GB1325752A - Observational field-glass - Google Patents
Observational field-glassInfo
- Publication number
- GB1325752A GB1325752A GB1325752DA GB1325752A GB 1325752 A GB1325752 A GB 1325752A GB 1325752D A GB1325752D A GB 1325752DA GB 1325752 A GB1325752 A GB 1325752A
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical
- objective
- field glass
- glass
- lamp
- 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
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1325752 Optical apparatus JUNGNER INSTRUMENT A B 30 Oct 1970 51846/70 Heading G2J A field glass for direct optical viewing and for observation of a transformed heat image comprises objective 1, 2, eyepiece 4, and first optical means including two transparent wedges 3, 12 with their oblique faces together, the joint surface 16 being partially reflecting, this surface being disposed substantially in the image plane of the objective, and having a film comprising one or more layers, which deforms on reception of infrared, the film being illuminated by a schlieren optical system placed so that the beam path from a lamp 5 in the field glass, after reflection in the joint surface, coincides with the optical axis of the field glass. Wedge 12 is made of 1R-transparent material e.g. sodium aluminate. The lamp 5 may be controlled by a photo-cell so that, as the surroundings get darker, the light progressively comes on to change over from optical to transformed heat viewing. The first optical means may alternatively be placed at 17 in the image plane of the first part of the objective.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5184670 | 1970-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1325752A true GB1325752A (en) | 1973-08-08 |
Family
ID=10461606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1325752D Expired GB1325752A (en) | 1970-10-30 | 1970-10-30 | Observational field-glass |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1325752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2228096A (en) * | 1989-02-09 | 1990-08-15 | Applied Systems Corp | "electromagnetic imager device". |
-
1970
- 1970-10-30 GB GB1325752D patent/GB1325752A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2228096A (en) * | 1989-02-09 | 1990-08-15 | Applied Systems Corp | "electromagnetic imager device". |
| US5072120A (en) * | 1989-02-09 | 1991-12-10 | Siewick Joseph T | Electromagnetic imager device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |