CN205103533U - Secondary reflection device of rear -projection screen - Google Patents
Secondary reflection device of rear -projection screen Download PDFInfo
- Publication number
- CN205103533U CN205103533U CN201520775950.1U CN201520775950U CN205103533U CN 205103533 U CN205103533 U CN 205103533U CN 201520775950 U CN201520775950 U CN 201520775950U CN 205103533 U CN205103533 U CN 205103533U
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- Prior art keywords
- mirror
- secondary reflection
- projection
- primary event
- projection screen
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Abstract
The utility model relates to a secondary reflection device of rear -projection screen, including projector, speculum and back projection curtain, the speculum include a secondary reflector, two secondary reflector, a secondary reflector set up in the opposite of projector, the projection of projector can be shone to the secondary reflector, a secondary reflector's mirror surface slope place, the projection of secondary reflector reflection can shine to two secondary reflector, secondary reflecting mirror's opposite be equipped with the back projection curtain, the projection of secondary reflecting mirror reflection can shine supratentorial the back projection. The utility model discloses a secondary projection reflect meter reaches the projection distance of regulation in reproduction stand -off distance not enough space, can shorten the projector distance effectively to guarantee picture size and quality.
Description
Technical field
The utility model relates to a kind of secondary reflection device of rear-projection screen, belongs to projector equipment field.
Background technology
At present, existing projector equipment is the unit single-image projection display system be made up of a projector, one piece of rear projection screen, it is the simplest back-projection system, signal source (video or computer picture and text) is sent into projector, by projector on projection screen, be widely used in the occasions such as business presentations, multimedia teaching, meeting room.In installation back projecting system, often can run into the problem (or for saving space) of rear-projection limited space.The secondary reflection technology of this patent (namely with catoptron, projected light beam being turned back secondary) is used inside limited space, to make screen and ensure the quality of picture.
Utility model content
The technical matters that the utility model solves is, not enough for prior art, provides a kind of secondary reflection device of rear-projection screen.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is:
A secondary reflection device for rear-projection screen, comprises projector, catoptron and back projection curtain, and described catoptron comprises primary event mirror, secondary reflection mirror; Described primary event mirror is arranged at the opposite of projector, and the projection of projector can be irradiated on primary event mirror; The minute surface slant setting of described primary event mirror, the projection of described primary event mirror reflection can be irradiated on secondary reflection mirror; The opposite of described secondary reflection mirror is provided with back projection curtain, and the projection of described secondary reflection mirror reflection can be irradiated on back projection curtain.
Also comprise control device, described primary event mirror, secondary reflection mirror are provided with angle adjusting mechanism, and described angle adjusting mechanism is connected with control device signal.
Described primary event mirror, the bottom of secondary reflection mirror are provided with dragging track, and the lower end of primary event mirror, secondary reflection mirror is provided with the pulley that can slide in orbit.
Be provided with slide control device in described primary event mirror, secondary reflection mirror, described slide control device can control primary event mirror, secondary reflection mirror slides in orbit automatically, and described slide control device is connected with control device signal.
Described catoptron is made up of eyeglass and mirror support, and described reflection support is that welded steel processes, and the surface of reflection support adopts electrostatic painting process.
Described catoptron is front vacuum coating catoptron.
Described angle adjusting mechanism is universal regulator.
The reflectivity of described catoptron is greater than 90%, and minute surface flatness is within ± 0.02mm.
Beneficial effect:
The utility model discloses a kind of secondary reflection device of rear-projection screen.In rear-projection project installation; often can run into the limited problem in projector space place; the utility model uses rear projection screen Special reflecting mirror that projection beam is turned back twice, reaches the screen distance of regulation, to ensure picture dimension in the space of projection projection distance deficiency.Use reflectivity to be greater than 90%, the catoptron within minute surface flatness ± 0.02mm, the loss of projection light source brightness, anamorphose reduce in lowest range by guarantee.Adopt reprojection's reflection unit, effectively can shorten projector distance, and avoid producing the bad phenomenon such as solar effect (the bright surrounding in brightness disproportionation center is relatively dark).
Accompanying drawing explanation
Fig. 1: the structural representation of the secondary reflection device of rear-projection screen of the present utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
A secondary reflection device for rear-projection screen, comprises projector 1, catoptron and back projection curtain 4, and described catoptron comprises primary event mirror 2, secondary reflection mirror 3; Described primary event mirror 2 is arranged at the opposite of projector, and the projection of projector 1 can be irradiated on primary event mirror 2; The minute surface slant setting of described primary event mirror 2, the projection that described primary event mirror 2 reflects can be irradiated on secondary reflection mirror 3; The opposite of described secondary reflection mirror 3 is provided with back projection curtain 4, and the projection that described secondary reflection mirror 3 reflects can be irradiated on back projection curtain 4.Also comprise control device, described primary event mirror 2, secondary reflection mirror 3 are provided with angle adjusting mechanism, and described angle adjusting mechanism is connected with control device signal.Described primary event mirror 2, the bottom of secondary reflection mirror 3 are provided with dragging track, and the lower end of primary event mirror 2, secondary reflection mirror 3 is provided with the pulley that can slide in orbit.Be provided with slide control device in described primary event mirror 2, secondary reflection mirror 3, described slide control device can control primary event mirror 2, secondary reflection mirror 3 slides in orbit automatically, and described slide control device is connected with control device signal.Described catoptron is made up of eyeglass and mirror support, and described reflection support is that welded steel processes, and the surface of reflection support adopts electrostatic painting process.Described catoptron is front vacuum coating catoptron.Described angle adjusting mechanism is universal regulator.The reflectivity of described catoptron is greater than 90%, and minute surface flatness is within ± 0.02mm.
The above; it is only preferred embodiment of the present utility model; not any pro forma restriction is done to the utility model; any those skilled in the art; do not departing within the scope of technical solutions of the utility model; according to technical spirit of the present utility model, any simple amendment that above embodiment is done, equivalently replace and improve, within the protection domain all still belonging to technical solutions of the utility model.
Claims (8)
1. a secondary reflection device for rear-projection screen, is characterized in that: comprise projector, catoptron and back projection curtain, and described catoptron comprises primary event mirror, secondary reflection mirror; Described primary event mirror is arranged at the opposite of projector, and the projection of projector can be irradiated on primary event mirror; The minute surface slant setting of described primary event mirror, the projection of described primary event mirror reflection can be irradiated on secondary reflection mirror; The opposite of described secondary reflection mirror is provided with back projection curtain, and the projection of described secondary reflection mirror reflection can be irradiated on back projection curtain.
2. the secondary reflection device of rear-projection screen as claimed in claim 1, it is characterized in that: also comprise control device, described primary event mirror, secondary reflection mirror are provided with angle adjusting mechanism, and described angle adjusting mechanism is connected with control device signal.
3. the secondary reflection device of rear-projection screen as claimed in claim 2, is characterized in that: described primary event mirror, the bottom of secondary reflection mirror are provided with dragging track, and the lower end of primary event mirror, secondary reflection mirror is provided with the pulley that can slide in orbit.
4. the secondary reflection device of rear-projection screen as claimed in claim 3, it is characterized in that: in described primary event mirror, secondary reflection mirror, slide control device is installed, described slide control device can control primary event mirror, secondary reflection mirror slides in orbit automatically, and described slide control device is connected with control device signal.
5. the secondary reflection device of rear-projection screen as claimed in claim 1, it is characterized in that: described catoptron is made up of eyeglass and mirror support, described reflection support is that welded steel processes, and the surface of reflection support adopts electrostatic painting process.
6. the secondary reflection device of rear-projection screen as claimed in claim 1, is characterized in that: described catoptron is front vacuum coating catoptron.
7. the secondary reflection device of rear-projection screen as claimed in claim 2, is characterized in that: described angle adjusting mechanism is universal regulator.
8. the secondary reflection device of rear-projection screen as claimed in claim 1, is characterized in that: the reflectivity of described catoptron is greater than 90%, and minute surface flatness is within ± 0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775950.1U CN205103533U (en) | 2015-10-09 | 2015-10-09 | Secondary reflection device of rear -projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775950.1U CN205103533U (en) | 2015-10-09 | 2015-10-09 | Secondary reflection device of rear -projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205103533U true CN205103533U (en) | 2016-03-23 |
Family
ID=55519308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520775950.1U Expired - Fee Related CN205103533U (en) | 2015-10-09 | 2015-10-09 | Secondary reflection device of rear -projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205103533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594435A (en) * | 2018-05-30 | 2018-09-28 | 广东电网有限责任公司 | A kind of substation field secondary device peace based on HUD technologies arranges device |
-
2015
- 2015-10-09 CN CN201520775950.1U patent/CN205103533U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594435A (en) * | 2018-05-30 | 2018-09-28 | 广东电网有限责任公司 | A kind of substation field secondary device peace based on HUD technologies arranges device |
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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: 20160323 Termination date: 20181009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |