Foldable telescope for mobile device rear camera

A foldable lens system attached to a protection case or cover that can be used as a telescope for mobile device rear camera. A compact lens system that can be easily stored. The lens holders are self-aligned concentrically to the rear camera through the alignment and recessed structure on the lens holders and the case. This system can be scaled through adding or removing some lens holders.

TECHNICAL FIELD

The present invention relates a foldable lens system attached to a protection case or cover that can be used as a telescope for mobile device rear camera.

BACKGROUND

Currently, mobile device rear cameras are designed so compact that it limits optical zoom. Off-the-shelf external lens are made bulky. For this reason, external lens are required to be stored separately.

SUMMARY OF THE INVENTION

To solve this problem, this present lens system is designed. When unfolded, it can be laid flat in a recessed structure. To use, just simply fold the lens to form a telescope. With appropriately chosen lens type and focus length, a telescope lens system can be achieved.

The present invention has the following beneficial effects over conventional external telescope lens for mobile devices: 1) it can be provided by a compact lens system that can be easily stored. 2) The lens holders are self-aligned concentrically to the rear camera through the alignment and recessed structure on the lens holders and the case. 3) This system can be scaled through adding or removing some lens holders.

Additional Notes

The object of the present invention is to provide a novel telescope system for the mobile device rear camera. Although the present invention have been described in detail for purposes of design, additional modifications and enhancements may be made without departing from the essence and scope of the present invention. Such like, adding or removing a certain number of lens holders to modify the telescope is also possible, however, with some modification to the recessed structure.

DETAILED DESCRIPTION OF THE DRAWINGS

1)FIG. 1andFIG. 2. demonstrate a foldable telescope designed for mobile device rear camera. Multiple lens holders are connected together through connectors. A joint structure includes a connector linked to a small bolt attached to the holders as seen. The holder has an opening in the center. Two magnetic rings are bonded on the two surfaces of the holder. Each holder contains a lens or lens group, or filters, or just nothing. There are alignment structures and magnetic rings between two holders. Each holder has a lens house with a stop layer. The lens group is secured in the lens house. Alignment structures are on the holder's two surfaces. This structure help keeping holders aligned concentrically.

2)FIG. 3shows that lens system is connected to a mobile device protection case or cover. The base of the system is the mobile device protection case or cover. The lens system is connected to a mobile device protection case or cover through a bolt. The lens system can be rotated around the bolt on the case, changing from telescope mode to storage mode. The case is cut out two recessed structures. One is roughly in the shape of the unfolded lens system. The other one is concentric to the rear camera lens with an opening for the camera.

3)FIG. 4shows that a telescope system can be formed by folding the holders. When the lens system is folded, the holders are attracted to each other through the magnetic force. The folded lens system is attached to the other recessed structure lower surface through magnetic force. Alignment structure is used to keep the folded lens system concentric to camera lens.

4)FIG. 5shows that a telescope system can be stored in a recessed structure in the protection case or cover. The unfolded lens system can be laid flat in one of the recessed structures. When laid flat, the lens system outer surface is roughly in the same plane as the protection case or cover outer surface. The unfolded lens system can be secured in recessed structure through magnetic force from the magnetic rings, or from elastic force from the side walls.