WO2017080407A1

WO2017080407A1 - Optical fixing device, light source device, and projection equipment

Info

Publication number: WO2017080407A1
Application number: PCT/CN2016/104716
Authority: WO
Inventors: 陈永壮; 李屹
Original assignee: 深圳市光峰光电技术有限公司
Priority date: 2015-11-10
Filing date: 2016-11-04
Publication date: 2017-05-18

Abstract

An optical fixing device (200) comprises light source fixing parts (210) used for fixing a plurality of solid state light sources, second light combination element fixing parts (240) used for fixing at least one second light combination element, a condensing lens fixing part (250) used for fixing a condensing lens, and second reflecting mirror fixing parts (230). The second reflecting mirror fixing parts (230) are arranged corresponding to at least part of the plurality of solid state light sources, and the second reflecting mirror fixing parts (230) are used for fixing second reflecting mirrors. The second light combination elements are used for transmitting light which is emitted by part of the solid state light sources and is not reflected and/or are used for reflecting light reflected by the second reflecting mirrors; and the condensing lens is used for converging the light which passes through the second light combination elements. The optical fixing device (200) is compact in outline dimension and low in production cost; and optical elements fixed on the optical fixing device (200) are higher in accuracy of relative locations. The optical fixing device (200) can be used for a light source device and projection equipment.

Description

Optical fixture, light source device and projection device

Technical field

The present invention relates to the field of optics, and in particular to an optical fixture, a light source device, and a projection device.

Background technique

The existing light source device 101 using RGB three-color LED as a light source includes LED light source devices 102, 103, 104, coated glass sheets 105, 106, 107, a collecting lens 108 and a light rod 109.

technical problem

The LED light source devices 102, 103, 104 emit red, green, and blue light through the coated glass sheets 105, 106, 107 and the collecting lens 108, thereby generating white light concentrated on the light rod 109 to obtain a desired light source. However, due to the fact that the overall size of the LED light source device is too large and needs to be arranged in both horizontal and vertical directions, the overall size of the light source device is large, and in addition, the optical components located on the optical path of the LED light source device are more and positioned. The accuracy is high, but the optical components in the existing light source device 101 are respectively mounted on different fixed components. In order to ensure the relative position of the fixed components, the manufacturing precision of different fixed components is required to be high, thereby increasing the number of components. Cost of production.

Technical solution

In order to overcome the deficiencies of the prior art, it is an object of the present invention to provide an optical fixing device having a compact outer shape, high relative positional accuracy of optical components, and low production cost, and another object of the present invention is to provide an optical fixing. Another object of the present invention is to provide a light source device.

As an object of the present invention, an optical fixing device includes: a light source fixing portion for fixing a plurality of solid-state light sources; a second mirror fixing portion corresponding to at least a portion of the plurality of solid-state light sources, the second a mirror fixing portion for fixing the second mirror; a second light combining member fixing portion for fixing the at least one second light combining member, wherein the solid light source of the transmitting portion of the second light combining member is emitted and not The reflected light or/and the reflected light reflected by the second mirror; the condensing lens fixing portion for fixing the condensing lens, the condensing lens condensing the light passing through the second combining element.

In still another aspect of the optical fixing device, the optical fixing device further includes a first mirror fixing portion for fixing the first mirror and a first light combining member fixing portion for fixing the first light combining member, The first light combining element further reflects the light reflected by the first mirror to the second light combining element.

In still another aspect of the optical fixing device, the second mirror is plural, and the light source fixing portion is disposed on a horizontal surface, and is located at a first side of the second light combining element in a horizontal direction. The first mirror and the first light combining element are fixed to be perpendicular to the second light combining element, respectively, and the second mirror located on the second side of the second light combining element is fixed to The second light combining elements are parallel, and the acute angle of the second light combining element with the horizontal plane is 45°.

In still another aspect of the optical fixing device, the optical fixing device further includes a third mirror fixing portion for fixing the third mirror, wherein the solid state light source is an LED light source.

In still another aspect of the optical fixing device, the optical fixing device further includes a third mirror fixing portion for fixing the third mirror and a color wheel fixing portion for fixing the color wheel, the third The mirror reflects the concentrated excitation light to the color wheel to excite the wavelength converting material of the color wheel, the solid state light source being a laser light source or an LED light source.

In still another aspect of the optical fixing device, the third mirror fixing portion includes a rib extending toward the color wheel, and the third mirror is obliquely fixed to the rib relative to the color wheel on.

In still another aspect of the optical fixing device, the optical fixing device has a substantially funnel shape, the light source fixing portion is disposed at the funnel opening, and the first mirror fixing portion and the second mirror fixing portion respectively Arranging on a pair of inner inclined faces of the funnel, the collecting lens fixing portion is disposed at a neck of the funnel, and the first light combining element fixing portion and the second light combining element fixing portion are disposed at the funnel opening Between the neck and the neck, the third mirror fixing portion and the color wheel fixing portion are disposed at an end of the funnel opposite to the funnel opening, and a plate member is disposed at the funnel opening. A plurality of through holes as the light source fixing portions are opened on the plate member.

In still another aspect of the optical fixing device, the first mirror fixing portion, the second mirror fixing portion, the third mirror fixing portion, the first light combining member fixing portion, and the At least one of the second light-receiving element fixing portions includes at least two bosses having a hollow portion for filling the adhesive between adjacent ones of the bosses.

In still another aspect of the optical fixing device, the optical fixing device is integrally formed.

As another object of the present invention, a projection apparatus including the optical fixture in any of the above aspects.

As still another object of the present invention, a light source device includes a light source queue, an aggregation system, a third mirror, and a wavelength conversion device, the wavelength conversion device including a color wheel and a driving device, wherein: The light source queue is formed by a plurality of light sources arranged in a line; the gathering system is located in a light exiting direction of the light source queue, and the light emitted from the light source queue is concentrated to a third mirror; the third mirror will be gathered The rear light is reflected to the color wheel; the color wheel is excited by the light reflected by the third mirror to generate a laser beam; the driving device includes a driving portion and a rotating shaft, and the rotating shaft and the color wheel Fixedly connected, the driving portion drives the rotating shaft to rotate, thereby driving the color wheel to rotate; the rotating shaft of the driving device is parallel to the light source queue.

In still another aspect of the above light source device, a portion of the wavelength conversion device that projects over 50% of the line on which the light source queue is located overlaps the light source queue.

In still another aspect of the light source device, the color wheel is perpendicular to the rotation axis, and an intersection of a plane where the color wheel is located and the light source queue is located in a middle portion of the light source queue.

In still another aspect of the above light source device, the third mirror and the driving device are located on the same side of the color wheel.

In still another aspect of the light source device, the rotating shaft is longer than the driving portion, and the third mirror is at least partially located in a space surrounded by the driving portion and the rotating shaft and the color wheel. .

In still another aspect of the above light source device, the light source queue includes a first light source and a second light source, the first light source emits first light, and the second light source emits second light, the number of the first light source One or more, and the number of the second light sources is greater than or equal to one; the focusing system includes a second light combining element, a second mirror, and a collecting lens collecting lens; the second light combining element is located in at least one a second mirror disposed on a side of the exiting light of the first light source, the second mirror is disposed adjacent to the second light combining element; the second light combining element has a first light that transmits the first light and reflects the second light Characteristic, the second light combining element combines the first light and the second light incident thereon; at least one first light emitted by the first light source directly transmits the second combined light The element, and the second light emitted by the at least one of the second light sources are reflected by the second mirror to the second light combining element, and are reflected by the second light combining element to the collecting lens; The condensing lens is located on an outgoing light path of the second light combining element, and the condensing lens concentrates light incident thereon to the third mirror.

In still another aspect of the above light source device, the number of the second mirrors is greater than one, the second mirrors are arranged in a stepped second mirror array, each of the second mirrors and one of the The second light source is correspondingly disposed to reflect the second light emitted by the corresponding second light source to the second light combining element, and the second mirror array is directed to the second light along the light emitting direction of the light source queue The light-emitting elements gradually move closer together.

In still another aspect of the above light source device, the aggregation system further includes a first mirror and a first light combining element; the first mirror is disposed at a side of the second light combining element, and the a second mirror is located on an opposite side of the second light combining element; the first light combining element and the second light combining element are disposed, the first light combining element and the first mirror are located at the The same side of the second light combining element, and the first light combining element is disposed between the exit light paths of the two light sources in the light source queue, and does not block the light of the light source queue; the first The light combining element has a characteristic of reflecting the first light; the first light emitted by the at least one of the first light sources is reflected by the first mirror to the first light combining element, and continues through the first light combining element Reflected to the collecting lens.

In still another aspect of the above light source device, the first light combining element and the second light combining element are T-shaped.

In still another aspect of the above light source device, the first light source further includes a light source that emits the first light from a channel between the first mirror and the first light combining element, and the first light emitted by the light source The second light combining element is incident on the condensing lens or directly on the condensing lens without passing through the second light combining element.

In still another aspect of the above light source device, the first light emitted by the first light source and the second light emitted by the second light source have different polarization states; the second light combining element is a polarizing plate, and the transmitting device The light of one of the first light and the second light is reflected and the light of the other polarization state is reflected.

According to still another object of the present invention, a light source device includes: a light source queue formed by a plurality of light sources arranged in a line; the light source queue includes a first light source and a second light source, a light source exiting the first light, the second light source exiting the second light; a first light combining element and a second light combining element, the first light combining element having a characteristic of reflecting the first light, the second light combining The element has a characteristic of transmitting the first light and reflecting the second light; the second light combining element is disposed on an outgoing light path of at least one of the first light sources located in a middle portion of the light source queue, and transmits the light a first light emitted from the first light source to the collecting lens; the first light combining element and the second light combining element are disposed, and the first light combining element is disposed in the light source queue Between the exiting optical paths of the two light sources, the light exiting the light source queue is not blocked; the first mirror is disposed on the first side of the first light combining element and the second light combining element, and The first light combining element is located at the second The same side of the light element reflects first light emitted by the at least one first light source at the first end of the light source queue to the first light combining element, the first light combining element reflects the first light a second reflecting mirror disposed on the second side of the first light combining element and the second light combining element, and emitting at least one second light source located at the second end of the light source queue The second light is reflected to the second light combining element, the second light combining element reflects the second light to the collecting lens; the collecting lens is configured to perform light incident thereon Gather.

In still another aspect of the above light source device, the number of the first mirrors is greater than one, the first mirrors are arranged in a stepped first mirror array, each of the first mirrors and one of the first mirrors Correspondingly, the first light source is disposed to reflect the first light emitted by the corresponding first light source to the first light combining element, and the first mirror array is directed to the first light along the light emitting direction of the light source queue The light-emitting elements gradually move closer together.

In still another aspect of the light source device, the first light combining element and the second light combining element are T-shaped.

In still another aspect of the light source device, the first light emitted by the first light source and the second light emitted by the second light source have different polarization states; the second light combining element is a polarizing plate, and the transmitting device The light of one of the first light and the second light is reflected and the light of the other polarization state is reflected.

Beneficial effect

The optical fixing device provided by the invention has a plurality of optical components mounted thereon, and the optical fixing device not only accurately fixes the relative positions of the optical components, but also has a compact overall shape and helps the optical fixing device. To reduce the production cost of optical fixtures. The technical problem that the overall outer shape of the light source device in the prior art is large, the positioning accuracy of the optical component in the light source device is difficult to ensure, and the production cost is high is solved.

DRAWINGS

1 is a schematic structural view of a conventional light source device;

Figure 2 is a front elevational view of the light source fixing device of the present invention;

Figure 3 is a plan view of the light source fixing device of the present invention;

4 is a schematic view showing the structure in which an optical element is fixed in a light source fixing device of a projection apparatus of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described in detail below with reference to the accompanying drawings.

Referring to Figures 2 and 3, the present invention provides an optical fixture 200 for compactly securing a plurality of optical components thereon to achieve a reduction in optical fixture 200 as much as possible. And the external dimensions of the projection apparatus including the optical fixture 200, it is to be noted that the optical element described in the present invention is a collective term for a solid state light source, an optical lens, a lens, and the like. The optical fixing device 200 is further described below. The optical fixing device 200 includes a light source fixing portion 210, a first mirror fixing portion 220, a second mirror fixing portion 230, a second light combining member fixing portion 240, and a condensing lens fixing. The portion 250 is preferably a plurality of solid-state light sources arranged horizontally in a straight line, the light source fixing portion 210 is used for fixing a plurality of solid-state light sources, and the solid-state light source may be a laser light source or RGB three. Color LED light source (will be further explained later). The second mirror fixing portion 230 is configured to fix the second mirror disposed corresponding to a part of the solid-state light source. As an implementable manner, the light emitted by a part of the solid-state light source is reflected by the second mirror, and the other part of the solid-state light source is emitted. The light is incident directly onto the second light-combining element (described further below) or/and a concentrating lens (described further below), that is, preferably, the number of second mirrors is less than that of the solid state light source Quantity to save space and save costs. In addition, the solid-state light source may also be disposed in one-to-one correspondence with the second mirror. However, for a case where the number of solid-state light sources is small, this may be disadvantageous for obtaining a high luminance; and for a solid-state light source, the number is larger. In this case, since a large number of mirrors need to be arranged, this may cause the optical fixing device 200 to be large in size, which is also disadvantageous for miniaturization of the light source device. The second light combining element fixing portion 240 is for fixing at least one second light combining element. As a preferred embodiment, when the number of the solid state light sources is large, in order to make the size of the optical fixing device 200 as small as possible, each The solid state light sources are arranged close to each other, since the projection of the second light combining element generally on the arrangement plane of the solid state light source covers at least one solid state light source, then, for example, a portion of the solid state light source covered by the projection passes through the second The light emitted by the light-emitting element transmits a portion of the solid-state light source that is reflected by the second mirror and then reflected by the second light-combining element, but it is understood that the number of solid-state light sources is small or between the solid-state light sources. In the case of a large interval or the like, the second light combining element may also transmit only the unreflected light of the solid state light source or only the light reflected by the first mirror. The condensing lens fixing portion 250 is for fixing the condensing lens, and the condensing lens converges the light passing through the second illuminating element. It is easy to understand that the second illuminating element is preferably arranged such that its center is close to the condensing light. The optical axis of the lens, in addition, when the light of a part of the solid-state light source is directly transmitted through the second light-combining element, the concentrating lens also converges the directly emitted light.

In order to configure a plurality of fixed light sources, the optical fixture 200 is provided with a first mirror fixing portion 220 opposite to the second mirror fixing portion 230, and the first mirror and the solid state light source fixed by the first mirror fixing portion 220 In one-to-one correspondence, the optical fixing device 200 further includes a first light combining element fixing portion 260 for fixing the first light combining element, the first light combining element further reflecting the light reflected by the first mirror to the second light combining element And further transmitted to the collecting lens via the second light combining element.

In order to configure a plurality of solid state light sources, and the optical elements are arranged reasonably, the second mirror is provided in plurality, and in the horizontal direction, the first mirror and the second mirror are respectively located on the first side of the second light combining element and a second side, wherein the first mirror and the first light combining element on the first side of the second light combining element are fixed to be perpendicular to the second light combining element, respectively, on the second side of the second light combining element The second mirror is fixed in parallel with the second light combining element, and the second light combining element has an acute angle with the horizontal plane of 45°. By arranging, the first mirror and the second mirror are respectively arranged opposite to each other in the second light combining element, so as to light the solid light source farther away from the second light combining element and the collecting lens in the horizontal direction. The second light combining element reflects, specifically, the first mirror and the second mirror located on the first side and the second side of the second light combining element respectively emit light in a vertical direction of the corresponding solid light source The light reflected in the horizontal direction is further reflected by the second light combining element and reflected by the first light combining element and transmitted by the second light combining element, thereby obtaining a plurality of light rays that are incident on the collecting lens vertically. .

In order to ensure high relative positional accuracy of the optical element, the third mirror is fixed to other components than the optical fixture 200. As a further optimization, the optical fixture 200 further includes a third for fixing the third mirror. The three-mirror fixing portion 270, when the solid-state light source adopts the RGB three-color LED light source, at this time, the second light-combining element can adopt a dichroic color chip, and the mixed light of the RGB three-color LED light source after being concentrated by the collecting lens is used as a follow-up A projection light source, the third mirror reflects and emits the mixed light. When the solid-state light source uses a laser light source or an RGB three-color LED light source as the third mirror excitation light to excite the wavelength conversion material to generate the laser light, at this time, the second light combining element can adopt a polarizing plate, and therefore, the optical fixing device 200 is apart from The third mirror fixing portion 270 includes the above-described color wheel fixing portion (not shown) for fixing the color wheel as a wavelength conversion material, and the third mirror reflects the concentrated excitation light to the color wheel. The laser generated by the wavelength converting material is mixed with the unabsorbed excitation light as a subsequent projection light source. In this way, the light source fixing portion 210, the first mirror fixing portion 220, the second mirror fixing portion 230, the second light combining element fixing portion 240, and the collecting lens fixing portion 250 are provided on the optical fixing device 200 as a whole. The first light combining element fixing portion 260, the third mirror fixing portion 270 and the optional color wheel fixing portion reduce the relative position error caused by the optical elements being respectively mounted on different fixing members. The risk, in turn, reduces production costs.

As another preferred embodiment, the third mirror fixing portion 270 is provided with a rib extending toward the color wheel, and the third mirror fixed to the rib is inclined with respect to the color wheel. By arranging the third mirror obliquely with respect to the color wheel, the concentrated excitation light is reflected by the third mirror to the excited surface of the color wheel by a small spot, thereby improving the excitation efficiency of the excitation light.

As an implementable manner, the optical fixing device 200 is disposed in a substantially funnel shape, that is, one end is large and the other end is gradually smaller, so that the optical fixing device 200 has a smaller size under the premise of fixing a plurality of in-line solid-state light sources. The outer dimensions of the light source fixing portion 210 are disposed at the funnel opening, and the first mirror fixing portion 220 and the second mirror fixing portion 230 are respectively disposed on a pair of inner inclined surfaces of the funnel, and the collecting lens fixing portion 250 is placed on the neck of the funnel, The first light combining element fixing portion 260 and the second light combining element fixing portion 240 are disposed between the funnel opening and the neck portion, and the third mirror fixing portion 270 and the color wheel fixing portion are disposed at an end opposite to the funnel opening, In the horizontal direction, although the size of the end portion is larger than that of the neck portion, the size of the end portion is still smaller than that of the funnel opening. As a whole, the optical fixing device 200 is still similar to the inverted funnel shape, and the overall shape of the optical fixing device 200. It is also very compact. A plate member 280 is disposed at the funnel opening, and a plurality of through holes 281 are defined in the plate member 280, and the solid state light source is fixed in the through hole 281. Preferably, the plate member 280 is a horizontal panel, and the plurality of through holes 281 are located on the same horizontal surface of the solid-state light source, thereby ensuring accurate positioning of the solid-state light source.

In order to obtain a better fixing effect on the optical element, the first mirror fixing portion 220, the second mirror fixing portion 230, the third mirror fixing portion 270, the first light combining member fixing portion 260, and the second light combining member are fixed. At least one, but preferably all, of the fixed portions 240 respectively include at least two bosses 290 with a hollow portion 291 for filling the adhesive between the two adjacent bosses 290. Therefore, the hollow portion 291 provides sufficient space for filling the adhesive, thereby ensuring that there is sufficient adhesive to fix the light source member, and the boss 290 can also provide a precise fixed reference surface for the optical member and avoid the adhesive. The spillover.

The optical fixing device 200 described in the above embodiments is integrally formed. Specifically, the optical fixing device 200 is a structural part formed by molding or machining, and the precision requirement of the assembly position of the optical component only needs to be clamped once and matched with numerical control processing. The processing of the center is ensured. The manufacturing process of the optical fixing device 200 will be described below by taking FIG. 3 as an example. First, the reference surface A of the light source fixing portion 210 is processed based on the positioning of the condensing lens fixing portion 250, and then the second light combining element fixing portion 240, the first mirror fixing portion 220, the second mirror fixing portion 230, and the second processing unit are processed. The fixed reference surface of the light combining element fixing portion 260 and the third mirror fixing portion 270 is finally fixed to the fixed reference surface of the color wheel fixing portion. Depending on the machining accuracy of the CNC machining center itself, the dimensional accuracy of the optical fixture 200 for mounting and fixing the optical device can be well controlled to meet the requirements for use.

In order to more specifically explain the present invention, the above embodiments will be described in detail below by taking five solid-state light sources as shown in FIG. 4 as an example and referring to FIGS. 2 and 3. Five through holes 281 as the light source fixing portion 210 are opened on the plate member 280 at the funnel opening of the optical fixing device 200 of the substantially inverted funnel shape, and one blue laser is fixedly mounted in each of the five through holes 281. The light sources 310, 311, 312, 313, 314, wherein, preferably, the blue laser light sources 310, 311, 312 have a first polarization state, and the blue laser light sources 313, 314 have a second polarization state, located at the optical fixture 200. A first mirror 320 and two second mirrors 321 are fixedly mounted on the first mirror fixing portion 220 on the left inner inclined surface and the right inner inclined surface, respectively, and the left inclined surface and the right side are connected The second light combining element fixing portion 240, the first light combining element fixing portion 260, and the condensing lens fixing portion 250 are disposed on the bottom wall of the inner inclined surface, and the condensing lens fixing portion 250 is located at the second light combining element fixing portion 240 and The first light-collecting element fixing portion 260, that is, the collecting lens 340 is disposed at a position of the substantially funnel neck portion, wherein the second light-combining member fixedly assembled on the second light-combining element fixing portion 240 is a polarizing plate 330. The first side of the polarizer 330 faces the second opposite The first light combining element 350 faces the first mirror 320, the first light combining element 350 adopts a mirror, and the polarizing plate 330 has an acute angle of 45° with the horizontal plane, and the first mirror 320 and the first mirror The light combining elements 350 are fixed to be perpendicular to the polarizing plate 330, respectively, and the excitation light emitted from the blue laser light sources 313 and 314 in the vertical direction is horizontally reflected by the second reflecting mirror 321, and then on the first side of the polarizing plate 330. Further reflected vertically, the excitation light emitted by the blue laser light source 310 in the vertical direction is horizontally reflected by the first mirror 320, and then vertically reflected by the first light combining element 350 and further passed through the polarizing plate. The second side of the 330 is transmitted into the collecting lens 340. For the other portions of the blue laser light sources 311 and 312, the blue laser light source 312 is transmitted through the second side of the polarizing plate 330 directly into the collecting lens 340 without reflection. The color laser light source 311 is directly incident on the condensing lens 340 without being reflected and transmitted by the polarizing plate 330. Therefore, the light source fixing portion 210, the first mirror fixing portion 220, the second mirror fixing portion 230, and the first light combining element Fixing portion 260, polarizing plate solid The specific number and position of the portion 240 and the condensing lens fixing portion 250 may be set according to the number and arrangement of the blue laser light sources. For example, when the blue laser light source 310 is cancelled, correspondingly, it is unnecessary. The first mirror fixing portion 220 and the light combining member fixing portion 260 are provided, but this reduces the number of solid-state light sources, thereby being disadvantageous for obtaining a high light-emitting luminance. After each excitation light is incident on the condensing lens 340 and concentrated by the condensing lens 340, the concentrated excitation light is directed to the third mirror 360, and the third mirror 360 is fixed to the funnel facing the left side. The third mirror 360 extends toward the color wheel 370 on the rib extending from the opposite end of the mouth as the third mirror fixing portion 270. The color wheel 370 is fixedly coupled to the driving device 371 and driven at the driving device 371. The lower rotation operation is performed, and the driving device 371 is fixed at the above end by the boss type opening, thereby fixing the color wheel 370. The excitation light reflected by the third mirror 360 is incident on the excited surface of the color wheel 370 in a small spot, and the excited surface is uniformly distributed as a wavelength conversion material, such as a GRBW four-color phosphor, and then the phosphor The laser light is generated under the excitation of the blue laser and mixed to form a projection light source for subsequent use. Preferably, the first mirror fixing portion 220, the second mirror fixing portion 230, the first light combining element fixing portion 260, the third mirror fixing portion 270, and the polarizing plate fixing portion 240 respectively have at least two bosses 290 A hollow portion 291 for filling the adhesive is disposed between adjacent two bosses 290, and at least two bosses 290 of each fixing portion collectively form a fixed reference surface for fixing the respective optical element.

The present invention also provides a projection apparatus, and in particular, a micro-projection apparatus requiring a minimum external dimension, which employs the optical fixture 200 of any of the above embodiments, with reference to the optical fixture 200 described above. The advantage is that since the outer dimensions of the optical fixing device 200 are compact and the outer dimensions of the projection device are reduced, the relative positional accuracy of the fixed optical components in the optical fixing device 200 is high, thereby improving the projection picture quality of the projection device. In addition, the production cost of the projection device is correspondingly reduced.

In one embodiment, a light source device includes a light source queue, an aggregation system, a third mirror, and a wavelength conversion device, the wavelength conversion device including a color wheel and a driving device, wherein:

The light source queue is formed by a plurality of light sources arranged in a line;

The aggregation system is located in a light exiting direction of the light source queue, and collects light emitted from the light source queue to a third mirror;

The third mirror reflects the concentrated light to the color wheel;

The color wheel is excited by the light reflected by the third mirror to generate a laser beam;

The driving device includes a driving portion and a rotating shaft, the rotating shaft is fixedly connected to the color wheel, and the driving portion drives the rotating shaft to rotate, thereby driving the color wheel to rotate;

The axis of rotation of the drive device is parallel to the queue of light sources. Parallel to the axis of rotation of the drive device, it can be understood that the axis of rotation of the drive device is substantially parallel to the queue of light sources.

The direction of the axis of rotation is also the direction of the central axis of the drive and is also the direction of the central axis of the wavelength conversion device.

Since the light source queue has a font shape and a relatively long length, in this embodiment, the rotation axis of the driving device is substantially parallel to the queue of the inline light source, and the components are arranged in the parallel direction of the light source queue instead of the other directions in the three-dimensional space. The length of the queue of the in-line light source is long, so that the volume of the external rectangular parallelepiped of the light source device can be reduced. The external rectangular parallelepiped of the light source device refers to the smallest rectangular parallelepiped that can surround the light source device. It is easy to understand that the volume of the housing that fixes or houses the light source device can be reduced.

In one embodiment, the light emitted by the light source queue is concentrated in the same plane to the third mirror, and the light emitted by the light source queue is emitted from the light path to the third mirror. Located in the same plane; or, the formed optical path is substantially in a parallel plane and the distance between the parallel planes is small, for example, less than 1 cm; or the formed optical path is substantially located at the intersecting plane and the parallel The angle of the plane is small, for example, less than 30 degrees.

In one embodiment, more than 50% of the projection of the wavelength conversion device on the line on which the light source queue is located overlaps the light source queue. In this embodiment, the length of the light source device in the direction of the light source queue is saved.

In one embodiment, the projection of the wavelength conversion device on a line on which the light source queue is located is substantially on the light source queue.

In one embodiment, the color wheel is perpendicular to the axis of rotation, and the intersection of the plane of the color wheel and the light source queue is located substantially in the middle of the light source queue.

In one embodiment, the third mirror and the drive device are located on the same side of the color wheel. This embodiment can avoid the superposition of the length of the wavelength conversion device and the distance from the third mirror to the color wheel to cause an increase in the length of the light source device in the direction of the rotation axis, thereby contributing to reducing the volume of the light source conversion. Moreover, the light reflected back by the color wheel can continue to be reflected by the third mirror to the color wheel, so that the utilization of light can be improved.

In one embodiment, the rotating shaft is elongated relative to the driving portion, and the third mirror is at least partially located in a space surrounded by the driving portion and the rotating shaft and the color wheel. In this embodiment, the space enclosed by the driving portion and the rotating shaft and the color wheel is effectively utilized, the length of the light source device in the light emitting direction of the light source queue is reduced, and the volume of the light source device can be reduced. .

In one embodiment, the light source queue includes a first light source that emits first light, and a second light source that emits second light, the number of the first light sources being greater than or equal to one, And the number of the second light sources is greater than or equal to one;

The collecting system includes a second light combining element, a second mirror, and a collecting lens;

The second light combining element is located on an exiting light path of the at least one first light source, and the second mirror is disposed on a side of the second light combining element;

The second light combining element has a characteristic of transmitting the first light and reflecting the second light, and the second light combining element combines the first light and the second light incident thereon Light;

The first light emitted by the at least one first light source is directly transmitted through the second light combining element, and the second light emitted by the at least one second light source is reflected by the second mirror to the second light combining An element, and reflected by the second light combining element to the collecting lens;

The condensing lens is located on an outgoing light path of the second light combining element, and the condensing lens concentrates light incident thereon to the third mirror.

In this embodiment, the second light combining element is located at the exiting optical path of the at least one first light source, and the first combined light transmits the first light incident thereon, so that the position of the light source queue opposite to the second light combining element can be avoided. Leaving a neutral position without a light source allows for a tight arrangement of the light sources on the light source queue.

In one embodiment, the number of the second mirrors is greater than one, and the second mirrors are arranged in a stepped second mirror array, each of the second mirrors being associated with one of the second light sources Correspondingly, the second light emitted by the corresponding second light source is reflected to the second light combining element, and the second mirror array is gradually extended toward the second light combining element along the light emitting direction of the light source queue Close together.

The second light source that is emitted by the second mirror and reflected to the second light combining element is arranged in the tail or the head of the light source queue instead of the middle of the light source queue; it can be understood that if the second light source of the type contains more The second source of the class is arranged in a row or in a row at the end of the queue or the head of the queue.

In one embodiment, the aggregation system further includes a first mirror and a first light combining element;

The first mirror is disposed on a side of the second light combining element, and the second mirror is located on an opposite side of the second light combining element;

The first light combining element is disposed to intersect with the second light combining element, the first light combining element and the first mirror are located on the same side of the second light combining element, and the first combination The light element is disposed between the exiting optical paths of the two light sources in the light source queue, and does not block the exit of the first light of the first light source; the first light combining element has a characteristic of reflecting the first light;

The first light emitted by the at least one of the first light sources is reflected by the first mirror to the first light combining element and continues to be reflected by the first light combining element to the collecting lens.

The first light source that is emitted by the first mirror and reflected by the first mirror to the first light combining element is arranged in the tail or the head of the light source queue instead of the middle of the light source queue; it is understood that if the first light source of the type contains more The first light source of the type is arranged in a row or in a row at the end of the queue or the head of the light source.

In this embodiment, the first light emitted by a part of the first light source (for example, the first light source of the queue of the inline light source or the first light source of the team head) is reflected by the first mirror to the first light combining element, so that the font can be reduced. The spot of the aligned light source queue.

Moreover, in this embodiment, the first light combining element is disposed between the exiting optical paths of the two light sources in the light source queue, and the light of the light source queue may not be blocked, so that the second light combining element may be opposite. Arranging the light source at the position of the light source queue helps to facilitate the compact arrangement of the light sources in the light source queue.

In addition, since the first light combining element reflects the light of the first mirror and is disposed between the exit light paths of the two light sources in the light source queue, it is convenient for the first light combining element to face the light source queue. One side is provided with a support for fixing the first light combining element and the second light combining element, and the pillar can be supported and fixed with the entire area of the reverse surface of the reflecting surface of the first light combining element, and a small area of the second light combining element The phase support is fixed, which is based on the emission of light that does not block the light source queue.

In one embodiment, the first light combining element and the second light combining element are T-shaped. The T-shape consists of two right angles, one of which is facing the light source queue.

In one embodiment, the number of the first mirrors is greater than one, the first mirrors are arranged in a stepped first mirror array, and each of the first mirrors is coupled to one of the first light sources. Correspondingly, the first light emitted by the corresponding first light source is reflected to the first light combining element, and the first mirror array is gradually extended toward the first light combining element along the light emitting direction of the light source queue Close together.

In one embodiment, the first light source further includes a light source that emits the first light from a channel between the first mirror and the first light combining element, the first light emitted by the light source is transmitted through the light The second light combining element is incident on the condensing lens or directly incident on the condensing lens without passing through the second light combining element.

Since in some micro-projection devices, the light source device needs to meet a small volume requirement, even if the length of the in-line light source array including five light sources may not exceed 5 cm; the light source device contains more optical components. Therefore, it is necessary to distribute a large number of optical elements in a relatively small space, and it is also necessary to leave a certain space for the operations of bonding/fixing optical elements; this embodiment helps to meet these needs.

In one embodiment, the first light emitted by the first light source and the second light emitted by the second light source have different polarization states;

The second light combining element is a polarizing plate that transmits light of one of the first light and the second light and reflects light of another polarization state.

In one embodiment, a light source device includes:

a light source queue formed by a plurality of light sources arranged in a line; the light source queue includes a first light source and a second light source, the first light source exiting the first light, and the second light source exiting the second light;

a first light combining element having a characteristic of reflecting the first light, and a second light combining element having a characteristic of transmitting the first light and reflecting the second light ;

The second light combining element is disposed on an outgoing light path of at least one of the first light sources located in a middle portion of the light source queue, and transmits the first light emitted by the at least one first light source to the collecting lens;

The first light combining element and the second light combining element are disposed to intersect with each other, and the first light combining element is disposed between the exit light paths of the two light sources in the light source queue, and does not block the light source queue Emergence of light;

a first mirror disposed on a first side of the first light combining element and the second light combining element, and the first light combining element being located on a same side of the second light combining element The first light emitted by the at least one first light source at the first end of the light source queue is reflected to the first light combining element, and the first light combining element reflects the first light to the collecting lens;

a second mirror disposed on the second side of the first light combining element and the second light combining element, and reflecting second light emitted by the at least one second light source located at the second end of the light source queue to the a second light combining element, the second light combining element reflects the second light to the collecting lens;

The collecting lens is configured to collect light incident thereon.

In this embodiment, the first mirror and the second mirror respectively reflect the first light and the second light located at both ends of the light source queue to the first light combining element and the second light combining element, and further complement the reflection to the collecting lens. The size of the spot incident on the condensing lens can be reduced; since the first illuminating element is disposed between the exiting optical paths of the two light sources in the light source queue, the light of the light source queue is not blocked, so At least one of the first light sources located in the middle of the light source queue may transmit the second light combining element to be incident on the collecting lens, so that the position of the light source queue opposite to the second light combining element may be prevented from leaving a neutral position without setting The light source can achieve a close arrangement of the light sources on the light source queue.

In one embodiment, the first light combining element and the second light combining element are T-shaped.

In one embodiment, the first light source further includes a light source that emits the first light from a channel between the first mirror and the first light combining element, the first light emitted by the light source is transmitted through the light The second light combining element is incident on the condensing lens or directly enters the condensing lens without passing through the second light combining element.

The light source device in one embodiment provided herein is described below with reference to FIG.

In one embodiment, a light source device includes: a first light source 310, a first light source 311 and a first light source 312, and a second light source 313 and a second light source 314; further comprising a first light combining element 350, a second The light combining element 330, the first reflecting mirror 320, the two second reflecting mirrors 321, the collecting lens 340, the third reflecting mirror 360, and the wavelength conversion device. The wavelength conversion device includes a driving device 371 and a color wheel 370.

The first light sources 310, 311, and 312 emit the first light of the first polarization state (eg, the S polarization state), and the second light sources 313 and 314 emit the second light of the second polarization state (eg, the P polarization state); the first polarization state Different from the second polarization state. The first light sources 310, 311 and 312 and the second light sources 313 and 314 are all blue laser light sources.

Each light source is arranged in a line of light source queues. The first light source 310, the first light source 311, and the first light source 312 are continuously arranged, and the second light source 313 and the second light source 314 are continuously arranged.

In this embodiment, the second light combining element 330 is a polarizing plate, and the polarizing plate 330 is disposed on the outgoing light path of the first light source 312, and transmits the first light emitted by the first light source 312 to the collecting lens 340. The second light combining element 330 is disposed at an angle of 45 degrees to the light source queue.

The first light combining element 350 is a mirror and is disposed in a T shape with the second light combining element 330. The first light combining element 350 and the second light combining element 330 intersect at a central portion of the second light combining element. The first light combining element 350 is disposed between the first light source 311 and the outgoing light path of the first light source 312, and does not block the light of the first light source 311 and the first light source 312.

The first mirror 320 reflects the first light emitted by the first light source 310 to the first light combining element 350, and the first light combining element 350 reflects the first light to the collecting lens 340.

The two second mirrors 321 respectively reflect the second light emitted from the second light source 313 and the second light source 314 to the second light combining 330, and the second light combining element reflects the second light to the collecting lens 340.

The two second mirrors 321 are arranged in a stepped second mirror array. The second mirror array gradually moves toward the second light combining element along the light emitting direction of the light source queue.

The first light emitted from the first light source 311 is incident on the condensing lens 340 through the passage between the first mirror 320 and the first light combining element 350.

The condenser lens 340 concentrates the light incident thereon to the third mirror 360. The light-emitting direction of the condensing lens 340 is substantially the same as the light-emitting direction of the light source queue.

The third mirror 360 reflects the concentrated light to the color wheel 370, exciting the wavelength converting material on 370 to produce a laser.

The driving device 371 includes a driving portion and a rotating shaft. The rotating shaft is fixedly connected to the color wheel 370, and the driving portion drives the rotating shaft to rotate, thereby driving the color wheel 370 to rotate.

The rotational axis of the drive unit 371 is parallel to the light source queue.

The third mirror 360 and the driving device 371 are located on the same side of the color wheel 370.

The rotating shaft is elongated relative to the driving portion, and the third reflecting mirror 360 is at least partially located in a space surrounded by the driving portion and the rotating shaft and the color wheel 370.

The projection of the wavelength conversion device on the line on which the light source queue is located is substantially on the light source queue.

a light source queue, an aggregation system, a third mirror, and a wavelength conversion device, the wavelength conversion device comprising a color wheel and a driving device, wherein:

The third mirror reflects the concentrated light to the color wheel;

In the above description of the present invention, it is to be understood that the orientation or positional relationship of the terms "upper", "lower", "left", "right", "vertical", "horizontal", "bottom", etc. The present invention and the simplification of the description are based on the orientation or positional relationship shown in the drawings, and are not intended to indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot It is understood to be a limitation of the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. A number of simple derivations or substitutions may be made by those skilled in the art without departing from the inventive concept.

Claims

1. An optical fixture, characterized by comprising:

a light source fixing portion for fixing a plurality of solid state light sources;

a second mirror fixing portion corresponding to at least a portion of the plurality of solid state light sources, the second mirror fixing portion for fixing the second mirror;

a second light-receiving element fixing portion for fixing at least one second light-combining element, the second light-combining element transmitting part of the solid-state light source and not reflecting light or/and reflecting by the second mirror The reflected light;

A condensing lens fixing portion for fixing the condensing lens, the condensing lens condensing light passing through the second combining element.

2. The optical fixture of claim 1 wherein:

The optical fixing device further includes a first mirror fixing portion for fixing the first mirror and a first light combining member fixing portion for fixing the first light combining member, the first light combining member Light reflected by a mirror is further reflected to the second light combining element.

3. The optical fixture of claim 2, wherein:

The plurality of second mirrors are disposed, the light source fixing portion is disposed on a horizontal surface, and the first mirror and the first joint on the first side of the second light combining member are horizontally arranged The light elements are fixed to be perpendicular to the second light combining elements, respectively, and the second mirror located on the second side of the second light combining elements is fixed in parallel with the second light combining elements, and The second combination

4. The optical fixture of claim 1 wherein:

The optical fixing device further includes a third mirror fixing portion for fixing the third mirror and a color wheel fixing portion for fixing the color wheel, the third mirror to be the concentrated excitation light Reflecting to the color wheel to excite the wavelength converting material of the color wheel, the solid state light source being a laser light source or an LED light source.

The optical fixture according to any one of claims 1 to 4, characterized in that:

At least one of the first mirror fixing portion, the second mirror fixing portion, the third mirror fixing portion, the first light combining element fixing portion, and the second light combining element fixing portion At least two bosses are included with a hollow portion for filling the adhesive between adjacent ones of the bosses.

6. Projection device, characterized in that:

The projection apparatus includes the optical fixture of any of claims 1-5.

A light source device comprising a light source queue, an aggregation system, a third mirror, and a wavelength conversion device, the wavelength conversion device comprising a color wheel and a driving device, wherein:

The third mirror reflects the concentrated light to the color wheel;

The axis of rotation of the drive device is parallel to the queue of light sources.

The light source device according to claim 7, wherein the light source queue comprises a first light source and a second light source, the first light source emits first light, and the second light source emits second light, The number of the first light sources is greater than or equal to one, and the number of the second light sources is greater than or equal to one;

The light source device according to claim 8, wherein the number of the second mirrors is larger than one, and the second mirrors are arranged in a stepped second mirror array, each of the second mirrors The mirror is disposed corresponding to one of the second light sources, and reflects the second light emitted by the corresponding second light source to the second light combining element, and the second mirror array emits light along the light source queue The direction gradually approaches the second light combining element.

The light source device according to claim 8, wherein the focusing system further comprises a first mirror and a first light combining element;

The first light combining element is disposed to intersect with the second light combining element, the first light combining element and the first mirror are located on the same side of the second light combining element, and the first combination The light element is disposed between the exiting optical paths of the two light sources in the light source queue, and does not block the light of the light source queue; the first light combining element has a characteristic of reflecting the first light;

The light source device according to claim 8, wherein the first light emitted by the first light source and the second light emitted by the second light source have different polarization states;

12. A light source device, comprising:

The collecting lens is configured to collect light incident thereon.

The light source device according to claim 12, wherein the number of the first mirrors is larger than one, and the first mirrors are arranged in a stepped first mirror array, each of the first mirrors The mirror is disposed corresponding to one of the first light sources, and reflects the first light emitted by the corresponding first light source to the first light combining element, and the first mirror array emits light along the light source queue The direction gradually approaches the first light combining element.