TWM496783U - A stand style convenient rear lens cap making it much easier to either take out or put back the lens when interchanging cameras lenses - Google Patents

Abstract

The inconvenience and inefficiency of changing lenses when using a SLR(now DSLR) kinds of interchangeable lens camera is always the pain of either professional or amateur photographers. It might cause missing some important or precious moments when needing to interchange the lenses just because of the inconvenience. This novel stand style rear lens cap could make interchanging lenses become a very quick and easy job without needing to cover and release the traditional rear lens caps of the detached and changed lenses respectively. By using such novel lens caps you can just change lenses as quickly as you wish and no more important shuts would be missed again. As a result the interchangeable lens camera system would become more feasible and easy to use than ever and be more widely accepted by consumers as well.

Description

Quick access to the lens for easy replacement of the camera lens seat lens rear mirror cover

Camera accessory equipment

Traditional lens rear mirror cover, commercially available camera backpack, store window display stand

The traditional process of replacing the camera lens, the rear mirror cover has always been a headache. In order to protect the lens from exposure to scratches and dust, the lens removed after replacing the lens must first find out the rear lens cover that was removed before resetting, then remove the lens to be replaced, and then unscrew the mirror cover. You have to find the right place (to avoid dust and not to find it) to install the lens on the body. In the process, because the cover is opened and unscrewed, the mirror cover has two hands and is used - a hand-held mirror body and a hand-rotating mirror cover, which are generally suspended from the body of the camera body and thus slosh, accidentally easily colliding with the hand-held lens or other Something causes damage. The most important photosensitive element of the modern digital body and the rear lens of the replaced lens are directly exposed during the mirror changing process. The longer the time spent, the higher the chance of the photosensitive element and the lens entering the dust, and the probability of missing the important picture. The higher the height. Therefore, the inconvenience of replacing the lens is indeed one of the important reasons why many consumers regard the use of the interchangeable lens camera as a fear.

The rear lens cover of the new type lens is used to solve the problem caused by the rear lens cover of the conventional lens when replacing the lens. Annoying, the rear mirror cover and the base concept that can support the mirror body are combined into one, and the lens is engaged with a very simple mechanism. When the base is properly sized, the lens can be inserted into the base of the camera backpack. Fixed, using the power of the base to clamp the support at the bottom, you can take out the lens directly from the base or put it back with one hand in an instant. (The other hand can hold the body to remove the lens and install it as fast as possible. The new lens), the long-term task of replacing the lens will become easy, fast and safe.

The rear lens cover of the new type of lens is still faster and more convenient than the conventional rear lens cover, even if it is used for the camera back cover, mainly without holding the mirror in one hand, and then using the other hand to open or close the mirror cover. You have to find a place to store the rear mirror cover or retrieve it. Instead of leaving the table, you can directly access the lens, so it can completely replace the traditional lens rear mirror cover.

1‧‧‧seat

2‧‧‧ horizontal section

3‧‧‧Central opening

4‧‧‧Central opening depth

5‧‧‧The rear end of the lens

6‧‧‧The height of the rear projection

7‧‧‧ Mirror end width

8‧‧‧ lens

9‧‧‧The fixed length side of the camera backpack

10‧‧‧ Camera backpack with adjustable length side

11‧‧‧Seat fixed length side

12‧‧‧Room change length side

13‧‧‧Central opening size

14‧‧‧After the end of the lens

15‧‧‧Flexible material

16‧‧‧ threaded teeth

17‧‧‧Traditional lens rear mirror cover

18‧‧‧ camera backpack

Figure 1: Schematic diagram of the combination of lens and seat lens rear mirror cover

Figure 2: Lens and seat lens rear mirror cover used in the camera backpack

Figure 3: Structure of the lens and seat lens rear mirror cover 1

Figure 4: Schematic diagram of the combination of lens and seat lens rear mirror cover 2

Figure 5: The lens and the seat lens rear mirror cover combined mechanism 3 way a structure diagram

Figure 6: The lens and the seat lens rear mirror cover combined mechanism 3 way b structure diagram

In order to achieve the concept of the rear mirror cover and the base, the seat lens cover body of the present type adopts a seat higher than the rear end of the lens (Fig. 5, that is, the interface structure of the lens combined with the body). Figure 1)), the circumference of the platform can be any shape, the upper end needs to provide a horizontal part (Figure 1 2), with the camera backpack can be used to shape the square platform (Figure 1 / lower top view), so as to be inserted and fixed in the backpack The bottom of the inner grid (Figure 2). Generally, the width of one side of the camera bag is fixed (Fig. 2) and the other side is adjustable (Fig. 210). Therefore, at least one side of the seat is equal to the fixed width of the bag (Fig. 2, 11 can be slightly larger). Eli fixed), the width of the other side (Figure 2 12) is best to match the maximum diameter of the lens body to occupy the smallest space in the backpack (refer to the discussion of other discussion 1). The center of the upper part of the upper end of the table has an opening through which the protruding portion of the rear end of the lens passes (Fig. 1 3, the size of the protruding portion is different according to different specifications of the camera system), and the opening diameter is smaller than the width of the end of the lens body ( Figure 1 7), the opening depth (Figure 1 4) is greater than (at least equal to) the maximum height of the protruding part of the rear end of the lens (Figure 1), so that the lens can stand on the platform (because most of the lens rear end protrudes Some of the bottommost structures are partially non-in the same plane, so this part must be vacated for the lens to stand upright. In addition, the seat is used for backpacks or other places such as moisture-proof cabinets, table tops, etc., and the bottom must be closely attached to a plane to form a closed end at the other end of the opening, so that the other end of the central opening of the seat can be closed (Fig. 1).

The combination of the pedestal and the lens can have the following mechanisms and corresponding implementations.

1. The lens just hangs on the platform through the central opening, and the lens does not really combine with the platform.

Method: The size of the central opening 13 is slightly larger than the diameter 14 of the protruding end of the lens (Fig. 3). When the lens is engaged with the platform, it is loose (non-tight) and has no resistance at all. The lens is the fastest.

Applicable: Replace the temporary storage platform of the lens, which can be placed in one of the backpacks for the replacement mirror The head of the fast stop.

Advantages: It is completely effortless to remove the lens and put it directly into the seat. It is most time-saving to replace the lens.

Disadvantages: The lens and the platform are not really combined. More than one degree of shaking will cause the lens to fall, but it will not cause lens damage in the backpack, but it will increase the risk of the lens being exposed to dust after the lens.

2. There is a device on the inner wall of the central opening to make the lens and the table stand tightly and not to sway.

Method: One way is to use an elastic material on the inner wall of the central opening 3 and the central opening size 13 is slightly smaller than the diameter 14 of the lens end protruding portion (Fig. 4). When the lens is combined with the seat, the lens end protruding portion 5 will squeeze the opening inner wall. Elastic material 15 (such as rubber, foam, etc.) keeps the lens tight and stabilizes on the platform without shaking. The elastic material 15 can be machined into grooves or scores to increase the frictional grip and enhance the strength of the lens.

Applicable: The lighter and shorter the lens is more suitable, it is not easy to be loosened by the shaking and the platform; the lens that is too heavy or too long is more suitable for the bonding mechanism 3 .

Advantages: It is as fast and easy as picking and dropping the lens, and it does not shake after swinging back. Unless it is intentionally shaken violently, it is not easy to loosen the seat under normal conditions. (It may be possible to use the backpack when it falls or the lens is too heavy)

Disadvantages: It is not a disadvantage. It is only necessary to press the lens back and forth with the most easy to pick and place lens. It must overcome the friction of the inner wall extrusion, but it is still very fast and easy. Stunning the lens is still possible to loosen.

3. The inside of the central opening has the same thread as the original lens of the original lens. The lens can be fixed by the lens. On the platform.

Mode a: The thread portion 16 is directly formed on the inner wall of the central opening 3 of the seat (Fig. 5).

Applicable: Because the size of the rear mirror interface of each manufacturer is different from the screw structure, only the specific brand lens that meets the screw and size specifications can be applied.

Advantages: Because the screw is locked, the lens can be fixedly combined with the platform. Under no circumstances will it be shaken. Even if it is shaken violently or even when using the backpack, the lens that is too heavy will be fine.

Disadvantages: Compared with the combination mechanism 1 which is the easiest to pick and place the lens, the swingback and the take-out lens have one more rotation locking or loosening action, and the fashion must be turned to the angle before being placed. However, these extra actions have little effect on the overall operation.

Method b: The conventional lens rear cover 17 of each manufacturer is directly used for being combined with the central opening 3 of the seat, and the central opening 3 of the seat becomes the receiver of the rear lens cover 17 of the conventional lens, which is equivalent to a. State (Figure 6).

Applicable: Because even the same system specifications such as 135 cameras, the outer diameter and depth of the traditional lens back cover are different, and can not be replaced by the same central opening specification for the mutual replacement of each other. The central opening size can only be matched with the specific specifications of the traditional lens rear mirror cover of each manufacturer and directly bonded (Figure 6).

Advantages: same way a.

Disadvantages: same way a.

Other discussions:

1. In order to be able to cooperate with the camera backpack, the outer edge of the platform preferably has a side width that is the same as or slightly larger than the fixed width side of the camera backpack (for example, the 135 camera has the most common lens diameter except for special lenses). The thickness is more than 80mm, so the fixed width of the compartment is generally about 80mm, because the extra part can squeeze the bubble partition of the backpack. The other side of the platform can be close to the width of the thinner diameter of the common mirror (such as the 135 camera is about 60 or so close to 70mm), so that the platform can be adjusted to match the foam when it is placed in the backpack compartment. The partitions allow the most efficient use of the compartments in the backpack.

2. The seat is often carried in a backpack and must be able to be stuck at the bottom of the backpack, so the material is light and has a certain rigidity, such as the formation of a rigid plastic shell such as styrofoam or hollow.

1‧‧‧Block seat (seat type lens rear mirror cover body)

3‧‧‧Central opening

9‧‧‧The fixed length side of the camera backpack

10‧‧‧ Camera backpack with adjustable length side

11‧‧‧Seat fixed length side

12‧‧‧Room change length side

Claims (6)

A seat type lens rear mirror cover comprises a table, the upper end of the table has a horizontal plane, the horizontal mask has a central opening, and the central opening is sized to allow the protruding portion of the rear end of the lens to pass through and is smaller than the width of the end of the lens body, and the depth of the central opening It is greater than or equal to the maximum height of the protruding portion of the rear end of the lens, and the inner wall of the central opening has a device corresponding to the end of the lens. The seat lens rear mirror cover according to claim 1, wherein the device corresponding to the inner wall of the central opening and the end of the lens is made of an elastic material and the central opening is formed to be slightly smaller than the diameter of the protruding portion of the rear end of the lens. The seat lens rear mirror cover according to claim 1, wherein the device corresponding to the inner wall of the central opening and the end of the lens is a screw corresponding to the protruding portion of the rear end of the lens, and the size of the central opening is the same as that of the conventional lens rear cover. The opening size is the same. The seat lens rear mirror cover according to claim 1, wherein the device corresponding to the inner wall of the central opening and the lens end is a conventional lens rear mirror cover. The seat lens rear mirror cover of claim 1, wherein the base has a side length equal to or slightly larger than a fixed width of the camera backpack. The seat lens rear mirror cover according to claim 1, wherein a width of the central opening of the horizontal plane of the platform is not larger than an outer diameter of the rear lens cover of the conventional lens.