Optical sizing instrument

Details Optical sizing instrument Optical sizing instrument

1976-02-17

1978-05-09

Henry, Jon W.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

350173, 350174, 350 35, G01B 1102, G02B 2714

Patent

active

040884104

ABSTRACT:
An optical image splitting apparatus is provided in which an image splitting surface capable of splitting an incident beam into first and second beams by transmission and reflection respectively is so arranged in relation to an uneven number of reflection surfaces that the two beams are reflected through respective paths in the apparatus and leave the apparatus in the same general direction. One of the reflection surfaces is common to the two paths and is deflectable to deflect the two paths in opposite angular directions in order to adjust the distance between the centers of the images formed from the two beams. The apparatus may include a device for blanking out one or other of the beams.

REFERENCES:
patent: 2764055 (1956-09-01), Clemens et al.
patent: 2857804 (1958-10-01), Rantsch
patent: 2911880 (1959-11-01), Rantsch
patent: 3068743 (1962-12-01), Dyson
patent: 3288021 (1966-11-01), Hopkins
patent: 3523736 (1970-08-01), Bottomley
patent: 3652167 (1972-03-01), Smith

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