Ocular lens personal dosimeter

Abstract

The utility model provides an eye crystal personal dosimeter which comprises a clamping ring used for clamping a head, the clamping ring is provided with two end portions, at least one end portion is connected with a rotating handle in a rotating mode, an installation groove is formed in the outer side of the free end of the rotating handle, the installation groove is detachably connected with a sealing cap, and the sealing cap is fixedly connected with the clamping ring. The thickness of the inner side of the end, connected with the clamping ring, of the rotating handle is reduced at the end, a rotating shaft is arranged on the inner side of the end, a limiting piece is arranged at the end of the rotating shaft, a flange protruding outwards is arranged at the end of the clamping ring, and a bayonet allowing the rotating shaft to enter and rotate is formed in the flange. The problems that in the prior art, wearing experience is poor, falling off is prone to occurring, sight is affected, wearing of the protection device is hindered, and wearing steps are tedious are solved.

Description

Technical Field

[0001] This utility model relates to the field of radiation protection technology, and in particular to a personal dosimeter for the eye lens. Background Technology

[0002] With the rapid development of nuclear technology and radiation medicine, occupational exposure of radiation workers has received increasing attention. As one of the most radiation-sensitive organs in the human body, the radiation dose received by the eye lens needs to be accurately monitored. Personal dosimeters for the eye lens are typically used to monitor the radiation received.

[0003] The technical principle of personal dosimeters for the eye lens is primarily based on the thermoluminescence effect. When the thermoluminescent material in the detector is irradiated, it absorbs the radiation energy and stores it in lattice defects. During subsequent heating, this stored energy is released as light, and the radiation dose can be determined by measuring the intensity of the released light.

[0004] The existing personal dosimeter for the eye lens consists of a sliding rod attached to an elastic band. The elastic band also has an adjustment buckle for adjusting its length. A thermoluminescent disc is attached to the end of the sliding rod. When worn, the elastic band is placed above the eyes. This type of personal dosimeter has several drawbacks: 1. The elastic band is a single loop and quite wide, resulting in a poor wearing experience; 2. The head space above the eyes is limited, especially for people with short upper faces, making the device prone to slipping off the head; 3. The sliding rod can only slide left and right, not rotate, and can only approach the eyes from above, which can obstruct vision and hinder the wearing of protective lead glasses and caps; 4. The length of the elastic band needs to be adjusted before use to prevent the sliding rod from sliding too easily or too slowly, making the wearing process cumbersome. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a personal dosimeter for the eye lens, which solves the problems of poor wearing experience, easy dislodgement, obstruction of vision, hindering the wearing of protective devices, and cumbersome wearing procedures.

[0006] A personal dosimeter for eye lenses includes a retaining ring for securing a head. The retaining ring has two ends, at least one of which is rotatably connected to a rotating handle. The outer side of the free end of the rotating handle is provided with a mounting groove, and a sealing cap is detachably connected to the mounting groove. The inner side of the end of the rotating handle connected to the retaining ring is thinner at the end, and a rotating shaft is provided on the inner side of this end. A limiting piece is provided at the end of the rotating shaft. The end of the retaining ring has an outwardly protruding flange, and a locking slot is provided on the flange for the rotating shaft to enter and rotate.

[0007] The method of using this invention is as follows: Insert the thermoluminescent sheet into the mounting slot, then install the sealing cap onto the mounting slot. Secure the rotating shaft of the rotating handle to the retaining ring at the bayonet opening. The limiting piece is located outside the bayonet opening to prevent the rotating handle from falling out of the retaining ring. The rotating handle can be installed at one or both ends of the retaining ring as needed. After installation, secure the retaining ring to the head, approximately at the ear level, and then rotate the rotating handle to ensure it adheres to the desired position around the eyes. After the measurement cycle is completed, open the sealing cap, remove the thermoluminescent sheet, and measure the received radiation dose.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] 1. This utility model ingeniously introduces a retaining ring design to secure the dosimeter to the head area. This improvement allows the retaining ring to maintain an efficient locking effect while being more compact in size compared to traditional elastic band designs. This design strategy greatly reduces pressure on the head and significantly improves the wearer's comfort experience, which is especially important for occasions requiring prolonged wear.

[0010] 2. Regarding the wearing position, this invention also achieves optimization. It allows the dosimeter to be worn near the ear, compared to the existing technology which usually requires wearing it closer to the top of the head. This change makes full use of the physiological characteristic that the head circumference is relatively large at the ear position, effectively reducing the risk of the clasp falling off due to changes in head circumference, and ensuring the stability and safety of the dosimeter.

[0011] 3. The rotating handle and the retaining ring feature a rotating connection design. This innovative design allows the handle to be flexibly moved from the ear to the eye, thus avoiding obstruction of the wearer's vision. This design not only improves the wearer's visual clarity but also facilitates compatibility with other protective equipment such as lead glasses and lead caps.

[0012] 4. The tightness of the retaining ring does not affect the rotation of the handle in this invention. This design allows the wearer to easily achieve flexible rotation of the handle without frequent adjustment of the retaining ring tightness, greatly simplifying the operation process and improving the convenience and efficiency of use.

[0013] In summary, this utility model, through a series of innovative designs, not only improves wearing comfort and reduces the risk of falling off, but also optimizes the wearing position, avoids obstruction of vision, and simplifies the operation process, bringing a brand-new experience to the wearing and use of dosimeters.

[0014] Furthermore, a through hole is provided in the mounting groove, and a push rod for insertion into the through hole is provided on the sealing cap.

[0015] Furthermore, the bayonet has a strip-shaped guide portion and a circular end portion.

[0016] Furthermore, the mounting groove is provided with a receiving groove for holding the thermoluminescent sheet.

[0017] Furthermore, the retaining ring, rotating handle, and sealing cap are all made of resin.

[0018] Furthermore, the edges of the retaining ring are rounded. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 This is a schematic diagram of the rotating handle in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the retaining ring in an embodiment of the present invention.

[0022] Figure 4 This is another structural schematic diagram of the rotating handle in an embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the sealing cap in an embodiment of the present invention.

[0024] In the above attached figures: 1. retaining ring; 2. rotating handle; 3. sealing cap; 4. rotating shaft; 5. limiting piece; 6. flange; 7. bayonet; 8. mounting groove; 9. through hole; 10. receiving groove; 11. top rod. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the embodiments.

[0026] This utility model embodiment proposes a personal dosimeter for the eye lens, as shown in the attached figure. Figure 1 As shown, it includes a retaining ring 1 for locking the head, the retaining ring 1 having two ends, wherein at least one of the ends is rotatably connected to a rotating handle 2, and in this embodiment, rotating handles 2 are provided at both ends of the retaining ring 1.

[0027] The outer side of the free end of the rotating handle 2 is provided with a mounting groove 8, and a sealing cap 3 is detachably connected to the mounting groove 8. In this embodiment, the outer side refers to the side that does not fit against the head when worn, and the inner side refers to the side that fits against the head.

[0028] As attached Figure 2 and attached Figure 3As shown, the inner thickness of the end of the rotating handle 2 connected to the retaining ring 1 becomes thinner at the end, and a rotating shaft 4 is provided on the inner side of this end. A limiting piece 5 is provided at the end of the rotating shaft 4. The end of the retaining ring 1 has an outwardly protruding flange 6, and a locking slot 7 is provided on the flange 6 for the rotating shaft 4 to enter and rotate.

[0029] The thinning of the end of the rotating handle 2 and the flange 6 at the end of the retaining ring 1 allow both the inner surfaces of the rotating handle 2 and the retaining ring 1 to fit snugly against the head. If a conventional rotating connection method is used, that is, the rotating handle 2 and the retaining ring 1 are stacked together in the thickness direction, there are two stacking methods. The first is to stack the rotating handle 2 on the outside of the retaining ring 1, which makes it difficult for the end of the rotating handle 2 where the thermoluminescent sheet is mounted to fit snugly against the area around the eyes. The second is to stack the rotating handle 2 on the inside of the retaining ring 1, which does not affect the fit between the rotating handle 2 and the area around the eyes, but prevents the retaining ring 1 from directly contacting the head. This results in the retaining ring 1's clamping force being too concentrated at both ends of the retaining ring 1, reducing wearing comfort.

[0030] As attached Figure 2 As shown, a weight-reducing groove can also be provided on the rotating handle 2 to reduce weight and save raw materials.

[0031] like Figure 4 and Figure 5 As shown, a through hole 9 is provided in the mounting groove 8, and a push rod 11 for insertion into the through hole 9 is provided on the sealing cap 3. The push rod 11 has the functions of positioning and limiting. During use, the friction between the push rod 11 and the through hole 9 prevents the sealing cap 3 from falling off. It should be noted that the name of the sealing cap 3 here does not represent a limitation on the sealing level. It is sufficient to ensure that the thermoluminescent sheet does not fall out of the mounting groove 8 while meeting a certain thickness requirement to allow X-rays to penetrate.

[0032] like Figure 3 As shown, the bayonet 7 has a strip-shaped guide portion and a circular end. The width of the guide portion is smaller than the diameter of the circular end. In the assembled state of the rotating handle 2 and the retaining ring 1, the rotating shaft 4 and the circular end are in clearance fit. The rotating handle 2 can maintain its positional stability in use by relying on the friction between the rotating shaft 4 and the bayonet 7, as well as the friction between the inner surface of the rotating handle 2 and the face.

[0033] As attached Figure 4 As shown, the mounting groove 8 is provided with a receiving groove 10 for holding the thermoluminescent sheet. The size of the receiving groove 10 is approximately the same as that of the thermoluminescent sheet to prevent the thermoluminescent sheet from shaking and being damaged within the mounting groove 8, which would affect the final measurement results.

[0034] The retaining ring 1, rotating handle 2, and sealing cap 3 are all made of resin material; in this embodiment, toughened POM material is used. This material has high strength, toughness, and wear resistance, and also has good processing performance, making it easy to process into parts of various shapes and sizes through injection molding, extrusion, and other molding processes.

[0035] The edges of the retaining ring 1 are rounded to improve the feel and prevent scratches.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A personal dosimeter for the eye lens, characterized in that: The device includes a retaining ring for locking the head, the retaining ring having two ends, wherein at least one of the ends is rotatably connected to a rotating handle, the outer side of the free end of the rotating handle is provided with a mounting groove, the mounting groove is detachably connected to a sealing cap, the inner side of the end of the rotating handle connected to the retaining ring is thinned at the end, and a rotating shaft is provided on the inner side of this end, the end of the rotating shaft is provided with a limiting piece, and the end of the retaining ring has an outwardly protruding flange, the flange being provided with a locking slot for the rotating shaft to enter and rotate.

2. The personal dosimeter for an ocular lens as described in claim 1, characterized in that: The mounting groove is provided with a through hole, and the sealing cap is provided with a push rod for insertion into the through hole.

3. The personal dosimeter for an ocular lens as described in claim 2, characterized in that: The bayonet has a strip-shaped guide section and a circular end.

4. The personal dosimeter for an ocular lens as described in claim 1, characterized in that: The mounting slot is provided with a receiving slot for holding the thermoluminescent sheet.

5. A personal dosimeter for ocular lenses as described in claim 1, characterized in that: The retaining ring, rotating handle, and sealing cap are all made of resin.

6. The personal dosimeter for an ocular lens as described in claim 1, characterized in that: The edges of the retaining ring are rounded.

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