JP2014010399A - Imaging device and lens device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compound-eye imaging device capable of concurrently acquiring focused images with different field angles for a subject ranged in distance from infinite to extremely close.SOLUTION: A compound-eye imaging device has: a plurality of imaging optical systems 110a, 110b, 120a, 120b, 130a, 130b, 140a and 140b which perform partial focusing and have different focal distances; imaging elements 210a to 210f with imaging areas corresponding to respective imaging optical systems; and satisfies a predetermined conditional equation.

Description

  The present invention relates to a compound eye imaging device and a lens device.

  Patent Document 1 proposes a compound eye imaging device that captures images so that a short-focus lens and a long-focus lens having different angles of view include the same part of the subject. In this compound-eye imaging device, a zoomed-up image obtained from an image sensor corresponding to a long focus lens is fitted into a part of an image obtained from an image sensor corresponding to a short focus lens. Patent Document 2 proposes an imaging apparatus in which a plurality of single-focus lens systems having different focal lengths are switched and used, and a light receiving unit moves on the optical axis of a lens system having a desired focal length during photographing. Patent Document 3 proposes a compound eye imaging device in which each individual eye is composed of a front group and a rear group, and the front group and the rear group are integrally molded.

JP 2005-303694 A JP 2001-330878 A Japanese Patent Laying-Open No. 2005-341301

  In the configurations of Patent Documents 1 and 3, when focusing is performed with a lens group configured by integral molding in a plurality of optical systems having different focal lengths, in-focus images with different angles of view cannot be acquired simultaneously. If the lens groups are not integrally molded, it will be possible to simultaneously acquire in-focus images with different angles of view by controlling the lens groups individually, but a drive mechanism should be provided for each lens group and controlled. Therefore, the compound-eye imaging device becomes large and the configuration becomes complicated. Since Patent Document 2 also has only one sensor for a plurality of optical systems, it is impossible to acquire in-focus images with different angles of view at the same time.

  The present invention exemplifies providing an imaging device and a lens device having a plurality of optical systems with different focal lengths capable of simultaneously acquiring in-focus images with different angles of view for subjects from infinity to the nearest. Purpose.

An imaging apparatus according to the present invention has a plurality of imaging optical systems that have different focal lengths and form an optical image of an object, and imaging regions that respectively correspond to the plurality of imaging optical systems. An imaging device that photoelectrically converts the optical image formed by the optical system, and each imaging optical system is disposed closest to the object side of the imaging optical system and is moved when the subject position changes. A fixed lens unit fixed to the focus lens unit is included, and the focus lens unit includes a focus lens. The focus lens includes: an imaging optical system having the focus lens; and a focusing lens of the imaging optical system that is adjacent in a direction perpendicular to the optical axis of the imaging optical system and has a different focal length from the imaging optical system; Have different surface shapes and satisfy the following conditional expressions.
0.8 <| ffi / ffh | <1.2
| (ΔOf + Δf) / ft | <2.1
However,
Δf = ffi-ffh
ΔOf = Ofi-Ofh
ft is the longest focal length of the plurality of imaging optical systems, ffh is the focal length of the focus lens unit of any imaging optical system h among the plurality of imaging optical systems, and fi is the plurality of imaging optics. Of the system, the focal length of the focus lens unit of any imaging optical system i, Ofh is the distance from the front principal point position of the focus lens unit of the imaging optical system h to the image plane, Ofi is the imaging optical system i. This is the distance from the front principal point position of the focus lens unit to the image plane.

  According to the present invention, it is possible to provide a compound eye imaging device and a lens device having a plurality of optical systems having different focal lengths, capable of simultaneously acquiring in-focus images with different angles of view for subjects from infinity to the nearest. be able to.

It is a block diagram of the compound eye imaging device of this embodiment. (Examples 1, 2, 3, 4, 5) It is a perspective view of the imaging unit of the compound eye imaging device shown in FIG. (Examples 1, 2, 3, 4, 5) It is a front view of the imaging unit shown in FIG. (Examples 1, 2, 3, 4, 5) It is an example of the picked-up image by each imaging optical system shown in FIG. (Examples 1, 2, 3, 4, 5) FIG. 2 is a partially enlarged perspective view of a focus driving mechanism of the compound eye imaging apparatus shown in FIG. 1. (Examples 1, 2, 3, 4, 5) It is a lens sectional view of a wide single eye, a wide middle single eye, a telemid single eye, and a tele single eye of the compound eye optical system of the present invention. Example 1 FIG. 7 is a wide aberration diagram of Numerical Example 1 corresponding to the compound-eye optical system shown in FIG. 6. Example 1 FIG. 7 is an aberration diagram of the wide middle of Numerical Example 1 corresponding to the compound-eye optical system shown in FIG. 6. Example 1 FIG. 7 is an aberration diagram of the teleiddle of Numerical Example 1 corresponding to the compound-eye optical system shown in FIG. 6. Example 1 FIG. 7 is a tele aberration diagram of Numerical Example 1 corresponding to the compound-eye optical system shown in FIG. 6. Example 1 It is a lens sectional view of a wide single eye, a wide middle single eye, a telemid single eye, and a tele single eye of the compound eye optical system of the present invention. (Example 2) FIG. 9 is a wide aberration diagram of Numerical Example 2 corresponding to the compound-eye optical system shown in FIG. 8. (Example 2) FIG. 10 is an aberration diagram of the wide middle of Numerical Example 2 corresponding to the compound-eye optical system illustrated in FIG. 8. (Example 2) FIG. 10 is an aberration diagram of the teleiddle of Numerical Example 2 corresponding to the compound-eye optical system illustrated in FIG. 8. (Example 2) FIG. 9 is an aberration diagram for telephoto of Numerical Example 2 corresponding to the compound-eye optical system shown in FIG. 8. (Example 2) It is a lens sectional view of a wide single eye, a wide middle single eye, a telemid single eye, and a tele single eye of the compound eye optical system of the present invention. (Example 3) FIG. 11 is a wide aberration diagram of Numerical Example 3 corresponding to the compound-eye optical system illustrated in FIG. 10. (Example 3) FIG. 11 is an aberration diagram of the wide middle of Numerical Example 3 corresponding to the compound eye optical system illustrated in FIG. 10. (Example 3) FIG. 11 is an aberration diagram of the teleiddle of Numerical Example 3 corresponding to the compound-eye optical system illustrated in FIG. 10. (Example 3) FIG. 11 is an aberration diagram for telephoto of Numerical Example 3 corresponding to the compound-eye optical system shown in FIG. 10. (Example 3) It is a lens sectional view of a wide single eye of a compound eye optical system of the present invention, and a tele single eye. Example 4 FIG. 13 is an aberration diagram of wide and telephoto in Numerical Example 4 corresponding to the compound-eye optical system shown in FIG. 12. Example 4 It is a lens sectional view of a wide single eye, a wide middle single eye, a telemid single eye, and a tele single eye of the compound eye optical system of the present invention. (Example 5) FIG. 15 is a wide aberration diagram of Numerical Example 5 corresponding to the compound-eye optical system shown in FIG. 14. (Example 5) FIG. 15 is an aberration diagram of the wide middle of Numerical Example 5 corresponding to the compound eye optical system illustrated in FIG. 14. (Example 5) FIG. 15 is an aberration diagram of the teleiddle of Numerical Example 5 corresponding to the compound-eye optical system illustrated in FIG. 14. (Example 5) FIG. 16 is a diagram of tele aberration of Numerical Example 5 corresponding to the compound-eye optical system illustrated in FIG. 14. (Example 5) FIG. 6 is a cross-sectional view for explaining a relationship between a change in subject distance and an image plane movement amount. (Examples 1, 2, 3, 4, 5) It is sectional drawing for demonstrating the relationship between to-be-photographed object distance fluctuation | variation and image plane movement amount in two optical systems from which a focal distance differs. (Examples 1, 2, 3, 4, 5)

  In the present embodiment, zooming is realized by an image pickup device having a plurality of single focus optical systems having different focal lengths as an image pickup optical system and having an image pickup region corresponding to each single focus optical system. A plurality of imaging elements may be provided, or the imaging area of one imaging element may be divided. And in order to implement | achieve a continuous zoom function, several focused images of a different angle of view are imaged simultaneously. At this time, a part of the photographed image is trimmed, and the difference between different angles of view is interpolated by a digital zoom that obtains the same effect as that of the pseudo zooming by expanding the trimmed range. In addition, by fitting a telephoto image obtained by an imaging device corresponding to a telephoto lens into a part of an image obtained by digital zoom, this embodiment has a high resolution in part and a low resolution in other parts. An image with an intermediate angle of view is obtained.

  In the present embodiment, in order to realize a small imaging device capable of simultaneously capturing a plurality of in-focus images having different angles of view, the movement amounts of the focus groups of the respective optical systems are made substantially equal.

  First, the relationship of the image plane movement amount due to the change in the subject distance will be described with reference to FIG. FIG. 16 is a schematic diagram illustrating a state where focusing is performed with a group including the lens on the most object side. The focus group (focus lens unit) is F, the movement amount of the focus group movement amount is ΔA, the non-moving lens group on the image side of the focus group is R, and the object is at infinity (reference movement) A state where an image is formed on the image plane with an amount ΔA = 0.

  In FIG. 16, a focus group drawn by a broken line represents a focus group in the reference state. The front principal point position of the focus group is HF, the rear principal point position is HF ′, the front principal point position of the focus group is HR, the rear principal point position is HR ′, the front focal point position of the focus group is PF, and the rear focal point is The position is PF ′, the front focal position of the rear group R is PR, and the rear focal position is PR ′.

  In FIG. 16, since the optical system is a simplified model, the principal point positions HF and HF ′ and the principal point positions HR and HR ′ coincide with each other, but they do not necessarily coincide with each other in the actual optical system. Here, when the focal length of the focus group F is ff, the distance x from the front focal position PF of the focus group F to the object, and the distance x ′ from the rear focal position PF ′ to the imaging position of the focus group F The following relational expression holds between

xx ′ = − ff ² (1)
In the reference state, since the distance x is infinite, x ′ = 0 from Formula (1), that is, the rear focal position PF ′ of the focus group F and the position of the imaging plane of the focus group F coincide.

  As shown in FIG. 16, when the optical system is divided into the focus group F and the rear group R, it can be considered that the image formed by the focus group F is formed on the image plane by the rear group R. In this optical system, since the rear group R is a fixed group when focusing, in order to always form an image of the subject at the same position, the position of the imaging surface of the focus group F must always be constant. Therefore, in order to always form an image of the subject at the position of the image plane in the reference state, it is only necessary to move the focus group F by the distance x ′ when the subject is at the distance x, and move toward the subject side. Is negative and the movement toward the image plane side is positive, the amount of movement of the focus group is expressed by the following equation.

ΔA = −x ′ (2)
Further, assuming that the distance S1 from the most object side surface of the optical system to the object in the reference state and the distance from the most object side surface of the optical system to the front principal point position HF of the focus group is O1, the front focal position PF The distance x to the object is expressed by the following equation.

x = (S1-O1 + ff + x ′) (3)
The following formula is obtained from the formulas (1) to (3).

ΔA ² (S1−O1 + ff) ΔA + ff ² = 0 (4)
When this is solved for ΔA, the following equation is obtained.

  By setting the movement amount of the focus group so as to satisfy Expression (5), it is possible to always keep the imaging plane of the subject of the optical system constant.

  FIG. 17 is a cross-sectional view for explaining the relationship between the subject distance variation and the image plane movement amount of two optical systems having different focal lengths. Both optical systems focus on the lens groups Fw and Ft including the lens closest to the subject. In order to make the movement amounts of the focus groups of the two optical systems equal, the focus group movement amount ΔAw of the wide-angle side optical system and the focus group movement amount ΔAt of the telephoto side optical system are equal, so ΔAw = ΔAt. Find the conditions. In each optical system, Expression (5) is satisfied, and therefore, the amount of movement of the focus group of the two optical systems can be made equal by satisfying the following two expressions.

_{S1 w -O1 w + ff w =} S1 t -O1 t + ff t ··· (6)
ff _w ² = ff _t ² (7)
Here, the focal length of the focus group is ff _w , ff _t , the distance S1 _w , S1 _t from the most object side surface of the optical system in the reference state to the subject, and the front principal point position of the focus group is HF _w , HF _t And Further, the distances from the most object side surface of the optical system to the front principal point positions HF _w and HF _t of the focus group are respectively O1 _w and O1 _t , the subscript w is the wide angle side, and t is the telephoto side optical system. means.

  Since Equation (7) means that the absolute value of the focal length of the focus group is equal, the case is divided into cases where the focal length of the focus group is positive and negative.

  When the focal length of the focus group has the same sign, Equation (6) can be modified as follows.

_{S1 w -O1 w = S1 t -O1} t ··· (8)
Left and right side of Equation (8), a front principal point position of the focus group HF _w, represents the distance from HF _t to the subject, to equalize the distance to the object from the front principal point position of the focus group HF _w, HF _t As a result, the amount of image plane movement due to the subject distance variation can be made substantially equal.

  On the other hand, when the focal lengths of the focus groups have different signs, Equation (6) can be modified as follows.

_{S1 w -O1 w - (S1 t} -O1 t) + 2ff w = 0 ··· (9)
From the equation (9), when the focal length of the focus group has an opposite sign, just by making the distance from the front principal point positions HFw, HFt to the subject equal, as in the case of the same sign in the equation (8) It can be seen that the amount of image plane movement due to distance variation cannot be made equal. In other words, in order to make the image plane movement amount due to subject distance fluctuations equal, it is better not to make the distance from the front principal point position of the focus group to the subject equal, and the principal point position of the focus group of each optical system is shifted. You can see that the balance is better. In addition, when the subject is at a position sufficiently away from the optical system, ff _w << S1 _w −O1 _w, and thus the influence is reduced. However, the closer the subject is to the optical system, the greater the influence is. In this situation, if each optical system is focused while keeping the amount of movement of the focus group constant, it is possible to focus on each subject at the same time for distant subjects, but one subject for the closest subject. There is a risk that such an optical system may cause an adverse effect such as being out of focus.

Therefore, in the present embodiment, when the focal length of the focus group has the same sign, the focus amount with different angles of view is reduced by reducing the deviation amount of the front principal point position of the focus group and the deviation amount of the focal length of the focus group. Images can be acquired at the same time. On the other hand, when the focal lengths of the focus groups have different signs, the principal point positions HF _w and HF _t of the focus groups of the respective optical systems are deliberately shifted so that a different angle-of-view image that is in focus at the same time for the closest subject can be obtained. An obtainable configuration is realized.

  It should be noted that the focal length and principal point position of the focus group do not necessarily coincide with each other in practice. This is because even if there is a slight deviation due to the influence of diffraction or aberration, there is a case where there is substantially no influence as long as it is within the circle of confusion. However, even if these effects are taken into account, it is possible to deal with a closer subject by moving the focus point position of the focus group of each optical system as described above compared to the case where the focus point positions are matched. You can say that.

  FIG. 1 is a block diagram of the compound eye imaging apparatus 1 of the present embodiment, FIG. 2 is a perspective view of the imaging unit 100 of the compound eye imaging apparatus 1, and FIG. 3 is a front view of the imaging unit 100.

  The compound eye imaging apparatus 1 includes an imaging unit 100, an A / D converter 10, an image processing unit 20, a system controller 30, an imaging control unit 40, an information input unit 50, an image recording medium 60, and a display unit 70. The compound-eye imaging device 1 may be a lens-integrated imaging device, or may include a lens device having an imaging optical system (imaging optical system), and an imaging device main body having an imaging element on which the lens device is detachably mounted. May be.

  As shown in FIGS. 1-3, the imaging unit 100 includes eight imaging optical systems (imaging optical systems) 110a, b, 120a, b, 130a, b, 140a, b, each of which forms an optical image of an object. And a plurality of imaging elements respectively corresponding to one of the plurality of imaging optical systems. FIG. 1 is a cross-sectional view including the optical axes of the imaging optical systems 110a and 140a of the imaging unit 100.

  Each imaging optical system includes a focus group unit (focus lens unit, front group unit) 105F and a rear group unit (fixed lens unit) 105R. As shown in FIG. 1, the focus group unit 105F is integrally held and driven by the holding unit 300 so as to move by the same amount when the subject position changes (during focusing). The rear group unit 105R is integrally held by the holding unit 310 and is fixed at the time of focusing, and includes other members such as a diaphragm (not shown) for each imaging optical system. As described above, a method of moving a part of the optical system integrally during focusing is known as partial focus. The number of focus lenses of each imaging optical system mounted on the focus group unit 105F is one or more.

  The plurality of image sensors 210 a to 210 f are integrally held to constitute the image sensor unit 200. The imaging element 210a corresponds to the imaging optical system 110a, the imaging element 210b corresponds to the imaging optical system 120a, the imaging element 210c corresponds to the imaging optical system 110b, and the imaging element 210d corresponds to the imaging optical system 120b. To do. The imaging element 210e corresponds to the imaging optical system 140a, the imaging element 210f corresponds to the imaging optical system 130a, the imaging element 210g corresponds to the imaging optical system 140b, and the imaging element 210h corresponds to the imaging optical system 130b. To do.

  As shown in FIG. 3, the optical axes of the eight imaging optical systems (single eyes) 110a, 120a, 130a, 140a, 110b, 120b, 130b, and 140b are arranged to be substantially parallel. The two imaging optical systems a and b assigned the same reference numbers have the same focal length, and in this embodiment, four sets of imaging optical systems having different focal lengths are provided. The imaging optical systems 110a and 110b (wide single eye) are a wide-angle imaging optical system pair having the shortest focal length among the eight imaging optical systems. The imaging optical systems 120a and 120b (wide middle single eye) have a longer focal length than the imaging optical systems 110a and 110b. The imaging optical systems 130a and 130b (tele-middle single eyes) have a longer focal length than the imaging optical systems 120a and 120b. The imaging optical systems 140a and 140b (tele eye) have a longer focal length than the imaging optical systems 130a and 130b.

  FIG. 4 shows captured images 1110a, 1120a, 1130a, 1140a corresponding to the imaging optical systems 110a, 120a, 130a, 140a. As shown in FIG. 4, the captured image 1110a corresponding to the imaging optical system 110a is the widest subject space, and the captured images 1120a, 1130a, and 1140a corresponding to 120a, 130a, and 140a are captured according to the focal length. The subject space is narrow.

  Referring back to FIG. 1, the imaging optical systems 110a and 140a constitute a compound eye, and the imaging elements 210a and 210e convert the optical images that have reached the imaging element surface via the imaging optical systems 110a and 140a, respectively, into electrical signals (analogues). Signal).

  The A / D converter 10 converts analog signals output from the image sensors 210 a to 210 f into digital signals and supplies them to the image processing unit 20.

  The image processing unit 20 performs predetermined pixel interpolation processing, color conversion processing, and the like on each image data from the A / D converter 10, and predetermined calculation processing is performed using each captured image data. . The result processed by the image processing unit 20 is transmitted to the system controller 30.

  The information input unit 50 acquires information input by the user by selecting a desired shooting condition by the information acquisition unit 51 and supplies data to the system controller 30. The system controller 30 controls the imaging control unit 40 based on the transmitted data. The imaging control unit 40 performs imaging corresponding to the amount of movement of the focus group unit 105F, the aperture value of each imaging optical system, and the exposure time. Necessary images are acquired by controlling the elements.

  FIG. 5 is a partially enlarged perspective view of the focus drive mechanism of the image pickup unit 100. The holding unit 300 of the focus group unit 105F is rotationally restricted by a sleeve portion 403 fitted and held by a first guide bar 401 arranged parallel to the optical axis of each imaging optical system, and a second guide bar 402. The U-groove 404 is provided. The imaging unit 100 further includes an output shaft 405 that is rotated by an actuator such as a stepping motor (not shown), and a rack member 406 that meshes with the output shaft 405. Although the shape of the focus group unit 105F is different between FIGS. 2 and 5, these shapes are merely examples, and are actually the same shape.

  Accordingly, the holding unit 300 that holds the focus group unit 105F on which a part of the plurality of imaging optical systems is mounted integrally moves in the optical axis direction (the dotted line direction shown in FIG. 1) in accordance with the rotation of the output shaft 405. To do.

  Each focus group satisfies the following conditional expression (10) in order to make the amount of focusing movement the same in a plurality of imaging optical systems having different focal lengths. By photographing at the position of the focus group unit 105F controlled by the imaging control unit 40, a plurality of focused images having the same field angle as different subject space ranges (field angles) are acquired by one control.

  The image recording medium 60 stores a plurality of still images and moving images, and also stores a file header when an image file is configured. The display unit 70 displays an image, a state, an abnormality, and the like, and includes a liquid crystal display element.

  The following conditional expressions are satisfied when the focal lengths of the respective focus groups of any of the plurality of imaging optical systems i and h are ffh and ffi.

0.8 <| ffi / ffh | <1.2 (10)
Conditional expression (10) defines a condition for making the amount of focusing movement the same in any imaging optical system having different focal lengths. If the upper limit of the conditional expression (10) is exceeded, the focus deviation amount of the imaging optical system i is less than that of the imaging optical system i when the focus group is moved by the same amount so that the imaging optical system h is in focus. The image is out of focus beyond the depth of focus range. When the lower limit of the conditional expression (10) is exceeded, the focus deviation amount of the imaging optical system i is in the imaging optical system i when the focus group is moved by the same amount so that the imaging optical system h is in focus. The image is out of focus beyond the depth of focus range.

  By satisfying conditional expression (10), the amount of defocus is within the depth of focus of an arbitrary imaging optical system, and it is possible to obtain focused images with different angles of view at the same time with the same focus group movement amount.

  As described above, by appropriately defining the focal length of the focus group included in each imaging optical system, the focusing movement amount of the imaging optical systems having different focal lengths can be made the same amount. Therefore, simultaneous acquisition of in-focus images with different angles of view and simplification of the focus drive mechanism can be achieved.

The distance from the front principal point position of the focus group of the imaging optical system h to the image plane is Ofh, the distance from the front principal point position of the focus group of the imaging optical system i to the image plane is Ofi, and the focal length is the largest. When the focal length f _t of the long imaging optical system, it is preferable to satisfy the following condition.

| (ΔOf + Δf) / ft | <2.1 (11)
However, Δf = ffi−ffh and ΔOf = Ofi−Ofh. Conditional expression (11) performs focusing on a subject at an arbitrary distance in the compound-eye optical system, and realizes the simultaneous acquisition of focused images with different angles of view, and the principal point position of the focus group in each imaging optical system And a conditional expression that defines the relationship between the focal length of the focus group. By satisfying the condition defined by the conditional expression (11), it is possible to acquire in-focus images with different angles of view at the same time with the same focus group movement amount even for a short-distance subject.

  By satisfying conditional expression (10), it is possible to simultaneously obtain in-focus images with different angles of view for subjects that are some distance away from the first surface of the optical system. In order to realize simultaneous acquisition of a focused image, it is necessary to satisfy conditional expression (11).

  When the upper limit of conditional expression (11) is exceeded, when the focusing optical system h is focused by moving the focus group by the same amount with respect to the closest subject, the focal shift amount is the focal depth in the imaging optical system i. Out of range and out of focus. The same applies to the case where the imaging optical system h and the imaging optical system i are interchanged. When the focus group is moved by the same amount, even if the imaging optical system i is in focus, the shift amount of the focal length of the focus group Alternatively, the imaging optical system h becomes out of focus due to the influence of the position of the front principal point. The smaller the value on the right side of conditional expression (11), the closer the focus is possible.

  Further, among the plurality of imaging optical systems, the distance from the focus group front principal point position to the image plane of the optical system in which the focus group has negative refractive power is Ofn, and the focus of the optical system in which the focus group has positive refractive power The distance from the front side principal point position to the image plane is set to Ofp. At this time, it is preferable that the following conditional expression is satisfied.

1.0 <Ofn / Ofp <2.4 (12)
Conditional expression (12) performs focusing on a subject at any distance from infinity to the closest position even when the signs of the focal lengths of the focus groups are different between the imaging optical systems, and focuses images with different angles of view. This is a conditional expression that should be satisfied in order to achieve simultaneous acquisition of. Here, for convenience of explanation, an imaging optical system in which the focal length of the focus group is negative is n, and an imaging optical system in which the focal length of the focus group is positive is p. When the focal length of the focus group is different, the position of the front focal point of the imaging optical system p is closer to the subject side than the imaging optical system n. Thus, simultaneous acquisition of in-focus images having different angles of view can be realized.

  When the upper limit of conditional expression (12) is exceeded, the distance from the front principal point position of the focus group of the imaging optical system n to the image plane becomes larger than the imaging optical system p, and the actual lens position and principal point position are increased. When trying to bring them closer together, the overall length differs greatly between the imaging optical systems. In this case, the overall length of the imaging optical system p becomes too short, and the longitudinal chromatic aberration of the imaging optical system p cannot be corrected sufficiently. If the total length of the image forming optical system p is increased, the image forming optical system n needs to be further lengthened, so that the compound eye optical system becomes enormous. Conversely, if the actual lens position is aligned between the imaging optical systems and only the principal point position is shifted, the lens shape becomes a strong menis overall, resulting in higher-order aberrations and reduced sensitivity. It becomes difficult to suppress various aberrations.

  On the other hand, if the lower limit of the conditional expression (12) is exceeded, the shift amount of the front principal point position of the focus group with respect to the shift amount of the front focus position of the focus group becomes too small, and the same movement amount of the focus group with respect to the closest subject Simultaneous acquisition of focused images with different angles of view cannot be realized.

  As described above, it is necessary to satisfy the conditional expression (12) in order to simultaneously obtain in-focus images having different angles of view with the same movement amount of the focus group with respect to the closest subject. By keeping the relationship of the front principal point positions of the focus group within this range, it is possible to correct the deviation amount of the front focal position.

  Further, it is preferable that the following conditional expression is satisfied with respect to the focal length ffi of the focus group included in any imaging optical system i among the plurality of imaging optical systems and the focal length ft of the imaging optical system having the longest focal length. .

0.5 <| ffi / ft | <1.6 (13)
Conditional expression (13) defines a condition for reducing the occurrence of chromatic aberration and curvature of field and making the focusing movement amount of the imaging optical systems having different focal lengths the same amount. If the upper limit of conditional expression (13) is exceeded, the amount of focusing movement becomes too large with respect to the focal length of the imaging optical system, the overall length of the optical system becomes long, and the entire imaging apparatus becomes large. When the lower limit of conditional expression (13) is exceeded, the focal length of the focus group becomes too small with respect to the focal length of the imaging optical system, making it difficult to correct curvature of field and focus variation of chromatic aberration.

  Further, in order to facilitate the integral holding, they are arranged so as to be in substantially the same position as the lenses constituting the other optical system adjacent to each optical axis in the vertical direction. In addition, each lens is made of the same material as the lens constituting the other optical system adjacent to each optical axis in the vertical direction so that integral molding is possible. However, in the plurality of focus lens units, at least one focus lens adjacent in a direction perpendicular to each optical axis may be made of the same material. In addition, the front lens position of each optical system is configured to be substantially the same so that the light flux of each optical system does not interfere with other optical systems. Further, the image plane (imaging region) position is configured to be substantially the same position so that the arrangement and adjustment of the image sensor are simplified. The surface shape of the lens constituting each optical system is configured to be different from the lens constituting the other optical system adjacent in the direction perpendicular to each optical axis. Even when the same material is used for different surface shapes, sufficient optical imaging performance can be achieved. Further, in order to realize a sufficiently high zoom ratio as an imaging device, the focal length ratio of the wide single eye and the tele single eye is configured to be 1.5 times or more.

  6A, 6 </ b> B, 6 </ b> C, and 6 </ b> D are respectively a wide single eye, a wide middle single eye, a telemid single eye of the first compound eye optical system of Example 1 applicable to the compound eye imaging apparatus 1. It is a lens sectional view of a tele individual eye. In the lens cross-sectional view, the left side is the subject side (object side) (front), and the right side is the image side (rear). F is a focus group, R is an image side group (rear group), SP is an aperture stop, and IP is an image plane. The image plane IP corresponds to an imaging plane of a solid-state imaging device (photoelectric conversion device) such as a CCD sensor or a CMOS sensor. When using a silver salt film, it corresponds to the film surface. This also applies to other embodiments.

  7A, 7B, 7C, and 7D are aberration diagrams of wide, wide middle, telemiddle, and tele corresponding to the first compound eye optical system. In the aberration diagrams, d and g are the d-line and g-line, respectively, and ΔM and ΔS are the meridional image surface and the sagittal image surface. Lateral chromatic aberration is represented by the g-line. ω is a half angle of view, and Fno is an F number. This also applies to other embodiments.

  In the first compound eye optical system, the focus group F moves to the object side and the image side group R is fixed (front lens focus type) during focusing from an infinitely distant subject to a short-distance subject. Hereinafter, the lens configuration of each lens group is in order from the object side to the image side.

  In the wide single eye shown in FIG. 6A, the focus group F includes a meniscus negative lens having a concave surface facing the image side, a biconvex positive lens having an Abbe number of 68.3, and a negative lens. This system effectively reduces the size of the system and corrects distortion and chromatic aberration. The image side group R includes a biconvex positive lens, a positive lens, and a negative lens.

  6B, the focus group F includes a meniscus negative lens having a concave surface facing the image side, a biconvex positive lens having an Abbe number of 68.3, and a negative lens. The optical system is downsized and distortion and chromatic aberration are effectively corrected. The image side group R includes a biconvex positive lens, a negative lens, and a negative lens.

  In the telemiddle eye shown in FIG. 6C, the focus group F is composed of a biconcave negative lens, a biconvex positive lens having a Abbe number of 68.3, and a negative lens. Is effectively corrected. The image side group R includes a meniscus negative lens having a concave surface facing the image side, a positive lens, and a meniscus negative lens having a concave surface facing the image side.

  In the telescopic eye shown in FIG. 6D, the focus group F is composed of a positive lens, a biconvex positive lens having a Abbe number of 68.3, and a negative lens, which is effective in reducing the size of the optical system and correcting chromatic aberration. Is going. The image side group R includes a meniscus negative lens having a concave surface facing the image side, a positive lens, and a meniscus negative lens having a concave surface facing the image side.

  The present embodiment provides a compound-eye imaging device that can simultaneously acquire in-focus images with different angles of view and simplify the focus driving mechanism, and can achieve a thin, high zoom ratio and zooming processing after shooting. it can. That is, it is possible to easily acquire space information about a subject space to be photographed while an imaging device such as a video camera or a digital camera is thin and has a high zoom ratio.

  8A, 8 </ b> B, 8 </ b> C, and 9 </ b> D are views of a wide single eye, a wide middle single eye, a telemiddle single eye of the second compound eye optical system of Example 2 that can be applied to the compound eye imaging apparatus 1. It is a lens sectional view of a tele individual eye. 9A, 9B, 9C, and 9D are aberration diagrams of wide, wide middle, telemiddle, and tele corresponding to the second compound eye optical system.

  In the second compound eye optical system, the focus group F moves to the object side and the image side group R is fixed during focusing from an infinitely distant subject to a short-distance subject (front lens focus type). Hereinafter, the lens configuration of each lens group is in order from the object side to the image side.

  In the wide single eye shown in FIG. 8A, the focus group F includes a meniscus negative lens having a concave surface facing the image side, a positive lens having an Abbe number of 68.3, and a negative lens. Thus, distortion and chromatic aberration are effectively corrected. The image side group R includes a biconvex positive lens, a positive lens, and a negative lens.

  In the wide middle single eye shown in FIG. 8B, the focus group F includes a negative lens, a positive lens having an Abbe number of 68.3, and a negative lens. The optical system can be downsized and distortion and chromatic aberration can be corrected. It is done effectively. The image side group R includes a biconvex positive lens, a positive lens, and a negative lens.

  In the telemiddle eye shown in FIG. 8C, the focus group F is composed of a biconcave negative lens, a biconvex positive lens having a Abbe number of 68.3, and a negative lens. Is effectively corrected. The image side group R includes a meniscus negative lens having a concave surface facing the image side, a positive lens, and a meniscus negative lens having a concave surface facing the image side.

  In the telescopic eye shown in FIG. 8D, the focus group F is composed of a positive lens, a positive lens having an Abbe number of 68.3, and a negative lens, which effectively reduces the size of the optical system and corrects chromatic aberration. Yes. The image side group R includes a meniscus negative lens and a positive lens having a concave surface facing the image side, and a meniscus positive lens having a concave surface facing the image side.

  The present embodiment provides a compound-eye imaging device that can simultaneously acquire in-focus images with different angles of view and simplify the focus driving mechanism, and can achieve a thin, high zoom ratio and zooming processing after shooting. it can. That is, it is possible to easily acquire space information about a subject space to be photographed while an imaging device such as a video camera or a digital camera is thin and has a high zoom ratio.

  10A, 10B, 10C, and 10D show the wide single eye, wide middle single eye, and telemiddle single eye of the third compound eye optical system of Example 3 that can be applied to the compound eye imaging apparatus 1. FIG. It is a lens sectional view of a tele individual eye. FIGS. 11A, 11 </ b> B, 11 </ b> C, and 11 </ b> D are aberration diagrams of wide, wide middle, telemiddle, and tele corresponding to the third compound eye optical system.

  In the third compound eye optical system, the focus group F moves to the object side and the image side group R is fixed (front lens focus type) during focusing from an infinitely distant subject to a close-distance subject. Hereinafter, the lens configuration of each lens group is in order from the object side to the image side.

  The wide single eye shown in FIG. 10A is composed of two meniscus negative lenses having a concave surface facing the image side and a meniscus positive lens having a convex surface facing the image side. It effectively reduces the size and corrects distortion and chromatic aberration. The image side group R is composed of two biconvex positive lenses and a biconcave negative lens.

  10B, the focus group F includes two meniscus negative lenses having a concave surface facing the image side and a meniscus positive lens having a convex surface facing the image side. Is effectively reduced and distortion and chromatic aberration are corrected. The image side group R includes a biconvex positive lens, a meniscus negative lens having a concave surface facing the image side, and a biconcave negative lens.

  In the telemiddle eye shown in FIG. 10C, the focus group F includes a meniscus positive lens having a concave surface facing the image side, a biconcave negative lens, and a biconvex positive lens. And correct chromatic aberration effectively. The image side group R includes a negative lens, a biconvex positive lens, and a meniscus negative lens having a concave surface facing the image side.

  10D, the focus group F includes a meniscus positive lens having a concave surface facing the image side, a biconcave negative lens, and a biconvex positive lens. And correct chromatic aberration effectively. The image side group R includes a meniscus positive lens having a convex surface facing the image side, a meniscus negative lens having a concave surface facing the image side, and a meniscus negative lens having a concave surface facing the image side.

  The present embodiment provides a compound-eye imaging device that can simultaneously acquire in-focus images with different angles of view and simplify the focus driving mechanism, and can achieve a thin, high zoom ratio and zooming processing after shooting. it can. That is, it is possible to easily acquire space information about a subject space to be photographed while an imaging device such as a video camera or a digital camera is thin and has a high zoom ratio.

  12A and 12B are lens cross-sectional views of the wide single eye and the tele single eye of the fourth compound eye optical system of the fourth embodiment applicable to the compound eye imaging device 1. FIGS. 13A and 13B are aberration diagrams of wide and tele corresponding to the fourth compound eye optical system.

  In the fourth compound eye optical system, the focus group F moves to the object side during focusing from an infinite subject to a short-distance subject, the image side group R is fixed for a wide single eye, and the image side group R for a tele single eye is fixed. Not present (front focus type with wide single eye, full extension type with tele single eye). Note that the entire extension is a method of forming a focused image on the sensor surface by moving the entire optical system in the optical axis direction according to the subject distance. Hereinafter, the lens configuration of each lens group is in order from the object side to the image side.

  In the wide single eye shown in FIG. 12A, the focus group F includes a meniscus negative lens having a concave surface facing the image side, a biconvex positive lens having a Abbe number of 68.3, and a negative lens. This system effectively reduces the size of the system and corrects distortion and chromatic aberration. The image side group R includes a positive lens, a positive lens, and a meniscus negative lens having a concave surface facing the object side.

  The telescopic eye shown in FIG. 12B includes a positive lens having a convex shape on both sides, a positive lens having a biconvex shape with an Abbe number of 68.3, a negative lens, a negative lens having a meniscus shape with a concave surface facing the image side, a positive lens. It consists of a lens and a positive lens.

  The present embodiment provides a compound-eye imaging device that can simultaneously acquire in-focus images with different angles of view and simplify the focus driving mechanism, and can achieve a thin, high zoom ratio and zooming processing after shooting. it can. That is, it is possible to easily acquire space information about a subject space to be photographed while an imaging device such as a video camera or a digital camera is thin and has a high zoom ratio.

  14A, 14 </ b> B, 14 </ b> C, and 14 </ b> D are a wide single eye, a wide middle single eye, a telemid single eye of the fifth compound eye optical system of Example 5 applicable to the compound eye imaging apparatus 1. It is a lens sectional view of a tele individual eye. 15A, 15B, 15C, and 15D are aberration diagrams of wide, wide middle, telemiddle, and tele corresponding to the fifth compound eye optical system.

  In the fifth compound eye optical system, the focus group F moves to the object side and the image side group R is fixed (front-lens focus type) during focusing from an infinitely distant subject to a short-distance subject. Hereinafter, the lens configuration of each lens group is in order from the object side to the image side.

  In the wide single eye shown in FIG. 14A, the focus group F includes a negative lens having a concave surface facing the image side, a positive lens having a biconvex shape and an Abbe number of 68.3, and a negative lens having a concave surface facing the image side. The optical system is effectively reduced in size and corrected for distortion and chromatic aberration. The image side group R includes a meniscus positive lens having a concave surface facing the image side, a biconvex positive lens, and a biconcave negative lens.

  14B, the focus group F includes a negative lens having a concave surface facing the image side, a biconvex positive lens having an Abbe number of 68.3, and a biconcave negative lens. The optical system is downsized and distortion and chromatic aberration are effectively corrected. The image side group R includes two biconvex positive lenses and a meniscus negative lens having a convex surface facing the image side.

  In the telemiddle eye shown in FIG. 14C, the focus group F has a meniscus negative lens having a concave surface facing the image side, a biconvex positive lens having an Abbe number of 68.3, and a convex surface facing the image side. It is composed of a meniscus negative lens, effectively reducing the size of the optical system and correcting chromatic aberration. The image side group R includes a meniscus negative lens having a concave surface facing the image side, a positive lens, and a meniscus negative lens having a concave surface facing the image side.

  In the telescopic eye shown in FIG. 14D, the focus group F has a meniscus negative lens having a concave surface facing the image side, a biconvex positive lens having an Abbe number of 68.3, and a convex surface facing the image side. It is composed of a meniscus negative lens, effectively reducing the size of the optical system and correcting chromatic aberration. The image side group R includes two meniscus positive lenses having a concave surface facing the image side and a meniscus negative lens having a concave surface facing the image side.

  The present embodiment provides a compound-eye imaging device that can simultaneously acquire in-focus images with different angles of view and simplify the focus driving mechanism, and can achieve a thin, high zoom ratio and zooming processing after shooting. it can. That is, it is possible to easily acquire space information about a subject space to be photographed while an imaging device such as a video camera or a digital camera is thin and has a high zoom ratio.

  Although the imaging unit shown in FIGS. 1 to 3 is simply configured by two lenses of the focus group F and the image side group R, the focus group holding unit is adapted to the optical systems of the first to fifth embodiments. It is possible to configure the drive unit.

  Hereinafter, specific numerical data of Numerical Examples 1 to 5 corresponding to the first to fifth compound eye optical systems will be shown. In each numerical example, i indicates the number of the surface counted from the object side. ri is the radius of curvature of the i-th optical surface (i-th surface). di is the axial distance between the i-th surface and the (i + 1) -th surface. ndi and νdi are the refractive index and Abbe number of the material of the i-th optical member with respect to the d-line, respectively. f is a focal length, Fno is an F number, and ω is a half angle of view. An interval d of 0 indicates that the front and back surfaces are joined.

  The aspherical shape is given by the following equation using R as the radius of curvature and aspherical coefficients K, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12.

X = (H ² / R) / [1+ {1− (1 + K) (H / R) 2} ^1/2 ] + A3 · H ³ + A4 · H ⁴ + A5 · H ⁵ + A6 · H ⁶ + A7 · H ⁷ + A8 · ^{H 8 + A9 · H 9 +} A10 · H 10 + A11 · H 11 + A12 · H 12 ··· (14)
“E ± XX” in each aspheric coefficient means “× 10 ± XX”.

  Table 5 shows a list of focal lengths of the focus groups in the numerical example, and Table 1 shows a relationship between the conditional expression (10) and the numerical example. Conditional expression (10) is a conditional expression established between the compound-eye optical systems, and Table 1 shows only a part of them. Specifically, the focal length of the focus group of the optical system having the largest focal length in each compound-eye optical system is substituted for ffh in conditional expression (10), and the focal length of the focus group of the target imaging optical system is substituted for ffi. The results are shown in Table 1. By satisfying conditional expression (10) for each optical system under such a calculation condition, when the same focus group movement amount is used for the tele-eye which has the shallowest depth of focus, all of the single-eye optical systems can match the same subject. It is possible to burn.

  Table 6 shows the distance from the front principal point position of each focus group to the image plane in the numerical example, and Table 2 shows the relationship between the conditional expression (11) and the numerical example. By configuring each imaging optical system so as to satisfy the conditional expression (11), simultaneous acquisition of a focused image is realized even for a subject at a shorter distance.

  Table 3 shows the relationship between the conditional expression (12) and the numerical examples. Conditional expression (12) is a conditional expression that is established between optical systems having different focal lengths of the focus group. Table 3 shows that the value of conditional expression (12) is the maximum in some numerical examples. Only those that are minimized are listed. In Numerical Example 1, Numerical Example 2, Numerical Example 3, and Numerical Example 5, the case where the calculation is performed with the single eye A and the single eye C is the maximum, and the case where the calculation is performed with the single eye B and the single eye D is the minimum. Therefore, those values are listed in Table 3. Since Numerical Example 4 is a two-lens optical system, the case where the maximum and minimum are calculated with the single eye A and single eye B is described. In each numerical example, each imaging optical system is configured so as to satisfy the conditional expression (12). Simultaneous acquisition is realized.

  Table 4 shows the relationship between the conditional expression (13) and the numerical examples. By configuring each imaging optical system so as to satisfy the conditional expression (13), the focusing optical amounts of the imaging optical systems having different focal lengths are substantially the same, and the various focal optics in which various aberrations are corrected well The system is realized.

The focal length, F number, and angle of view represent values when focusing on an object at infinity. BF is a value obtained by converting the distance from the final lens surface to the image plane into air.
(Numerical example 1)
Wide eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 40.382 1.30 1.62041 60.3 5.88
2 * 2.411 2.67 4.00
3 * 6.203 1.40 1.59240 68.3 3.87
4 * -11.433 0.50 3.49
5 * -62.116 0.80 1.80518 25.4 3.14
6 * 15.255 0.10 3.13
7 (Aperture) ∞ 0.10 3.14
8 * 6.018 1.20 1.64000 60.1 3.20
9 * -12.756 3.48 3.11
10 * 9.928 1.80 1.59240 68.3 4.65
11 * -11.658 0.50 4.57
12 * -28.136 1.00 1.84666 23.8 4.44
13 * 8.934 5.01
Image plane ∞

Aspheric data 1st surface
K = -8.61567e + 001 A 4 = -9.22230e-004 A 6 = 4.19663e-005
Second side
K = -9.30223e-001 A 4 = 7.19408e-003 A 6 = 6.36185e-004
Third side
K = 3.54414e + 000 A 4 = 2.81499e-003 A 6 = 2.34019e-004
4th page
K = -3.53906e + 000 A 4 = 1.43935e-003 A 6 = 1.07092e-004
5th page
K = 3.15676e + 000 A 4 = 1.79932e-003 A 6 = -9.65503e-004
6th page
K = 4.96423e + 001 A 4 = 1.09416e-003 A 6 = -7.97966e-004
8th page
K = -3.06847e + 000 A 4 = -1.51330e-004 A 6 = 3.84651e-004
9th page
K = 9.75797e + 000 A 4 = -3.28928e-004 A 6 = 5.50566e-004
10th page
K = -1.10481e + 001 A 4 = 2.90917e-004 A 6 = 5.26599e-004
11th page
K = 1.72650e + 001 A 4 = -4.08824e-003 A 6 = 9.11055e-004
12th page
K = -7.35482e + 001 A 4 = -1.54275e-002 A 6 = 3.85072e-004
Side 13
K = 7.43385e + 000 A 4 = -1.07701e-002 A 6 = 4.92519e-004

Various data focal length 5.20
F number 2.88
Angle of view 36.69
Statue height 3.88
Total lens length 17.91
BF 3.06
Entrance pupil position 3.15
Exit pupil position -4.86
Front principal point position 4.94
Rear principal point position -2.14

Single lens Data lens Start surface Focal length
1 1 -4.19
2 3 6.99
3 5 -15.14
4 8 6.55
5 10 9.34
6 12 -7.91

Wide middle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 6.194 1.30 1.62041 60.3 5.61
2 * 2.200 2.67 4.05
3 * 6.346 1.40 1.59240 68.3 3.96
4 * -26.449 0.50 3.86
5 * -41.518 0.80 1.80518 25.4 3.76
6 * 14.348 0.10 3.77
7 (Aperture) ∞ 0.10 3.75
8 * 4.979 1.20 1.64000 60.1 3.89
9 * -7.878 3.48 3.82
10 * -7.653 1.80 1.59240 68.3 4.02
11 * -7.611 0.50 4.64
12 * -12.407 1.00 1.84666 23.8 4.60
13 * 52.342 5.45
Image plane ∞

Aspheric data 1st surface
K = -5.86699e + 000 A 4 = -8.96118e-004 A 6 = 1.23087e-006
Second side
K = -1.11462e + 000 A 4 = 5.18382e-003 A 6 = 7.47793e-004
Third side
K = 2.23083e + 000 A 4 = 2.29189e-003 A 6 = 9.11689e-005
4th page
K = 3.98608e + 001 A 4 = -1.07969e-003 A 6 = -1.03444e-004
5th page
K = -2.66134e + 001 A 4 = 2.91291e-004 A 6 = -5.80559e-004
6th page
K = 3.25993e + 001 A 4 = 1.05064e-003 A 6 = -3.89850e-004
8th page
K = -3.31035e + 000 A 4 = 9.36039e-004 A 6 = 4.48060e-005
9th page
K = 1.62170e + 000 A 4 = -1.30807e-004 A 6 = 1.97962e-004
10th page
K = -1.84308e + 001 A 4 = -9.71624e-003 A 6 = 5.68105e-004
11th page
K = -2.88780e + 001 A 4 = -1.01570e-002 A 6 = 1.38466e-004
12th page
K = -9.00000e + 001 A 4 = -1.47730e-002 A 6 = -1.20913e-005
Side 13
K = -5.42659e + 001 A 4 = -8.67083e-003 A 6 = 3.90008e-004

Various data focal length 7.50
F number 2.88
Angle of View 27.32
Statue height 3.88
Total lens length 17.91
BF 3.06

Entrance pupil position 4.05
Exit pupil position -4.94
Front principal point position 4.52
Rear principal point position -4.44

Single lens Data lens Start surface Focal length
1 1 -6.28
2 3 8.78
3 5 -13.16
4 8 4.95
5 10 138.07
6 12 -11.76

Telemiddle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * -14.915 1.30 1.62041 60.3 6.70
2 * 69.090 2.67 6.19
3 * 5.672 1.40 1.59240 68.3 5.30
4 * -7.487 0.50 5.08
5 * -9.447 0.80 1.80518 25.4 4.14
6 * -22.100 0.10 3.74
7 (Aperture) ∞ 0.10 3.67
8 * 3.929 1.20 1.64000 60.1 3.60
9 * 2.484 3.48 3.41
10 * 6.037 1.80 1.59240 68.3 6.30
11 * 21.097 0.50 6.25
12 * 13.374 1.00 1.84666 23.8 6.25
13 * 6.940 5.99
Image plane ∞

Aspheric data 1st surface
K = 3.23218e + 000 A 4 = -3.05400e-004 A 6 = 4.53521e-005
Second side
K = -9.00000e + 001 A 4 = 1.59130e-004 A 6 = 5.15981e-005
Third side
K = -1.64767e + 000 A 4 = 2.27739e-003 A 6 = -6.09668e-006
4th page
K = -7.51140e + 000 A 4 = 2.83658e-004 A 6 = 7.41960e-005
5th page
K = 8.77500e + 000 A 4 = 1.90647e-004 A 6 = 7.09546e-004
6th page
K = 7.06211e + 000 A 4 = -1.29880e-003 A 6 = 6.54962e-004
8th page
K = -7.69118e-001 A 4 = -1.53255e-003 A 6 = -1.23634e-004
9th page
K = -9.82229e-001 A 4 = 2.51720e-004 A 6 = -1.95089e-004
10th page
K = -4.39310e + 000 A 4 = 2.05043e-003 A 6 = -1.72957e-005
11th page
K = 3.04604e + 001 A 4 = 9.28199e-004 A 6 = -1.81115e-004
12th page
K = 5.49088e + 000 A 4 = -1.18023e-003 A 6 = 3.43330e-005
Side 13
K = 2.34608e + 000 A 4 = -3.33103e-003 A 6 = 1.61864e-004

Various data focal length 10.50
F number 2.88
Angle of view 20.26
Statue height 3.88
Total lens length 17.91
BF 3.06

Entrance pupil position 4.64
Exit pupil position -5.12
Front principal point position 1.66
Rear principal point position -7.44

Single lens Data lens Start surface Focal length
1 1 -19.66
2 3 5.67
3 5 -21.09
4 8 -15.62
5 10 13.67
6 12 -18.35

Tele eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 36.807 1.30 1.62041 60.3 7.62
2 * -41.677 2.67 7.15
3 * 8.270 1.40 1.59240 68.3 5.38
4 * -7.910 0.50 4.98
5 * -9.885 0.80 1.80518 25.4 4.08
6 * -54.358 0.10 3.71
7 (Aperture) ∞ 0.10 3.66
8 * 5.124 1.20 1.64000 60.1 3.45
9 * 2.412 3.48 3.17
10 * 10.272 1.80 1.59240 68.3 6.40
11 * 16.743 0.50 6.42
12 * 9.281 1.00 1.84666 23.8 6.58
13 * 10.176 6.54
Image plane ∞

Aspheric data 1st surface
K = -9.00000e + 001 A 4 = 3.25623e-005 A 6 = 1.37046e-005
Second side
K = 6.54916e + 001 A 4 = 9.61894e-004 A 6 = 1.97095e-005
Third side
K = -5.20341e-001 A 4 = 2.82359e-003 A 6 = 1.62204e-005
4th page
K = -1.07451e + 001 A 4 = 1.35610e-003 A 6 = -1.75272e-005
5th page
K = 9.36306e + 000 A 4 = 3.65867e-003 A 6 = 3.57432e-004
6th page
K = -1.69149e + 001 A 4 = 1.12483e-003 A 6 = 6.25155e-004
8th page
K = -6.38373e-001 A 4 = -3.54965e-003 A 6 = 1.25622e-006
9th page
K = -9.28207e-001 A 4 = -1.83232e-003 A 6 = -1.58220e-004
10th page
K = 6.03894e-001 A 4 = 1.13103e-003 A 6 = 4.35985e-005
11th page
K = -8.36796e + 000 A 4 = 9.48431e-004 A 6 = -5.05453e-005
12th page
K = -2.24043e + 000 A 4 = -9.07528e-004 A 6 = 9.61281e-007
Side 13
K = 6.10242e + 000 A 4 = -2.60010e-003 A 6 = 1.92825e-005

Various data focal length 15.00
F number 2.88
Angle of view 14.48
Statue height 3.88
Total lens length 17.91
BF 3.06

Entrance pupil position 6.90
Exit pupil position -6.27
Front principal point position -2.20
Rear principal point position -11.94

Single lens Data lens Start surface Focal length
1 1 31.71
2 3 7.05
3 5 -15.13
4 8 -8.61
5 10 40.66
6 12 82.43

(Numerical example 2)
Wide eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * -15.549 1.70 1.62041 60.3 9.32
2 * 5.297 6.00 5.94
3 * -21.574 1.80 1.49700 81.5 4.31
4 * -6.160 0.50 4.30
5 * -60.682 0.80 1.84666 23.8 3.65
6 * -247.402 1.26 3.51
7 (Aperture) ∞ 2.16 3.60
8 * 7.864 1.20 1.59240 68.3 5.23
9 * -65.198 3.81 5.42
10 * 7.418 2.20 1.49700 81.5 6.38
11 * -4.540 0.50 6.37
12 * -2.561 1.00 1.84666 23.8 5.89
13 * -5.241 5.68
Image plane ∞

Aspheric data 1st surface
K = -9.00000e + 001 A 4 = 2.40773e-003 A 6 = -1.00607e-004 A 8 = 2.29263e-006
A10 = -2.45268e-008
Second side
K = -2.33052e + 000 A 4 = 8.76770e-003 A 6 = -1.12324e-004 A 8 = 1.59787e-005
A10 = -3.95043e-007
Third side
K = -7.34310e + 001 A 4 = -4.21675e-003 A 6 = -5.01453e-005 A 8 = 2.53959e-005
A10 = -1.23794e-005
4th page
K = -3.31004e-001 A 4 = -4.70929e-003 A 6 = 9.40943e-004 A 8 = -2.39785e-004
A10 = 1.39342e-005
5th page
K = -9.00000e + 001 A 4 = 1.91427e-003 A 6 = 9.94935e-004 A 8 = -2.72938e-004
A10 = 1.79532e-005
6th page
K = -9.00000e + 001 A 4 = 3.13282e-003 A 6 = 4.08003e-004 A 8 = -1.04956e-004
A10 = 3.69894e-006
8th page
K = -3.92356e + 000 A 4 = 6.68721e-005 A 6 = -1.81875e-004 A 8 = 1.27528e-005
A10 = -7.29409e-007
9th page
K = -1.52035e + 001 A 4 = -8.29437e-004 A 6 = -1.82468e-004 A 8 = 1.31931e-005
A10 = -5.81891e-007
10th page
K = 4.69580e-001 A 4 = 8.49677e-005 A 6 = -1.91505e-004 A 8 = -1.85306e-007
A10 = 3.24269e-007
11th page
K = -1.29407e + 001 A 4 = -2.00018e-003 A 6 = -1.00026e-004 A 8 = 4.40120e-006
A10 = 8.21368e-008
12th page
K = -5.27817e + 000 A 4 = 6.66070e-003 A 6 = -4.16248e-004 A 8 = -4.05938e-006
A10 = 7.85917e-007
Side 13
K = -1.56342e + 001 A 4 = 9.46117e-003 A 6 = 1.14746e-004 A 8 = -5.53169e-005
A10 = 2.24424e-006

Focal length 4.40
F number 2.88
Angle of View 41.37
Statue height 3.88
Total lens length 27.87
BF 4.93

Entrance pupil position 4.54
Exit pupil position -11.77
Front principal point position 7.78
Rear principal point position 0.53

Single lens Data lens Start surface Focal length
1 1 -6.18
2 3 16.70
3 5 -95.15
4 8 11.92
5 10 6.04
6 12 -7.13

Wide middle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * -6.311 1.70 1.62041 60.3 8.53
2 * -15.124 6.00 6.79
3 * -16.852 1.80 1.49700 81.5 4.62
4 * -8.778 0.50 4.41
5 * -23.424 0.80 1.84666 23.8 4.40
6 * -85.378 1.26 4.43
7 (Aperture) ∞ 2.16 4.61
8 * 5.516 1.20 1.59240 68.3 5.22
9 * -26.626 3.81 5.23
10 * -24.787 2.20 1.49700 81.5 4.87
11 * -4.618 0.50 4.96
12 * -2.450 1.00 1.84666 23.8 4.85
13 * -4.979 5.39
Image plane ∞

Aspheric data 1st surface
K = -6.14800e + 000 A 4 = 3.70943e-003 A 6 = -1.19809e-004 A 8 = 2.73722e-006
A10 = -2.86757e-008
Second side
K = -4.61616e + 001 A 4 = 4.57808e-003 A 6 = 4.81717e-005 A 8 = -4.17683e-006
A10 = 2.31980e-007
Third side
K = -6.71054e + 001 A 4 = -1.25502e-003 A 6 = 9.36993e-005 A 8 = -1.48143e-005
A10 = -5.60547e-007
4th page
K = 4.63442e-001 A 4 = -3.77281e-003 A 6 = 9.89592e-004 A 8 = -1.41886e-004
A10 = 6.01938e-006
5th page
K = 6.34661e + 001 A 4 = -2.18170e-003 A 6 = 1.43846e-003 A 8 = -1.94467e-004
A10 = 1.04358e-005
6th page
K = 9.00000e + 001 A 4 = -5.67998e-004 A 6 = 6.86542e-004 A 8 = -8.66547e-005
A10 = 4.00686e-006
8th page
K = -1.87501e + 000 A 4 = 1.01603e-003 A 6 = -7.41257e-005 A 8 = 1.05915e-005
A10 = -8.59893e-007
9th page
K = -7.57858e + 001 A 4 = -2.99491e-004 A 6 = -4.45123e-005 A 8 = 7.88147e-006
A10 = -7.18324e-007
10th page
K = 6.06182e + 001 A 4 = -5.70802e-004 A 6 = 6.31739e-005 A 8 = -3.12933e-005
A10 = 3.63305e-006
11th page
K = -8.53567e-001 A 4 = 2.29916e-003 A 6 = -4.31596e-005 A 8 = -4.69019e-005
A10 = 2.10631e-006
12th page
K = -1.63511e + 000 A 4 = 5.28029e-003 A 6 = -2.97920e-004 A 8 = 2.96250e-006
A10 = -2.68364e-006
Side 13
K = -3.21078e + 000 A 4 = 4.29280e-003 A 6 = -5.56892e-005 A 8 = 1.00908e-005
A10 = -1.04948e-006

Focal length 8.10
F number 2.88
Angle of view 25.57
Statue height 3.88
Total lens length 27.87
BF 4.93

Entrance pupil position 6.21
Exit pupil position -7.59
Front principal point 9.07
Rear principal point position -3.17

Single lens Data lens Start surface Focal length
1 1 -18.85
2 3 34.32
3 5 -38.35
4 8 7.82
5 10 11.02
6 12 -6.96

Telemiddle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 4154.388 1.70 1.62041 60.3 9.82
2 * 30.158 6.00 9.27
3 * 7.145 1.80 1.49700 81.5 7.31
4 * -37.728 0.50 6.89
5 * -19.914 0.80 1.84666 23.8 6.39
6 * -37.975 1.26 5.88
7 (Aperture) ∞ 2.16 4.95
8 * 4.833 1.20 1.59240 68.3 4.25
9 * 3.773 3.81 4.11
10 * 7.364 2.20 1.49700 81.5 6.12
11 * 74.404 0.50 5.89
12 * 4.514 1.00 1.84666 23.8 5.98
13 * 3.251 5.89
Image plane ∞

Aspheric data 1st surface
K = 9.00000e + 001 A 4 = -1.24610e-004 A 6 = -4.39173e-006 A 8 = 1.38407e-007
A10 = -1.64963e-010
Second side
K = -1.04824e + 001 A 4 = -1.76004e-005 A 6 = -8.98575e-006 A 8 = 2.94871e-007
A10 = -1.37615e-009
Third side
K = -4.46949e + 000 A 4 = 1.98279e-003 A 6 = -5.84120e-005 A 8 = 1.69123e-006
A10 = 3.04561e-009
4th page
K = 5.46418e + 001 A 4 = 1.83346e-003 A 6 = -1.23043e-004 A 8 = 4.22163e-006
A10 = -7.99090e-009
5th page
K = 6.34841e + 000 A 4 = 2.99260e-003 A 6 = -8.63827e-005 A 8 = 5.35571e-007
A10 = 1.25070e-007
6th page
K = 9.00000e + 001 A 4 = 2.60155e-003 A 6 = 6.19116e-006 A 8 = -3.70773e-006
A10 = 3.38238e-007
8th page
K = 1.72200e-001 A 4 = -1.75958e-003 A 6 = -2.06213e-004 A 8 = 2.14482e-006
A10 = 6.85163e-007
9th page
K = -3.10596e-001 A 4 = -2.00205e-003 A 6 = -4.63580e-004 A 8 = 1.96481e-005
A10 = 6.90382e-007
10th page
K = 9.19367e-001 A 4 = 4.32065e-003 A 6 = -3.08400e-004 A 8 = 1.26359e-005
A10 = -5.30893e-007
11th page
K = 2.29759e + 001 A 4 = 7.50550e-003 A 6 = -2.91010e-004 A 8 = -8.96536e-006
A10 = 3.41671e-007
12th page
K = -1.58103e-002 A 4 = -8.58579e-003 A 6 = 1.48904e-004 A 8 = -6.94785e-006
A10 = 5.72281e-007
Side 13
K = -2.83628e + 000 A 4 = -6.33802e-003 A 6 = 3.87565e-004 A 8 = -1.64786e-005
A10 = 8.57651e-007

Focal length 15.00
F number 2.88
Angle of view 14.48
Statue height 3.88
Total lens length 27.87
BF 4.93

Entrance pupil position 9.64
Exit pupil position -6.52
Front principal point position 5.00
Rear principal point position -10.07

Single lens Data lens Start surface Focal length
1 1 -48.97
2 3 12.25
3 5 -50.48
4 8 -50.18
5 10 16.27
6 12 -21.56

Tele individual eye

Unit mm

Surface data surface number rd nd vd Effective diameter
1 * 16.751 1.70 1.62041 60.3 12.59
2 * 210.161 6.00 12.38
3 * 8.298 1.80 1.49700 81.5 7.39
4 * -81.483 0.50 6.66
5 * -16.474 0.80 1.84666 23.8 6.35
6 * 1466.568 1.26 5.76
7 (Aperture) ∞ 2.16 5.23
8 * 6.911 1.20 1.59240 68.3 4.20
9 * 3.263 3.81 4.09
10 * 12.252 2.20 1.49700 81.5 6.72
11 * 16.214 0.50 6.66
12 * 8.301 1.00 1.84666 23.8 6.99
13 * 12.536 6.93
Image plane ∞

Aspheric data 1st surface
K = -1.55876e + 000 A 4 = 2.92366e-005 A 6 = -1.09631e-006 A 8 = -2.08632e-008
A10 = -3.05929e-010
Second side
K = -8.25615e + 001 A 4 = 8.52712e-005 A 6 = -3.92623e-006 A 8 = 1.40034e-008
A10 = -2.69295e-010
Third side
K = -3.67293e + 000 A 4 = 2.26440e-003 A 6 = -4.59917e-005 A 8 = 1.04881e-006
A10 = -6.76070e-008
4th page
K = -8.25640e + 001 A 4 = 2.95461e-003 A 6 = -1.69702e-004 A 8 = 2.78863e-006
A10 = -9.81982e-009
5th page
K = -8.54818e + 000 A 4 = 3.23331e-003 A 6 = -6.52295e-005 A 8 = 2.60563e-007
A10 = 2.06459e-008
6th page
K = 9.00000e + 001 A 4 = 2.84444e-003 A 6 = 5.54409e-005 A 8 = -2.01728e-006
A10 = 1.47975e-008
8th page
K = 9.01024e-001 A 4 = -3.18032e-003 A 6 = 1.87699e-005 A 8 = 1.35237e-006
A10 = 4.20761e-007
9th page
K = -5.97311e-001 A 4 = -3.35059e-003 A 6 = -8.80939e-005 A 8 = 3.70614e-005
A10 = -1.59924e-006
10th page
K = 4.33191e + 000 A 4 = 2.20495e-003 A 6 = -1.96480e-004 A 8 = 1.40411e-005
A10 = -1.95281e-007
11th page
K = 1.80446e + 001 A 4 = 1.78097e-003 A 6 = -1.22296e-004 A 8 = -3.36184e-006
A10 = 4.67220e-007
12th page
K = 2.52838e + 000 A 4 = -2.56453e-003 A 6 = 1.27725e-004 A 8 = -3.82035e-006
A10 = -8.84563e-008
Side 13
K = 2.03545e + 000 A 4 = -2.86765e-003 A 6 = 1.81150e-004 A 8 = -1.65134e-006
A10 = -1.51589e-007

Focal length 27.80
F number 2.88
Angle of View 7.94
Statue height 3.88
Total lens length 27.87
BF 4.93

Entrance pupil position 18.15
Exit pupil position -10.54
Front principal point position -4.00
Rear principal point position -22.87

Single lens Data lens Start surface Focal length
1 1 29.24
2 3 15.25
3 5 -19.24
4 8 -11.89
5 10 85.17
6 12 26.19

(Numerical Example 3)
Wide eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 17.545 1.30 1.72916 54.7 6.84
2 * 4.492 1.60 4.62
3 * 7.232 0.42 1.84666 23.8 3.94
4 * 5.551 1.75 3.84
5 * -9.747 0.80 1.77250 49.6 3.23
6 * -6.483 0.87 3.05
7 (Aperture) ∞ 1.46 2.95
8 * 4.952 1.20 1.59240 68.3 4.29
9 * -13.956 0.89 4.52
10 * 11.888 1.80 1.72916 54.7 4.80
11 * -6.936 0.50 4.68
12 * -4.690 0.60 1.84666 23.8 4.26
13 * 19.395 4.07
Image plane ∞

Aspheric data 1st surface
K = 1.93798e + 001 A 4 = 3.44220e-003 A 6 = -1.43219e-004 A 8 = 4.91643e-006
Second side
K = 1.93564e + 000 A 4 = 3.78641e-003 A 6 = 1.63212e-004 A 8 = -2.68609e-005
Third side
K = -2.58063e + 001 A 4 = -1.22252e-002 A 6 = -5.60380e-004
4th page
K = -1.40874e + 001 A 4 = -8.95519e-003 A 6 = -1.13109e-005
5th page
K = 1.47405e + 001 A 4 = 1.16143e-002 A 6 = 9.07581e-004
6th page
K = -9.69339e + 000 A 4 = 8.06017e-004 A 6 = 1.09323e-003
8th page
K = -5.09301e + 000 A 4 = 1.50977e-005 A 6 = -5.31157e-004
9th page
K = 1.50804e + 001 A 4 = -4.97400e-003 A 6 = 4.96866e-005
10th page
K = -5.05811e + 001 A 4 = 3.58405e-003 A 6 = -6.14664e-004 A 8 = 8.77333e-005
A10 = -3.44814e-006
11th page
K = 4.11902e + 000 A 4 = 5.20259e-003 A 6 = -1.01058e-003 A 8 = 1.11372e-004
A10 = -1.14390e-006
12th page
K = -8.52909e + 000 A 4 = -2.92426e-003 A 6 = 7.46116e-004 A 8 = -4.18326e-005
Side 13
K = 2.43033e + 001 A 4 = 8.04370e-003 A 6 = 7.03394e-004 A 8 = 2.12490e-005

Various data focal length 5.20
F number 2.88
Angle of view 36.62
Statue height 3.87
Total lens length 17.86
BF 4.68

Entrance pupil position 4.00
Exit pupil position -3.70
Front principal point position 5.98
Rear principal point position -0.52

Single lens Data lens Start surface Focal length
1 1 -8.64
2 3 -31.87
3 5 22.64
4 8 6.32
5 10 6.26
6 12 -4.41

Wide middle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 14.402 1.30 1.72916 54.7 7.20
2 * 9.996 1.60 5.79
3 * 5.871 0.42 1.84666 23.8 4.44
4 * 4.615 1.75 4.28
5 * -8.563 0.80 1.77250 49.6 3.55
6 * -13.567 0.87 3.35
7 (Aperture) ∞ 1.46 3.17
8 * 4.163 1.20 1.59240 68.3 4.32
9 * -12.199 0.89 4.41
10 * 6.787 1.80 1.72916 54.7 4.36
11 * 19.484 0.50 3.99
12 * -6.996 0.60 1.84666 23.8 3.92
13 * 14.611 3.89
Image plane ∞

Aspheric data 1st surface
K = 1.16168e + 001 A 4 = 9.89768e-004 A 6 = -5.43987e-005 A 8 = 3.26693e-006
Second side
K = 7.65824e + 000 A 4 = 1.39481e-003 A 6 = -9.20355e-005 A 8 = 9.48211e-007
Third side
K = -9.87273e + 000 A 4 = -8.94971e-003 A 6 = -4.29309e-004
4th page
K = -5.07614e + 000 A 4 = -9.61771e-003 A 6 = 1.73926e-004
5th page
K = 7.60775e + 000 A 4 = 7.63344e-003 A 6 = 4.36551e-004
6th page
K = -4.58561e + 001 A 4 = 1.33685e-003 A 6 = 4.26211e-004
8th page
K = -2.28716e + 000 A 4 = 8.67333e-004 A 6 = -2.09732e-004
9th page
K = 1.17258e + 001 A 4 = -3.23114e-003 A 6 = 1.73236e-004
10th page
K = -1.31003e + 001 A 4 = 2.80544e-003 A 6 = -7.65671e-004 A 8 = 9.93211e-005
A10 = -2.31040e-006
11th page
K = -9.00000e + 001 A 4 = 4.49945e-003 A 6 = -1.47687e-003 A 8 = 5.45215e-005
A10 = 8.48898e-006
12th page
K = -2.13149e + 001 A 4 = -4.89613e-003 A 6 = 9.18275e-004 A 8 = -1.52655e-005
Side 13
K = 3.35463e + 001 A 4 = 2.33168e-003 A 6 = 7.55748e-004 A 8 = 6.21658e-005

Various data focal length 7.50
F number 2.88
Angle of View 27.26
Statue height 3.87
Total lens length 17.86
BF 4.68

Entrance pupil position 5.43
Exit pupil position -3.21
Front principal point position 5.80
Rear principal point position -2.82

Single lens Data lens Start surface Focal length
1 1 -51.19
2 3 -30.09
3 5 -32.31
4 8 5.39
5 10 13.48
6 12 -5.52

Telemiddle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 11.464 1.30 1.72916 54.7 6.73
2 * 15.201 1.60 6.07
3 * -8.689 0.42 1.84666 23.8 5.19
4 * -44.646 1.75 5.05
5 * 25.108 0.80 1.77250 49.6 4.80
6 * -7.531 0.87 4.77
7 (Aperture) ∞ 1.46 3.61
8 * 142.496 1.20 1.59240 68.3 3.83
9 * 20.498 0.89 4.18
10 * 8.680 1.80 1.72916 54.7 4.64
11 * -40.199 0.50 4.89
12 * 4.483 0.60 1.84666 23.8 5.06
13 * 2.685 4.88
Image plane ∞

Aspheric data 1st surface
K = -1.12226e + 001 A 4 = -1.13289e-004 A 6 = -5.28008e-005 A 8 = 2.94049e-006
Second side
K = 5.62752e + 000 A 4 = -1.25443e-003 A 6 = -2.40089e-005 A 8 = 3.72638e-006
Third side
K = -8.87393e + 000 A 4 = 1.69189e-003 A 6 = -1.84476e-004
4th page
K = 6.67509e + 001 A 4 = 3.68820e-003 A 6 = -1.00293e-004
5th page
K = 1.23997e + 001 A 4 = -2.08071e-003 A 6 = 1.15687e-004
6th page
K = -2.71503e + 000 A 4 = -2.68612e-003 A 6 = 8.47615e-005
8th page
K = -9.00000e + 001 A 4 = -5.73823e-003 A 6 = 7.95727e-004
9th page
K = 2.16869e + 001 A 4 = -1.52643e-002 A 6 = 1.68370e-003
10th page
K = -8.73655e + 000 A 4 = -7.58655e-003 A 6 = -3.31580e-004 A 8 = 2.47858e-004
A10 = -1.66883e-005
11th page
K = -9.00000e + 001 A 4 = -1.06514e-003 A 6 = -3.52469e-004 A 8 = 1.03483e-004
A10 = -7.19175e-006
12th page
K = -1.16155e + 001 A 4 = 5.95986e-004 A 6 = 3.60160e-004 A 8 = -4.46187e-005
Side 13
K = -4.72048e + 000 A 4 = 3.59852e-003 A 6 = 4.99895e-006 A 8 = -2.00257e-005

Various data focal length 10.50
F number 2.88
Angle of view 20.21
Statue height 3.87
Total lens length 17.86
BF 4.68

Entrance pupil position 5.94
Exit pupil position -3.42
Front principal point position 2.83
Rear principal point position -5.82

Single lens Data lens Start surface Focal length
1 1 55.77
2 3 -12.81
3 5 7.58
4 8 -40.56
5 10 9.94
6 12 -9.34

Tele eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 7.756 1.30 1.72916 54.7 7.41
2 * 21.268 1.60 6.82
3 * -9.930 0.42 1.84666 23.8 5.91
4 * -84.565 1.75 5.58
5 * 27.184 0.80 1.77250 49.6 4.97
6 * -10.343 0.87 4.86
7 (Aperture) ∞ 1.46 4.02
8 * -562.426 1.20 1.59240 68.3 4.11
9 * 49.210 0.89 4.33
10 * 14.199 1.80 1.72916 54.7 4.46
11 * 8.599 0.50 4.77
12 * 6.050 0.60 1.84666 23.8 5.13
13 * 5.049 5.23
Image plane ∞

Aspheric data 1st surface
K = -5.01788e + 000 A 4 = 1.07278e-003 A 6 = -3.24083e-005 A 8 = 3.43676e-006
Second side
K = 1.37156e + 000 A 4 = -1.66607e-004 A 6 = 3.17988e-005 A 8 = 4.12335e-006
Third side
K = -1.14417e + 001 A 4 = 2.81702e-003 A 6 = -7.26483e-005
4th page
K = -9.00000e + 001 A 4 = 3.61630e-003 A 6 = -2.98440e-005
5th page
K = 4.05390e + 001 A 4 = -2.78388e-003 A 6 = 2.27441e-004
6th page
K = -3.61488e + 000 A 4 = -2.42356e-003 A 6 = 1.62345e-004
8th page
K = -9.00000e + 001 A 4 = -4.22712e-003 A 6 = 4.17957e-004
9th page
K = 9.00000e + 001 A 4 = -1.45330e-002 A 6 = 1.34423e-003
10th page
K = -5.32928e + 001 A 4 = -9.81497e-003 A 6 = -4.12565e-004 A 8 = 2.99948e-004
A10 = -1.98667e-005
11th page
K = -2.19201e + 000 A 4 = -2.78515e-003 A 6 = 1.62682e-004 A 8 = 1.65808e-005
A10 = -1.17910e-006
12th page
K = -2.08158e + 001 A 4 = 2.05328e-003 A 6 = -1.12732e-004 A 8 = -1.62819e-005
Side 13
K = -1.37690e + 001 A 4 = 7.58138e-005 A 6 = -5.48522e-006 A 8 = -1.39436e-005

Various data focal length 15.00
F number 2.88
Angle of view 14.45
Statue height 3.87
Total lens length 17.86
BF 4.68

Entrance pupil position 7.81
Exit pupil position -3.52
Front principal point position -4.63
Rear principal point position -10.32

Single lens Data lens Start surface Focal length
1 1 16.09
2 3 -13.32
3 5 9.79
4 8 -76.33
5 10 -34.59
6 12 -49.71

(Numerical example 4)
Wide eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 9.963 1.30 1.62041 60.3 6.14
2 * 2.063 3.16 4.23
3 * 5.403 1.40 1.59240 68.3 4.07
4 * -11.150 0.60 3.69
5 * -43.751 0.80 1.80518 25.4 3.07
6 * 15.608 0.10 3.02
7 (Aperture) ∞ 0.10 3.03
8 * 4.764 1.20 1.64000 60.1 3.07
9 * -66.999 2.94 3.02
10 * 14.404 1.80 1.59240 68.3 4.48
11 * -9.500 0.50 4.37
12 * -17.138 1.00 1.84666 23.8 4.29
13 * 11.853 5.09
Image plane ∞

Aspheric data 1st surface
K = -2.47869e + 001 A 4 = -2.02166e-003 A 6 = 5.43003e-005
Second side
K = -1.79551e + 000 A 4 = 1.25374e-002 A 6 = -4.89811e-005
Third side
K = 2.24981e + 000 A 4 = 2.67772e-003 A 6 = 1.71832e-004
4th page
K = -2.15785e + 001 A 4 = 1.38585e-003 A 6 = -4.29296e-005
5th page
K = -7.77189e + 000 A 4 = 2.90232e-003 A 6 = -1.23226e-003
6th page
K = 5.52064e + 001 A 4 = 2.30902e-003 A 6 = -9.38603e-004
8th page
K = 6.43691e-001 A 4 = 1.22013e-003 A 6 = 3.62473e-004
9th page
K = -6.95418e + 001 A 4 = 3.79577e-003 A 6 = 8.00925e-004
10th page
K = -9.00000e + 001 A 4 = 5.32715e-003 A 6 = 4.14940e-004
11th page
K = 1.36769e + 001 A 4 = -2.97992e-003 A 6 = 1.43850e-003
12th page
K = -9.00000e + 001 A 4 = -2.16468e-002 A 6 = 4.36176e-004
Side 13
K = 1.40560e + 001 A 4 = -1.25552e-002 A 6 = 5.78256e-004

Various data

Focal length 5.20
F number 2.88
Angle of view 36.69
Statue height 3.88
Total lens length 17.77
BF 2.87

Entrance pupil position 3.58
Exit pupil position -4.59
Front principal point 5.15
Rear principal point position -2.33

Single lens Data lens Start surface Focal length
1 1 -4.47
2 3 6.34
3 5 -14.20
4 8 6.99
5 10 9.94
6 12 -8.15

Tele eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 32.268 1.30 1.62041 60.3 8.47
2 * -51.647 3.16 8.11
3 * 5.700 1.40 1.59240 68.3 5.55
4 * -12.800 0.60 5.22
5 * -9.999 0.80 1.80518 25.4 3.82
6 * 191.283 0.10 3.38
7 (Aperture) ∞ 0.10 3.35
8 * 5.214 1.20 1.64000 60.1 3.27
9 * 2.487 2.94 3.24
10 * 18.649 1.80 1.59240 68.3 6.46
11 * 26.555 0.50 6.50
12 * 8.399 1.00 1.84666 23.8 6.65
13 * 11.838 6.78
Image plane ∞

Aspheric data 1st surface
K = -1.92634e + 001 A 4 = -2.82433e-004 A 6 = 3.81416e-006
Second side
K = 9.00000e + 001 A 4 = 3.23423e-004 A 6 = 2.68125e-006
Third side
K = -8.60800e-001 A 4 = 2.63313e-003 A 6 = 4.15438e-005
4th page
K = -2.86471e + 001 A 4 = 8.10119e-004 A 6 = 2.03306e-006
5th page
K = 9.11794e + 000 A 4 = 5.04006e-003 A 6 = 2.54023e-004
6th page
K = 7.38599e + 001 A 4 = 2.81749e-003 A 6 = 5.63571e-004
8th page
K = -8.57667e-001 A 4 = -3.65406e-003 A 6 = -4.84007e-004
9th page
K = -2.26017e-001 A 4 = -3.68837e-003 A 6 = -1.37027e-003
10th page
K = 1.65894e + 001 A 4 = 2.55538e-003 A 6 = 1.45887e-005
11th page
K = 9.21247e + 000 A 4 = 2.90663e-004 A 6 = -7.09973e-006
12th page
K = -7.20764e + 000 A 4 = -1.10889e-003 A 6 = -5.90829e-005
Side 13
K = 8.94495e + 000 A 4 = -3.28402e-003 A 6 = -4.17715e-005

Focal length 15.00
F number 2.88
Angle of view 14.48
Statue height 3.88
Total lens length 17.77
BF 2.87

Entrance pupil position 8.12
Exit pupil position -6.28
Front principal point position -1.49
Rear principal point position -12.13

Single lens Data lens Start surface Focal length
1 1 32.20
2 3 6.85
3 5 -11.78
4 8 -8.97
5 10 97.49
6 12 30.14

(Numerical example 5)
Wide eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * -48.116 1.30 1.62041 60.3 7.66
2 * 3.639 6.00 5.47
3 * 8.750 1.40 1.59240 68.3 4.73
4 * -16.903 0.50 4.40
5 * -34.756 0.80 1.80518 25.4 3.96
6 * 56.394 0.10 3.88
7 (Aperture) ∞ 0.10 3.88
8 * 6.065 1.20 1.64000 60.1 3.92
9 * 23.836 4.25 3.68
10 * 8.690 1.80 1.59240 68.3 5.41
11 * -9.012 0.50 5.31
12 * -8.618 1.00 1.84666 23.8 4.93
13 * 72.203 5.07
Image plane ∞

Aspheric data 1st surface
K = -9.00000e + 001 A 4 = 7.01850e-004 A 6 = -1.41729e-005
Second side
K = -1.02437e + 000 A 4 = 2.89533e-003 A 6 = 1.66545e-004
Third side
K = 4.11720e + 000 A 4 = -6.62206e-005 A 6 = 8.06378e-005
4th page
K = 1.07116e + 001 A 4 = 2.17403e-003 A 6 = -9.54859e-005
5th page
K = -9.00000e + 001 A 4 = 5.80653e-003 A 6 = -4.79986e-004
6th page
K = 2.07531e + 001 A 4 = 5.35204e-003 A 6 = -2.78954e-004
8th page
K = 7.31767e-001 A 4 = 4.43548e-004 A 6 = 1.00025e-004
9th page
K = -1.63240e + 001 A 4 = 1.86430e-003 A 6 = 1.94279e-004
10th page
K = -8.77468e + 000 A 4 = 2.85223e-003 A 6 = 2.41901e-005
11th page
K = 3.81908e + 000 A 4 = -3.42418e-003 A 6 = 3.06907e-004
12th page
K = -9.22231e + 000 A 4 = -8.81583e-003 A 6 = 4.93062e-004
Side 13
K = -3.49900e + 001 A 4 = -5.65878e-004 A 6 = 3.46460e-004

Various data focal length 5.20
F number 2.88
Angle of view 36.69
Statue height 3.88
Total lens length 23.95
BF 5.00

Entrance pupil position 4.01
Exit pupil position -6.87
Front principal point position 6.93
Rear principal point position -0.20

Single lens Data lens Start surface Focal length
1 1 -5.40
2 3 9.93
3 5 -26.60
4 8 12.38
5 10 7.76
6 12 -9.04

Wide middle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * -419.207 1.30 1.62041 60.3 7.36
2 * 4.982 6.00 5.79
3 * 8.643 1.40 1.59240 68.3 5.55
4 * -30.643 0.50 5.14
5 * -25.934 0.80 1.80518 25.4 4.81
6 * 68.322 0.10 4.60
7 (Aperture) ∞ 0.10 4.60
8 * 5.835 1.20 1.64000 60.1 4.81
9 * -260.120 4.25 4.79
10 * 46.541 1.80 1.59240 68.3 5.00
11 * -9.934 0.50 4.81
12 * -5.672 1.00 1.84666 23.8 4.70
13 * -20.639 5.21
Image plane ∞

Aspheric data 1st surface
K = 9.00000e + 001 A 4 = 1.05181e-003 A 6 = -2.00916e-005
Second side
K = -9.71530e-001 A 4 = 2.64711e-003 A 6 = 9.78189e-005
Third side
K = 6.02071e + 000 A 4 = -8.54070e-005 A 6 = 1.21119e-004
4th page
K = 6.94820e + 001 A 4 = 1.61239e-003 A 6 = 1.97117e-004
5th page
K = 8.65492e + 001 A 4 = 4.66403e-003 A 6 = -2.08149e-004
6th page
K = 4.69152e + 001 A 4 = 3.86845e-003 A 6 = -2.07634e-004
8th page
K = 9.12544e-001 A 4 = -8.06647e-004 A 6 = 7.47605e-005
9th page
K = 5.13762e + 001 A 4 = 2.89711e-004 A 6 = 1.47593e-004
10th page
K = -3.69018e + 001 A 4 = 9.86792e-004 A 6 = 2.20769e-004
11th page
K = 3.52657e + 000 A 4 = -3.00617e-003 A 6 = 2.55391e-004
12th page
K = -3.32502e + 000 A 4 = -1.04688e-002 A 6 = 3.83832e-004
Side 13
K = 3.90398e + 001 A 4 = -1.95574e-003 A 6 = 3.66442e-004

Various data focal length 7.50
F number 2.88
Angle of View 27.32
Statue height 3.88
Total lens length 23.95
BF 5.00

Entrance pupil position 4.83
Exit pupil position -5.89
Front principal point position 7.17
Rear principal point position -2.50

Single lens Data lens Start surface Focal length
1 1 -7.93
2 3 11.53
3 5 -23.26
4 8 8.93
5 10 13.99
6 12 -9.53

Telemiddle eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 21.333 1.30 1.62041 60.3 7.94
2 * 8.644 6.00 7.27
3 * 14.523 1.40 1.59240 68.3 5.76
4 * -8.547 0.50 5.55
5 * -8.406 0.80 1.80518 25.4 4.92
6 * -13.347 0.10 4.63
7 (Aperture) ∞ 0.10 4.42
8 * 6.682 1.20 1.64000 60.1 4.47
9 * 6.140 4.25 4.49
10 * 5.936 1.80 1.59240 68.3 6.67
11 * 34.617 0.50 6.26
12 * 5.087 1.00 1.84666 23.8 6.25
13 * 3.128 5.77
Image plane ∞

Aspheric data 1st surface
K = -2.60863e + 001 A 4 = -7.80509e-004 A 6 = -9.41827e-006
Second side
K = -5.52978e + 000 A 4 = 1.27924e-004 A 6 = -2.07571e-005
Third side
K = -2.40411e + 001 A 4 = 1.27171e-003 A 6 = -5.45047e-005
4th page
K = -2.17385e-001 A 4 = 3.74011e-004 A 6 = 7.90553e-006
5th page
K = 4.83965e-001 A 4 = 1.35730e-003 A 6 = 6.25170e-005
6th page
K = 6.10281e + 000 A 4 = 1.43583e-003 A 6 = 4.65354e-005
8th page
K = 1.69209e + 000 A 4 = -1.58544e-003 A 6 = -8.62746e-005
9th page
K = 1.59626e + 000 A 4 = -2.35778e-003 A 6 = -1.33625e-004
10th page
K = 1.92595e-001 A 4 = 9.83639e-004 A 6 = -1.49120e-006
11th page
K = 3.11410e + 001 A 4 = 3.18700e-003 A 6 = 2.95213e-006
12th page
K = -2.85262e + 000 A 4 = -1.83994e-003 A 6 = 7.62849e-005
Side 13
K = -2.02865e + 000 A 4 = -1.53383e-003 A 6 = 1.15514e-004

Various data focal length 10.50
F number 2.81
Angle of view 20.26
Statue height 3.88
Total lens length 23.95
BF 5.00

Entrance pupil position 7.18
Exit pupil position -4.92
Front principal point position 6.58
Rear principal point position -5.50

Single lens Data lens Start surface Focal length
1 1 -24.38
2 3 9.29
3 5 -30.40
4 8 -866.01
5 10 11.82
6 12 -12.52

Tele eye unit mm

Surface data surface number rd nd vd Effective diameter
1 * 14.827 1.30 1.62041 60.3 8.55
2 * 12.297 6.00 8.02
3 * 21.647 1.40 1.59240 68.3 6.41
4 * -8.367 0.50 6.22
5 * -8.443 0.80 1.80518 25.4 5.53
6 * -14.602 0.10 5.19
7 (Aperture) ∞ 0.10 4.98
8 * 6.475 1.20 1.64000 60.1 5.15
9 * 6.369 4.25 4.92
10 * 6.929 1.80 1.59240 68.3 5.98
11 * 6.888 0.50 5.77
12 * 5.923 1.00 1.84666 23.8 5.98
13 * 4.456 5.67
Image plane ∞

Aspheric data 1st surface
K = -3.75927e + 000 A 4 = -1.26105e-004 A 6 = -1.94984e-005
Second side
K = -2.03156e + 000 A 4 = 2.15308e-004 A 6 = -2.04223e-005
Third side
K = -5.47758e + 001 A 4 = 1.32411e-003 A 6 = -3.80510e-005
4th page
K = -9.95105e-001 A 4 = 5.16908e-004 A 6 = 2.08321e-006
5th page
K = 1.61472e + 000 A 4 = 1.45537e-003 A 6 = 7.83081e-005
6th page
K = 5.13501e + 000 A 4 = 1.14621e-003 A 6 = 6.02747e-005
8th page
K = 9.39192e-001 A 4 = -2.76114e-004 A 6 = 6.29758e-006
9th page
K = 9.66245e-001 A 4 = -3.93145e-004 A 6 = 2.50049e-005
10th page
K = -2.43256e + 000 A 4 = 4.08628e-004 A 6 = -4.67073e-005
11th page
K = -9.86742e-001 A 4 = 1.42657e-003 A 6 = -9.76226e-005
12th page
K = -3.46390e + 000 A 4 = 1.08774e-003 A 6 = -3.58503e-006
Side 13
K = -2.33129e + 000 A 4 = 2.77796e-004 A 6 = 3.71071e-005

Various data focal length 15.00
F number 2.88
Angle of view 14.48
Statue height 3.88
Total lens length 23.95
BF 5.00

Entrance pupil position 9.02
Exit pupil position -4.60
Front principal point position 0.58
Rear principal point position -10.00

Single lens Data lens Start surface Focal length
1 1 -144.61
2 3 10.37
3 5 -26.39
4 8 177.57
5 10 128.12
6 12 -30.90

  The present invention can be applied to a compound eye imaging apparatus in which a plurality of optical systems are arranged.

DESCRIPTION OF SYMBOLS 1 ... Compound eye imaging device, 110a, b, 120a, b, 130a, b, 140a, b ... Imaging optical system, 210a-f ... Imaging element, 105F ... Focus group unit (focus lens unit), 105R ... Rear group unit (Fixed lens unit)

Claims (8)

A plurality of imaging optical systems having different focal lengths and forming an optical image of the object;
An imaging element having an imaging region corresponding to each of the plurality of imaging optical systems, and photoelectrically converting the optical image formed by the corresponding imaging optical system;
Have
Each imaging optical system has a fixed lens unit that is fixed to a focus lens unit that is arranged on the most object side of the imaging optical system and is moved when the subject position changes,
The focus lens unit is an imaging device having a focus lens,
The focus lens includes: an imaging optical system having the focus lens; and a focusing lens of the imaging optical system that is adjacent in a direction perpendicular to the optical axis of the imaging optical system and has a different focal length from the imaging optical system; Have different surface shapes,
An imaging device that satisfies the following conditional expression:
0.8 <| ffi / ffh | <1.2
| (ΔOf + Δf) / ft | <2.1
However,
Δf = ffi-ffh
ΔOf = Ofi-Ofh
ft is the longest focal length of the plurality of imaging optical systems, ffh is the focal length of the focus lens unit of any imaging optical system h among the plurality of imaging optical systems, and fi is the plurality of imaging optics. Of the system, the focal length of the focus lens unit of any imaging optical system i, Ofh is the distance from the front principal point position of the focus lens unit of the imaging optical system h to the image plane, Ofi is the imaging optical system i. This is the distance from the front principal point position of the focus lens unit to the image plane.   The imaging apparatus according to claim 1, wherein the plurality of imaging optical systems include imaging optical systems having the same focal length. The plurality of imaging optical systems includes an imaging optical system in which the focus lens unit has a negative refractive power and an imaging optical system in which the focus lens unit has a positive refractive power,
The distance from the front principal point position of the focus lens unit having the negative refractive power to the image plane is Ofn, and the distance from the front principal point position of the focus lens unit having the positive refractive power to the image plane is Off. Then, the imaging apparatus according to claim 1, wherein the following conditional expression is satisfied.
1.0 <Ofn / Ofp <2.4 It further has a holding part that holds a plurality of focus lens units together,
The imaging apparatus according to claim 1, wherein the following conditional expression is satisfied.
0.5 <| ffi / ft | <1.6   5. The imaging apparatus according to claim 1, wherein the plurality of imaging optical systems have imaging optical systems having the same focal length.   6. The plurality of focus lens units according to claim 1, wherein at least one focus lens adjacent in a direction perpendicular to each optical axis is made of the same material. The imaging device described.   Among the plurality of imaging optical systems, the focusing lens unit of the imaging optical system with the shortest focal length has a negative refractive power, and the focusing lens unit of the imaging optical system with the longest focal length has a positive refractive power. The imaging apparatus according to any one of claims 1 to 6, wherein the imaging apparatus includes: A lens device that is detachably attached to the imaging device body,
A plurality of imaging optical systems having different focal lengths and forming an optical image of an object;
An imaging element that has an imaging region corresponding to each of the plurality of imaging optical systems, and that photoelectrically converts the optical image formed by the corresponding imaging optical system;
Each imaging optical system has a fixed lens unit that is fixed to a focus lens unit that is arranged on the most object side of the imaging optical system and is moved when the subject position changes,
The focus lens unit is an imaging device having a focus lens,
The focus lens includes: an imaging optical system having the focus lens; and a focusing lens of the imaging optical system that is adjacent in a direction perpendicular to the optical axis of the imaging optical system and has a different focal length from the imaging optical system; Have different surface shapes,
A lens apparatus satisfying the following conditional expression:
0.8 <| ffi / ffh | <1.2
| (ΔOf + Δf) / ft | <2.1
However,
Δf = ffi-ffh
ΔOf = Ofi-Ofh
ft is the longest focal length of the plurality of imaging optical systems, ffh is the focal length of the focus lens unit of any imaging optical system h among the plurality of imaging optical systems, and fi is the plurality of imaging optics. Of the system, the focal length of the focus lens unit of any imaging optical system i, Ofh is the distance from the front principal point position of the focus lens unit of the imaging optical system h to the image plane, Ofi is the imaging optical system i. This is the distance from the front principal point position of the focus lens unit to the image plane.