Nikon new patent surfaced over the web, a new 300mm F2.8 Lens with built-in low pass filter, In general optical low-pass filters (OLPF) are used to eliminate color Moire fringes in images,
Patent details translated by google
Self-interpretation and summary, Patent Document
- Patent Publication No. 2012-128155
- 2012.7.5 Release Date
- 2010.12.15 filing date
- OLPF (optical low-pass filter)
- Reduce the false color and moiré
- Resolving power of high-frequency part is degraded
- And incorporated into the camera body, lens performance can not be achieved at all
- Interchangeable lenses
- Having a residual aberration
- Nikon patents
- Having a body side and the lens side OLPF
- Resolving power lens to optimize the separation width of the birefringent plate (OLPF)
- Incident light is separated into two beams
- To be in the opposite direction, or the same direction separated
- Lens
- F = 293.8mm focal length
- Angle of 8.3 deg.
- Fno. 2.88
- Lens Construction 12 elements in 9 groups sheet
- 2.8μm pixel pitch corresponding
- OLPF the lens
- Six group lens configuration 2
- 11.3μm pitch corresponding pixel
See more – Nikon Patent News
src – egami (japanese website)
