Projection lamp and projection imaging system
By adjusting the position of the pattern area on the pattern sheet, making it deviate from the geometric center of the pattern sheet and consistent with the imaging direction, the existing projection lamp has solved the problem of small patterns, difficult manufacturing and low brightness, and a larger, clearer and brighter pattern projection effect is achieved.
Patent Information
- Application Number
- CN202421805653.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When projecting patterns, existing projector lamps have smaller patterns due to projection angle problems, making them difficult to manufacture. The pattern is not clear enough after enlargement and the brightness is insufficient.
By changing the position of the pattern area on the pattern sheet, the geometric center of the pattern area deviates from the geometric center of the pattern sheet and is consistent with the imaging direction, thereby changing the projection imaging distance, increasing the area of the pattern area, reducing manufacturing difficulty, and improving the clarity and brightness of the pattern.
The ability to create larger patterns is realized, the difficulty of manufacturing is reduced, the projected patterns are clearer, the brightness is increased, and the viewing experience is optimized.
Smart Images
Figure CN223051630U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of projection imaging, in particular to a projection lamp and a projection imaging system. Background Art
[0002] With the development of technology, transportation has become more and more convenient. Whether it is a mountainous area with rugged roads or a city separated by the sea, more and more tunnels have been built. While ensuring stable lighting inside the tunnel, there is also a pursuit of projecting various patterns on the wall to make the interior of the tunnel more beautiful. However, currently, the projection lamps on the market generally project corresponding patterns in the area where the optical axis passes on the projection film, so as to ensure the maximum luminous flux per unit area in the pattern area. However, due to the projection angle problem, the projection magnification is usually large, resulting in a small pattern, difficult to manufacture, and the pattern obtained after magnification is not clear enough. At the same time, due to the small pattern, the total luminous flux passing through the pattern area is small. After spreading to the projection imaging surface, the projected pattern is darker and the brightness is insufficient. Summary of the Invention
[0003] The problem to be solved by the utility model is to provide a projection lamp and a projection imaging system, which can produce larger patterns, reduce the manufacturing difficulty, make the projected patterns clearer, and increase the brightness of the projected patterns.
[0004] To solve the above technical problems, one of the technical solutions adopted by the utility model is: a projection lamp, comprising a lamp body and a pattern film. The pattern film includes a pattern area and a light-shielding area. The lamp body emits light that is projected onto an imaging surface through the pattern film. The optical axis passes through the geometric center of the pattern film. The geometric center of the pattern area deviates from the geometric center of the pattern film, and the deviation direction of the geometric center of the pattern area is the same as the imaging direction. The working principle of the utility model: By changing the position of the pattern area on the pattern film, the projection imaging distance is changed. While keeping the size of the projection imaging area unchanged, the area of the pattern area is increased, the manufacturing difficulty of the pattern area is reduced, and the projection on the imaging surface is made clearer, and the projection brightness is increased.
[0005] As an improvement, the light-shielding area is formed by covering the pattern film with a light-shielding material.
[0006] As an improvement, the geometric center of the pattern area is located above the geometric center of the pattern film, and the imaging direction is above the lamp body.
[0007] The second technical solution adopted by the present utility model is: a projection imaging system, including a tunnel and a projection lamp fixed on the wall at the top of the tunnel. The projection lamp includes a lamp body and a pattern sheet. The pattern sheet includes a pattern area and a light-shielding area. The light emitted by the lamp body is projected onto the tunnel wall through the pattern sheet, and the optical axis passes through the geometric center of the pattern sheet. The geometric center of the pattern area is offset from the geometric center of the pattern sheet, and the offset direction of the geometric center of the pattern area is consistent with the imaging direction.
[0008] As an improvement, the light-shielding area is formed by covering the pattern sheet with a light-shielding material.
[0009] As an improvement, the geometric center of the pattern area is located above the geometric center of the pattern sheet, and the projection surface is the wall at the top of the tunnel.
[0010] The beneficial effects of the present utility model are:
[0011] 1. The area of the pattern area on the pattern sheet is increased, the manufacturing difficulty is reduced, it is convenient for the manufacturer to make the pattern area clearer, and thus the projection is clearer;
[0012] 2. The total luminous flux passing through the pattern area is increased, the projection brightness is increased, and the viewing experience of people is optimized. Description of the Drawings
[0013] Figure 1 It is a schematic diagram of the projection imaging of the projection lamp.
[0014] Figure 2 It is Figure 1 The enlarged view of area A in
[0015] Figure 3 It is a comparison diagram of the pattern area of the present utility model and the pattern area of the prior art.
[0016] Figure 4 It is Figure 3 The enlarged view of area B in
[0017] Figure 5 It is a schematic diagram of the distribution of the pattern area and the light-shielding area on the pattern sheet.
[0018] Explanation of the reference numerals in the drawings: 1. Projection lamp; 2. Lamp body; 3. Pattern sheet; 31. Pattern area; 32. Light-shielding area; 33. Original pattern area; 4. Wall; 41. Imaging area; 42. Original imaging area. Embodiment
[0019] The present utility model will be further described in detail below in conjunction with the drawings in the specification;
[0020] Such as Figure 1 、 2As shown in FIGS. 5, a projection lamp and a projection imaging system include a projection lamp 1 projected in a tunnel. The projection lamp 1 includes a lamp body 2 and a pattern sheet 3. The pattern sheet 3 includes a pattern area 31 and a light-shielding area 32. The light-shielding area 32 is formed by covering the pattern sheet 3 with a light-shielding material. The light emitted by the lamp body 2 is projected onto a wall 4 after passing through the pattern sheet 3. The optical axis of the lamp body 2 passes through the geometric center of the pattern sheet 3. The geometric center of the pattern area 31 is offset and non-coincident with the geometric center of the pattern sheet 3. The offset direction of the geometric center of the pattern area 31 is consistent with the imaging direction. When the projection surface is the top wall of the tunnel, the geometric center of the pattern area 31 is above the geometric center of the pattern sheet 3. When the projection surface is the ground of the tunnel, the geometric center of the pattern area 31 is below the geometric center of the pattern sheet 3. When the projection surface is the left wall of the tunnel, the geometric center of the pattern area 31 is on the left side of the geometric center of the pattern sheet 3. When the projection surface is the right wall of the tunnel, the geometric center of the pattern area 31 is on the right side of the geometric center of the pattern sheet 3.
[0021] The working principle of the present utility model: As Figures 1 to 5 shown in FIG. 5, in the prior art, the light emitted by the lamp body 2 passes through the original pattern area 33 and is projected onto the wall 4 to form an original imaging area 42. After applying the present utility model, the light emitted by the lamp body 2 passes through the pattern area 31 and is projected onto the wall 4 to form an imaging area 41. When the areas of the original imaging area 42 and the imaging area 41 are the same, the area of the original pattern area 33 is relatively small, making it difficult to manufacture a photo with a matching size and sufficient clarity. In this technical solution, the geometric center of the pattern area 31 is not coincident with the geometric center of the pattern sheet 3, causing the geometric center of the pattern area 31 to deviate from the geometric center on the pattern sheet 3, and the deviation direction of the geometric center of the pattern area 31 is consistent with the imaging direction, resulting in a shorter projection distance and a smaller magnification factor. Furthermore, the area of the pattern area 31 is relatively larger than that of the original pattern area 33, which can be manufactured more clearly and reduces the corresponding manufacturing difficulty. At the same time, because the area increases, the total luminous flux passing through the pattern area 31 also increases, and the brightness of the imaging area 41 increases, facilitating the user to view and appreciate.
Claims
1. A projection lamp, comprising a lamp body and a pattern sheet, characterized in that: The pattern sheet includes a pattern area and a shading area. The light emitted by the lamp body is projected onto an imaging surface through the pattern sheet. The optical axis passes through the geometric center of the pattern sheet. The geometric center of the pattern area deviates from the geometric center of the pattern sheet, and the deviation direction of the geometric center of the pattern area is consistent with the imaging direction.
2. The projection lamp according to claim 1, characterized in that: The light-shielding area is formed by covering the pattern sheet with a light-shielding material.
3. The projection lamp according to claim 1, characterized in that: The geometric center of the pattern area is located above the geometric center of the pattern piece, and the imaging direction is located above the lamp body.
4. A projection imaging system, comprising a projection lamp projected onto a top wall, the projection lamp comprising a lamp body and a pattern sheet, characterized in that: The pattern piece includes a pattern area and a shading area. The light emitted by the lamp body is projected onto the top wall through the pattern piece. The optical axis passes through the geometric center of the pattern piece. The geometric center of the pattern area is located above the geometric center of the pattern piece.
5. The projection imaging system according to claim 4, characterized in that: The light-shielding area is formed by covering the pattern sheet with a light-shielding material.
6. The projection imaging system according to claim 4, characterized in that: The projection lamp is installed in the tunnel, and the light emitted by the projection lamp is projected onto the top wall of the tunnel through the pattern area.