Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1114124A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kapella Ltd
Original Assignee
Kapella Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kapella LtdfiledCriticalKapella Ltd
Priority to GB1114124ApriorityCriticalpatent/GB231028A/en
Publication of GB231028ApublicationCriticalpatent/GB231028A/en
G02B13/00—Optical objectives specially designed for the purposes specified below
G02B13/20—Soft-focus objectives
Abstract
231,028. Warmisham, A., and Kapella, Ltd. May 6, 1924. Drawings to Specification. Lenses.-Photographic objectives have, one of the surfaces formed as a conical refracting surface for the purpose of introducing a definite amount of spherical aberration and in such a manner that the circles of confusion are without a relatively bright nucleus. Such conical surface may be part of a detachable element or in corporated with a spherical surface as an integral part of an objective.
GB1114124A1924-05-061924-05-06An improved diffusing device for lenses
ExpiredGB231028A
(en)
Glasses or protective lenses of double visuality against dazzling by light or bright flashes. (Machine-translation by Google Translate, not legally binding)
Observation apparatus of photographic positives, postcards, engravings, etc., giving the vision of relief and allowing combinations of colored lighting