TWI556007B - Optical system - Google Patents

Description

Optical system

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an optical system, and more particularly to an optical system for introducing a beam of light into a ridge-type optical system.

Please refer to FIG. 1 , which shows a conventional optical system. The optical system 100 includes a light source 10 , a mirror 20 , a focusing lens assembly 30 , a roof ridge optical system 40 , and a projection mirror assembly . 50. The roof ridge optical system 40 includes a ridge type crucible 42, a first triangular cymbal 44, and a second triangular cymbal 46. The light source 10 includes an Organic Light-emitting Diode (OLED). The light beam M emitted from the light source 10 is reflected by the mirror 20 and then passed through the focusing mirror group 30, and then enters the roof ridge optical system 40, and the light beam M enters the roof ridge. The mirror optical system 40 sequentially passes through the second triangular ridge 46 and the first triangular cymbal 44, and enters the ridge type 稜鏡42 via the reflecting surface 43 of the ridge type 稜鏡42, and then sequentially passes through a light exit/entry surface. 45. After the roof ridge 47 and the reflecting surface 43 are reflected, the light exit/entry surface 45 exits the roof ridge 42 and enters the projection mirror 50, and is then projected by the projection mirror 50.

In the above configuration, it is necessary to adjust the optical axis of the reflected light beam by the lens holder of the mirror 20 to allow the light beam to enter the roof ridge optical system 40, but this adjustment work is not easy, it takes a lot of time, and since the reflection is adjusted After the light, the fixing of the seat of the mirror 20 is sometimes not fixed, and it takes a lot of time to process, which is a waste of time.

In view of this, an embodiment of the optical system of the present invention includes a ridge type raft, a first triangular ridge, a second triangular ridge, a third triangular ridge, and a light source. The ridge type raft has a first light exit/entry surface, a ridge surface and a first reflection surface; the first triangular ridge has a film surface and a second reflection surface, and the second reflection surface is adjacent to the first reflection a second triangular raft is disposed adjacent to the film surface and has a second light exit/entry surface; the third triangular raft is disposed adjacent to the second light exit/entry surface and has a third light exit/inlet And a third reflecting surface, wherein when the light source emits a light beam from the third light exit/entry surface into the third triangular shape, the light beam is totally reflected by the third reflective surface and passes through the second light output/ Entering the surface and entering the second triangular ridge, and then the light beam sequentially passes through the film surface and the second reflective surface to pass the first triangular ridge, the light beam enters the ridge type 稜鏡, and then the light beam is sequentially The first light exit/entry surface, the ridge surface and the first reflective surface are totally reflected, and then emitted from the first light exit/entry surface.

Another embodiment of the optical system of the present invention includes a ridge type raft, a first triangular ridge, a second triangular ridge, a third triangular ridge, and a light source. The light source emits a light beam that passes through the third triangular ridge, the second triangular ridge and the first triangular ridge without being reflected, and enters the ridge type raft, and the ridge type 稜鏡After the reflection, leave the roof ridge.

In the optical system of the present invention, since the third triangular ridge is disposed, the light beam from the light source is directly incident on the ridge type ridge at a predetermined angle by the third triangular ridge, and no additional adjustment is required, thereby saving assembly. Time and process.

The above and other objects, features, and advantages of the invention will be apparent from

10‧‧‧Light source

20‧‧‧Mirror

30‧‧‧ Focusing lens group

40‧‧‧ Roof Ridge Optical System

42‧‧‧ Roof ridge

43‧‧‧reflecting surface

44‧‧‧First Triangle

45‧‧‧Light out/on

46‧‧‧The second triangle

47‧‧‧ roof ridge

50‧‧‧Projection mirror

100‧‧‧Optical system

200‧‧‧Light source

300‧‧‧focus lens group

400‧‧‧ Roof Ridge Optical System

420‧‧‧ roof ridge

422‧‧‧First light out/on

424‧‧‧ roof ridge

426‧‧‧First reflective surface

440‧‧‧First Triangle

442‧‧‧Second reflective surface

444‧‧‧film surface

460‧‧‧The second triangle

462‧‧‧Second light exit/entry

480‧‧‧ Third Triangle

482‧‧‧ Third light out/on

484‧‧‧ Third reflecting surface

500‧‧‧Projection mirror

1000‧‧‧Optical system

M‧‧‧beam

L‧‧‧beam

P‧‧‧ optical axis

Figure 1 is a schematic illustration of a conventional optical system.

Figure 2 is a schematic illustration of the optical system of the present invention.

Please refer to Fig. 2, which shows the optical system of the present invention. The optical system 1000 of the present invention includes a light source 200, a focusing mirror assembly 300, a roof ridge optical system 400, and a projection mirror assembly 500.

The roof ridge optical system 400 includes a ridge type 420, a first triangular ridge 440, a second triangular ridge 460, and a third triangular ridge 480. The roof sill 420 has a first light exit/entry surface 422, a ridge surface 424, and a first reflective surface 426. The first triangular ridge 440 has a second reflecting surface 442 and a film surface 444 disposed adjacent to the first reflecting surface 426. The second triangular crucible 460 is disposed adjacent to the film surface 444 of the first triangular crucible 440 and has a second light exit/entry surface 462, and the third triangular crucible 480 is adjacent to the second optical output of the second triangular crucible 460. The entry surface 462 has a third light exit/entry surface 482 and a third reflective surface 484.

The light source 200 emits a light beam L which is incident on the focusing lens group 300 in a state parallel to the optical axis P of the focusing mirror group 300, and is adjusted by the focusing lens group 300, and then the light beam L is from the third light exit/entry surface 482. After entering the third triangular ridge 480, the light beam L is totally reflected by the third reflecting surface 484 and then passes through the second light exit/entry surface 462 to enter the second triangular ridge 460, and then the light beam L sequentially passes through the film surface 444 and the first After the second reflecting surface 442 passes through the first triangular ridge 440, the light beam L enters the roof ridge 420, and then the light beam is totally reflected by the first light exit/entry surface 422, the ridge surface 424 and the first reflective surface 426. The first light exit/entry surface 422 is emitted, and then the light beam L is projected through the projection mirror group 500.

In the present embodiment, the third triangular ridge 480 is bonded to the second triangular ridge 460 in an adhesive manner. In addition, the light source 200 includes an organic light emitting diode. Optical system of the invention 1000 can be applied to the measurement system. For example, light emitted from the organic light emitting diode panel as the light source 200 is projected through the optical system 1000 of the present invention, and the user can view the content displayed by the panel via the projection mirror set 500.

Although in the above embodiment, the light beam L is adjusted by the focusing lens group 300, the present invention is not limited thereto. In another embodiment, the light beam L emitted from the light source 200 passes through the focusing mirror group 300, the roof ridge optical system 400. After the projection mirror set 500, the focus can also be adjusted by the projection mirror set 500.

Thus, since the third triangular ridge 480 is matched with other optical elements in the roof ridge optical system 400, the incident light is reflected by the third reflecting surface 484 of the third triangular ridge 480, and then passes through the second triangular ridge 460. Since the first triangular ridge 440 and the ridge type 420 are incident on the projection mirror group 500, it is only necessary to allow the light beam to enter the third triangular ridge 480 during assembly, and the mirrorless adjustment is required, so that the assembly man-hour can be shortened.

The present invention has been disclosed in the above embodiments, but it is not intended to limit the scope of the present invention. Any one of ordinary skill in the art to which the present invention pertains may be modified and retouched without departing from the spirit of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

200‧‧‧Light source

300‧‧‧focus lens group

400‧‧‧ Roof Ridge Optical System

420‧‧‧ roof ridge

422‧‧‧First light out/on

424‧‧‧ roof ridge

426‧‧‧First reflective surface

440‧‧‧First Triangle

442‧‧‧Second reflective surface

444‧‧‧film surface

460‧‧‧The second triangle

462‧‧‧Second light exit/entry

480‧‧‧ Third Triangle

482‧‧‧ Third light out/on

484‧‧‧ Third reflecting surface

500‧‧‧Projection mirror

1000‧‧‧Optical system

L‧‧‧beam

P‧‧‧ optical axis

Claims (10)

An optical system comprising: a ridge type raft having a first light exit/entry surface, a ridge surface and a first reflective surface; and a first triangular ridge having a film surface and a second reflecting surface The second reflecting surface is disposed adjacent to the first reflecting surface; a second triangular ridge is disposed adjacent to the film surface and has a second light exit/entry surface; and a third triangular ridge is disposed on the second light a third light exit/entry surface and a third reflective surface adjacent to the exit/entry surface; and a light source emitting a light beam, wherein the light beam enters the third triangular shape from the third light exit/entry surface After the light beam is totally reflected by the third reflective surface, passes through the second light exit/entry surface and enters the second triangular pyramid, and then the light beam sequentially passes through the film surface and the second reflective surface to pass the first After a triangular ridge, the light beam enters the ridge type ridge, and then the light beam is sequentially totally reflected by the first light exit/entry surface, the ridge surface and the first reflective surface, and the first light exit/ Injected into the face. The optical system of claim 1, further comprising a focusing lens group, wherein the light beam is emitted by the light source and passes through the focusing lens group, and then the light beam enters the third light exiting/into the surface Three triangles. The optical system of claim 2, wherein the focusing lens group has an optical axis, and the light beam is emitted from the light source and enters the focusing lens group in a state parallel to the optical axis. The optical system of claim 2, wherein the focusing lens group focuses the light beam. The optical system of claim 1, further comprising a projection mirror, wherein the light The beam is emitted from the first light exit/entry surface and passes through the projection mirror. The optical system of claim 5, wherein the projection lens group focuses the light beam. The optical system of claim 1, wherein the third triangular ridge is adjacent to the second light exit/entry surface. The optical system of claim 7, wherein the third triangular raft is bonded to the second light exit/entry surface. The optical system of any one of claims 1 to 6, wherein the light source comprises an organic light emitting diode. An optical system comprising: a roof ridge; a first triangular ridge; a second triangular ridge; a third triangular ridge; and a light source emitting a light beam, wherein the light beam is not reflected After passing through the third triangular ridge, the second triangular ridge and the first triangular ridge, the ridge type raft is entered and reflected by the ridge type ridge to leave the ridge type raft.