TWM246635U - Lens barrel of digital camera - Google Patents

Description

M246635

[Technical field] This creation is about the lens barrel of a digital camera. [Previous technology] With the development of multimedia technology, digital cameras and video cameras are becoming more and more popular with consumers. Requirements on the quality of the image of the object being shot ^ I hope the image of the object is clear in the daytime, and the amount of the object depends to a large extent on the digital camera.

Compared with other general optical instruments in a digital camera, the structure of a digital camera is more complex and generally consists of multiple lenses. When these lenses are designed, their relative positions are treated as completely ideal situations. The lens of a digital camera is generally placed in the lens barrel. Therefore, a good lens should have a good and reasonable frame and barrel design, and should it? The lens barrel is designed with a good assembly method, so that after the lenses are connected, the concentricity error and interval error are controlled within a certain range, so as to ensure the good imaging quality of each lens combination.

Please refer to the first figure for the lens barrel of a digital camera. The lens barrel 10 of the digital camera includes a barrel u, a plurality of spacer rings 13, and an infrared cut-off filter 1 4 'The barrel 11 is a hollow cylinder. In order to accommodate the plurality of spacer rings 丨 3, the plurality of lenses 12 and the infrared cut filter 14, the spacer ring i 3 is in a ring shape, and the assembly of the plurality of lenses 12 and the plurality of spacer rings 13 is installed in the digital space when assembled. In the cavity (not labeled) of the barrel 11 of the camera, the plurality of spacer rings 丨 3 are located between the plurality of lenses 12 to locate the distance between the plurality of lenses 12 and the infrared cut-off filter j 4 is placed in the barrel 11 bottom.

Page 6 M246635 IV. Creation instructions (2) Although the lens barrel 10 of the digital camera can be assembled with multiple lenses 12 to achieve the lens of a digital camera. The image, however, is about one-thousandth of a million depending on the characteristics of the plastic when it is molded. The shrinkage of five to six thousandths, and due to processing accuracy, there will be a certain error between the inner diameter of the lens barrel and the preset value; in addition, the edge of the conventional lens 12 is designed at a right angle, and its diameter is also related to the diameter of the lens during processing. There is a certain error in the predetermined value, so when the lens 12 and the lens barrel 10 are assembled after injection molding, the fitting tolerance is too large during assembly due to the size change, so that the center of the optical axis of the assembled lens 2 and the center of the lens barrel 10 The inconsistent lines lead to eccentricity, and the concentricity of each lens of the multiple lens 丨 2 is not easy to control, which makes the assembly rate of the lens group lower. ~ Here, we provide a digital camera lens with better concentricity and easier assembly. It is really necessary. [Content] The purpose of this creation is to provide a lens barrel for a digital camera with better concentricity and better assembly. The blade is a lens barrel of a digital camera, which includes a barrel body and a compound lens, which are placed inside the barrel body and each include an outer circumferential surface. The barrel body includes a tapered inner circumferential surface and the outside of the plurality of lenses. The peripheral surface of the circle 71 111 is closely matched with the inner peripheral surface of the barrel. .

Compared with the conventional technology, the fault of this digital camera

Wind < lens design rabbit body includes an inner circumferential surface with a taper, so that the lens and… do not eccentric, good concentricity to improve the imaging quality of the lens group, group jealous, easy to graduate. Show the direction, the assembly is relatively easy. [Implementation method] Please refer to the second to fifth pictures.

Page 7 M246635 4. Creation instructions (3) Including a cylinder 21, lenses 22, 23, spacer rings 24, 25, and an infrared cut-off filter 26. The lens 22 and the lens 23, the spacer rings 24 and 25, and an infrared cut filter 26 are housed in the barrel 21 in this order. ~ The barrel 2 1 is a hollow cylinder, which includes a top 2 11 and a tapered inner circumferential surface 2 1 2 (refer to the fifth figure). The center of the surface of the top 2 11 is a cone that gradually increases in diameter from bottom to top. The taper of the inner groove 213 and the inner circumferential surface 212 gradually changes the inner diameter of the barrel 21 (refer to the fifth figure). In this embodiment, j pieces 22 and 23 are round-shaped lenses. The outer diameter of the j pieces 22 and 23 matches the change of the inner diameter of the cylinder body 21, and the lenses 22 and 23 each include a taper ϋ circumferential surface 2 2 1, 2 3 1, Its taper matches the taper of the inner circumferential surface 2 i 2 of the barrel 21 respectively, and the outer circumferential surfaces 221 and 231 match the inner circumferential surface 212 of the barrel 21 respectively. The spacer ring 2 4 is a circular truncated ring, which is accommodated in the barrel 21 and is located between the lens 22 and the lens 23 so as to position the distance between the lens 22 and the lens 23 and support the lens 2 2 ′. The inner diameter of the barrel 21 is changed. The spacer ring 2 4 includes an outer circumferential surface 241 having a taper, the taper matching the taper of the barrel 21, and the outer circumferential surface 241 matching the inner circumferential surface 212 of the barrel 21. The spacer ring 2 5 is a circular truncated ring, which is embedded in the barrel 2 丨 and is located between the lens 2 3 and the infrared cut filter 26, so as to position the distance between the lens 2 2 and the infrared cut filter 26 and support the lens 23 The outer diameter of the outer ring matches the inside of the barrel. The spacer ring 25 includes a tapered outer circumferential surface 251. The taper matches the taper of the two-piece barrel 21. The outer circumferential surface 241 matches the inner circumferential surface 2 of the barrel 21. 11. The infrared cut-off filter 2 6 is embedded in a groove (not shown) formed on the bottom surface of the barrel 2 1.

Page 8 broken 46635 3. Creation instructions (4) When assembling, the lens 22 is placed in the barrel 21, and the outer circumferential surface 221 of the lens 22 is matched with the inner circumferential surface 2 1 2 of the barrel 2 1 and tightly fitted with it. The spacer ring 24 is fitted into the barrel 21, and its outer circumferential surface 241 is matched with the inner circumferential surface 212 of the barrel 21, and it supports the lens 22, and then the lens 23 is plugged into the barrel 21, and its outer circumferential surface 231 is closely fitted with the inner circumferential surface 212 of the barrel 21, and then the spacer ring 25 is plugged into the barrel 21, and its outer circumferential surface 251 is matched with the inner circumferential surface 2 1 2 of the barrel 21, and the lens is supported by it 2 3, Finally, the infrared cut filter $ 2_6 is embedded in the bottom groove of the barrel 2 1 to support the spacer ring 25. I — ---- The infrared cut-off filter 26 of the lens barrel 20 of this digital camera can also be replaced by other types of filters such as color filters, lenses 2 2, 2 3 and spacer rings 2 4, 2 The number of 5 can also be increased accordingly. In addition, the mirror of this creative digital camera is the same as the infrared cut-off filter 26 of 20, which can be omitted, as long as the outer diameter of the spacer ring 25 is designed to a certain value so that it is plugged into the barrel 21, its outer circumferential surface 25m and the barrel The inner circumferential surface 212 of the body 21 is tightly fitted. In addition, the content of the lens barrel 20 of the digital camera used for positioning the distance between the lenses 22 and 23 and the spacer rings 24 and 25 supporting the lenses 22 and 23 can be omitted. As long as the outer diameter of the lenses 22 and 23 is designed to a certain value When the user plug is installed in the barrel 21, the outer circumferential surfaces 22m, 231 and the inner circumferential surface 212 of the barrel 21 fit tightly and can maintain a predetermined distance. The lenses 22 and 23 that can be placed in the barrel 21 of the lens barrel 20 are not limited to round-shaped lenses. They can also accommodate lenses of other shapes such as round lenses, as long as the outer diameter of the lens can match the barrel 21 The size of the inner diameter is the same. The spacer rings 24 and 25 used for positioning can also be other positioning devices, and the shape is not limited to the circular table.

M246635 4. Creation Instructions (5) In summary, this creation complies with the new patent requirements, and a patent application is filed in accordance with the law. However, the above is only a preferred embodiment of this creation. For example, those who are familiar with the skills of this case and equivalent modifications or changes made in accordance with the spirit of this case should be included in the scope of patent application below.

The M246635 diagram on page 10 is a simple illustration. The first picture is a sectional view of the lens barrel of a conventional digital camera. The second picture is an exploded perspective view of the lens barrel of this creative digital camera in one direction. The third picture is a digital camera of this creative digital camera. A three-dimensional exploded view of the lens barrel in the other direction; the fourth image is an assembly drawing of the second image of the lens barrel of the original digital camera; the fifth image is a cross-sectional view of the lens barrel of the original digital camera along the VV line of the fourth image [Description of the main component symbol] Lens barrel 20 Body 21 Top 211 Groove 213 Inner circumferential surface 212 Lens 22 ^ 23 Infrared cut filter, light filter 26 Spacer ring 24, 25 Outer circumferential surface 221 ^ 231 -241, 251

Claims (1)

M246635 V. Patent application range • A lens barrel for a digital camera, which includes a barrel body; multiple lenses, 1 inside the barrel body, each of which includes: · where 'the barrel body includes a Hao tapered inner circle The round face 'closely matches the inner round face of the barrel. Of the plurality of millimeters, the number of which, the number of which, the number of which is 2. The digital camera as described in the item i of the patent application & ^ Regulations 3. The digital camera described in item 2 of the patent application. The lens barrel of the digital camera further includes a plurality of positioning. Brother 4. The digital camera described in item 3 of the patent application. … The positioning device is a spacer ring. Brother 5. The digital phase spacer ring according to item 4 of the scope of patent application is placed between the plurality of lenses. 6. Brother ## The spacer ring of the digital camera described in item 5 of the patent scope #-The spacer ring includes a tapered outer circumferential surface. One of the inner circle of the same body. Among them, its 4 8 7. t! :: Scope of the digital camera described in item 6 of the scope of the camera-the body dagger includes a bottom, and the surface of the bottom has a recess = Shen: The lens barrel of the digital phase y digital camera described in item 7 of the luxury patent scope further includes a filter. Mirror direction: The digital phase described in item 8 of the patent scope is inserted into the groove at the bottom. The mirror of the digital camera described in item 1 of the patent scope of the 1V optical application is the infrared cut-off filter. 'Brother M246635 5. Scope of patent application 11. The lens barrel of the digital camera as described in item 9 of the scope of patent application, wherein the light-transmitting sheet is a color filter. 1) The lens barrel of the digital camera according to item 9 of the scope of patent application, wherein the barrel includes a top portion, and a groove is formed on the top surface. 1 3. The lens barrel of a digital camera according to item 12 of the scope of patent application, wherein the inner circumferential surface of the groove is a tapered circumferential surface. Page 13