Lens and lens holding devices
First Claim
Patent Images
1. A lens holding device, comprising:
- a lens barrel having a lens joint surface, a first set of protrusions and/or depressions being located on said lens joint surface; and
a first lens having an optical axis along a given direction and having a first joint surface, a second set of protrusions and/or depressions being located on said first joint surface;
said first set of protrusions and/or depressions being matingly engaged with said second set of protrusions and/or depressions in such a manner that said lens is snappingly secured to said lens barrel against moving along or rotating about said optical axis by the interaction of said first and second set of protrusions and/or depressions, said first lens having a second joint surface on which a third set of protrusions and/or depressions are provided on said second joint surface, and wherein said lens holding device further comprises a second lens having a third joint surface, a fourth set of depressions and/or protrusions being located on said third joint surface, said fourth set of protrusions and/or depressions being matingly engaged with said third set of protrusions and/or depressions in such a manner that said second lens is secured to said first lens and therefore to said lens barrel, said first and second lenses cooperating to form a compound lens.
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Abstract
A lens and a lens holding device make it possible to construct a compound lens or to secure a lens to a lens barrel by providing protrusions and/or depressions on a joint surface or surfaces of a lens and/or a lens contact surface of a lens barrel and interconnecting the protrusions and the depressions. Particularly, the protrusions and/or the depressions are provided with undercut areas and at least one of the protrusions and the depressions to be combined are formed so as to be elastically deformable to prevent them from separating after interconnected.
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Citations
24 Claims
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1. A lens holding device, comprising:
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a lens barrel having a lens joint surface, a first set of protrusions and/or depressions being located on said lens joint surface; and a first lens having an optical axis along a given direction and having a first joint surface, a second set of protrusions and/or depressions being located on said first joint surface; said first set of protrusions and/or depressions being matingly engaged with said second set of protrusions and/or depressions in such a manner that said lens is snappingly secured to said lens barrel against moving along or rotating about said optical axis by the interaction of said first and second set of protrusions and/or depressions, said first lens having a second joint surface on which a third set of protrusions and/or depressions are provided on said second joint surface, and wherein said lens holding device further comprises a second lens having a third joint surface, a fourth set of depressions and/or protrusions being located on said third joint surface, said fourth set of protrusions and/or depressions being matingly engaged with said third set of protrusions and/or depressions in such a manner that said second lens is secured to said first lens and therefore to said lens barrel, said first and second lenses cooperating to form a compound lens. - View Dependent Claims (2, 3)
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4. A compound lens, comprising:
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a first lens having a first joint surface, a first set of protrusions and/or depressions being located on said first joint surface; and a second lens having a second joint surface, a second set of protrusions and/or depressions being located on said second joint surface; said first set of protrusions and/or depressions being matingly connected to said second set of protrusions and/or depressions in such a manner that said first and second lenses are held together by the interaction of said first and second set of protrusions and/or depressions to form said compound lens. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A compound lens, comprising:
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a first lens having a first joint surface, a first set of protrusions and/or depressions being located on said first joint surface; a second lens having a second and third joint surfaces, second and third set of protrusions and/or depressions being located on said second and third joint surfaces, respectively; and a third lens having a fourth joint surface, a fourth set of protrusions and/or depressions being located on said fourth joint surface; said first set of protrusions and/or depressions being matingly connected to said second set of protrusions and/or depressions in such a manner that said first and second lenses are held together by the interaction of said first and second set of protrusions and/or depressions with their respective optical axes being coincident, and said third set of protrusions and/or depressions being matingly connected to said fourth set of protrusions and/or depressions in such a manner that said second and third lenses are held together by the interaction between said second and third sets of protrusions and/or depressions with thier respective optical axes being coincident, whereby said first, second and third lenses form a compound lens. - View Dependent Claims (21, 22)
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23. A lens holding device, comprising:
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(A) a compound lens including; (1) a first lens having a first joint surface, a first set of protrusions and/or depressions being located on said first joint surface; (2) a second lens having a second and third joint surfaces, second and third sets of protrusions and/or depressions being located on said second and third joint surfaces, respectively; and a third lens having a fourth joint surface, a fourth set of protrusions and/or depressions being located on said fourth joint surface;
said first set of protrusions and/or depressions being matingly connected to said second set of protrusions and/or depressions in such a manner that said first and second lenses are held together by the interaction between said first and second sets of protrusions and/or depressions with their respective optical axes being coincident, said third set of protrusions and/or depressions being matingly connected to said fourth set of protrusions and/or depressions in such a manner that said second and third lenses are held together by the interaction between said third and fourth sets of protrusions and/or depressions with their respective optical axes being coincident, whereby said first, second and third lenses form a compound lens; and(B) a lens barrel having a fifth set of protrusions and/or depressions being located thereon, said fifth set of protrusions and/or depressions being matingly connected to a sixth set of protrusions and/or depressions located on said compound lens so as to secure said compound lens to said lens barrel. - View Dependent Claims (24)
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Specification