摘要:
A concave lens as an optical component is made of glass containing 20 to 22% of B2O3, 30 to 40% of La2O3, and 19 to 25% of ZnO, expressed as wt %. The concave lens has a thickness t1 in its center portion of 0.5 mm or less, and a ratio (W/t1) of a diameter W with respect to the thickness t1 of 24 or more. The concave lens can be produced suitably by press forming.
摘要翻译:作为光学部件的凹透镜由包含20〜22%的B 2 O 3,30〜40%的La 2 O 3和19〜25%的ZnO(以wt%表示)的玻璃制成。 凹透镜的中心部的厚度t1为0.5mm以下,直径W相对于厚度t1的比(W / t1)为24以上。 凹透镜可以通过冲压成形适当地制造。
摘要:
A concave lens as an optical component is made of glass containing 20 to 22% of B2O3, 30 to 40% of La2O3, and 19 to 25% of ZnO, expressed as wt %. The concave lens has a thickness t1 in its center portion of 0.5 mm or less, and a ratio (W/t1) of a diameter W with respect to the thickness t1 of 24 or more. The concave lens can be produced suitably by press forming.
摘要翻译:作为光学部件的凹透镜由包含20〜22%的B 2 O 3,30〜40%的La 2 O 3和19〜25%的ZnO(以wt%表示)的玻璃制成。 凹透镜的中心部的厚度t1为0.5mm以下,直径W相对于厚度t1的比(W / t1)为24以上。 凹透镜可以通过冲压成形适当地制造。
摘要:
This is to shed light on a glass composition suitable for a thin lens, and provide a lens (an optical component) manufactured with using the glass. A concave lens as an optical component is made of glass containing 12 to 16% of B2O3, 35 to 44% of La2O3, and 3 to 8% of ZnO, expressed as wt %. The concave lens has a thickness t1 in its center portion of 0.5 mm or less, and a ratio (W/t1) of an external diameter W with respect to the thickness t1 of 24 or more. The concave lens can be produced suitably by press forming.
摘要翻译:这是为了揭示适用于薄透镜的玻璃组合物,并提供使用该玻璃制造的透镜(光学部件)。 作为光学部件的凹透镜由含有12〜16%的B 2 O 3,35〜44%的La 2 O 3和3〜8%的ZnO的玻璃构成,以wt%表示。 凹透镜的中心部的厚度t1为0.5mm以下,外径W相对于厚度t1的比(W / t1)为24以上。 凹透镜可以通过冲压成形适当地制造。
摘要:
An optical element includes: an optically functional part having a first convex surface and a second convex surface intersecting with an optical axis and facing opposite to each other; and an outer peripheral part provided around the optically functional part, the outer peripheral part having a first outer peripheral surface extending from a periphery of the first convex surface and a second outer peripheral surface extending from a periphery of the second convex surface. The first outer peripheral surface and the second outer peripheral surface each are formed to be tapered. A thickness of the outer peripheral part in an optical axis direction is reduced toward a direction moving away from the optical axis.
摘要:
A cemented optical element includes a convex lens and a concave lens. The convex lens has a first convex surface and a second convex surface that are rotationally symmetric with respect to an optical axis. The convex lens has an edge with a thickness of substantially zero. The concave lens has a concave surface bonded to the first convex surface of the convex lens. Preferably, the peripheral portion of the concave lens extends radially outwardly beyond the convex lens to the extent that it is located within an area surrounded by an extension zone of the second convex surface of the convex lens.
摘要:
In a bonded optical element, a second optical element is bonded to a first optical element by forming the second optical element by heating and pressing against the first optical element a second optical element material. The second optical element includes an element body part and a contact part extending from the element body part to be in contact with the outer peripheral face of the first optical element.
摘要:
A second optical element is bonded to a first optical element by forming the second optical element by pressing a second optical element material against the first optical element under a condition free from restriction to the second optical element material in the direction orthogonal to a direction in which the second optical element material is pressed.
摘要:
A second optical element is bonded to a first optical element by forming the second optical element larger in diameter than the first optical element by pressing a second optical element material against the first optical element under a condition free from restriction to at least part of the second optical element material in the direction orthogonal to a direction in which the second optical element material is pressed.
摘要:
In a bonded optical element, a second optical element is bonded to a first optical element by forming the second optical element by heating and pressing against the first optical element a second optical element material. The first optical element is a concave lens. A bonded face of an intermediate portion between a lens portion and an edge portion of the first optical element is substantially in an R shape in section.
摘要:
A contactless rechargeable alkaline secondary battery includes an alkaline secondary battery; a power receiver circuit having receiver coils and a resonance capacitor and adapted to receive AC power via magnetic field resonance, the resonance capacitor connected with the receiver coils L1 to L4; a rectifier circuit adapted to rectify the AC power; a current limiter circuit adapted to limit a charging current flowing from the rectifier circuit to the alkaline secondary battery; and an outer casing configured to be cylindrical in shape, adapted to house the alkaline secondary battery, and provided with a positive terminal and a negative terminal, the positive terminal being connected with a positive pole of the alkaline secondary battery and the negative terminal being connected with a negative pole of the alkaline secondary battery, wherein the power receiver coils are shaped like a sheet of an electric wire wound along a plane.