TW201629394A - Zoom spot light - Google Patents

Abstract

The present invention discloses a zoom spot light. The zoom spot light comprises: a light source, a reflective cup, a fixed lens and a movable lens. With the implementation of the present invention, the movable lens can be moved along an optical axis inside the reflective cup, thus the zoom spot light can adjust the relative position of the movable lens and the fixed lens, to output a broad beam light, a collimating beam light or a progressive light beam in between the broad beam light and the collimating beam light.

Description

Zoom light

The present invention relates to a projection lamp, and more particularly to a zoom projection lamp having a fixed lens and a movable lens.

With the rise of social modernization and environmental awareness, people's demand for energy-saving products is rising. The rapid progress of LED and OLED industry and the significant reduction in cost have made LED and OLED gradually become the main lighting components under energy-saving requirements.

Among them, the structure of the projection lamp is also one of the main products in the field of LED and OLED application, especially the high-power LED projection lamp, which has gradually become the mainstream of the current projection lamp application, whether it is special lighting, rescue search, stage or stretching. Taiwanese applications or automotive lighting have gradually used high-power LED projection lamps to replace traditional power-hungry and heat-prone projection lamps.

However, today, it is possible to directly output a beam of a broad beam, a beam of a collimating beam, or a progressive high-power LED projection of a beam between an astigmatism mode and a concentrating mode. Lights, especially high-power LED zoom projectors, are still paying off.

It is known that the mass production of most projection lamps is not only complicated to produce, but also The projection lamp produced cannot simply cause the light to form an approximately collimated output, which results in the use of stray light when the projection lamp is used, and the use efficiency of the projection lamp is reduced.

In view of this, a practical zoom projection lamp with simple light Learning, institutional equipment and easy-to-manufacture design, in a small size, without expensive equipment, low-cost requirements, can produce high-quality zoom illuminator with astigmatism mode and concentrating mode, in astigmatism mode A wide and uniform light shape can be obtained. In the concentrating mode, the light can be formed into an approximately collimated output simply without generating stray light, which is increasingly common to various industries of LED, OLED and projection lamp applications. look forward to.

The present invention is a zoom projection lamp having a light source, a reflector, a fixed lens, and a movable lens. In the implementation of the present invention, the relative position of the movable lens of the zoom projection lamp and the fixed lens can be adjusted by moving the movable lens, so that the zoom projection lamp can output a beam of the astigmatism mode according to the needs of the user. Or a collimating beam, or a progressive beam between the astigmatism mode and the concentrating mode.

The present invention provides a zoom projection lamp, comprising: a reflector having a central axis, an exit opening and a bottom surface opposite to the light exit opening, and the central axis is centered on the center point and the bottom surface of the light exit opening a light source is fixed on the central axis of the bottom surface; a fixed lens is fixed in the reflector on the light exit side, and the central axis overlaps the axis of the fixed lens, a fixed lens is fixed around the first light-shielding sleeve extending toward the light source side; and a mobile type The lens is movably disposed on a central axis between the light source and the fixed lens, and a second light shielding sleeve extending toward the light source side is fixed around the movable lens.

With the implementation of the present invention, at least the following advancements can be achieved:

First, the structure is simple, easy to manufacture, and low in cost.

Second, it can output a beam of the astigmatism mode or a collimating beam or a progressive beam between the astigmatism mode and the concentrating mode.

In order to make the technical content of the present invention known to those skilled in the art and to implement the present invention, and in accordance with the disclosure, the scope of the application, and the drawings, the related objects and advantages of the present invention can be easily understood by those skilled in the art. The detailed features and advantages of the present invention will be described in detail in the embodiments.

100‧‧‧Zoom projection lamp

10‧‧‧reflector

10a‧‧‧Bottom shading sleeve

11‧‧‧Central axis

12‧‧‧Light outlet

13‧‧‧ bottom surface

20‧‧‧Light source

30‧‧‧Fixed lens

40‧‧‧First light-shielding sleeve

50‧‧‧Mobile lens

60‧‧‧Light beam in concentrating mode

60'‧‧‧ astigmatic mode beam

70‧‧‧Second light shielding sleeve

80‧‧‧light board

90‧‧‧heating mechanism

A, B, C‧‧‧ rays travel direction

D, E‧‧‧ rays travel direction

D1‧‧‧Diameter of fixed lens

D2‧‧‧Diameter of mobile lens

FIG. 1 is a cross-sectional view showing a zoom projection lamp according to an embodiment of the present invention.

2 is a schematic diagram of light travel of a light source of a zoom projection lamp according to an embodiment of the present invention.

FIG. 3 is a schematic diagram of light travel of a light source of another zoom projection lamp according to an embodiment of the present invention.

4 is a cross-sectional view showing a zoom projection lamp having a light-transmitting plate according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing another zoom projection lamp having a light-transmitting plate according to an embodiment of the present invention.

Figure 6 is a cross-sectional view of a zoom projection lamp having a heat dissipating mechanism according to an embodiment of the present invention; See the schematic.

FIG. 7 is a cross-sectional view showing a zoom projection lamp having a light-transmitting plate and a heat dissipation mechanism according to an embodiment of the present invention.

Please refer to FIG. 1 , which is a zoom projection lamp 100 of an embodiment, comprising: a reflector 10; a light source 20; a fixed lens 30; and a movable lens 50.

As shown in FIG. 1 , the reflector 10 has a central shaft 11 , a light exit opening 12 and a bottom surface 13 opposite to the light exit opening 12 , and the central shaft 11 is defined by the center point and the bottom surface 13 of the light exit opening 12 . The connection of the center point is formed. In addition, the shape or material of the reflector 10 allows the inner surface of the reflector 10 to be reflected by the reflected light and emitted through the light exit opening 12 at a substantially collimated or small angle.

Similarly, as shown in Fig. 1, the light source 20 is fixed to the central axis 11 of the bottom surface 13 and is located on the opposite side of the light exit opening 12. The light source 20 may be composed of at least one LED or at least one OLED. Of course, it may be composed of at least one LED and at least one OLED, and the light emitted by the light source 20 may be white light, yellow light or other depending on the application. Monochromatic light of any color, or light formed by mixing light of at least two or more colors.

Referring to FIG. 1 again, the fixed lens 30 is fixed in the reflector 10 on the side of the light exit opening 12, and the central axis 11 of the reflector 10 overlaps with the axis of the fixed lens 30, and is fixed. A first light-shielding sleeve 40 extending toward the light source 20 side is fixed to the periphery of the lens 30.

The fixed lens 30 is fixed to the light exit port 12 side, and one surface of the fixed lens 30 can be selected to be aligned with the light exit opening 12, and the other surface of the fixed lens 30 is located inside the reflective cover 10.

The fixed lens 30 can be a positive lens, a negative lens, a fluoron lens, a liquid lens, a liquid crystal lens or a spatial light modulation device with a phase modulation function. The first light-shielding sleeve 40 can be formed by a light absorbing material or a matte material. Thus, the light that is irradiated to the first light-shielding sleeve 40 by the light source 20 does not penetrate or reflect in an unspecified direction. Produce stray light.

The positive lens means that when a collimated or approximately parallel beam is incident on a lens parallel to the optical axis, it is focused on the opposite side of the light incident surface, and a convergent beam is generated on the opposite side; A negative lens means that when a collimated or nearly parallel beam is incident on a lens parallel to the optical axis, a virtual image is focused in the same direction of the light incident surface, and a diverging beam is generated on the opposite side.

On the other hand, as shown in FIGS. 2 and 3, the length of the first light-shielding sleeve 40 can be designed such that any light emitted from the light source 20 cannot be directly emitted from the light exit opening 12 of the reflection cover 10.

Further, as shown in FIG. 1, the movable lens 50 is movably disposed on the central axis 11 between the light source 20 and the fixed lens 30, and the periphery of the movable lens 50 is fixedly extended toward the light source 20 side. The second light shielding sleeve 70. The diameter D2 of the movable lens is smaller than the diameter D1 of the fixed lens, and the moving range of the movable lens 50 to which the second light shielding sleeve 70 is fixed may be from one end of the fixed lens 30 to one end of the light source 20.

The mobile lens 50 can be a positive lens, a negative lens, a fluoron lens, a liquid lens, a liquid crystal lens or an empty phase modulation function. Inter-light modulation device. The second light-shielding sleeve 70 can be formed by a light absorbing material or a matte material. Thus, the light that is irradiated to the second light-shielding sleeve 70 by the light source 20 does not penetrate or reflect in an unspecified direction. Produce stray light.

Furthermore, as shown in FIGS. 2 and 3, as the relative positions of the movable lens 50 and the fixed lens 30 are different, the light that has been irradiated and penetrated through the movable lens 50 may be irradiated and penetrated in whole or in part. Fixed lens 30.

As shown in FIG. 2, the light beam of the traveling direction A emitted by the light source 20 or the light beam having an angle with the central axis 11 that is larger than the angle between the traveling direction A and the central axis 11 is received by the bottom end light shielding sleeve 10a of the reflector 10. It is blocked and cannot be ejected from the light exit opening 12 of the reflector 10 (in the drawing, the dotted line and X indicate that it cannot be irradiated).

As shown in FIG. 2, the light beam of the traveling direction B emitted by the light source 20, or the angle with the central axis 11 is smaller than the angle between the traveling direction A and the central axis 11, and larger than the angle between the traveling direction C and the central axis 11, All of them are irradiated to the reflector 10, and are reflected by the reflector 10 and are emitted from the light exit port 12 so as to be approximately collimated or diverged at a small angle.

As shown in FIG. 2, the light source 20 emits an angle with the central axis 11 that is smaller than the angle between the traveling direction C and the central axis 11, and is larger than the angle between the traveling direction D and the central axis 11, and is received by the first light shielding sleeve. 40 blocking, and because the first light-shielding sleeve 40 can be formed by a light absorbing material, the light will not penetrate or reflect through the first light-shielding sleeve 40 to generate a stray light.

The light beam in the traveling direction D emitted from the light source 20 is blocked by the second light-shielding sleeve 70 and is not emitted from the light-emitting port 12 (in the second drawing, the dotted line and X indicate that the irradiation cannot be reached).

As shown in Fig. 2, the light source 20 is emitted from the center shaft 11 The angle is smaller than the angle between the traveling direction D and the central axis 11, and the light that is larger than the angle between the traveling direction E and the central axis 11 is blocked by the second light shielding sleeve 70, and the second light shielding sleeve 70 can be a light absorbing material. Formed, the light will not penetrate or reflect through the second light-shielding sleeve 70 to generate a stray light.

Then, as shown in FIG. 2, the light emitted from the light source 20 at an angle smaller than the angle between the traveling direction E and the central axis 11 is totally irradiated to the movable lens 50, and is applied to the movable lens 50. After the modulation, the movable lens 50 is penetrated and irradiated to the fixed lens 30, and then the stationary lens 30 is modulated into a collimating beam of the condensing mode to be emitted from the light exit port 12.

As shown in FIG. 2, the zoom lamp 100, the position of the movable lens 50 and the fixed lens 30, causes the light emitted from the light source 20 to be partially reflected by the reflector 10 and emitted from the light exit port 12, and the other portion. The portion is blocked by the bottom end light-shielding sleeve 10a of the reflector 10 or the first light-shielding sleeve 40 or the second light-shielding sleeve 70, and is modulated by the movable lens 50 to be emitted and reaches the fixed lens 30 and then adjusted by the fixed lens 30. The light that is emitted from the light exit port 12 is emitted in the form of a collimating beam of a condensing mode.

Please continue to refer to FIG. 3, when the movable lens 50 and the second light-shielding sleeve 70 are moved on the central axis 11 to be close to the light source 20, most of the light emitted by the light source 20 will be irradiated to the first Two light shielding sleeves 70 and a movable lens 50.

In each of the embodiments, an element or a means for moving the movable lens 50 on the central shaft 11 may be an external driving device (not shown) connected to the second light-shielding sleeve 70.

As shown in FIG. 3, the light of the traveling direction A emitted by the light source 20, or the angle with the central axis 11 is larger than the direction of the traveling direction A and the central axis 11. The corner light is blocked by the bottom end light-shielding sleeve 10a or the second light-shielding sleeve 70 of the reflector 10, and cannot be emitted from the light-emitting port 12 of the reflector 10 (in the figure, the dotted line and X indicate that the light cannot be reached).

As shown in FIG. 3, the light beam of the traveling direction B emitted by the light source 20, or the angle with the central axis 11 is smaller than the angle between the traveling direction A and the central axis 11, and larger than the angle between the traveling direction C and the central axis 11, Both of them are irradiated to the second light-shielding sleeve 70, and are blocked by the second light-shielding sleeve 70, and cannot be emitted from the light-emitting port 12 (in the drawing, the broken line is connected and X indicates that the irradiation cannot be reached).

As shown in FIG. 3, the light in the traveling direction C emitted from the light source 20 is emitted by the movable lens 50, but is blocked by the first light-shielding sleeve 40, and therefore does not emit from the light-emitting port 12 (Fig. In the illustration, the dotted line and X indicate that the irradiation cannot be reached).

As shown in FIG. 3, the light emitted from the light source 20 at an angle smaller than the traveling direction C and greater than or equal to the angle between the traveling direction E and the central axis 11 is emitted by the movable lens 50. However, since it is blocked by the first light-shielding sleeve 40, it is not emitted from the light-emitting port 12 (in the drawing, the broken line is connected and X indicates that the irradiation cannot be reached).

Similarly, as shown in FIG. 3, the light emitted from the light source 20 at an angle smaller than or equal to the angle between the traveling direction E and the central axis 11 is totally irradiated to the movable lens 50, and is modulated by the movable lens 50. Then, it passes through the movable lens 50 and is irradiated to the fixed lens 30, and is then emitted from the light exit port 12 by the fixed lens 30 to be converted into a light beam 60' (broad beam).

As shown in Fig. 3, the zoom projection lamp 100, the position of the movable lens 50 and the fixed lens 30, causes the light emitted by the light source 20 to be partially reversed. The bottom end of the cover 10 is blocked by the light-shielding sleeve 10a or the second light-shielding sleeve 70, and the other part is modulated by the movable lens 50 and then blocked by the first light-shielding sleeve 40, and is modulated by the movable lens 50. When the stationary lens 30 is reached and the light emitted by the fixed lens 30 is modulated, it is emitted from the light exit port 12 in the form of a beam 60' of a astigmatism mode.

In the foregoing embodiment, the combination of the movable lens 50 and the fixed lens 30 is referred to as an action mode of an equivalent positive lens.

Next, as shown in FIGS. 4 and 5, the light exit opening 12 of the reflector cover 10 of the zoom lamp 100 may further cover a light-transmitting plate 80. In this way, it can be ensured that foreign matter or water droplets do not enter the reflector 10 from the light exit opening 12 and affect the normal operation of the zoom projection lamp 100. Of course, the bottom surface 13 of the reflector 10 can also cover a shield (not shown) to ensure that foreign matter or water droplets do not enter the reflector 10 from the bottom surface 13.

In addition, as shown in FIGS. 6 and 7, the zoom lamp 100 may further have a heat dissipating mechanism 90 coupled to the light source 20. The size or material of the heat dissipating mechanism 90 is not particularly limited, and only the normal operation of the zoom lamp 100 is not affected, and the heat dissipating area of the light source 20 can be increased. The embodiment shown in FIG. 7 is an embodiment of a zoom projection lamp 100 having both the heat dissipation mechanism 90 and the light-transmitting plate 80.

In summary, it can be seen from the foregoing embodiments that the movable projection lens 50 can be moved on the central axis 11 when the zoom projection lamp 100 is implemented, and the movable lens 50 and the fixed lens are moved when the movable lens 50 moves closer to the fixed lens 30. The relative position of 30 will be modulated by the moving lens 50 and reach the fixed lens. The light emitted from the light exit port 12, which is modulated by the fixed lens 30, is emitted as a collimating beam in the condensing mode.

When the movable lens 50 is moved in the direction of the light source 20, the light emitted from the moving lens 50 and reaching the fixed lens 30 is modulated by the fixed lens 30, and the light emitted from the light exit port 12 is gradually diverged. The light beam between the collimating beam of the condensing mode shown in Fig. 2 and the beam 60' of the astigmatism mode shown in Fig. 3.

Moreover, when the movable lens 50 moves closer to the light source 20, the position of the movable lens 50 and the fixed lens 30 will be modulated by the movable lens 50 and will reach the fixed lens 30 and be subjected to the fixed lens 30. The light emitted from the light exit port 12 is modulated and emitted in the form of a beam 60' (broad beam) in the astigmatism mode.

In the foregoing embodiments, the first light-shielding sleeve 40, the second light-shielding sleeve 70 or the bottom end light-shielding sleeve 10a of the reflector 10 can be shielded so that any light emitted by the light source 20 cannot directly emit light. The mouth 12 is shot.

The embodiments are described to illustrate the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the present invention and to implement the present invention without limiting the scope of the present invention. Equivalent modifications or modifications made by the spirit of the disclosure should still be included in the scope of the claims described below.

100‧‧‧Zoom projection lamp

10‧‧‧reflector

10a‧‧‧Bottom shading sleeve

11‧‧‧Central axis

12‧‧‧Light outlet

13‧‧‧ bottom surface

20‧‧‧Light source

30‧‧‧Fixed lens

40‧‧‧First light-shielding sleeve

50‧‧‧Mobile lens

70‧‧‧Second light shielding sleeve

Claims (10)

A zoom projection lamp includes: a reflector having a central axis, a light exit opening and a bottom surface opposite to the light exit opening, wherein the central axis is from a center point of the light exit opening and a center of the bottom surface a light source is fixed on the central axis of the bottom surface; a fixed lens is fixed in the reflector on the light exit side, and the central axis and the fixed lens The axis of the fixed lens overlaps with a first light-shielding sleeve extending toward the light source side; and a movable lens movably disposed at the center between the light source and the fixed lens A second light-shielding sleeve extending toward the light source side is fixed to the periphery of the movable lens. The zoom projection lamp of claim 1, wherein the fixed lens and the movable lens form an equivalent positive lens. The zoom projection lamp of claim 1, wherein the first light shielding sleeve is formed of a light absorbing material or a matte material. The zoom projection lamp of claim 1, wherein the first light-shielding sleeve, the second light-shielding sleeve or one of the bottom end light-shielding sleeves is shielded to emit the light source. Light can't be directly emitted from the light exit. The zoom projection lamp of claim 1, wherein the fixed lens is a positive lens, a negative lens, a fluoron lens, a liquid lens, a liquid crystal lens or a spatial light having a phase modulation function. Modulation device. The zoom projection lamp of claim 1, wherein the movable lens is a positive lens, a negative lens, a Philippine lens, a liquid lens, and a liquid. A crystal lens or a spatial light modulation device having a phase modulation function. The zoom projection lamp of claim 1, wherein the light source is composed of at least one LED or at least one OLED. The zoom projection lamp of claim 1, wherein the second light shielding sleeve is formed of a light absorbing material or a matte material. The zoom projection lamp of claim 1, wherein the light exit port further covers a light transmissive plate. The zoom projection lamp of claim 1, further comprising a heat dissipating mechanism coupled to the light source.