GB1499755A - Optical magnifiers - Google Patents
Optical magnifiersInfo
- Publication number
- GB1499755A GB1499755A GB1520575A GB1520575A GB1499755A GB 1499755 A GB1499755 A GB 1499755A GB 1520575 A GB1520575 A GB 1520575A GB 1520575 A GB1520575 A GB 1520575A GB 1499755 A GB1499755 A GB 1499755A
- Authority
- GB
- United Kingdom
- Prior art keywords
- eye
- piece
- object plane
- beams
- glass
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
- G02B27/143—Beam splitting or combining systems operating by reflection only using macroscopically faceted or segmented reflective surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/002—Magnifying glasses
- G02B25/004—Magnifying glasses having binocular arrangement
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
1499755 Optical magnifiers MULLARD Ltd 14 April 1975 15205/75 Heading G2J A magnifier for binocular viewing comprises two eye-piece lenses El, E2 and a body B of refractive material having internally reflecting surfaces R1-4 which define two separate axes diverging from a common point in an object plane O (containing a real object or the output end of an image intensifier tube). The body B occupies substantially the whole volume of the two beams between the object plane O and the eye-piece lens L1, L2. The body B may be made from three pieces (as in Fig. 3) or moulded as a single piece of glass. The material of the body may be glass of R.1. equal to 1À7. The diameter of the object may be 18 mm and that of E1, E2 may be 10 mm. Angle 2# may be 28 degrees. A further reflecting surface may be included in the part of the body B which is common to both beams to allow the object plane O to be parallel to the line of sight through the eye-piece lenses L1, L2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1520575A GB1499755A (en) | 1975-04-14 | 1975-04-14 | Optical magnifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1520575A GB1499755A (en) | 1975-04-14 | 1975-04-14 | Optical magnifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1499755A true GB1499755A (en) | 1978-02-01 |
Family
ID=10054890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1520575A Expired GB1499755A (en) | 1975-04-14 | 1975-04-14 | Optical magnifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1499755A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509905A1 (en) * | 1995-03-18 | 1996-09-19 | Drumm Rudolf Dr Med | Single lens system for special medical works |
| GB2307993A (en) * | 1995-12-05 | 1997-06-11 | Christie Miller Ian Russell | Optical device with two reflective surfaces for inserting in partially open book |
| US5680250A (en) * | 1994-11-14 | 1997-10-21 | Salwin Pty. Ltd. | Viewing assembly including prisms and mirrors rotatable about axes transverse to the line of sight |
-
1975
- 1975-04-14 GB GB1520575A patent/GB1499755A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680250A (en) * | 1994-11-14 | 1997-10-21 | Salwin Pty. Ltd. | Viewing assembly including prisms and mirrors rotatable about axes transverse to the line of sight |
| DE19509905A1 (en) * | 1995-03-18 | 1996-09-19 | Drumm Rudolf Dr Med | Single lens system for special medical works |
| GB2307993A (en) * | 1995-12-05 | 1997-06-11 | Christie Miller Ian Russell | Optical device with two reflective surfaces for inserting in partially open book |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |