Hand-held cross cylindrical mirror and fitting assembly
By designing a handheld cross-cylindrical lens, the frame can be flipped within the lens slot of the trial frame, solving the problem of inconvenient lens ring adjustment, improving the efficiency and accuracy of astigmatism detection and correction, increasing lens transmittance, and making the axis line markings more prominent, which is convenient for optometrists to operate.
Patent Information
- Application Number
- CN202422417955.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-08
AI Technical Summary
Existing cross-cylindrical lenses have a large diameter, making it difficult to get close to the optometry lenses placed in the trial frame, resulting in inconvenience in adjustment.
A handheld cross cylindrical lens was designed, including a frame, a cylindrical lens, and a handle. The frame can be freely rotated in the lens slot of the trial frame. The frame and the handle are detachably connected. It is equipped with positive and negative axis markings and a handle positioning arrow. The outer ring size is adapted to the lens slot. The lens surface is covered with a light-transmitting film layer.
It enables convenient operation of cross-cylindrical lenses on the trial frame, improves the efficiency and accuracy of astigmatism detection and correction, increases lens transmittance to 98%, and makes the axis line markings more prominent and accurate in positioning and adjustment.
Smart Images
Figure CN223541906U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of eyeglass fitting technology, and more specifically, to a handheld cross-cylindrical lens and eyeglass fitting components. Background Technology
[0002] A cross cylinder lens, also known as a Jackson cross cylinder lens (JCC), is an ophthalmic optical tool primarily used for detecting and correcting astigmatism. It consists of two cylinders with the same power but opposite signs and perpendicular axes. The main function of a cross cylinder lens is to accurately determine the axis and power of astigmatism. Its use requires that the axis and power of the astigmatism have already been initially determined. During refraction, the cross cylinder lens is used for fine-tuning astigmatism, including determining the axis and power of the cylinders. It is particularly suitable for precise adjustments to astigmatism, especially for making precise adjustments to the axis and power of the cylinders based on the initial astigmatism value. Cross cylinder lenses are often used in conjunction with a dotted target because this type of target has the characteristic of being indistinguishable in all directions, which helps to more accurately detect astigmatism.
[0003] The existing cross-cylindrical lens has a large lens diameter, making it difficult to get close to the refraction lens placed in the trial frame. Currently, trial frames usually have multiple lens slots, and the cross-cylindrical lens is usually placed in the inner slot, which blocks the lens slot and makes adjustment inconvenient. Utility Model Content
[0004] The purpose of this invention is to provide a handheld cross-cylindrical lens and lens fitting assembly, which can be adapted to the lens slot of the trial frame, thereby facilitating optometrists to detect and correct astigmatism during use.
[0005] The embodiments of this utility model are implemented as follows:
[0006] In the first aspect, this utility model provides a handheld cross cylindrical mirror, which includes a frame, a cylindrical mirror, and a handle;
[0007] The cylindrical lens is connected to the frame, and the frame can be freely rotated within the lens slot of the trial frame; the handle is connected to the frame.
[0008] In an optional embodiment, the frame includes a frame body and a lens housing, the frame body being detachably connected to the handle, and the cylindrical lens being housed in the lens housing.
[0009] In an optional implementation, two positive axis position line markers and two negative axis position line markers are provided on both sides of the frame.
[0010] Two positive axis position line marks and two negative axis position line marks are evenly spaced around the axis of the lens housing, with the two positive axis position line marks facing each other and the two negative axis position line marks facing each other.
[0011] In an optional embodiment, the positive axis positioning line marker includes a first circular groove, a first straight groove, and a white marking layer; the first straight groove extends along the radial direction of the lens receiving portion and communicates with the first circular groove, and the white marking layer is disposed in the first circular groove and the first straight groove;
[0012] The negative axis positioning line marking includes a second circular groove, a second straight groove, and a red marking layer; the second straight groove extends along the radial direction of the lens receiving part and communicates with the second circular groove, and the red marking layer is disposed in the second circular groove and the second straight groove.
[0013] In an optional embodiment, the frame is also provided with a cutout hole, and a handle positioning arrow is provided in the cutout hole. The handle positioning arrow extends along the direction of the handle and points to the middle of the positive axis line and the negative axis line.
[0014] In an optional implementation, positioning marks are provided on both sides of the frame.
[0015] In an optional embodiment, the surface of the cylindrical lens is covered with a light-transmitting film layer.
[0016] In an optional implementation, at least a portion of the outer periphery of the handle is provided with identification markings.
[0017] In an optional embodiment, the handle is provided with a marking groove along its extension direction, and an identification mark is accommodated in the marking groove.
[0018] Secondly, this utility model provides a lens fitting assembly, which includes a trial frame and the aforementioned handheld cross cylindrical lens; the lens frame can be placed in the lens slot of the trial frame and rotated freely.
[0019] The beneficial effects of this utility model embodiment include:
[0020] This handheld cross-cylindrical lens includes a frame, a cylindrical lens, and a handle; the cylindrical lens is connected to the frame, and the handle is connected to the frame. The frame of this handheld cross-cylindrical lens can be freely rotated within the lens slot of the trial frame, thus facilitating the optometrist's testing and correction of astigmatism during use. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a structural schematic diagram of the handheld cross cylindrical mirror from the first perspective in an embodiment of this utility model;
[0023] Figure 2 This is a structural schematic diagram of the handheld cross cylindrical mirror from a second perspective in an embodiment of this utility model;
[0024] Figure 3 This is a schematic diagram of the frame structure in an embodiment of the present utility model;
[0025] Figure 4 for Figure 3 A partial schematic diagram of point A in the middle;
[0026] Figure 5 for Figure 3 A partial schematic diagram at point B in the middle;
[0027] Figure 6 This is a schematic diagram of the handle in an embodiment of the present invention.
[0028] Icons: 100 - Handheld cross-cylindrical lens; 110 - Frame; 130 - Cylindrical lens; 150 - Handle; 111 - Frame body; 112 - Lens housing; 113 - Positive axis line marker; 114 - Negative axis line marker; 115 - First circular groove; 116 - First straight groove; 117 - Second circular groove; 118 - Second straight groove; 119 - Hole; 121 - Handle positioning arrow; 122 - Positioning mark; 151 - Identification mark; 152 - Marking groove. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0033] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] Please refer to Figures 1-3 This embodiment provides a handheld cross-cylindrical mirror 100, which includes a frame 110, a cylindrical lens 130, and a handle 150.
[0036] The cylindrical lens 130 is connected to the frame 110, and the frame 110 can be fitted with the lens slot of the trial frame; the handle 150 is connected to the frame 110.
[0037] In an optional embodiment, the frame 110 includes a frame body 111 and a lens receiving portion 112. The frame body 111 is detachably connected to the handle 150, and the cylindrical lens 130 is received in the lens receiving portion 112.
[0038] Please refer to Figures 1-3 The working principle of this handheld cross cylindrical lens 100 is as follows:
[0039] The handheld cross-cylindrical lens 100 includes a frame 110, a cylindrical lens 130, and a handle 150. The cylindrical lens 130 is connected to the frame 110, and the frame 110 can mate with the lens slot of a trial frame. The handle 150 is connected to the frame 110. In use, the handheld cross-cylindrical lens 100 is inserted into the lens slot of the trial frame. This arrangement improves ease of operation, facilitating astigmatism detection and correction by the optometrist.
[0040] It should be noted that the cross cylindrical lens 130 is formed by two cylindrical lenses 130 with equal refractive power but opposite signs, and the axes of the cylindrical lenses 130 are stacked perpendicularly to each other. Commonly used cross cylindrical lenses 130 have several specifications such as ±0.25DC, ±0.50DC, and ±1.00DC. That is, in order to facilitate the detection and correction of astigmatism, various specifications of handheld cross cylindrical lenses 100 are provided to facilitate the selection of the appropriate specifications of handheld cross cylindrical lenses 100 according to actual needs when conducting astigmatism detection and correction.
[0041] It should also be noted that, in order to facilitate the identification of the axis and the refractive power symbol of the cylindrical lens 130, the red dot on the handheld cross cylindrical lens 100 usually indicates the axis of negative astigmatism, that is, the maximum positive refractive power in this direction; the black dot indicates the axis of positive astigmatism, that is, the maximum negative refractive power in this direction.
[0042] In addition, the handle 150 is designed for easy gripping and flipping, so as to determine the axis of astigmatism by comparing the sharpness of different axes by flipping the cross cylindrical lens 130.
[0043] In addition, in this embodiment, in order to enable the handheld cross cylindrical lens 100 to be inserted into the lens slot of the trial frame, the outer ring of the frame 110 has a structural size that is compatible with the lens slot. For example, the outer ring size can be set to 34.2mm to ensure that the cross cylindrical lens 130 can be easily inserted into the lens slot of the optometry trial frame, which is convenient for flipping and adjustment, and solves the problem that the traditional cross cylindrical lens 130 cannot be adapted due to its excessive size.
[0044] Furthermore, existing cross-cylindrical lenses (130) generally have low light transmittance, typically around 92%, due to the lack of coating. Combined with the existing cylindrical lens (130), this results in more than two lenses overlapping, severely impacting light transmittance and affecting the accuracy of refraction. Therefore, in this embodiment, the surface of the cylindrical lens (130) is coated with a light-transmitting film. The purpose of this coating is to improve the light transmittance of the cylindrical lens (130) to 98%, a significant improvement compared to traditional uncoated products.
[0045] Based on the above, please refer to Figures 1-5 When configuring the frame 110, the frame 110 includes a frame body 111 and a lens receiving portion 112. The frame body 111 is detachably connected to the handle 150, and the cylindrical lens 130 is housed in the lens receiving portion 112. Furthermore, the outer ring of the frame 110 can be configured with a size adapted to the insert slot as described above. In addition, to facilitate positioning and adjustment of the handheld cross cylindrical lens 100, two positive axis position line marks 113 and two negative axis position line marks 114 are provided on both sides of the frame body 111.
[0046] Two positive axis position line marks 113 and two negative axis position line marks 114 are evenly spaced around the axis of the lens receiving part 112, with the two positive axis position line marks 113 facing each other and the two negative axis position line marks 114 facing each other.
[0047] Specifically, the positive axis position line mark 113 includes a first circular groove 115, a first straight groove 116, and a white marking layer; the first straight groove 116 extends along the radial direction of the lens receiving portion 112 and communicates with the first circular groove 115, and the white marking layer is disposed in the first circular groove 115 and the first straight groove 116.
[0048] The negative axis position line mark 114 includes a second circular groove 117, a second straight groove 118, and a red marking layer; the second straight groove 118 extends along the radial direction of the lens receiving portion 112 and communicates with the second circular groove 117, and the red marking layer is disposed in the second circular groove 117 and the second straight groove 118.
[0049] This configuration creates a clear color coding on the frame 110 of the cross-cylindrical lens 130; the positive axis is represented by white dots and lines, and the negative axis by red dots and lines. Combined with the circular and straight grooves, this makes the axis markings more prominent and easier to identify, further improving adjustment efficiency and accuracy. It should be noted that the aforementioned white and red marking layers can be colored coatings or colored blocks within the circular and straight grooves.
[0050] Further, please refer to Figures 1-5In this embodiment, the frame 111 is also provided with a hollow hole 119, and a handle positioning arrow 121 is provided in the hollow hole 119. The handle positioning arrow 121 extends along the direction of the handle 150 and points to the middle of the positive axis line and the negative axis line.
[0051] Moreover, it is located at the connection point between the two axis midlines and the handle 150. Through the setting of the cutout hole 119, a transparent window can be formed, which makes it convenient for the optometrist to directly observe the axis line of the refraction lens cylinder through the window when fine-tuning the axis according to the positioning arrow 121 of the handle, and to accurately align it with the arrow, which significantly improves the accuracy of the adjustment.
[0052] In addition, to facilitate the distinction between the front and back sides of the cross cylindrical lens 130 and ensure accurate use when flipped, positioning marks 122 are provided on both sides of the frame 111; and the positioning marks 122 can be numerical marks, letter marks or text marks marked on the front and back sides of the cross cylindrical lens 130, such as "I / II", "A / B", "1 / 2" or "front / back".
[0053] As can be seen from the above, to facilitate the detection and correction of astigmatism, various sizes of handheld cross-cylinder lenses 100 are provided, allowing for the selection of the appropriate size based on actual needs during astigmatism detection and correction. Therefore, to facilitate quick identification of different sizes of handheld cross-cylinder lenses 100 and thus rapid selection of the appropriate one, please refer to... Figures 1-6 At least a portion of the outer periphery of the handle 150 is provided with an identification mark 151. Furthermore, the identification mark 151 can employ various two-tone color combinations, with each color corresponding to a different cross-cylindrical lens power 130, facilitating optometrists to quickly distinguish and select the appropriate cross-cylindrical lens power 130. Specifically, the handle 150 has a marking groove 152 along its extending direction, and the identification mark 151 is housed within the marking groove 152; that is, the identification mark 151 can be a colored coating disposed within the marking groove 152, or it can be a colored block fitted within the marking groove 152.
[0054] Based on the above, please refer to Figures 1-6 This embodiment also provides a lens fitting assembly, which includes a trial frame and the aforementioned handheld cross cylindrical lens 100; the lens frame 110 can be fitted with the lens slot of the trial frame.
[0055] This lens fitting assembly, by employing the aforementioned handheld cross-cylindrical lens 100, allows the handheld cross-cylindrical lens 100 to be freely rotated within the lens slot of the trial frame during use, facilitating the optometrist's detection and correction of astigmatism.
[0056] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A handheld cross-cylindrical mirror, characterized in that: The handheld cross cylindrical lens includes a frame, a cylindrical lens, and a handle; The cylindrical lens is connected to the lens frame, and the lens frame can mate with the lens slot of the trial frame; the handle is connected to the lens frame.
2. The handheld cross-cylindrical mirror according to claim 1, characterized in that: The frame includes a frame body and a lens housing, the frame body is detachably connected to the handle, and the cylindrical lens is housed in the lens housing.
3. The handheld cross-cylindrical mirror according to claim 2, characterized in that: The frame is equipped with two positive axis position line marks and two negative axis position line marks on both sides. The two positive axis position line marks and the two negative axis position line marks are evenly spaced around the axis of the lens receiving part, and the two positive axis position line marks are facing each other.
4. The handheld cross-cylindrical mirror according to claim 3, characterized in that: The positive axis positioning line marker includes a first circular groove, a first straight groove, and a white marking layer; the first straight groove extends along the radial direction of the lens receiving portion and communicates with the first circular groove, and the white marking layer is disposed in the first circular groove and the first straight groove; The negative axis positioning line marker includes a second circular groove, a second straight groove, and a red marking layer; the second straight groove extends along the radial direction of the lens receiving portion and communicates with the second circular groove, and the red marking layer is disposed in the second circular groove and the second straight groove.
5. The handheld cross-cylindrical mirror according to claim 2, characterized in that: The frame is also provided with a cutout hole, and a handle positioning arrow is provided in the cutout hole. The handle positioning arrow extends along the direction of the handle and points to the middle of the positive axis line and the negative axis line.
6. The handheld cross-cylindrical mirror according to claim 2, characterized in that: Positioning marks are provided on both sides of the frame.
7. The handheld cross-cylindrical mirror according to claim 1, characterized in that: The surface of the cylindrical mirror is covered with a light-transmitting film layer.
8. The handheld cross-cylindrical mirror according to any one of claims 1-7, characterized in that: At least a portion of the outer periphery of the handle is provided with identification markings.
9. The handheld cross-cylindrical mirror according to claim 8, characterized in that: The handle is provided with a marking groove along its extension direction, and the identification mark is accommodated in the marking groove.
10. A lens fitting assembly, characterized in that: The lens fitting assembly includes a trial frame and a handheld cross-cylindrical lens as described in any one of claims 1-9; the lens frame can mate with the lens slot of the trial frame.