constant voltage circuit or a constant current circuit to drive and control the corresponding LED 2 . The driving voltage value or the driving current value can be divided into multiple gears, such as ten.

[0047] In specific implementation, in the above-mentioned prism catadioptric LED surgical shadowless light optical system provided in the embodiment of the present invention, the illumination of LED 2 at different positions is adjusted by the control circuit, and then the working state of LED 2 at different positions can be adjusted to achieve adjustment of the surgical field spot size, color temperature, illumination, etc.

[0048] In practical applications, electrical designers can adjust the power of LED 2 at different locations by customizing the electrical control logic, thereby changing the target spot size and central illumination to improve the shadowless effect. In this invention, the LED surgical shadowless light optical system can achieve a maximum central illumination of 600Klx at a set distance (e.g., 1 meter) from the front surface of the optical system. This design concept provides a relatively flexible approach, and surgical lights using this optical system are easy to adjust and operate.

[0049] Specifically, the control circuit adjusts the illumination ratio of the cool white LEDs and the warm white LEDs to achieve color temperature adjustment of the optical system, ranging from 3500K to 5000K, divided into multiple levels, such as five. Alternatively, the control circuit can adjust the driving current or voltage of each ring of LEDs 2 to achieve spot adjustment of the LED surgical light optical system. The spot size control is divided into multiple levels, such as three, corresponding to a 200mm-340mm optical system spot. Each level of illumination and color temperature corresponds to a set of DA output voltage values ​​and a set of driving current values, although the specific form is not limited here.

[0050] It should be noted that the control circuit of the present invention can be freely designed, which increases the adjustable range of LED power of the entire optical system and improves the upper limit of the shadowless effect.

[0051] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0052] In summary, the embodiment of the present invention provides a prism catadioptric LED surgical shadowless light optical system, comprising: a plurality of optical components; each optical component comprises a prism structure and an LED; wherein an incident groove is provided at the bottom of the prism structure, and an exit groove opposite to the incident groove is provided at the top; the bottom wall of the prism structure is a total reflection surface; a base is provided at the connection between the bottom wall and the notch of the incident groove; the LED is located at the notch of the incident groove; and the circuit board carrying the LED is fixed to the base. The above-mentioned prism catadioptric LED surgical shadowless light optical system utilizes a prism structure as an optical element of the optical system and is used in conjunction with an LED. The light emitted by each LED is reflected and refracted by the corresponding prism structure to form a beam of light that hits the operating table. The different light beams formed by the light emitted by different LEDs cooperate with each other to achieve a better shadowless effect. In addition, the volume of the optical component structure composed of the prism structure 1 and the LED is not too large, making the surgical light easy to move.

[0053] Finally, it should be noted that, in the present invention, unless otherwise expressly specified or limited, terms such as "fixed" and "connected" should be understood in a broad sense. For example, they can be fixed by connection or relatively fixed, connected by line or internally connected. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising a..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0054] The above is a detailed introduction to the prism catadioptric LED surgical shadowless light optical system provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A prism catadioptric LED surgical shadowless light optical system, characterized in that: include: A plurality of optical components; each of the optical components comprises a prism structure and an LED; wherein, The bottom of the prism structure is provided with an incident groove, and the top is provided with an exit groove opposite to the incident groove; The bottom wall of the prism structure is a total reflection surface; a foot is provided at the connection between the bottom wall and the notch of the incident groove; The LED is located at the notch of the incident slot; the circuit board carrying the LED is fixed to the base; All the optical components are divided into multiple optical modules according to set rules; All the optical modules are distributed in a rotationally symmetrical manner with the main optical axis of the optical system as the center; or all the optical modules are distributed in a symmetrical manner with any straight line on a plane perpendicular to the main optical axis of the optical system as the symmetry axis; The angles at which all the LEDs contained in each optical module emit light through the prism structure are different from each other; the spot sizes and central illuminations presented by all the LEDs contained in each optical module at a set distance from the front surface of the optical system are different from each other; The included angles between all the prism structures and the direction perpendicular to the principal optical axis of the optical system are no greater than 10°.

2. The prism catadioptric LED surgical shadowless light optical system according to claim 1, characterized in that: The LEDs are divided into cold white LEDs and warm white LEDs; The cold white light LED is driven and controlled by a first constant voltage circuit or a first constant current circuit; The warm white LED is driven and controlled by a second constant voltage circuit or a second constant current circuit.

3. The prism catadioptric LED surgical shadowless light optical system according to claim 1, characterized in that: The illumination of the LEDs at different positions is adjusted by a control circuit.

4. The prism catadioptric LED surgical shadowless light optical system according to claim 1, characterized in that: The total thickness of the optical system is not more than 4 cm.

5. The prism catadioptric LED surgical shadowless light optical system according to claim 1, characterized in that: The bottom of the LED and the notch of the incident slot are located at the same horizontal plane.

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