A portion of the disclosure of this patent document contains material that is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
The present disclosure relates generally to lenses for use with laser modules, and more particularly in one exemplary aspect, to lenses for use with laser modules that eliminate extraneous light reflections from laser modules.
The present disclosure satisfies the foregoing needs by providing, inter alia, a lens for use with a laser module that eliminates the extraneous illuminations present within prior art laser module systems.
In one aspect, a lens for use with a laser module is disclosed. In one embodiment, the lens includes a smaller diameter portion and a larger diameter portion that is larger in size than the smaller diameter portion. The smaller diameter portion is offset by an angle with respect to the larger diameter portion with the angle of offset being configured to eliminate extraneous reflections of light from the laser module.
In one variant, the smaller diameter portion of the protective lens is configured to be positioned over the laser module.
In another variant, the protective lens includes tangent lines that join the smaller diameter portion of the protective lens with the larger diameter portion of the protective lens.
In yet another variant, the protective lens has a uniform thickness for both the smaller diameter portion and the larger diameter portion.
In yet another variant, the angle of offset for the smaller diameter portion with respect to the larger diameter portion is approximately 6°.
In another aspect, a laser module system is disclosed. In one embodiment, the laser module system includes a light-emitting diode lighting apparatus, a laser module that includes a laser-emitting aperture of a first dimension, and a protective lens that is disposed over both the light-emitting diode lighting apparatus and the laser module. The protective lens includes a smaller diameter portion configured to protect the laser module and a larger diameter portion that is larger in size than the smaller diameter portion, the larger diameter portion being configured to protect the light-emitting diode lighting apparatus. The smaller diameter portion of the protective lens is offset by an angle with respect to the larger diameter portion, the angle of offset being configured to eliminate extraneous reflections of light from the laser-emitting aperture of the laser module.
In one variant, the angle of offset for the smaller diameter portion is sized to reflect light off the protective lens outside of the first dimension of the laser-emitting aperture of the laser module.
In another variant, the protective lens is manufactured from one or more of: a transparent sticker, polycarbonate, poly (methyl methacrylate); and glass.
In yet another variant, the first dimension of the laser-emitting aperture is approximately 2 mm and the angle of offset is greater than about 6°.
In yet another variant, the protective lens includes tangent lines that join the smaller diameter portion of the protective lens with the larger diameter portion of the protective lens.
In yet another variant, the angle of offset for the smaller diameter portion of the protective lens is selected as a function of a distance between the laser-emitting aperture and the protective lens and the first dimension of the laser-emitting aperture.
In yet another variant, the first dimension of the laser-emitting aperture is approximately 2 mm and the angle of offset is greater than about 6°.
In yet another variant, the laser-emitting aperture includes a second lens.
In yet another variant, the angle of offset for the smaller diameter portion is sized to reflect light off the protective lens outside of the second lens.
In yet another variant, a size of the second lens is approximately 2 mm in diameter and the angle of offset is greater than about 6°.
Other features and advantages of the present disclosure will immediately be recognized by persons of ordinary skill in the art with reference to the attached drawings and detailed description of exemplary implementations as given below.
The features, objectives, and advantages of the present disclosure will become more apparent from the detailed description set forth below when taken in conjunction with the drawings, wherein:
All Figures disclosed herein are © Copyright 2021 Technomate Manufactory Limited. All rights reserved.
Detailed descriptions of the various embodiments and variants of the apparatus and methods of the present disclosure are now provided. It is noted that wherever practicable similar or like reference numbers may be used in the figures and may indicate similar or like functionality. The figures depict embodiments of the disclosed apparatus (or methods) for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without necessarily departing from the principles described herein.
Referring now to
Referring now to
The precise angle ø for the lens 200 will be dependent upon, inter alia, the aperture size for the laser module 310. For example, an angle of approximately 6° may be adequate for a laser module 310 having an aperture that is roughly 2 mm in diameter. Other laser modules 310 may have apertures that are larger in size (e.g., >2 mm), while other laser modules 310 may have apertures that are smaller in size (e.g., <2 mm). Dependent upon the characteristics of the lens 200 and the aperture size for the laser module 310, the angle may vary from the specific implementation of 6°. For example, with larger aperture sizes for the laser module 310, the angle ø may be 7° or more. As but another non-limiting example, with smaller aperture sizes for the laser module 310, the angle ø may be 5° or less. These and other variants would be readily apparent to one of ordinary skill given the contents of the present disclosure.
In some variants, the lens may consist of a flat lens 110 such as that illustrated in
It will be recognized that while certain aspects of the present disclosure are described in terms of specific design examples, these descriptions are only illustrative of the broader methods of the disclosure and may be modified as required by the particular design. Certain steps may be rendered unnecessary or optional under certain circumstances. Additionally, certain steps or functionality may be added to the disclosed embodiments, or the order of performance of two or more steps permuted. All such variations are considered to be encompassed within the present disclosure described and claimed herein.
While the above detailed description has shown, described, and pointed out novel features of the present disclosure as applied to various embodiments, it will be understood that various omissions, substitutions, and changes in the form and details of the device or process illustrated may be made by those skilled in the art without departing from the principles of the present disclosure. The foregoing description is of the best mode presently contemplated of carrying out the present disclosure. This description is in no way meant to be limiting, but rather should be taken as illustrative of the general principles of the present disclosure. The scope of the present disclosure should be determined with reference to the claims.