GB190618525A - Improvements in Double Objectives - Google Patents

Improvements in Double Objectives

Info

Publication number
GB190618525A
GB190618525A GB190618525DA GB190618525A GB 190618525 A GB190618525 A GB 190618525A GB 190618525D A GB190618525D A GB 190618525DA GB 190618525 A GB190618525 A GB 190618525A
Authority
GB
United Kingdom
Prior art keywords
component
concave surface
pair
facing surfaces
weaker
Prior art date
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
Inventor
Moritz Von Rohr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190618525A publication Critical patent/GB190618525A/en
Expired legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)

Abstract

18,525. Rohr, M. von. Aug. 18. Lenses.-Relates to double objectives of the type in which each of the two-lens components possesses a dispersive pair of facing surfaces of unequal curvatures, and in which the flint-glass lens occurs on the inner side with the non-concave surface turned inwards. For the better correction of coma, the component from which the parallel rays emerge 'has a weaker pair of facing surfaces r<6>, r<7> and a weaker curvature of the non-concave surface r<5> than the corresponding faces of the other component. Constructional data are given in the Specification.
GB190618525D 1906-08-18 1906-08-18 Improvements in Double Objectives Expired GB190618525A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190618525T 1906-08-18

Publications (1)

Publication Number Publication Date
GB190618525A true GB190618525A (en) 1907-07-04

Family

ID=32487159

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190618525D Expired GB190618525A (en) 1906-08-18 1906-08-18 Improvements in Double Objectives

Country Status (1)

Country Link
GB (1) GB190618525A (en)

Similar Documents

Publication Publication Date Title
GB190618525A (en) Improvements in Double Objectives
GB190306162A (en) An Improvement in Eyeglasses.
US943105A (en) Teleobjective.
CA87688A (en) Rimless eyeglass, etc.
GB190604523A (en) Improvements in Photographic Tele-objectives.
GB191417820A (en) Improvements in Multi-focal Lenses.
CA111699A (en) Bifocal lens
GB190411108A (en) Improvements in Photograhic Objectives.
GB190629446A (en) Improvements in Photographic Objectives
GB190616839A (en) Improvements in the Manufacture of Bi-focal Lenses.
CA91792A (en) Spectacle
CA92209A (en) Bifocal lense
GB190715461A (en) Improvements in Eyeglasses.
US567326A (en) Lander
US803908A (en) Lens for eyeglasses.
CA91944A (en) Eyeglass
GB191214192A (en) A Light Refractor or Diffuser.
GB190911580A (en) Improvements in and relating to Pince-nez and Spectales.
GB190607661A (en) Improvements in certain Photographic Lenses.
GB190423888A (en) Improvements in or connected with Optical Lanterns.
CH33808A (en) Multifocal lens for eyeglasses, eyeglasses, etc.
GB190622662A (en) Improvements in Pince-nez or Clip Eye Glasses.
GB189404058A (en) Improvements in or connected with Eye-glasses or Pince-nez.
CA90993A (en) Eyeglass frame
ES45622A3 (en) Improvements in bifocal lenses.