1. Field of the Invention
The present invention generally relates to the field of containers for carrying cameras, optical lenses, and other photographic equipment. More particularly, the present invention relates to an interchangeable lens canister that affords protection against high impacts, high static force loads, extreme environmental temperatures, and water penetration.
2. Description of the Related Art
Photographic cameras that support interchangeable lenses are the most common used among professional and semi-professional photographers. The ability to change the optical lens mounted to the camera body simply and quickly is the key to the utility of the interchangeable lens/camera system. Because a particular photographic task may require a particular photographic lens design, the user (photographer) can easily change the optical lens of the camera unit to best satisfy the optical requirement for the particular photographic task. Effectively, the interchangeable lens camera system allows the photographer to be able to meet a wide array of photographic tasks with a single camera body (and the correct interchangeable lens unit) as opposed to multiple cameras with fixed lens designs.
Due to the high utility provided by interchangeable lens camera systems, most photographers carry a single camera body and multiple interchangeable lens units to meet a wide array of photographic tasks. It is typical for the advanced photographer to have more money invested in interchangeable lenses than in the individual camera body, since typically camera bodies are replaced or upgraded while optical lenses are kept to meet future photographic needs.
Many camera case designs exist to carry and protect the camera unit and its mounted camera lens. Cases designed to carry individual (unmounted) camera lenses also exist. Most lens cases are either a) rectangular in shape, and/or b) composed of soft or semi-rigid material. Very few lens cases offer protection against high impacts, high static force loads, extreme environmental temperatures, and/or water penetration.
Typically, photographers carry their complete photo kit (camera body, multiple lenses, electronic accessories, etc.) in one large dedicated protective bag or hard case. This system works well in protecting all equipment simultaneously and equally. The downsides to this method for transporting equipment are a) the case or bag makes compromises in protecting each individual piece of equipment, b) it is difficult to make large “photographic” style bags subtle and low-key, c) carrying a large photographic bag prevents the user from carrying other required gear, d) photographic bags may not be adequate for transporting other equipment since they are specialized for a single purpose.
There are many photographers who must be able to carry other equipment into the field. This type of user may include outdoor, adventure, travel, and/or journalistic photographers to name a few. For these users, carrying a large, single-function camera bag is not an option. While on assignment, these users must be able to carry and protect a few pieces of photo equipment (mainly a camera body and spare lenses) and other non-photo related equipment in a single bag (backpack, luggage, or similar) designed for multiple purposes, not uniquely designed to transport and protect photographic equipment. These types of photographers do not have the luxury of needing to carry only photo equipment, and thus must accommodate professional and personal gear in their personal luggage.
A dedicated rigid interchangeable lens case allows the photographer to carry a spare interchangeable lens in a single small well-protected package. With a dedicated spare interchangeable lens case, the photographer can have the choice to carry as few or as many interchangeable lenses as they desire. This, in turn, allows the photographer to carry any necessary amount of luggage, rather than a single large photo bag.
Depending on the size of each lens and the size of the interchangeable lens case, either multiple lenses can be stored in a single interchangeable lens case or each lens can be transported in individual smaller interchangeable lens cases. The rigid interchangeable lens case (with lens) can then be stored in personal baggage that does not have to be designed or dedicated to protecting and transporting photographic equipment, thus allowing the user to have more flexibility in baggage and equipment selection. With this dedicated lens case approach the photographer can carry only the protective case(s) he or she needs in a non-dedicated photo bag, yet not compromise on protection of the interchangeable lens unit(s).
Lens cases relevant to this disclosure are discussed in the following U.S. patents, which are hereby incorporated by reference: U.S. Pat. Nos. 4,172,485; 4,177,894; 4,383,565; 4,549,589; 5,199,563; and 5,373,980.
Many aspects of the present invention can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present invention. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Non-limiting embodiments of the present invention utilize a lens case that is especially suited to transport and protect optical photographic lenses of various sizes and configurations and provide an alternative to carrying optical lenses in a large semi-rigid or soft dedicated photography bag. The lens case is waterproof and further provides a very high level of protection of its contents from environmental temperatures. In addition, the lens case is designed to protect against static force loads, cushion the lens against impacts, resist high impacts, and prevent unintentional opening of the lens case during its transport or storage.
Referring to the drawings, wherein like reference numerals represent like parts throughout the various drawing figures,
With reference to
It should be understood by one of ordinary skill in the art that the outer rigid casing 22 can be constructed from any other suitable rigid material that is durable, tough, water-resistant, and relatively lightweight. Such materials include, but are not limited to, injection molded plastic, carbon fiber resin, or other metal or non-metallic alloy.
External surface 24 and the internal surface 25 of the outer rigid casing 22, as well as the inner liner 26 are shown, in the non-limiting configurations of
With continuing reference to
Referring back to
In
Referring to
In addition, the top side of the lid cap assembly 40 may employ various machined markings or etchings B, CW, and CCW. In a non-limiting embodiment of
The thread ring 42 of the lid cap assembly 40 is constructed from injection molded and machined acrylic plastic. Those of skill in the art will appreciate that any suitable material alternative is contemplated as being within the spirit and scope of the invention. The underside of the lid cap assembly has a circular pocket 47 to accommodate the bonding and assembly of the thread ring 42.
The lid cap assembly 40 including the thread ring 42 are permanently bonded with epoxy 90 and reinforced with fasteners 48. In a non-limiting embodiment, the fasteners 48 in
Referring to
When the lid cap assembly 40 is engaged with the mouth member 30, the lid cap assembly 40 may be rotated to the closed position, compressing the gasket 50 against the external surfaces of the lid cap assembly 40 and the mouth member 30, as shown in
The mouth member 30 captures the lid cap assembly 40 with a rotational motion provided by the user. As the user rotates the lid cap assembly 30 clockwise, the lid cap assembly 30 will translate downward, towards the body shell 20 until the gasket 50 is adequately compressed and the lens case 10 is closed. The flange 34 provides a smooth surface for the gasket 50 to sit and seal, via compression from the downward translation of lid cap assembly 30. As a result, a water-proof seal between the interior and exterior of the lens case 10 is created.
With continuing reference to
Referring to
With the machines screws 62 acting as biasing members and engaged into the stop notches 36, the lid cap assembly 40 is restricted or prevented from rotating in a counter clockwise direction, thus locking the lid cap assembly 40 in the closed position. Compression springs 64 are mounted axially around the body of the machine screw 62, applying a load on the back side of the head of the machine screw 62. As a result, the springs 64 prevent the screws 62 from backing out and off from the lid assembly 40.
In non-limiting embodiment of
As shown in
Referring to
Similar to the lid cap assembly 40, the external surface of the base end cap 70 may include various machined markings B, as shown in
Referring to
In the examples shown in
By nature, the visco-elastic materials 46 and 76 are very compliant. Thus, a single foam thickness will cover a relatively large set of lens L dimension. In addition, for encasing optical lenses L that are shorter in length (See
The visco-elastic materials 46 and 76 are composed of a 1-2 inch thick circular piece of visco-elastic polyurethane foam. The properties of this specific type of polyurethane foam enable the carried lens L to be very well isolated from shock and vibrations applied to the lens case 10.
When the lens case 10 is completely closed, the soft visco-elastic materials 46 and 76 compress against and around the top and bottom end of the lens L. Both materials 46 and 76 mold to the external end shape of the stored optical lens L, thus suspending the lens L and preventing any lateral or side-to-side movement of the lens L within the case 10. Visco-elastic materials 46 and 76 alleviate the need for lens L manufacturers to include custom foam supports that are specifically made for their commercially available lenses L. The lateral sides of the lens L are held away from the sides of the lens case 10 where there is a higher likelihood of external impact forces or static loads. Also, placement and removal of the lens L in and out of lens case 10 is fast and easy, since the user does not have to be concerned with bulky foam padding or intrusive foam materials along the lateral sides of the lens case 10.
The visco-elastic materials 46 and 76 suspend the lens L at the lens' L strongest points (i.e., the front end of the lens L and the mounting point to the camera body), forming a pocket of air (not shown) around the outer surface of the lens L. The pocket of air further inhibits moisture from reaching the lens L because there is no material for moisture to wick through. Also, the pocket of air contributes positively to thermally insulating the lens L, since air is such a good insulator. Providing a pocket of air facilitates storing a wider variety of lens L, e.g. some lenses L may have projections or bulges along their length with which padding would interfere.
With reference to
In a non-limiting embodiment, the strap 80 may be stretched over (not shown) the lid cap assembly 40 to further compress the lid cap assembly 40 to the body shell 20. In this non-limiting embodiment, strap 80 extends taut along the length of the lens case when stretched over the top of the lid cap assembly 40 and can serve as a handle during transport.
From the foregoing description it will be apparent that modifications can be made to the protective lens case 10 without departing from the teachings of the invention.
The instant invention may be embodied in other forms or carried out in other ways without departing from the spirit or essential characteristics thereof. The present disclosure is therefore to be considered as in all respects illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and all equivalency are intended to be embraced therein. One of ordinary skill in the art would be able to recognize equivalent embodiments of the instant invention and be able to practice such embodiments using the teaching of the instant disclosure and only routine experimentation.
The present application is a Non-Provisional of and claims the benefit of priority to U.S. Provisional application No. 61/286,732, filed on Dec. 15, 2009. The disclosures of both applications are hereby incorporated by reference.
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3401791 | Stott et al. | Sep 1968 | A |
3411655 | Gaines | Nov 1968 | A |
3531644 | Koster | Sep 1970 | A |
3819081 | Runte | Jun 1974 | A |
4279339 | Gotter | Jul 1981 | A |
4964529 | Houston | Oct 1990 | A |
5779031 | Moraine et al. | Jul 1998 | A |
20080000781 | Noel Du Payrat et al. | Jan 2008 | A1 |
Number | Date | Country | |
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20110139643 A1 | Jun 2011 | US |
Number | Date | Country | |
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61286732 | Dec 2009 | US |