JP2006072012A - Collimator, its adjusting jig and method, and optical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collimator which can simply and surely adjust the focal point and the radiation angle of light, and to provide a collimator adjusting jig and method and a high-precision optical instrument. <P>SOLUTION: This collimator has a sleeve holder 4, capable of adjusting the distance between the laser diode and the collimator lens which is fixed in the lens holder 5 by moving the sleeve 2 retaining a laser diode in the direction of the optical axis of the light emitted from the laser diode, and a lens holder 5, capable of adjusting the relative position of the laser diode and the collimator lens by moving the sleeve holder 4 in a direction perpendicular to the optical axis. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a collimating device for adjusting the focal point and irradiation angle of light emitted from a light source, an adjusting jig for the collimating device, and an adjusting method.

  There are a plurality of types of optical devices having a plurality of combinations of light sources and collimating devices. An example of this optical device is a biosensor (see, for example, Patent Document 1).

  FIG. 10 is a diagram showing an example of the optical device (including a biosensor such as an insulin chip sensor) as described above.

  The optical device 100 includes a housing 101, a collimating device 102 including a laser diode as a light source and a collimating lens, an aperture 103, a sample mounting unit 105, a sample 106 mounted therein, and a back surface having a mirror surface. It consists of a processed cover 107 and a light receiving unit 108.

The condensing diameter of the laser beam 104 emitted from the collimator 102 is adjusted by the aperture 103, reaches the sample 106, a part of it is reflected (104a in the figure), and the other part (106b in the figure). ) Passes through the sample 106, passes through the sample 106 again while being totally reflected by the back surface of the cover 107, and is received by the light receiving unit 108.
Japanese Patent Laid-Open No. 9-61346

  In the optical device as described above, after the assembly, each collimator device irradiates light from a plurality of collimator devices toward the target so that the light spots projected onto the target are in a straight line. It is necessary to adjust the focal point and the irradiation angle.

  However, this adjustment work is difficult, and the manufacturing lead time, that is, the time until the collimator device or the optical device is completed increases.

  Further, the plurality of collimator devices do not have manufacturing compatibility (compatibility at the time of adjustment), and therefore, the increase in the manufacturing lead time is more remarkable.

  In view of such circumstances, the present invention provides a collimator device, a collimator device adjustment jig, a collimator device adjustment method, and an optical device with high optical accuracy that can easily and reliably adjust the focal point and irradiation angle of light. Objective.

  The present invention described in claim 1 is a light source fixing member that fixes a light source, a housing member that houses at least a part of the light source fixing member, a collimating lens that receives light emitted from the light source, and a housing member. A collimating lens fixing member that is in contact, and the housing member is configured to adjust a distance between the light source and the collimating lens in the optical axis direction by moving the light source fixing member in the optical axis direction of the light emitted from the light source. The light source fixing member is bonded after adjusting the distance, and the collimating lens fixing member moves the receiving member in the direction orthogonal to the optical axis to move the relative position of the light source and the collimating lens in the direction orthogonal to the optical axis. The gist is that the housing member is bonded after the relative position is adjusted.

  The gist of the present invention described in claim 2 is that, in the invention described in claim 1, the housing member and the light source fixing member are bonded to each other by applying an adhesive at a plurality of spots.

  A third aspect of the present invention is the invention according to the first or second aspect, wherein the collimating lens fixing member and the housing member are bonded together by applying an adhesive in a dotted manner to a plurality of locations. And

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the accommodating member penetrates toward the collimating lens fixing member and is configured to be able to inject an adhesive. The main point is to have a part.

  The gist of the present invention described in claim 5 is that, in the invention described in any one of claims 2 to 4, the adhesive is an ultraviolet curable adhesive.

  According to a sixth aspect of the present invention, there is provided a light source fixing member that fixes a light source, a housing member that houses at least a part of the light source fixing member, a collimating lens that receives light emitted from the light source, and a housing member. An adjustment jig for a collimator device including a collimating lens fixing member that contacts the light source and the collimating lens in the optical axis direction by moving the light source fixing member in the optical axis direction of light emitted from the light source with respect to the housing member And a position for adjusting the relative position of the light source and the collimating lens in the direction orthogonal to the optical axis by moving the housing member in the direction orthogonal to the optical axis with respect to the collimating lens fixing member The gist is to have an adjustment unit.

  A seventh aspect of the present invention provides a light source fixing member that fixes a light source, a storage member that stores at least a part of the light source fixing member, a collimating lens that receives light emitted from the light source, and a storage member. A collimating device adjustment method comprising: a collimating lens fixing member in contact with a light source and a collimating lens in the optical axis direction by moving the light source fixing member in the optical axis direction of light emitted from the light source relative to the housing member; Adjusting the distance between the light source and the collimating lens in the direction perpendicular to the optical axis by moving the housing member in the direction perpendicular to the optical axis with respect to the collimating lens fixing member A first bonding step of bonding the light source fixing member and the housing member after adjusting the distance, and a housing member after adjusting the position; And summarized in that a second adhesive bonding a re formate lens fixing member.

  The gist of the present invention described in claim 8 is that, in the invention described in claim 7, an ultraviolet curable adhesive is used in at least one of the first bonding step and the second bonding step.

  According to a ninth aspect of the present invention, there is provided a light emitting unit as a light source, a collimating unit having a lens for adjusting an irradiation direction of light emitted from the light emitting unit, and a sample to be measured on which light from the collimating unit is incident. A sample mounting unit, a reflecting unit that reflects light from the sample mounting unit, and a light receiving unit that receives light from the reflecting unit, the collimating unit facing the sample mounting unit The gist is that the optical axis of the light from the light emitting portion and the sample to be measured are provided on an inclined surface.

  According to a tenth aspect of the present invention, in the invention according to the ninth aspect, the reflecting portion is provided above the sample mounting portion, and the light incident on the sample to be measured is totally reflected by the reflecting portion. This is the gist.

  The present invention according to claim 11 is the invention according to claim 9 or 10, wherein the sample mounting portion is provided on the main surface, and the collimating device is a side surface side forming a predetermined angle with the main surface. The gist is that it is provided.

  According to the present invention, it is possible to provide a collimator device, a collimator device adjustment jig, a collimator device adjustment method, and an optical device with high optical accuracy that can easily and reliably adjust the focus and irradiation angle of light.

  Hereinafter, a collimating device, a collimating device adjusting jig, a collimating device, and an optical device according to the present invention will be described with reference to the drawings.

  The following examples are only for the purpose of explaining the present invention and do not limit the scope of the present invention. Accordingly, those skilled in the art can employ various embodiments including each or all of these elements, and these embodiments are also included in the scope of the present invention.

  In all the drawings for explaining the following embodiments, the same reference numerals are given to the same elements, and the repeated explanation thereof is omitted.

  FIG. 1 is an exploded perspective view showing a configuration of a collimating apparatus 1 according to a first embodiment (Example 1) of the present invention, and FIG. 2 is a perspective view showing a state in which the collimating apparatus 1 of FIG. 1 is assembled. FIG.

  As shown in FIG. 1, a collimating apparatus 1 includes a sleeve (light source fixing member) 2, a laser diode (light source) 3, a sleeve holder (accommodating member) 4, a lens holder (collimating lens fixing member) 5, and a collimator. Lens 6.

  The sleeve 2 has a cylindrical shape, and fixes the laser diode 3 therein. Further, two grooves 21 for gripping the sleeve 2 are provided on the side surface.

  The sleeve holder 4 has a through hole into which a part of the sleeve 2 is inserted (hereinafter referred to as “sleeve insertion hole 41”) and a through hole into which an adhesive is injected (hereinafter referred to as “adhesive injection hole 42”). Called).

  The lens holder 5 is provided with an opening 51 and a cylindrical protrusion 52 that surrounds the opening 51, and the collimating lens 6 is accommodated in the cylindrical protrusion 52.

  As shown in FIG. 2, the sleeve holder 4 in which the sleeve 2 is inserted is in contact with the lens holder 5.

  The sleeve holder 4 is moved in the optical axis direction (direction A in the figure) of the laser light emitted from the laser diode 3 (FIG. 1), whereby the distance between the laser diode 3 and the collimating lens 6 (FIG. 1). It is configured to be adjustable.

  As described above, the focal point of the laser beam is adjusted by adjusting the distance between the laser diode 3 and the collimating lens 6.

  Further, the sleeve 2 and the sleeve holder 4 are bonded after the adjustment of the distance (the focus of the laser beam). In this case, for example, as shown in FIG. 2, on the peripheral portion of the surface where the sleeve 2 and the sleeve holder 4 are in contact with each other so that the ultraviolet curable adhesive 43 does not move due to shrinkage at the time of curing. In this method, an appropriate amount is applied to a plurality of spots at regular intervals. Thereby, it is possible to prevent an error from occurring in the adjusted focus at the time of bonding.

  In this case, an appropriate amount of UV effect type adhesive is applied to the entire peripheral portion of the surface where the sleeve 2 and the sleeve holder 4 are in contact with each other, so that an error occurs in the adjusted focus at the time of bonding. Can be prevented.

  The lens holder 5 is configured such that the relative position between the laser diode 3 and the collimating lens 6 can be adjusted by moving the sleeve holder 4 in a direction orthogonal to the optical axis (direction B in the figure).

  As described above, by adjusting the relative position of the laser diode 3 and the collimating lens 6, that is, the incident position of the laser light on the collimating lens 6, the irradiation angle of the laser light is adjusted.

  The lens holder 5 and the sleeve holder 4 are bonded after adjusting the relative position (laser beam irradiation angle). In this case, as shown in FIG. 2, for example, as shown in FIG. 2, the peripheral portion of the surface where the lens holder 5 and the sleeve holder 4 come into contact with each other so that the member does not move due to the shrinkage at the time of curing the ultraviolet curable adhesive 54. In the above, a suitable amount is applied to a plurality of spots at regular intervals. Thereby, it is possible to prevent an error from occurring in the adjusted relative position during bonding.

  Further, in this case, an appropriate amount of UV effect type adhesive is applied to the entire peripheral portion of the surface where the lens holder 5 and the sleeve holder 4 are in contact with each other, thereby causing an error in the adjusted relative position during bonding. This can be prevented.

  Prior to this, the lens holder 5 and the sleeve holder 4 are temporarily bonded by injecting an ultraviolet curable adhesive into the adhesive injection hole 42. This makes it possible to make the bonding more reliable and prevent an error from occurring in the adjusted relative position at the time of bonding.

  Since the collimating apparatus 1 has the above-described configuration, the focal point and the emission direction of light emitted from the light source can be individually adjusted. For this reason, adjustment work can be performed easily and reliably.

  Moreover, when adjusting the focus and irradiation angle of the collimating apparatus 1, the following adjustment jigs can be used.

  FIG. 3 is a perspective view of the collimator adjusting jig 7 according to the second embodiment (embodiment 2) of the present invention.

  The collimator adjustment jig 7 includes a work plate 71 whose flatness is strictly adjusted, a lens holder mounting portion 72, a horizontal direction driving portion 76, a sleeve holder fixing plate 77, a vertical direction driving portion 79, and a sleeve. And a gripping portion 80.

  The flatness of the work plate 71 is strictly adjusted, and other members are arranged on this surface.

  The lens holder mounting portion is provided with a lens holder mounting hole 73 for mounting the lens holder 5 (FIGS. 1 and 2) on the upper surface, a reflecting portion 74 is provided inside thereof, and an optical path of laser light is secured on the side surface. An opening 75 is provided for this purpose.

  In addition, the flatness of the surface provided with the lens holder mounting hole and the surface provided with the reflecting portion 74 is adjusted strictly, and the positional relationship is adjusted so as to be parallel to the work plate 71.

  The sleeve holder fixing plate 77 can be moved in the horizontal direction (direction D in the drawing) by the horizontal driving unit 76, and the sleeve holder for fixing the sleeve holder 4 (FIGS. 1 and 2) to the end thereof. A fixing portion 78 is provided, and the sleeve holder fixing portion 78 is disposed on the upper side of the lens holder mounting hole 73.

  The flatness of the sleeve holder fixing plate 77 is strictly adjusted, and the positional relationship is adjusted so as to be parallel to the work plate 71.

  The horizontal driving unit 76 and the sleeve holder fixing plate 77 are for adjusting the relative positions of the laser diode 3 and the collimating lens 6 shown in FIGS. 1 and 2. Is collectively referred to as a “position (irradiation angle) adjustment unit” where appropriate. Details of this will be described later.

  The sleeve gripping portion 80 can be moved in the vertical direction (direction C in the figure) by the vertical direction driving portion 79, and the sleeve 2 (FIGS. 1 and 2) is fixed to the tip portion thereof. The tip portion is disposed so as to be located above the lens holder mounting hole 73 and the sleeve holder fixing portion 78.

  Further, the mounting angle of the vertical driving unit 79 is adjusted so as to be perpendicular to the upper surface of the sleeve holder fixing plate 77, and the sleeve gripping unit 80 is parallel to the upper surface of the sleeve holder fixing plate 77. The attachment angle etc. with respect to the vertical direction drive part 79 are adjusted so that.

  The vertical driving unit and the sleeve gripping unit 80 are for adjusting the distance between the laser diode 3 and the collimating lens 6 shown in FIG. 1 and FIG. 2. Collectively referred to as “distance (focus) adjusting section”. Details of this will be described later.

  The collimating device adjusting jig 7 described above forms a part of the adjusting device according to one embodiment of the present invention. Hereinafter, details of the adjusting device will be described.

  As shown in FIG. 4, in addition to the collimator adjustment jig 7, the adjustment device 81 can be freely changed in angle with a plate-like target 82 provided with a pinhole 83, and is a reflection that totally reflects light. Plate 86.

Note that the horizontal plane of each part constituting the target 82 and the collimator adjustment jig 7 is adjusted to be parallel to the collimator 1 using the adjustment device 81 and the collimator adjustment jig 7 (FIG. 3).
When adjusting the optical axis, it is necessary to adjust the optical axis of the laser beam in advance. In this case, the laser light source 84 is arranged on the upper part of the target 82, and as shown in FIG. 5A, a reflector 87 whose flatness is strictly adjusted is placed on the upper part of the lens holder mounting part.

  In addition, the reflection part 74 in the drawing is adjusted so as to form an angle of 45 ° with respect to the surface of the lens holder attachment part 72 on which the reflection plate 87 is placed and the bottom surface of the lens holder attachment part 72.

  When the reflecting plate 87 is placed, as shown in FIG. 4, the laser light 85 is irradiated vertically from the laser light source 84 toward the pinhole 83. The laser beam 85 is reflected by the reflecting plate 86, is incident on the lens holder mounting portion 72, is reflected by the reflecting portion 74 in FIG. 5A, is reflected by the reflecting plate 87, and is again reflected by the reflecting portions 74 and 86. Then, the target 82 is irradiated.

  Here, if the adjustment of the optical axis is inappropriate, the laser beam 85 is projected onto the lower surface of the target 82. In this case, the angle of the reflecting plate 86 is adjusted so that the laser beam 85 is not projected onto the lower surface of the target 82. This completes the adjustment of the optical axis.

  When the adjustment of the optical axis is completed, the reflector 87 in FIG. 5A is removed, and the lens holder 5 is attached to the lens holder attachment hole 73 as shown in FIG. At this stage, the sleeve 2 and the sleeve holder 4 and the sleeve holder 4 and the lens holder 5 are not bonded.

  When the lens holder 5 is attached, as shown in FIG. 6, the sleeve holder 4 is fixed to the sleeve holder fixing portion 78 and is movable in the horizontal direction (direction D in the figure).

  Further, as shown in FIG. 7, the sleeve 2 is fixed to the sleeve gripping portion 80 and is movable in the vertical direction (direction C in the figure).

  When each of the sleeve 2, the sleeve holder 4, and the lens holder 5 is fixed as described above, a power source or the like is connected to the laser diode 3, and laser light 85 is actually emitted from the laser diode 3, as shown in FIG. Thus, the target 82 is irradiated.

  At this time, while observing the state of the lower surface of the target 82, the irradiation angle of the collimator device 1 is adjusted by the “position (irradiation angle) adjusting unit” shown in FIG. 3 and the like, and the laser beam 85 is projected onto the target 82. When there is no state, that is, when the irradiation position of the laser beam 85 is the same as the position of the pinhole 83 and this is not visible, the sleeve holder 4 and the lens holder 5 are bonded by the above method.

  The diameter of the pinhole 83 is adjusted based on the beam diameter when a desired focal point is obtained. When the focal point is not appropriate, the irradiation position of the laser beam 85 and the position of the pinhole 83 are the same. The laser beam 85 is projected on the periphery of the pinhole 83 in an annular shape.

  Therefore, while observing the state of the lower surface of the target 82, when the focus of the collimator device 1 is adjusted by the “distance (focus) adjusting unit” shown in FIG. The sleeve holder 4 is bonded by the above method.

  The collimator adjustment method using the adjustment device and the collimator adjustment jig described above is also included in the scope of the present invention.

  The collimating device 1 can be applied to various types of optical devices. An example is shown below.

  FIG. 8 is a perspective view of an optical device (biosensor) 9 according to a third embodiment (Example 3) of the present invention, and FIG. 9 is a cross-sectional view of the optical device 9.

  The optical device 9 includes a casing 91, a collimator device 1 that has been adjusted, a sample placement unit 92, a sample 93, a cover 94, a screw 95, an aperture 96, and a light receiving unit 97.

  As shown in FIG. 8, eight sample placement portions 92 are provided on the upper surface of the casing 91, and a sample 93 is placed on each of them.

  Further, a cover 94 whose rear surface is mirror-finished is disposed above the sample mounting portion 92.

  In addition, the same number of collimator devices 1 as the sample placement unit are connected to the side surface of the housing 91.

  In addition, as shown in FIG. 9, the collimating device 1 is fixed to an inclined surface provided on the side surface of the housing 91 by a screw 95.

  The condensing diameter of the laser beam 85 emitted from the collimator 1 is adjusted by the aperture 96, reaches the sample 93, a part is reflected (85a in the figure), and the other part (in the figure). 85 b) passes through the sample 93, passes through the sample 93 again while being totally reflected by the back surface of the cover 94, and is received by the light receiving unit 97.

  Further, the flatness of the surface to which the collimator device 1 is attached is strictly adjusted, and the inclination angle of this surface and the dimensions of the housing 91 are the same as the focal point and the irradiation angle by the method described in the previous embodiment. When the adjusted collimating apparatus 1 is attached, the laser light 85 emitted from the collimating apparatus 1 is adjusted in advance so as to be incident on an appropriate position of the sample 93 at an appropriate angle.

  Further, for example, a guide hole for positioning the collimator device 1 may be formed on the surface to which the collimator device 1 is attached so that light is emitted in a predetermined direction.

  This eliminates the need to adjust the focal point and the irradiation angle of the collimating device 1 again when the collimating device 1 is mounted on the optical device 9, and is easy to use. The collimating apparatus 1 is also highly compatible.

  As described above, in the collimating device, the collimating device adjusting jig, and the collimating device adjusting method according to the embodiment of the present invention, the focal point and the irradiation angle of light can be individually adjusted, so that the adjustment is easy and reliable.

  In addition, since the focus and the irradiation angle of the light are adjusted while observing the position of the laser light and the like, high optical accuracy can be easily ensured.

  Further, it is possible to prevent an error in the adjusted focal point and irradiation angle when the adhesive is cured.

  In addition, the collimating device can be adjusted and assembled independently, and the adjustment work for attaching the collimating device to the optical device is unnecessary, so that the manufacturing lead time can be shortened.

  In addition, since the collimator has compatibility, maintenance and service are facilitated.

  Further, by incorporating such a collimating device into a part of the optical device, it is possible to easily realize the same device with high optical accuracy.

It is a disassembled perspective view which shows the structure of the collimating apparatus which concerns on 1st Example of this invention. It is a perspective view which shows the state by which the collimating apparatus of FIG. 1 was assembled. It is a perspective view of the collimator adjustment jig concerning the 2nd example of the present invention. It is a figure which shows the structure of the adjustment apparatus containing the collimation apparatus adjustment jig | tool of FIG. (A) It is a figure for demonstrating the initial adjustment of the optical axis in the adjustment jig | tool of FIG. (B) It is a figure for demonstrating the adjustment method of the collimating apparatus of FIG. It is a figure which shows the state by which the sleeve holder and lens holder of FIG. 1 were being fixed to the adjustment jig | tool of FIG. FIG. 4 is a diagram illustrating a state where the sleeve, the sleeve holder, and the lens holder of FIG. 1 are fixed to the adjustment jig of FIG. 3. It is a perspective view of the optical apparatus which concerns on the 3rd Example of this invention. It is sectional drawing of the optical apparatus of FIG. It is sectional drawing of the conventional optical apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Collimating apparatus, 2 ... Sleeve, 3 ... Laser diode, 4 ... Sleeve holder, 5 ... Lens holder, 6 ... Collimating lens, 7 ... Collimating device adjustment jig, 9 ... Optical apparatus, 21 ... Groove part, 41 ... Sleeve insertion Hole, 42 ... adhesive injection hole, 51 ... opening, 52 ... cylindrical projection, 53 ... screw hole, 54 ... adhesive, 71 ... work plate, 72 ... lens holder mounting part, 73 ... lens holder mounting hole, 74: Reflecting section, 75: Opening section, 76: Horizontal driving section, 77 ... Sleeve holder fixing plate, 78 ... Sleeve holder fixing section, 79 ... Vertical driving section, 80 ... Sleeve gripping section, 81 ... Adjusting device, 82 DESCRIPTION OF SYMBOLS ... Target 82 ... Pinhole, 84 ... Laser light source, 85 ... Laser light, 86 ... Reflector plate, 87 ... Reflector plate, 91 ... Case, 92 ... Sample mounting part, 93 ... Sample, 94 ... Cover, 9 DESCRIPTION OF SYMBOLS ... Screw 96. Aperture 97. Light receiving part 100 ... Conventional optical device 101 ... Conventional casing 102 ... Conventional light emitting part 103 ... Conventional aperture 104 ... Conventional laser light , 105... Sample mounting portion in the conventional example, 106... Sample in the conventional example, 107... Cover in the conventional example, 108.

Claims (11)

A light source fixing member for fixing the light source;
A housing member that houses at least a portion of the light source fixing member;
A collimating lens fixing member that fixes a collimating lens that receives light emitted from the light source and contacts the housing member;
The housing member is configured to adjust the distance between the light source and the collimating lens in the optical axis direction by moving the light source fixing member in the optical axis direction of light emitted from the light source. The light source fixing member is adhered after the adjustment of
The collimating lens fixing member is configured to adjust a relative position between the light source and the collimating lens in a direction orthogonal to the optical axis by moving the housing member in a direction orthogonal to the optical axis, The collimating apparatus, wherein the housing member is bonded after adjusting the relative position.   The collimating apparatus according to claim 1, wherein the housing member and the light source fixing member are bonded to each other by applying an adhesive in a spot shape at a plurality of locations.   The collimating device according to claim 1, wherein the collimating lens fixing member and the housing member are bonded by applying an adhesive in a dot shape at a plurality of locations.   4. The collimating device according to claim 1, wherein the housing member has a hole that penetrates toward the collimating lens fixing member and is configured to be able to inject an adhesive. 5.   The collimating apparatus according to claim 2, wherein the adhesive is an ultraviolet curable adhesive. A light source fixing member that fixes a light source; a housing member that houses at least a portion of the light source fixing member; a collimating lens fixing member that fixes a collimating lens that receives light emitted from the light source and contacts the housing member; An adjustment jig for a collimator device comprising:
A distance adjusting unit that adjusts a distance between the light source and the collimating lens in the optical axis direction by moving the light source fixing member in the optical axis direction of the light emitted from the light source with respect to the housing member;
A position adjusting unit that adjusts a relative position between the light source and the collimating lens in a direction orthogonal to the optical axis by moving the housing member in a direction orthogonal to the optical axis with respect to the collimating lens fixing member. A collimator adjustment jig characterized by that. A light source fixing member that fixes a light source; a housing member that houses at least a portion of the light source fixing member; a collimating lens fixing member that fixes a collimating lens that receives light emitted from the light source and contacts the housing member; A collimating device adjustment method comprising:
A distance adjusting step of adjusting the distance between the light source and the collimating lens in the optical axis direction by moving the light source fixing member in the optical axis direction of the light emitted from the light source with respect to the housing member;
A position adjustment step of adjusting a relative position of the light source and the collimating lens in a direction orthogonal to the optical axis by moving the housing member in a direction orthogonal to the optical axis with respect to the collimating lens fixing member;
A first bonding step of bonding the light source fixing member and the housing member after the adjustment of the distance;
A collimating device adjusting method comprising: a second bonding step of bonding the housing member and the collimating lens fixing member after adjusting the position.   The collimator adjustment method according to claim 7, wherein an ultraviolet curable adhesive is used in at least one of the first bonding step and the second bonding step. A light-emitting unit that is a light source;
A collimating unit having a lens for adjusting the irradiation direction of the light emitted from the light emitting unit;
A sample mounting unit for mounting a sample to be measured on which light from the collimating unit is incident;
A reflecting part for reflecting light from the sample mounting part;
A light receiving portion for receiving light from the reflection portion,
The optical system is characterized in that the collimating section is provided on a surface inclined so as to face the sample mounting section so that the optical axis of the light from the light emitting section and the sample to be measured intersect. apparatus. The reflection part is provided above the sample mounting part,
The optical device according to claim 9, wherein the light incident on the sample to be measured is totally reflected by the reflection unit. The sample mounting part is provided on the main surface,
The optical device according to claim 9 or 10, wherein the collimating device is provided on a side surface that forms a predetermined angle with the main surface.

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