Description
The Nikon Diaphot is an inverted phase contrast microscope developed for tissue culture and photomicrography applications. It features a Siedentopf-design binocular head built onto a die-cast body, inclined at 45 degrees with a single internal reflecting surface to reduce glare and maximize image contrast. A focusing Bertrand Lens is built into the binocular body for fast alignment of the phase annular ring. The stage sits slightly below the binocular head, allowing easy access to and viewing of the specimen area, with coaxial coarse and fine focusing controlling the nosepiece while the stage itself remains stationary. The optical design was built for the shortest, most efficient light path, with a turret assembly incorporating a focusable Bertrand lens, photomask reticle, and dark slide.
Features:
- Siedentopf binocular head — 45-degree inclined viewing with built-in Bertrand lens for phase ring alignment
- Inverted tissue culture design — Stage positioned for unobstructed specimen access and manipulation during observation
- CFWN 10x/20 eyepieces — Widefield eyepieces as fitted to this unit
- Coaxial coarse/fine focus — Controls nosepiece movement, keeping the stage stationary
- Built-in turret assembly — Includes dark slide and photomask reticle for photomicrography
- Photomicrography-ready optical path — Photographic capability built directly into the optical system
- Die-cast body construction — Durable stand designed for heavy lab use
Specifications:
- Model: Diaphot (original series)
- Eyepieces: CFWN 10x/20
- Head Type: Siedentopf binocular, 45° inclined
- Optical Path: Single reflecting surface design
- Era: Mid-1980s
- Country of Origin: Japan
