OPTICAL IMAGE CAPTURING SYSTEM
An optical image capturing system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order from an object side. The optical imaging system satisfies Pnu [10 -1 mm ] < = 30 where Pnu is sigma Pnui where i = 1, 2,..., 7, Pnu...
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| Zusammenfassung: | An optical image capturing system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed in order from an object side. The optical imaging system satisfies Pnu [10 -1 mm ] < = 30 where Pnu is sigma Pnui where i = 1, 2,..., 7, Pnui is 1/(vti * fi), vti is [DTni/(ni-1)-CTE < i >]-1, fi is an effective focal length of the i-th lens, ni is a refractive index of the i-th lens, DTni is a rate of change of the refractive index of the i-th lens according to temperature (dni/dT), and CTE < i > is a coefficient of thermal expansion of the i-th lens.
一种光学成像系统，包括从物侧依次设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜。光学成像系统满足|Pnu|[10-6℃-1mm-1]≤30，其中，Pnu是∑Pnui，其中，i＝1、2、...、7，Pnui是1/(vti·fi)，vti是[DTni/(ni-1)-CTEi]-1，fi是第i透镜的有效焦距，ni是第i透镜的折射率，DTni是第i透镜的折射率根据温度的变化的速率(dni/dT)，以及CTEi是第i透镜的热膨胀系数。 |
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