LENS MODULE
First Claim
1. A lens module, comprising:
- a barrel;
a first lens;
a first spacer ring;
a second lens having an effective aperture A;
a second spacer ring having an inner diameter B; and
a third lens having an effective aperture C;
wherein, the first lens, the first spacer ring, the second lens, the second spacer ring, the third lens and the infrared cut-off filter are coaxially assembled within the barrel, along an axial direction of the barrel in that order;
the first spacer ring is sandwiched between the first lens and the second lens, the second spacer ring is sandwiched and located between the second lens and the third lens;
the inner diameter B of the second spacer ring is smaller than the effective aperture C of the third lens and greater than the effective aperture A of the second lens.
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Accused Products
Abstract
A lens module comprises a barrel, a first lens, a first spacer ring, a second lens having an effective aperture A, a second spacer ring having an inner diameter B, and a third lens having an effective aperture C. The first lens, the first spacer ring, the second lens, the second spacer ring, the third lens and the infrared cut-off filter are coaxially assembled within the barrel, along an axial direction of the barrel in that order. The first spacer ring is sandwiched between the first lens and the second lens, the second spacer ring is sandwiched and located between the second lens and the third lens. The inner diameter B of the second spacer ring is smaller than the effective aperture C of the third lens and larger than the effective aperture A of the second lens, so as to satisfy the condition of C>B>A.
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Citations
12 Claims
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1. A lens module, comprising:
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a barrel; a first lens; a first spacer ring; a second lens having an effective aperture A; a second spacer ring having an inner diameter B; and a third lens having an effective aperture C; wherein, the first lens, the first spacer ring, the second lens, the second spacer ring, the third lens and the infrared cut-off filter are coaxially assembled within the barrel, along an axial direction of the barrel in that order;
the first spacer ring is sandwiched between the first lens and the second lens, the second spacer ring is sandwiched and located between the second lens and the third lens;
the inner diameter B of the second spacer ring is smaller than the effective aperture C of the third lens and greater than the effective aperture A of the second lens. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lens module, comprising:
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a barrel; a lens base coaxially and rotatably assembled to one end of the barrel; a first lens; a first spacer ring; a second lens having an effective aperture A; a second spacer ring having an inner diameter B; and a third lens having an effective aperture C; wherein, the first lens, the first spacer ring, the second lens, the second spacer ring, the third lens and the infrared cut-off filter are coaxially assembled within the barrel, along an axial direction of the barrel toward the lens base in that order;
the first spacer ring is sandwiched between the first lens and the second lens, the second spacer ring is sandwiched and located between the second lens and the third lens;wherein, the inner diameter B of the second spacer ring is smaller than the effective aperture C of the third lens and greater than the effective aperture A of the second lens. - View Dependent Claims (9, 10, 11, 12)
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Specification