A four-lens power layout balances high magnification, long eye relief, and aberration correction in compact display viewing optics.
A transparent sensor and display share one optical axis to combine OVF viewing, digital overlays, and fast capture in a compact camera.
Eye approach sensor switches display output to prevent accidental power saving activation when carrying the camera.
Active LED lighting arrangement surrounds an opaque tube to provide uniform backlighting for viewfinder image field limiting frames.
A meniscus optical member diverges reflected light rays to separate ghost image focus from the display in an eyepiece system.