CN201582675U - Telephotograph optical assembly type precision approach path indicator - Google Patents
Telephotograph optical assembly type precision approach path indicator Download PDFInfo
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- CN201582675U CN201582675U CN2010200033869U CN201020003386U CN201582675U CN 201582675 U CN201582675 U CN 201582675U CN 2010200033869 U CN2010200033869 U CN 2010200033869U CN 201020003386 U CN201020003386 U CN 201020003386U CN 201582675 U CN201582675 U CN 201582675U
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- convex lens
- light
- colour filter
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Abstract
The utility model belongs to the field of aerotechnics, and particularly relates to a telephotograph optical assembly type precision approach path indicator, which comprises a light source device, a color filter, a concave lens, a convex lens and a lamp box. The light source device, the color filter, the concave lens and the convex lens are all located inside the lamp box, the lower edge of the color filter, the center of the concave lens and the center of the convex lens are located on the same main optical axis, a distance between the concave lens and the convex lens is smaller than focal length of the convex lens and larger than the sum of focal lengths of the concave lens (negative focal length) and the convex lens, the concave lens and the convex lens form a telephotograph optical assembly with long focal length, the color filter is located at a combined focal point position of the telephotograph optical assembly, and light emitted from the lower edge of the color filter is parallel to the main optical axis after passing through the concave lens and the convex lens. The telephotograph optical assembly type precision approach path indicator is simple in structure and novel in design, is long in focal length, high in defocusing amount allowance and easy to realize trisection angle requirements, and resolves difficult problems that a common single-lens type precision approach path indicator is high in processing precision, difficult in optical path adjustment and difficult to realize trisection angle requirements.
Description
Technical field
The utility model belongs to the aeronautical technology field, is specifically related to a kind of long-shot optical-train type precision approach course indicator lamp.
Background technology
Precision approach course indicator light can provide be higher than approach path, a little higher than approach path, at approach path, slightly be lower than approach path, be lower than the gradient index signal of five kinds of approach paths of approach path, can help aircraft can keep again advancing the nearly gradient accurately when keeping advancing nearly direction accurately, be a kind of important visual navigation channel indication mechanism in the instrument-landing-system of modern airport.
General precision approach course indicator light adopts the structure of single convex lens more, for reaching red white transition region angle in International Civil Aviation Organization's standard less than 3 minutes requirement, colour filter should accurately be installed in the focal position of convex lens, the defocusing amount tolerance of colour filter is generally less than 0.5mm, this requirement on machining accuracy for machinery and lens is very high, the light path adjusting must be very trickle during prototype debug, thereby 3 fens angles require to become difficult problem the most scabrous in the precision approach course indicator light exploitation.
Summary of the invention
The purpose of this utility model is to overcome general simple lens type precision approach course indicator light requirement on machining accuracy height, light path and regulates difficulty, 3 fens angles and require the shortcoming that is difficult to realize, provides that a kind of long-focus, defocusing amount tolerance are big, 3 fens angles require the long-shot optical-train type precision approach course indicator lamp that is easy to realize.
The long-shot optical-train type precision approach course indicator lamp that the utility model proposes comprises light supply apparatus 1, colour filter 2, concavees lens 3, convex lens 4 and lamp box 5.The inside of lamp box 5 has been installed light supply apparatus 1 in regular turn, colour filter 2, concavees lens 3 and convex lens 4, the light-emitting window of light supply apparatus 1 is aimed at the light inlet of colour filter 2, the light-emitting window of colour filter 2 is aimed at the light inlet of concavees lens 3, the light-emitting window of concavees lens 3 is aimed at the light inlet of convex lens 4, and the lower edge of colour filter 2, the center of the center of concavees lens 3 and convex lens 4 is on same primary optical axis, distance between concavees lens 3 and the convex lens 4 is less than the focal length of convex lens 3, and greater than concavees lens 3 (negative focal length) and convex lens 4 focal length sums, concavees lens 3 and convex lens 4 have been formed the light group of dolly-out,ing dolly-back of long-focus, colour filter 2 is positioned at the combined focal position of the light group of dolly-out,ing dolly-back, and the light that sends from the lower edge of colour filter 24 is parallel to primary optical axis after through concavees lens 3 and convex lens.
In the utility model, described colour filter 2 adopts Red lightscreening plate or diaphragm sheets, and light supply apparatus 1 adopts led light source or self-focusing halogen tungsten lamp light source, and has in the parabolic collimating reflectors any.。
The utility model has added concavees lens again in original light channel structure, concavees lens and convex lens have been formed the light group of dolly-out,ing dolly-back, its combined focal length
Be single convex lens
Doubly.And the defocusing amount tolerance of colour filter
Be directly proportional with the system focal length, thereby the long-shot optical-train type system can under equal conditions amplify the defocusing amount tolerance, thereby reduce the required precision that machining and light path are regulated, than being easier to realize angle requirement in 3 fens.
The utility model is simple in structure, novel, realized a kind of long-focus, the long-shot optical-train type precision approach course indicating lamp structure that the defocusing amount tolerance is big, solved general simple lens type precision approach course indicator light requirement on machining accuracy height, light path and regulated difficulty, 3 fens angles and require the difficult problem that is difficult to realize.
Description of drawings
Fig. 1 is the structural diagrams of the utility model specific embodiment.
Number in the figure: 1 is light supply apparatus, and 2 is colour filter, and 3 is concavees lens, and 4 is convex lens, and 5 is lamp box.
The specific embodiment
Further specify the utility model in conjunction with the accompanying drawings below by embodiment.
Embodiment 1: as shown in Figure 1, indicating lamp structure comprises light supply apparatus 1, colour filter 2, concavees lens 3, convex lens 4 and lamp box 5; The inside of lamp box 5 has been installed light supply apparatus 1, colour filter 2, concavees lens 3 and convex lens 4 in regular turn, and the center of the center of the lower edge of colour filter 2, concavees lens 3 and convex lens 4 is on same horizontal line; The focal length of convex lens 4 be 312mm, the focal length of concavees lens 3 is-217.2mm, the diameter of two lens is 130mm, between concavees lens 3 and the convex lens 4 is 156mm apart from d, thereby the focal length of the light group of dolly-out,ing dolly-back formed of concavees lens 3 and convex lens 4 is 1107.3mm, and colour filter 2 is about 553.7mm from the distance of concavees lens 3.
The defocusing amount tolerance of this system is 8.3mm, is 13 times of simple lens structure.
Embodiment 2: light supply apparatus 1 has adopted ruddiness or white LED light source, and colour filter 2 is the diaphragm sheet, and all the other are identical with embodiment 1, forms the complete precision approach course indicator light of a cover by two these systems of cover (ruddiness and white light).
Claims (2)
1. long-shot optical-train type precision approach course indicator lamp, comprise light supply apparatus (1), colour filter (2), concavees lens (3), convex lens (4) and lamp box (5), it is characterized in that: the inside of lamp box (5) has been installed light supply apparatus (1) in regular turn, colour filter (2), concavees lens (3) and convex lens (4), the light-emitting window of light supply apparatus (1) is aimed at the light inlet of colour filter (2), the light-emitting window of colour filter (2) is aimed at the light inlet of concavees lens (3), the light-emitting window of concavees lens (3) is aimed at the light inlet of convex lens (4), and the lower edge of colour filter (2), the center of the center of concavees lens (3) and convex lens (4) is on same primary optical axis, distance between concavees lens (3) and the convex lens (4) is less than the focal length of convex lens (3), and greater than concavees lens (3) negative focal length and convex lens (4) focal length sum, concavees lens (3) and convex lens (4) have been formed the light group of dolly-out,ing dolly-back of long-focus, colour filter (2) is positioned at the combined focal position of the light group of dolly-out,ing dolly-back, the light that sends from the lower edge of colour filter (2) through concavees lens (3) and convex lens after (4) be parallel to primary optical axis.
2. long-shot optical-train type precision approach course indicator lamp according to claim 1, it is characterized in that: described colour filter (2) adopts Red lightscreening plate or diaphragm sheet, described light supply apparatus (1) adopts led light source or self-focusing halogen tungsten lamp light source, and has parabolic collimating reflectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200033869U CN201582675U (en) | 2010-01-06 | 2010-01-06 | Telephotograph optical assembly type precision approach path indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200033869U CN201582675U (en) | 2010-01-06 | 2010-01-06 | Telephotograph optical assembly type precision approach path indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582675U true CN201582675U (en) | 2010-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200033869U Expired - Fee Related CN201582675U (en) | 2010-01-06 | 2010-01-06 | Telephotograph optical assembly type precision approach path indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582675U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257451A (en) * | 2013-04-18 | 2013-08-21 | 湖北华航光电股份有限公司 | Precise approach channel indicator optical imaging system |
-
2010
- 2010-01-06 CN CN2010200033869U patent/CN201582675U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257451A (en) * | 2013-04-18 | 2013-08-21 | 湖北华航光电股份有限公司 | Precise approach channel indicator optical imaging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20130106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |