JPH06150361A - Optical recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent the lowering of coupling efficiency of an objective lens by arranging a light emitting element so that the optical axes of outgoing lights are parallel with each other reflecting the light from the light emitting element with the reflection surface of a reflection mirror and irradiating the objective lens with this light. CONSTITUTION:A light 22 reflected by an optical card 1 is again transmitted through an objective lens 18, wavelength selection film 31 and projected on a reflection mirror 17. The light 22 reflected by the reflection mirror 17 is reflected by a beam splitter 16, converged by a collimator lens 19 and projected on a light receiving element 20. In such a recording/reproducing operation, since the reflection mirror 17, the wavelength selection film 31 and the objective lens 18 provided together on a movable member move simultaneously along the tracing direction (track 3), the incident angle of the light 21 to the moving wavelength selection film 31 does not change and continuous information recording/reproducing is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording / reproducing apparatus for optically recording and reproducing information on a recording medium such as an optical card, an optical disk, a magneto-optical disk or the like.

[0002]

2. Description of the Related Art Generally, an optical card capable of recording information is constructed, for example, as shown in FIG. In the figure,
A recording area 2 is formed on the optical card 1, and the recording area 2 is provided with tracks 3 separated by a track guide 4. The pit 5 is data recorded on the track 3.

FIG. 2 shows a conventional optical recording / reproducing apparatus for recording information on or reproducing information from the optical card 1 as described above.

In FIG. 2, the light emitting element 11 emits a recording light 21 (broken line), and the light emitting element 12 emits a reproducing light 22.
Emit (solid line). The beam splitter 16 reflects the light emitted from the light emitting element 12 and transmits the return light reflected from the optical card 1. The dichroic mirror 15 transmits the light 21 and reflects the light 22.

The reflecting mirror 17 reflects the incident lights 21 and 22 toward the objective lens 18. The positions of the light emitting element 11 and the light emitting element 12 are set so that the incident angles of the lights 21 and 22 incident on the reflecting mirror 17 are deviated by a predetermined angle. As a result, the light spots of the light 21 and the light 22 are deviated by a predetermined distance and are condensed on the optical card 1. With such an arrangement, it is possible to perform the verify read in which the information is reproduced immediately after being recorded.

The light receiving element 20 receives the return light reflected by the optical card 1. The collimator lenses 13 and 14 shape the divergent light emitted from the light emitting elements 11 and 12 into parallel light. The collimator lens 19 focuses return light, which is parallel light reflected by the optical card 1.

Next, the operation will be described based on the above configuration. First, the recording light 2 emitted from the light emitting element 11
After being shaped into parallel light by the collimator lens 13, the light 1 passes through the dichroic mirror 15 and is irradiated onto the reflecting mirror 17. Then, the light 21 is reflected by the reflecting surface of the reflecting mirror 17 and is directed to the objective lens 18. Objective lens 18
Thus, the light 21 is condensed on the optical card 1 and the information is recorded.

On the other hand, the reproduction light 22 emitted from the light emitting element 12 is shaped into parallel light by the collimator lens 14, and then reflected by the beam splitter 16 and the dichroic mirror 15 to be applied to the reflecting mirror 17. And light 2
2 is reflected by the reflecting surface of the reflecting mirror 17 and is directed to the objective lens 18. The light 22 is condensed by the objective lens 18 onto the optical card 1 and applied to the recorded pits 5.

The light 22 reflected by the optical card 1 is again applied to the reflecting mirror 17 via the objective lens 18. The light 22 reflected by the reflecting mirror 17 is reflected by the dichroic mirror 15, passes through the beam splitter 16, is condensed by the collimator lens 19, and then is irradiated onto the light receiving element 20.

In such recording and reproduction, since the reflecting mirror 17 and the objective lens 18 provided on the movable member (not shown) both move from the position A to the position B along the tracing direction (track 3), continuous information is recorded. Recording and reproduction are performed.

[0011]

In the conventional optical recording / reproducing apparatus, the positions of the light emitting element 11 and the light emitting element 12 are set so that the incident angles of the lights 21 and 22 incident on the reflecting mirror 17 are deviated by a predetermined angle. As a result, the positions of the light spots of the lights 21 and 22 applied to the optical card 1 are shifted. Therefore, when the reflecting mirror 17 and the objective lens 18 are at the position A, the light 21 and the light 22 irradiated on the objective lens 18 are displaced by a predetermined distance within the effective diameter of the objective lens 18 as shown in FIG. There is.

However, when the reflecting mirror 17 and the objective lens 18 move to the position B due to the recording / reproducing, the reflecting mirror 1 for the light 21.
The incident angle on the reflecting surface of 7 changes, and the light 21 emitted to the objective lens 18 as shown in FIG.
It will deviate outside the effective diameter.

The amount of change of the incident position of the light 21 on the objective lens 18 is obtained as follows. That is, light 21 and light 2
When the spot spacing of 2 is d [mm], the focal length of the objective lens 18 is f [mm], and the moving distance between the reflecting mirror 17 and the objective lens 18 is 1 [mm], the change amount x is x = 1 * d / f. It is represented by. For example, d = 0.05, f = 4.5, l = 85
In the case of (distance in the longitudinal direction of the optical card 1), x = 0.94, and when the reflecting mirror 17 and the objective lens 18 move from one end of the optical card to another, a shift of about 1 mm occurs. This shift reduces the coupling efficiency.

Further, since the light 21 reflected on the optical card 1 leaks into the light receiving element 20 and the reproduction signal deteriorates, there is a problem that it becomes difficult to reproduce the information immediately after recording.

The present invention has been made in consideration of the above points, and eliminates the change in the incident angle of the light 21 to the reflecting mirror 17 due to the movement of the reflecting mirror 17 and the objective lens 18, and on the optical card 1. An object is to provide an optical recording / reproducing device in which the reflected light 21 does not leak into the light receiving element 20.

[0016]

According to a first aspect of the present invention, there is provided an optical recording / reproducing apparatus, wherein a first light source and a second light source are arranged such that light emission optical axes thereof are parallel to each other, and the first light source. A reflecting member having a reflecting surface that reflects light from the second light source, and a reflecting member that is arranged on the optical path of the light emitted from the second light source with an inclination different from that of the reflecting surface. An optical member that reflects and transmits the light from the first light source reflected by the reflecting surface of the reflecting member, and a light from the second light source reflected by the optical member and a first light that passes through the optical member. The objective lens for condensing the light from the light source on the recording medium and the light receiving element for receiving the light reflected from the recording medium are featured.

According to another aspect of the optical recording / reproducing apparatus of the present invention, the first light source and the second light source are arranged so that the light emission optical axes thereof are parallel to each other, and the light from the first light source is arranged. A reflecting member having a reflecting surface for reflecting the light; the light emitted from the second light source and the light emitted from the first light source are arranged on the optical paths with an inclination different from that of the reflection surface; An optical member that reflects the light from the light source, transmits the light from the first light source, and transmits the light reflected by the reflecting surface of the reflecting member, and the second optical member that is reflected by the optical member.
An objective lens for condensing the light from the light source and the light from the first light source transmitted through the optical member on the recording medium, and a light receiving element for receiving the light reflected from the recording medium. It has a feature.

An optical recording / reproducing apparatus according to a third aspect is the optical recording / reproducing apparatus according to the first or second aspect, in which the first light source, the second light source and the light receiving element are fixed. A member and a movable member that fixes the reflecting member, the optical member, and the objective lens and is movable with respect to the recording medium are featured.

An optical recording / reproducing apparatus according to a fourth aspect is the optical recording / reproducing apparatus according to the first, second or third aspect, wherein one of the first light source and the second light source is recorded. Is a light source for reproduction and the other is a light source for reproduction.

An optical recording / reproducing device according to a fifth aspect of the present invention is the optical recording / reproducing device according to any one of the first to third aspects, wherein the optical member is a reflection selection film.
And the second light source emit light of different wavelengths.

An optical recording / reproducing apparatus according to a sixth aspect is the optical recording / reproducing apparatus according to any one of the first to third aspects, wherein the reflecting surface of the reflecting member and the reflection of the optical member are reflected. It is characterized by being provided with an angle adjusting mechanism for adjusting the relative angle of the surfaces.

[0022]

According to the optical recording / reproducing apparatus of the present invention, the optical recording / reproducing apparatus
The light emitting element 12 and the light emitting element 11 are arranged so that the emission optical axes of 1 and 22 are parallel to each other, the light 22 from the light emitting element 12 is reflected by the reflecting surface of the reflecting mirror 17, and the reflected light 22 is reflected. The reflecting mirror 1 reflects the light 21 from the light emitting element 11 while irradiating the objective lens 18 and condensing it on the optical card 1.
The wavelength selection film 3 that transmits the light 22 reflected by the reflection surface 7
1 is arranged on the optical path of the light 21 emitted from the light emitting element 11 with an inclination different from that of the reflecting surface of the reflecting mirror 17, and the light 21 reflected by the wavelength selection film 31 is applied to the objective lens 18 and collected on the optical card 1. It is configured to emit light, and the light 22 reflected from the optical card 1 is received by the light receiving element 20.

Therefore, the objective lens 18 and the reflecting mirror 17
Since the lights 21 and 22 incident on the objective lens 18 maintain a predetermined distance even if is moved along the tracing direction,
The coupling efficiency of the objective lens does not deteriorate.

An optical recording / reproducing apparatus according to a second aspect is
The light emitting element 12 and the light emitting element 11 are arranged so that the emission optical axes of the light 21 and 22 are parallel to each other, the light 22 from the light emitting element 12 is reflected by the reflecting surface of the reflecting mirror 17, and the reflected light 22 From the light emitting element 11 while irradiating the objective lens 18 with the light and condensing it on the optical card 1 and reflecting the light 21 from the light emitting element 11 and transmitting the light 22 reflected by the reflecting surface of the reflecting mirror 17. The light 21 emitted and the light 22 emitted from the light emitting element 12 are arranged on the optical path with an inclination different from that of the reflection surface of the reflecting mirror 17, and the light 21 reflected by the wavelength selection film 31 is irradiated onto the objective lens 18. The light 22 reflected by the optical card 1 is received by the light receiving element 20.

Therefore, the objective lens 18 and the reflecting mirror 17
Since the lights 21 and 22 incident on the objective lens 18 maintain a predetermined distance even if is moved along the tracing direction,
The coupling efficiency of the objective lens does not deteriorate, and the light 21 reflected on the optical card 1 does not leak into the light receiving element 20.

An optical recording / reproducing apparatus according to a third aspect is the optical recording / reproducing apparatus according to the first or second aspect, in which the light emitting elements 11 and 12 and the light receiving element 20 are fixed to a fixing member 32 and a reflecting mirror 17 is provided. Since the wavelength selection film 31 or 41 and the objective lens 18 are fixed and fixed to the movable member 62 which is movable with respect to the optical card 1, the light 21, 22 incident on the objective lens 18 even if the movable member moves. Can maintain a predetermined distance, and can form a separation type head that does not deteriorate the coupling efficiency of the objective lens.

The optical recording / reproducing apparatus described in claim 4 is the optical recording / reproducing apparatus according to claim 1, 2 or 3, wherein one of the light emitting elements 11 and 12 is a recording light source and the other is Is a reproducing light source, and is suitable for verify read.

An optical recording / reproducing apparatus according to a fifth aspect is the optical recording / reproducing apparatus according to the first, second, third or fourth aspect, wherein the light emitting elements 11 and 12 emit lights of different wavelengths. The lights having different wavelengths are reflected and transmitted by the wavelength selection film 31 or 41 depending on the wavelength.

An optical recording / reproducing apparatus according to a sixth aspect is the optical recording / reproducing apparatus according to the first, second, third, fourth or fifth aspect, wherein the reflecting surface of the reflecting mirror 17 and the wavelength selection film 41 are formed. Since the angle adjusting screw 64 for adjusting the relative angle of the reflecting surface is provided, the distance between the light 21 and the light 22 with which the objective lens 18 is irradiated can be set to a predetermined distance as necessary.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the optical recording / reproducing apparatus of the present invention will be described with reference to FIG. In the same figure, the same symbols are attached to the same requirements as in FIG.

In FIG. 4, the fixing portion 32 is the light emitting element 1.
The light emitting elements 11 and 12 are fixed so that the optical axes of the lights 21 and 22 emitted from the light emitting elements 1 and 12 are parallel to each other, and the light receiving element 20 and other optical components (collimating lenses 13 and 14,
19, the beam splitter 16) is also fixed. The wavelength selection film 31 reflects the light 21 having a wavelength of 780 nm,
For example, it transmits the light 22 having a wavelength of 830 nm and has the characteristics shown in FIG. The wavelength selection film 31 is arranged on the optical path of the light 21 and the optical path of the light 22 reflected by the reflecting mirror 17. Then, it is inclined at a predetermined angle with respect to the reflecting surface of the reflecting mirror 17. Due to this angle inclination, the light spots of the light 21 and the light 22 are deviated by a predetermined distance and are condensed on the optical card 1.

Next, the operation will be described based on the above configuration. The recording light 21 emitted from the light emitting element 11 is shaped into parallel light by the collimator lens 13, and then is irradiated onto the wavelength selection film 31. Then, the light 21 is reflected by the reflecting surface of the wavelength selection film 31 and is directed to the objective lens 18. The light 21 is condensed on the optical card 1 by the objective lens 18 and information is recorded.

On the other hand, the reproduction light 22 whose optical axis is parallel to the light 21 emitted from the light emitting element 12 is shaped into parallel light by the collimator lens 14 and then transmitted through the beam splitter 16 to be reflected by the reflecting mirror 17. Is irradiated. Then, the light 22 is reflected by the reflecting surface of the reflecting mirror 17, and the wavelength selection film 31
Is transmitted to the objective lens 18 for irradiation. The radiated light 22 is focused on the optical card 1 by the objective lens 18 and radiated to the recorded pits 5.

The light 22 reflected by the optical card 1 again passes through the objective lens 18 and the wavelength selection film 31 and is reflected by the reflecting mirror 1.
7 is irradiated. The light 22 reflected by the reflecting mirror 17 is reflected by the beam splitter 16 and condensed by the collimator lens 19, and then the light receiving element 20.
Is irradiated.

During such recording and reproduction, the reflecting mirror 17, the wavelength selection film 31, and the objective lens 18 provided on a movable member (not shown) all move along the trace direction (track 3), so that the wavelength to be moved is selected. Light 2 to the membrane 31
The incident angle of 1 does not change and continuous recording and reproducing of information is performed.

FIG. 5 shows a second embodiment of the optical recording / reproducing apparatus of the present invention.
It is a figure which shows the Example of. In the figure, the same requirements as those in FIG. 4 are designated by the same reference numerals.

In FIG. 5, the optical axes of the light 21 and the light 22 are parallel. The wavelength selection film 41 reflects the light 21 having a wavelength of 780 nm and transmits the light 22 having a wavelength of 830 nm, for example, and has characteristics as shown in FIG. The wavelength selection film 41 is arranged on the optical paths of the light 21 and the light 22 and the optical path of the light 22 reflected by the reflecting mirror 17. Then, it is inclined at a predetermined angle with respect to the reflecting surface of the reflecting mirror 17. With this angle tilt,
The light spots of the light 21 and the light 22 are condensed on the optical card 1 with a predetermined distance difference.

Next, the operation will be described based on the above configuration. The recording operation is the same as that shown in FIG. 4, but the light 21 reflected from the optical card 1 is the objective lens 18
The wavelength-selective film 41 is irradiated with the light. At this time, the wavelength selection film 41 has the characteristics as shown in FIG.
About 10% of However, transmitted 10%
The light 21 is reflected by the reflecting surface of the reflecting mirror 17 and is irradiated on the wavelength selection film 41 again, so that the light 22 is attenuated to about 1%. Therefore, the deterioration of the reproduced signal can be suppressed.

The reproduction light 22 whose optical axis is parallel to the light 21 emitted from the light emitting element 12 is shaped into parallel light by the collimator lens 14 and then is converted into the beam splitter 16.
Then, the light passes through the wavelength selection film 41 and is irradiated onto the reflecting mirror 17. Then, the light 22 is reflected by the reflecting surface of the reflecting mirror 17, passes through the wavelength selection film 31 again, and is irradiated onto the objective lens 18. The radiated light 22 is focused on the optical card 1 by the objective lens 18 and radiated to the recorded pits 5.

The light 22 reflected by the optical card 1 again passes through the objective lens 18 and the wavelength selection film 31 and is reflected by the reflecting mirror 1.
7 is irradiated. Then, the light 22 reflected by the reflecting mirror 17 passes through the wavelength selection film 41, is then reflected by the beam splitter 16, is condensed by the collimator lens 19, and is applied to the light receiving element 20.

During such recording and reproduction, the reflecting mirror 17, the wavelength selection film 41, and the objective lens 18 provided on a movable member (not shown) all move along the tracing direction (track 3), so that the wavelength to be moved is selected. Light 2 to the membrane 31
The incident angle of 1 does not change and continuous recording and reproducing of information is performed.

FIG. 6 shows a third embodiment of the optical recording / reproducing apparatus of the present invention.
It is a figure which shows the Example of. In the same figure, the same symbols are attached to the same requirements as in FIG.

In FIG. 5, the reflecting mirror 17 in FIG.
Instead of the above, an internal reflection type prism mirror 51 is used. The surface facing the reflecting surface of the prism mirror 51 is
It is processed so as to be inclined at a predetermined angle with respect to this reflecting surface. Then, the wavelength selection film 41 is formed on the processed inclined surface.
Is glued.

Now, in the first or second embodiment,
The relative angle between the wavelength selection film 31 or 41 and the reflecting surface of the reflecting mirror 17 is θ [deg], and the focal length of the objective lens 18 is f.
[Mm], the light spot distance d [mm] between the recording light 21 and the reproducing light 22 is represented by d = f * tan θ. Therefore, when d = 0.05 and f = 4.5, θ becomes 0.64 [deg]. In this way, the wavelength selection film 3
In order to set the relative angle between 1 or 41 and the reflecting surface of the reflecting mirror 17, strict processing accuracy is required.

On the other hand, according to the third embodiment described above, since the bonding surface of the wavelength selection film 41 for determining the relative angle is processed in the prism mirror 51 which can be processed with relatively high accuracy, Production becomes easy. Also, the prism mirror 5
First, the wavelength selection film 41 is adhered to and integrated with
Since it is attached to a movable member (not shown), it is easy to assemble.

In each of the above embodiments, the case where the wavelength selection film shown in FIG. 7A is used has been described. However, as shown in FIG. 7B, light having a wavelength of 780 nm is transmitted and wavelength of 830 nm is transmitted. You may use the wavelength selection film of the characteristic which reflects the said light. Further, light having a wavelength of 780 nm may be used for reproduction and light having a wavelength of 830 nm may be used for recording. Further, as the light emitting elements 11 and 12, a semiconductor laser, a light emitting diode or the like can be used.

Next, the reflecting surface of the reflecting mirror 17 and the wavelength selection film 4
An angle adjusting mechanism for adjusting the relative angle of 1 will be described with reference to FIG. In the figure, the same symbols are attached to the same requirements as in FIG.

The lens actuator 61 movably supports the objective lens 18 in the tracking direction and the focus direction. The movable member 62 is the lens actuator 61.
Is mounted and fixed, and the reflecting mirror 17 and the wavelength selection film 4
Holds 1 The bearing 63 provided on the movable member 62 is in contact with the pair of guide shafts 65,
The movable member 62 supports so as to be movable in the trace direction.

The angle adjusting screw 64 is attached to the rotating shaft of the wavelength selecting film 41, and by rotating the angle adjusting screw, the wavelength selecting film 41 rotates about the rotating shaft. Thereby, the reflecting surface of the reflecting mirror 17 and the wavelength selection film 4
The relative angle of 1 can be adjusted.

[0050]

According to the optical recording / reproducing apparatus of the first aspect, the light emitting element 12 and the light emitting element 11 are arranged such that the emission optical axes of the lights 21 and 22 are parallel to each other.
The light 22 from 2 is reflected by the reflecting surface of the reflecting mirror 17, and the reflected light 22 is applied to the objective lens 18 to be condensed on the optical card 1, and the light 21 from the light emitting element 11 is also reflected and reflected. The wavelength selection film 31 that transmits the light 22 reflected by the reflecting surface of 17 is arranged on the optical path of the light 21 emitted from the light emitting element 11 with an inclination different from that of the reflecting surface of the reflecting mirror 17.
Since the light 21 reflected by the wavelength selection film 31 is applied to the objective lens 18 and condensed on the optical card 1, and the light 22 reflected from the optical card 1 is received by the light receiving element 20, the objective Even if the lens 18 and the reflecting mirror 17 move along the tracing direction, the light 21 and 22 incident on the objective lens 18 maintain a predetermined distance, so that the coupling efficiency of the objective lens does not deteriorate.

The optical recording / reproducing apparatus according to claim 2 is
The light emitting element 12 and the light emitting element 11 are arranged so that the emission optical axes of the light 21 and 22 are parallel to each other, the light 22 from the light emitting element 12 is reflected by the reflecting surface of the reflecting mirror 17, and the reflected light 22 From the light emitting element 11 while irradiating the objective lens 18 with the light and condensing it on the optical card 1 and reflecting the light 21 from the light emitting element 11 and transmitting the light 22 reflected by the reflecting surface of the reflecting mirror 17. The light 21 emitted and the light 22 emitted from the light emitting element 12 are arranged on the optical path with an inclination different from that of the reflection surface of the reflecting mirror 17, and the light 21 reflected by the wavelength selection film 31 is irradiated onto the objective lens 18. Since the light 22 reflected by the optical card 1 is received by the light receiving element 20, the objective lens 18 and the reflecting mirror 17 are moved along the tracing direction. 1 Since the light 21 incident on maintains the predetermined distance, without coupling efficiency of the objective lens is deteriorated, the light 21 reflected on the optical card 1 from leaking into the light receiving element 20.

An optical recording / reproducing apparatus according to a third aspect is the optical recording / reproducing apparatus according to the first or second aspect, in which the light emitting elements 11 and 12 and the light receiving element 20 are fixed to a fixing member 32, and the reflecting mirror 17 is provided. Since the wavelength selection film 31 or 41 and the objective lens 18 are fixed and fixed to the movable member 62 which is movable with respect to the optical card 1, the light 21, 22 incident on the objective lens 18 even if the movable member moves. Can maintain a predetermined distance, and can form a separation type head that does not deteriorate the coupling efficiency of the objective lens.

The optical recording / reproducing apparatus described in claim 4 is the optical recording / reproducing apparatus according to claim 1, 2 or 3, wherein one of the light emitting elements 11 and 12 is a recording light source and the other is Is a reproducing light source, and is suitable for verify read.

The optical recording / reproducing apparatus described in claim 5 is the optical recording / reproducing apparatus according to claim 1, 2, 3 or 4, in which the light emitting elements 11 and 12 emit lights of different wavelengths. The lights having different wavelengths are reflected and transmitted by the wavelength selection film 31 or 41 depending on the wavelength.

An optical recording / reproducing device according to a sixth aspect is the optical recording / reproducing device according to the first, second, third, fourth or fifth aspect, wherein the reflecting surface of the reflecting mirror 17 and the wavelength selection film 41 are formed. Since the angle adjusting screw 64 for adjusting the relative angle of the reflecting surface is provided, the distance between the light 21 and the light 22 with which the objective lens 18 is irradiated can be set to a predetermined distance as necessary. Produce an effect.

[Brief description of drawings]

FIG. 1 is a plan view showing a specific configuration of a general optical card.

FIG. 2 is a plan view showing the configuration of an example of a conventional optical recording / reproducing apparatus.

FIG. 3 is a conceptual diagram showing a positional relationship between recording light and reproducing light in a conventional optical recording / reproducing apparatus.

FIG. 4 is a plan view showing a specific configuration of the first embodiment of the optical recording / reproducing apparatus of the present invention.

FIG. 5 is a plan view showing a specific configuration of the second embodiment of the optical recording / reproducing apparatus of the present invention.

FIG. 6 is a plan view showing a specific configuration of a third embodiment of the optical recording / reproducing apparatus of the present invention.

FIG. 7 is a characteristic diagram showing characteristics of the wavelength selection film of the optical recording / reproducing apparatus of the present invention.

FIG. 8 is a perspective view showing a specific configuration of an angle adjusting mechanism of the optical recording / reproducing apparatus of the present invention.

[Explanation of symbols]

 1 Optical Card (Recording Medium) 11, 12 Light-Emitting Element (Light Source) 13, 14, 19 Collimating Lens 20 Light-Receiving Element 21, 22 Light 17 Reflecting Mirror (Reflecting Member) 51 Prism Mirror (Reflecting Member) 18 Objective Lens 31, 41 Wavelength Selective film (optical member) 64 Angle adjustment screw (angle adjustment mechanism)

Claims (6)

[Claims] 1. A first light source and a second light source, which are arranged such that light output optical axes are parallel to each other, and a reflecting member having a reflecting surface for reflecting the light from the first light source, The first light source is disposed on the optical path of the light emitted from the second light source with an inclination different from that of the reflection surface, reflects the light from the second light source, and is reflected by the reflection surface of the reflection member. An optical member that transmits light from a light source, an objective lens that collects the light from the second light source reflected by the optical member and the light from the first light source that has passed through the optical member on a recording medium. An optical recording / reproducing apparatus comprising: a light receiving element that receives light reflected from the recording medium. 2. A first light source and a second light source, which are arranged such that light output optical axes are parallel to each other, and a reflecting member having a reflecting surface for reflecting light from the first light source. The light emitted from the second light source and the light emitted from the first light source are arranged on the optical paths with an inclination different from that of the reflection surface, and reflect the light emitted from the second light source. An optical member which transmits the light from the light source and transmits the light reflected by the reflection surface of the reflecting member, and the light from the second light source which is reflected by the optical member and the first member which transmits the optical member. An optical recording / reproducing apparatus comprising: an objective lens that collects light from a light source onto a recording medium; and a light receiving element that receives light reflected from the recording medium. 3. A fixing member for fixing the first light source, the second light source and the light receiving element, and a movable member for fixing the reflecting member, the optical member and the objective lens and being movable with respect to the recording medium. The optical recording / reproducing apparatus according to claim 1 or 2, further comprising: a member. 4. The optical system according to claim 1, wherein one of the first light source and the second light source is a recording light source and the other is a reproducing light source. Recording / playback device. 5. The optical member is a reflection selection film, and the first light source and the second light source emit light of different wavelengths. The optical recording / reproducing apparatus described. 6. The angle adjusting mechanism for adjusting the relative angle between the reflecting surface of the reflecting member and the reflecting surface of the optical member, according to claim 1, 2, 3, 4 or 5. The optical recording / reproducing apparatus described.